Vishay Capacitors: Film, Ceramic & Tantalum Portfolio Guide

When you’re sourcing capacitors for a design that spans military, automotive, and industrial markets from a single vendor, the short list gets short fast. Vishay consistently makes that list — and for good reason. They’re the number one manufacturer worldwide of wet and conformal-coated tantalum capacitors, one of the largest manufacturers of molded tantalum surface-mount capacitors, and a recognized leader in capacitors for power electronics. That’s not a small niche.

Vishay Intertechnology’s capacitor portfolio is built on decades of heritage brands — Vishay Sprague (tantalum), Vishay Vitramon (ceramic MLCC), Vishay BC Components (film), and others absorbed through acquisitions. The result is a capacitor lineup covering solid and wet tantalum, multilayer ceramic chips (including RF and automotive grades), film (MKP, MKT, and power types), aluminum electrolytic, and specialty safety-rated types. For a PCB engineer, understanding how these product families map to real applications is the practical value this guide delivers.

Vishay’s Position in the Capacitor Market

Vishay positions itself as “The DNA of tech” and backs that tagline with genuine manufacturing breadth. Their capacitor products support automotive, industrial, computing, consumer, telecommunications, military, aerospace, and medical markets — and they maintain dedicated manufacturing for military-grade tantalum at multiple sites including Dimona, Israel and Bennington, VT, USA, which matters enormously for ITAR-sensitive programs and domestic content requirements.

Their VITA SPICE simulation software provides impedance, ESR, capacitance, and ripple current vs. frequency data for tantalum and polymer capacitors by part number — an underused tool that saves real design time.

Vishay Tantalum Capacitors: TANTAMOUNT and Beyond

Tantalum is Vishay’s deepest product category and their clearest market leadership position. Understanding the series hierarchy from commercial through Hi-Rel COTS is essential for navigating their catalog efficiently.

## Solid Tantalum SMD Capacitors: Commercial Grade

The commercial tantalum line covers standard industrial applications — telecom, computing, consumer electronics, medical devices, and general industrial where AEC-Q200 is not required.

Series	Type	Capacitance Range	Voltage Range	Key Feature
293D	TANTAMOUNT™ molded, standard industrial	0.10 µF – 2,200 µF	4 – 75 V	Workhorse commercial grade, widest availability
TR3	TANTAMOUNT™ surge-current tested	0.47 µF – 680 µF	4 – 50 V	Low ESR from 35 mΩ, surge current tested
592D	TANTAMOUNT™ molded, standard	0.10 µF – 1,500 µF	4 – 50 V	Wide capacitance range
594D	TANTAMOUNT™ automotive grade	—	4 – 50 V	AEC-Q200 compliant
TMCS	Conformal coated, standard	—	4 – 50 V	Conformal coating for robustness

The 293D is Vishay’s most widely stocked commercial tantalum — standard MnO2 construction, B through E EIA case sizes, and availability in 100% tin and 60/40 Sn/Pb terminations. Vishay recently extended the 293D and TR3 series to industry-high 75V ratings in D and E cases, addressing a long-standing gap for designers speccing parts for power rails above 35V with proper 50% voltage derating headroom.

The TR3 is the better choice when low ESR matters. Its multi-anode construction delivers ESR as low as 35 mΩ in the E case, and all B through E cases are 100% surge current tested — providing higher surge robustness confidence than standard molded parts. TR3 is pad-compatible with the 593D series, making it a straightforward upgrade path from older designs.

One critical design rule for all solid MnO2 tantalum: always derate voltage to 50% of rated value for standard operation. Vishay’s datasheets specify this explicitly. Higher than recommended operating voltage-to-rated voltage ratios are the primary cause of catastrophic solid tantalum failures. The failure mode of standard MnO2 tantalum is a short circuit with potential for thermal runaway — not something you want discovering in your customer’s hands.

## Hi-Rel COTS Tantalum Series: T95, T96, T97, T98

When the application is military, aerospace, or other safety-critical systems, the standard commercial 293D doesn’t cut it. Vishay’s Hi-Rel COTS conformal-coated tantalum series is where the military supply chain lives.

Series	Grade	Built-in Fuse	Multi-Anode (Low ESR)	Capacitance	Voltage	Key Application
T95	Hi-Rel COTS	No	No	0.15 µF – 680 µF	4 – 50 V	Standard hi-rel, COTS programs
T96	Hi-Rel COTS	Yes	No	10 µF – 680 µF	4 – 50 V	High-current hi-rel, fused
T97	Hi-Rel COTS	No	Yes	10 µF – 2,200 µF	4 – 75 V	Ultra-low ESR, avionics +28V
T98	Hi-Rel COTS	Yes	Yes	10 µF – 1,500 µF	4 – 75 V	Ultra-low ESR, fused, highest spec

All four series operate −55°C to +125°C (with voltage derating above +85°C), carry conformal coating for environmental protection, and are available with surge current testing options per MIL-PRF-55635 requirements.

