CDR33BX104AMWSAT Equivalent & Substitute Parts

Part Overview

The CDR33BX104AMWSAT is a 0.1 µF ±20% 50V ceramic capacitor in 1210 (3225 Metric) package manufactured by Vishay Vitramon. This military-grade MLCC (Multilayer Ceramic Capacitor) operates across -55°C to 125°C with a failure rate of S (0.001%) and is designed for high-reliability applications per MIL-PRF-55681 specification. The part is currently active in production with 693 pieces in stock. Substitute parts are identified to address supply availability, tolerance improvements, or alternative sourcing from qualified manufacturers within the same electrical and mechanical specifications.

Substiute Parts

CDR33BX104AMWSAT

Vishay VitramonIn Stock: 762CDR33BX104AMWSAT Datasheet

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CDR33BX104AKWSAT

Vishay VitramonIn Stock: 2730CDR33BX104AKWSAT Datasheet

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CDR33BX104AKUS

KYOCERA AVXIn Stock: 864CDR33BX104AKUS Datasheet

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CDR33BX104AKUS7370

KEMETIn Stock: 1912CDR33BX104AKUS7370 Datasheet

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CDR33BX104AKUS7956

KEMETIn Stock: 3749CDR33BX104AKUS7956 Datasheet

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CDR33BX104AKWS7185

KEMETIn Stock: 3747CDR33BX104AKWS7185 Datasheet

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CDR33BX104AKYS

KEMETIn Stock: 1377CDR33BX104AKYS Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for CDR33BX104AMWSAT is determined by strict equivalence in the following parameters:

• Capacitance: 0.1 µF (exact match required)
• Voltage Rating: 50V (exact match required)
• Temperature Coefficient: BX (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• Package / Case: 1210 (3225 Metric) (exact match required)
• Mounting Type: Surface Mount, MLCC (exact match required)
• Failure Rate: S (0.001%) (exact match required)
• Series Compliance: Military, MIL-PRF-55681, CDR33 (exact match required)

All identified substitute parts meet these criteria. Tolerance variations (±20% to ±10%) and thickness differences (1.25mm to 1.50mm) are within allowable mechanical and electrical parameters for this product category. Packaging format (Tape & Reel) and RoHS/REACH compliance status do not affect functional substitution.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain active product status and comply with MIL-PRF-55681 military specifications. Selection should be based on the following factors:

Tolerance Consideration: CDR33BX104AKWSAT, CDR33BX104AKUS, CDR33BX104AKUS7370, CDR33BX104AKUS7956, CDR33BX104AKWS7185, and CDR33BX104AKYS offer improved ±10% tolerance compared to the original ±20% tolerance, providing tighter capacitance control for precision applications.

Manufacturer Availability: Vishay Vitramon (CDR33BX104AKWSAT) maintains the same manufacturer as the original part. KYOCERA AVX (CDR33BX104AKUS) and KEMET (CDR33BX104AKUS7370, CDR33BX104AKUS7956, CDR33BX104AKWS7185, CDR33BX104AKYS) are qualified alternative sources.

RoHS Compliance: CDR33BX104AKYS is ROHS3 compliant, while all other parts are RoHS non-compliant. Selection depends on end-product regulatory requirements.

Inventory Availability: KEMET CDR33BX104AKUS7956 offers the highest inventory (3670 Pcs), followed by CDR33BX104AKWS7185 (3664 Pcs) and CDR33BX104AKWSAT (2620 Pcs).

Physical Dimensions: CDR33BX104AMWSAT and CDR33BX104AKWSAT have maximum thickness of 0.049" (1.25mm), while all other substitutes have 0.059" (1.50mm) maximum thickness. PCB layout constraints may require consideration of this difference.

Frequently Asked Questions (FAQ)

Q: Can CDR33BX104AKWSAT replace CDR33BX104AMWSAT directly?

A: Yes. CDR33BX104AKWSAT is a direct substitute with identical electrical specifications (0.1 µF, 50V, BX temperature coefficient, -55°C to 125°C operating range) and package (1210/3225 Metric). The primary difference is improved tolerance (±10% vs. ±20%) and identical thickness (1.25mm). Both are manufactured by Vishay Vitramon and comply with MIL-PRF-55681.

Q: What is the difference between the KEMET and KYOCERA AVX substitutes?

A: All KEMET parts (CDR33BX104AKUS7370, CDR33BX104AKUS7956, CDR33BX104AKWS7185, CDR33BX104AKYS) and the KYOCERA AVX part (CDR33BX104AKUS) share identical electrical specifications and package dimensions. The primary differences are manufacturer source, thickness (1.50mm vs. 1.25mm for Vishay parts), and REACH compliance status. KEMET parts are REACH Unaffected; KYOCERA AVX is REACH Affected.

Q: Does the thickness difference (1.25mm vs. 1.50mm) affect substitution?

A: Thickness differences do not affect electrical performance or functional substitution. However, PCB layout and component placement clearance must accommodate the maximum thickness of 0.059" (1.50mm) for KEMET and KYOCERA AVX parts versus 0.049" (1.25mm) for Vishay parts. Verify available board space before selection.

Q: Are all substitutes qualified for military applications?

A: Yes. All substitute parts comply with MIL-PRF-55681 military specification and maintain the S (0.001%) failure rate classification required for high-reliability applications.

Q: Which substitute offers the best inventory availability?

A: CDR33BX104AKUS7956 (KEMET) provides the highest inventory with 3670 pieces in stock, followed by CDR33BX104AKWS7185 (KEMET) with 3664 pieces.

Q: Is RoHS compliance a factor in substitution?

A: RoHS compliance does not affect functional substitution. CDR33BX104AKYS is ROHS3 compliant, while all other parts are RoHS non-compliant. Selection depends on end-product regulatory requirements and customer specifications.