CDR31BX102BKUSAP Equivalent & Substitute Parts

Part Overview

The CDR31BX102BKUSAP is a 1000 pF ±10% 100V ceramic capacitor manufactured by Vishay Vitramon, qualified to MIL-PRF-55681 military specifications. This surface mount multilayer ceramic capacitor (MLCC) in 0805 (2012 Metric) package is designed for high-reliability applications with a failure rate of S (0.001%). The part is currently active in production with 840 units in stock. Substitute parts are necessary to address supply chain continuity, alternative packaging formats, or procurement from qualified alternate manufacturers while maintaining electrical and mechanical compatibility.

Substiute Parts

CDR31BX102BKUSAP

Vishay VitramonIn Stock: 859CDR31BX102BKUSAP Datasheet

Current PartRFQ

CDR31BX102BKWSAT

Vishay VitramonIn Stock: 936CDR31BX102BKWSAT Datasheet

Parametric EquivalentRFQ

CDR01BX102BKUS7185

KEMETIn Stock: 1167CDR01BX102BKUS7185 Datasheet

DirectRFQ

CDR01BX102BKUS7370

KEMETIn Stock: 3011CDR01BX102BKUS7370 Datasheet

DirectRFQ

CDR31BX102BKUS

KYOCERA AVXIn Stock: 962CDR31BX102BKUS Datasheet

Parametric EquivalentRFQ

CDR31BX102BKUS

KYOCERA AVXIn Stock: 962CDR31BX102BKUS Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for CDR31BX102BKUSAP is determined by strict equivalence across the following parameters:

• Capacitance: 1000 pF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage Rating: 100V (exact match required)
• Temperature Coefficient: BX (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• Package / Case: 0805 (2012 Metric) (exact match required)
• Mounting Type: Surface Mount, MLCC (exact match required)
• Failure Rate: S (0.001%) (exact match required)
• Series Qualification: MIL-PRF-55681 (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

All qualified substitutes meet these criteria. Variations in packaging format (Cut Tape vs. Tape & Reel) and minor dimensional tolerances within the 0805 package specification do not affect functional equivalence. Manufacturer differences (Vishay Vitramon, KEMET, KYOCERA AVX) are permitted provided all electrical and mechanical parameters remain identical.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are qualified equivalents to CDR31BX102BKUSAP and are suitable for direct replacement in applications requiring MIL-PRF-55681 military-grade ceramic capacitors with 1000 pF capacitance at 100V rating.

CDR31BX102BKWSAT (Vishay Vitramon, Cut Tape packaging) maintains identical electrical specifications and dimensional characteristics to the main part, differing only in packaging format. This option is appropriate for applications where cut tape format is preferred or required by assembly processes.

CDR31BX102BKUS (KYOCERA AVX, Tape & Reel packaging) provides equivalent performance with Tape & Reel packaging. This format is standard for high-volume automated assembly operations.

CDR01BX102BKUS7185 and CDR01BX102BKUS7370 (KEMET, Tape & Reel packaging) are qualified military-grade equivalents from an alternate manufacturer. Both parts meet all electrical and mechanical requirements. CDR01BX102BKUS7370 offers higher inventory availability (2964 units) compared to CDR01BX102BKUS7185 (1061 units).

All substitute parts carry MIL-PRF-55681 qualification, MSL Level 1 (Unlimited moisture sensitivity), and identical failure rate specifications. Selection among substitutes should be based on packaging format requirements, inventory availability, and procurement lead time considerations.

Frequently Asked Questions (FAQ)

Q: Can CDR31BX102BKWSAT be used as a direct replacement for CDR31BX102BKUSAP?

A: Yes. CDR31BX102BKWSAT is a parametric equivalent with identical electrical and mechanical specifications. The only difference is packaging format (Cut Tape vs. standard). Both are manufactured by Vishay Vitramon and qualified to MIL-PRF-55681.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is supplied on continuous carrier tape wound on reels, suitable for automated pick-and-place assembly. Cut Tape (CT) packaging is supplied as individual tape segments, typically used for lower-volume assembly or manual placement. Electrical and mechanical performance are identical.

Q: Are KEMET CDR01 parts compatible with Vishay Vitramon CDR31 parts?

A: Yes. CDR01BX102BKUS7185 and CDR01BX102BKUS7370 are qualified military-grade equivalents meeting all electrical and mechanical parameters of CDR31BX102BKUSAP. Both manufacturers' parts comply with MIL-PRF-55681 specifications.

Q: Do the substitute parts have the same physical dimensions?

A: All parts conform to the 0805 (2012 Metric) package specification. Minor dimensional variations exist within specification tolerances: Vishay Vitramon parts measure 0.079" L x 0.049" W (2.00mm x 1.25mm) with 0.051" (1.30mm) maximum thickness; KEMET parts measure 0.080" L x 0.050" W (2.03mm x 1.27mm) with 0.055" (1.40mm) maximum thickness. These variations are within standard 0805 package tolerances and do not affect PCB layout or assembly compatibility.

Q: Which substitute part has the best inventory availability?

A: CDR01BX102BKUS7370 (KEMET) offers the highest inventory with 2964 units in stock, followed by CDR01BX102BKUS7185 (KEMET) with 1061 units, CDR31BX102BKUS (KYOCERA AVX) with 938 units, and CDR31BX102BKWSAT (Vishay Vitramon) with 901 units.

Q: Are all substitute parts RoHS non-compliant like the main part?

A: Yes. All listed substitute parts carry RoHS non-compliant status, consistent with military-grade MIL-PRF-55681 qualification requirements.