The T97 deserves specific mention for avionics designers. Aircraft +28V DC power distribution has historically been problematic for tantalum selection because standard 50V parts, when properly derated to 50%, leave almost no margin above 28V. The T97’s 75V rating (and the T97 in particular at 63V and 22 µF in F case) was Vishay’s direct answer to this: it allows designers to meet 50% voltage derating on a 28V supply without compromising capacitance. This solved a genuine gap in the hi-rel tantalum market.

The fused T96 and T98 series are specified for high-current applications where surge current events could push tantalum capacitors into catastrophic failure. The integrated fuse converts a potential short-circuit failure mode into a safe open-circuit, which is the standard defense when a tantalum capacitor is exposed to current pulses exceeding its surge capability.

## Wet Tantalum: SuperTan and SuperTan Extended

For the highest volumetric efficiency in hermetically sealed military and aerospace packaging, Vishay’s SuperTan® (ST) and SuperTan® Extended (STE) wet tantalum capacitors deliver two to three times more capacitance per unit volume than standard hermetic tantalum parts. The STE cathode system extends this advantage further with the highest available capacitance per unit volume in the wet tantalum category.

SuperTan capacitors are housed in all-tantalum, hermetically sealed cases — appropriate for airborne, satellite, and smart munitions applications where size, weight, and resistance to extreme environments are non-negotiable. These aren’t general-purpose parts; they’re for designs where the cost and complexity of hermetic construction is justified by the application.

Vishay Ceramic Capacitors: Vitramon MLCCs

Vishay’s ceramic MLCC line is produced under the Vishay Vitramon brand and covers general commercial, automotive (AEC-Q200), RF/high-frequency, safety-rated, and non-magnetic specialty types. One distinguishing feature of the entire Vishay Vitramon MLCC line is the use of Precious Metal Technology (PMT/NME) with a wet build process — a construction approach that provides excellent reliability in harsh environments, particularly relevant for automotive parts.

## VJ Series: Automotive MLCCs (AEC-Q200)

Vishay Vitramon’s VJ automotive MLCC series has supported the automotive industry for more than 30 years. All VJ automotive MLCCs are manufactured in PMT/NME and are AEC-Q200 qualified with PPAP (Production Part Approval Process) available on request — the documentation that automotive Tier 1s and OEMs require.

Series	Dielectric	Operating Temp	Voltage Range	Notable Feature
VJ..31	X7R, C0G, X8R	−55°C to +125°C (X7R), +150°C (X8R)	Up to 200V	Under-hood, standard automotive
VJ..34	X7R, C0G, X8R	−55°C to +150°C (X8R)	Up to 200V	Under-hood, extended temp

The X8R dielectric available in the VJ automotive series is particularly relevant for under-hood EV and hybrid vehicle applications where local temperatures near the powertrain can exceed the standard X7R upper limit of +125°C. The X8R maintains capacitance within ±15% from −55°C to +150°C, making it one of the few MLCC options for genuine 150°C operating environments.

Polymer (flexible) termination options are available for 0603 and larger case sizes — the Vishay equivalent of flex crack prevention, offering some of the same mechanical compliance benefits as soft-termination technology from other MLCC suppliers.

## VJ HiFREQ and RF MLCCs

For RF and microwave applications, Vishay offers the VJ HiFREQ series and related RF MLCC families providing tight capacitance control, low losses (high Q), and low ESR in case sizes from 0402 to 3838. These are precious metal electrode construction parts optimized for frequencies from a few hundred MHz into the multi-GHz range.

The Vishay RF MLCC lineup competes in the same space as Murata’s GJM/GQM and KEMET’s RF series — high-Q, low-ESR construction for impedance matching networks, DC blocking in RF signal paths, and PA bypass decoupling where standard base-metal-electrode MLCCs introduce unacceptable insertion loss.

## Non-Magnetic and Safety MLCCs

Two specialty categories worth knowing: Vishay’s non-magnetic MLCC series uses palladium/silver inner electrodes and non-magnetic terminations — essential for MRI machines, implantable medical devices, and any ferromagnetic-sensitive instrumentation. Standard MLCC inner electrodes use nickel, which is ferromagnetic. In MRI environments, that’s a patient safety issue. The non-magnetic series eliminates it.

Vishay’s safety-certified capacitors (VY1, AY1, AY2 series) cover X1/Y1 and X1/Y2 classifications for AC mains interference suppression. The AY1 series is the industry’s first AEC-Q200 qualified automotive X1/Y1 safety capacitor — a meaningful first-to-market in an application space where safety agency certification and automotive qualification requirements have historically created a sourcing gap. All safety capacitors are approved to IEC 60384-14.4, UL, and CQC.

