Vishay CWR06, CWR16 and CWR26 are conformal-coated, surface-mount solid tantalum capacitors qualified to MIL-PRF-55365. Their main differences are:

• CWR06: MIL-PRF-55365/4 series with the broadest voltage coverage, reaching 50 VDC.

• CWR16: MIL-PRF-55365/13 extended-range series with capacitance up to 330 µF.

• CWR26: MIL-PRF-55365/13 low-ESR series for selected 15 V, 25 V and 35 V power-rail applications.

CWR06 is generally selected for broad voltage and reliability-grade coverage. CWR16 is better for higher capacitance, while CWR26 targets circuits where lower ESR is the priority.

CWR06 vs CWR16 vs CWR26 Comparison

1. CWR06: Broad MIL-PRF-55365/4 Coverage

The CWR06 is a conformal-coated TANTAMOUNT™ capacitor qualified to MIL-PRF-55365/4. It offers the widest voltage range of the three series, covering 4 VDC through 50 VDC.

According to the Vishay CWR06 datasheet, the series supports capacitance values from 0.10 µF to 100 µF and case codes A through H.

CWR06 also provides the broadest choice of reliability levels:

• Weibull failure rates B, C, D and T

• Exponential failure rates M, P, R and S

• Optional surge-current testing

• Gold and multiple SnPb termination finishes

Choose CWR06 when the design requires MIL-PRF-55365/4 compliance, voltage ratings up to 50 VDC or a specific exponential failure-rate option.

2. CWR16: Extended-Range MIL-PRF-55365/13 Capacitor

CWR16 is qualified to MIL-PRF-55365/13 and expands the available capacitance range to 330 µF. It uses the same general conformal-coated construction and A-to-H case-code system as CWR06.

The Vishay CWR16 datasheet specifies:

• Capacitance from 0.33 µF to 330 µF

• Voltage ratings from 4 VDC to 35 VDC

• Weibull failure rates B, C and T

• Optional surge-current testing

• Gold and SnPb termination options

CWR16 is the preferred starting point when the circuit requires more than 100 µF but does not need the specialized low-ESR performance of CWR26.

Typical applications include bulk decoupling, power-supply filtering and energy storage on low-voltage military electronics.

3. CWR26: Low-ESR MIL-PRF-55365/13 Capacitor

CWR26 is also qualified to MIL-PRF-55365/13, but it is optimized for lower ESR. Its catalog is more focused, covering selected capacitance and voltage combinations in F, G and H cases.

The Vishay CWR26 datasheet includes:

• 10 µF to 100 µF capacitance

• 15 VDC, 25 VDC and 35 VDC ratings

• Maximum ESR values from approximately 0.180 Ω to 0.800 Ω

• Weibull failure rates B, C and T

• Optional surge-current screening

For example, the CWR16 100 µF, 15 V H-case rating has a maximum ESR of 0.9 Ω at 100 kHz, while the comparable CWR26 rating is specified at 0.180 Ω. This makes CWR26 more suitable for power rails with higher ripple-current or transient-response requirements.

Frequently Asked Questions

What is the main difference between CWR16 and CWR26?

Both are qualified to MIL-PRF-55365/13. CWR16 offers a broader capacitance range, while CWR26 provides lower ESR for a limited group of 15 V to 35 V ratings.

Which series supports 50 VDC?

CWR06 is the only series in this comparison offering ratings up to 50 VDC. CWR16 and CWR26 are limited to 35 VDC.

Which series has the highest capacitance?

CWR16 reaches 330 µF. CWR06 and CWR26 are limited to 100 µF.

Are CWR tantalum capacitors rated to +125°C?

All three series operate from -55°C to +125°C, but voltage derating is required above +85°C. The +125°C operating voltage is lower than the rated voltage specified at +85°C.

Why is there no capacitance marking on the component body?

Vishay states that these conformal-coated capacitors are not marked on the body. Rating and date-code information is supplied on the reel label. Polarity is identified by the termination construction and sealing-epoxy color.

Does the CWR series name alone confirm QPL compliance?

No. Procurement should verify the exact part number, termination, reliability level, surge option and current qualification status against the applicable program documents and qualified-products requirements.

Stock and RFQ

DataStorageIC can assist with Vishay CWR06, CWR16 and CWR26 part-number identification, quotation and cross-reference evaluation.

For an accurate RFQ, provide:

Complete CWR or military part number

Capacitance and rated voltage

Required MIL-PRF-55365 slash sheet

Case code

Termination finish

Failure-rate level

Surge-current option

Quantity and required delivery date

Traceability or date-code requirements

Stock, lead time, qualification documentation and export eligibility are subject to confirmation. Visit the Vishay product page to submit an inquiry.