Vishay Film Capacitors: MKP, MKT, and Power Types

Vishay’s film capacitor portfolio covers metallized polypropylene (MKP), metallized polyester (MKT/MKS), and power film types for AC and pulse applications, motor run, and energy-dense power electronics.

Film Series	Dielectric	Voltage Range	Key Application
MKP / MKP378	Metallized PP	Up to several kV	AC/pulse, motor run, power supply snubbers
MKT	Metallized PET (polyester)	Up to 630V	General purpose DC/AC filtering, coupling
WCAP-FTXX	Metallized PP/PET	Up to 1,000V+	Power electronics, industrial, EV inverter
MKP1837	Metallized PP axial	Up to 630V	Precision audio, bypass, tight tolerance

The MKP series (metallized polypropylene) is the right film dielectric when you need low dissipation factor at high frequency, high peak current capability, or operation in AC power circuits. Polypropylene film has one of the lowest DF values of any capacitor dielectric — critical for motor run capacitors, power factor correction, and snubber networks where energy dissipation in the capacitor itself contributes to heating.

The WCAP-FTXX series from Vishay BC Components covers the industrial and power electronics market with voltage ratings up to and beyond 1,000V for DC link and AC bus applications. As EV powertrain platforms push toward 800V DC bus architectures, high-voltage polypropylene film capacitors from this type of series become essential for inverter DC link filtering where ceramic and electrolytic technology simply can’t reach the required voltage levels.

The MKP1837 is something of a cult item in the precision electronics and audio world — a tight-tolerance metallized polypropylene film axial capacitor that combines very low DF with good volumetric efficiency for its tolerance class. It’s not the part most engineers think about first, but it’s worth knowing when a precision bypass or coupling position requires a film capacitor in a small form factor.

Vishay Capacitor Selection by Application

Application	Recommended Vishay Product	Key Reason
Commercial PCB decoupling	293D TANTAMOUNT™	Wide availability, standard industrial grade
Low-ESR power supply filtering	TR3 TANTAMOUNT™	Low ESR from 35 mΩ, surge current tested
Military / aerospace hi-rel	T95, T96, T97, T98	Conformal coated, surge screening options
Avionics +28V bus	T97 (75V, multi-anode)	Enables 50% derating compliance on 28V supply
Airborne energy storage	SuperTan (ST/STE)	Hermetic, highest cap/volume in wet tantalum
Automotive ECU decoupling	VJ series (X7R, AEC-Q200)	PMT construction, AEC-Q200, PPAP available
Under-hood 150°C	VJ X8R	Operates to +150°C, AEC-Q200
MRI / implantable medical	VJ Non-Magnetic	No ferromagnetic nickel inner electrodes
AC mains EMI / safety	AY1 (automotive X1/Y1)	AEC-Q200 and safety certified
RF / microwave matching	VJ HiFREQ series	High-Q PMT construction
Motor run / power factor	MKP film	Low DF, high peak current, AC rated
EV inverter DC bus	WCAP-FTXX power film	High voltage PP film, power electronics grade

Useful Resources for Vishay Capacitor Selection

Official Vishay Tools and Documentation

• Vishay Capacitor Product Page — Complete product family navigation by technology type
• Vishay VITA SPICE Tool — Free simulation tool for impedance, ESR, capacitance vs. frequency for tantalum and polymer capacitors by part number
• Vishay Document Library — Datasheets, technical notes, application notes, and selection guides
• Vishay Tantalum Capacitor Product Guide — Comprehensive guide to the full TANTAMOUNT and hi-rel tantalum lineup
• Vishay Solid Tantalum FAQ (doc 40110) — Engineering FAQ for solid tantalum: derating, DC/DC design, surge testing, failure modes
• Vishay Tantalum Technical Note (doc 40021) — Fundamentals of wet and solid tantalum capacitor design
• Vishay Safety Capacitors Application Note — X/Y safety capacitor series overview including automotive AY1/AY2

Distributor Parametric Search (Stock + Datasheets)

• DigiKey Vishay Tantalum Search — Filter by series, case, voltage, ESR; direct datasheet links
• Mouser Vishay Capacitors — Full Vishay product range including Hi-Rel and specialty types
• TTI Vishay Tantalum T97 Series — Hi-Rel COTS sourcing with application context

5 Frequently Asked Questions About Vishay Capacitors

Q1: What voltage derating should I apply to Vishay solid tantalum capacitors?

Vishay’s standard recommendation for solid MnO2 tantalum capacitors is 50% of rated voltage for general DC operation. That means a 35V rated capacitor should see no more than 17.5V DC in steady-state operation. For individual series, always check the derating table in the relevant datasheet — some series and operating conditions call for tighter derating, particularly above +85°C where additional thermal derating applies. This derating requirement is one of the most important design rules for solid tantalum, not an optional guideline. Running close to the rated voltage significantly increases the probability of catastrophic short-circuit failure, which is the dominant failure mode for MnO2 tantalum capacitors under electrical overstress.

Q2: What is the difference between the Vishay 293D and TR3 solid tantalum series?

Both are commercial-grade TANTAMOUNT solid tantalum SMD capacitors, but TR3 offers lower ESR and comes 100% surge current tested in case sizes B through E. The 293D is a wider-availability general-purpose part covering a broader capacitance/voltage matrix and case range. TR3’s multi-anode construction delivers ESR starting at 35 mΩ — making it appropriate for DC/DC converter output filtering, microprocessor bulk decoupling, and any application where ripple current handling matters. The TR3 is also pad-compatible with the older 593D series, making it a convenient upgrade path. For straightforward bypass decoupling without specific low-ESR requirements, 293D is fine. For power supply output positions, TR3 is the better specification.

Q3: When should I use Vishay’s Hi-Rel COTS T95/T96/T97 series versus commercial 293D?

The Hi-Rel COTS series is for military, aerospace, and safety-critical applications where commercial grade is insufficient. The key differences are conformal coating for environmental protection, documented Weibull failure rates, surge current screening options per MIL-PRF-55635, and tighter lot traceability. If your program is COTS-for-military (Commercial Off-The-Shelf with military-grade screening), T95 is the entry point. T96 adds a built-in fuse for high-current applications. T97 provides ultra-low ESR through multi-anode construction and extends to 75V — specifically engineered for avionics +28V bus applications where 50% voltage derating on 50V parts doesn’t satisfy requirements. If you’re designing for any military or aerospace application with a formal reliability requirement, start the tantalum selection from the T9x series rather than working up from commercial.

Q4: What makes Vishay Vitramon’s automotive MLCCs different from standard commercial VJ parts?

Vishay Vitramon’s automotive VJ series carries full AEC-Q200 qualification with PPAP documentation available on request. The construction uses Precious Metal Technology (PMT) with a wet build process across the entire automotive line — providing a different and often more reliable construction approach than the base metal electrode (BME) technology used in many mainstream commercial MLCCs. The automotive series extends to X8R dielectric for +150°C operation in under-hood applications where standard X7R parts (rated to +125°C) would be operating at or beyond their thermal limit. Polymer (flexible) termination options are available for 0603 and larger sizes to reduce flex cracking risk. For any design going into a vehicle — regardless of whether it’s under-hood powertrain or interior cabin electronics — start with the AEC-Q200 qualified VJ series rather than trying to qualify standard parts for automotive use after the fact.

Q5: What film capacitor type should I use for a power electronics snubber in an industrial inverter?

For snubber networks and DC link filtering in industrial motor drives and inverters, metallized polypropylene (MKP) is the right dielectric. Polypropylene has very low dissipation factor, high peak current capability, and self-healing behavior — when a local dielectric breakdown occurs from a voltage spike, the metallized electrode vaporizes around the fault and the capacitor continues functioning with a very small capacitance loss. That self-healing property is critical in power electronics where transient overvoltages are frequent. Vishay’s MKP/MKP378 series for AC and pulse applications, and the WCAP-FTXX power film series for higher-voltage designs, cover the typical industrial inverter snubber and DC bus filtering range. For EV applications where bus voltages reach 400V or 800V, verify the voltage rating accounts for transient overvoltages — Vishay’s power film series reaches well beyond 1,000V to accommodate these requirements.

Final Thoughts: Working with Vishay’s Capacitor Catalog

Vishay’s catalog depth is both an asset and a navigation challenge. The tantalum lineup in particular spans from basic commercial parts to hermetically sealed space-grade wet tantalum — each optimized for a different position in the reliability and cost hierarchy. The practical approach is to identify your application’s qualification tier first (commercial, automotive, hi-rel COTS, or MIL-spec), then select the appropriate series within that tier.

Download the Vishay VITA SPICE tool before finalizing any tantalum or polymer capacitor selection that involves AC current or power supply filtering. The impedance and ESR vs. frequency curves it generates are far more useful for design validation than the single-frequency spec table in the datasheet. For film capacitors, the MKP series technical notes include ripple current derating curves vs. frequency and ambient temperature — use those curves explicitly, as film capacitor ripple ratings change significantly between the rated frequency and real-world converter switching frequencies.

Vishay’s engineering support channels (tantalum@vishay.com, mlcc@vishay.com) are worth contacting directly for high-volume or hi-rel applications — their application engineers are technically strong and can help navigate qualification requirements faster than catalog browsing alone.