Equivalent & Substitute Parts for CDR04BX104AMMSAT

Part Overview

The CDR04BX104AMMSAT is a 0.1 µF ±20% 50V ceramic capacitor in 1812 (4532 Metric) package manufactured by Vishay Vitramon. This military-grade multilayer ceramic capacitor (MLCC) is designed for high-reliability applications requiring MIL-PRF-55681 compliance. The part is currently active in production with 782 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances.

Substiute Parts

CDR04BX104AMMSAT

Vishay VitramonIn Stock: 821CDR04BX104AMMSAT Datasheet

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CDR04BX104AKWSAJ

Vishay VitramonIn Stock: 2874CDR04BX104AKWSAJ Datasheet

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CDR04BX104AKWS

KEMETIn Stock: 922CDR04BX104AKWS Datasheet

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CDR34BX104AKUS7185

KEMETIn Stock: 1169CDR34BX104AKUS7185 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDR04BX104AMMSAT is permissible when the following electrical and mechanical parameters remain constant or improve:

• Capacitance value: 0.1 µF (exact match required)
• Voltage rating: 50V (minimum, equal or higher acceptable)
• Temperature coefficient: BX (exact match required)
• Operating temperature range: -55°C to 125°C (exact match required)
• Package / Case: 1812 (4532 Metric) (exact match required)
• Mounting type: Surface Mount, MLCC (exact match required)
• Failure rate: S (0.001%) (exact match required)
• Moisture sensitivity level: 1 (Unlimited) (exact match required)

Tolerance may be tightened from ±20% to ±10% without affecting circuit functionality. Dimensional variations within the 1812 package specification are acceptable. All identified substitutes maintain military-grade MIL-PRF-55681 compliance and equivalent high-reliability performance.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts maintain electrical equivalence to the CDR04BX104AMMSAT across critical parameters: capacitance, voltage rating, temperature coefficient, operating temperature range, package type, failure rate, and moisture sensitivity level.

CDR04BX104AKWSAJ and CDR04BX104AKWS offer improved tolerance specification (±10% versus ±20%), enhancing circuit precision. Both are available in higher quantities and tape & reel packaging suitable for automated assembly.

CDR34BX104AKUS7185 provides the same electrical performance with reduced thickness (0.059" versus 0.080"), offering potential space savings in height-constrained applications while maintaining all critical electrical parameters.

The main part CDR04BX104AMMSAT maintains RoHS3 compliance. All substitute parts are RoHS non-compliant; compliance requirements must be evaluated against application specifications before selection.

Frequently Asked Questions (FAQ)

Q: Can CDR04BX104AKWSAJ be used as a direct replacement for CDR04BX104AMMSAT?

A: Yes. Both parts share identical capacitance (0.1 µF), voltage rating (50V), temperature coefficient (BX), operating temperature range (-55°C to 125°C), package (1812/4532 Metric), and failure rate (S). The substitute offers tighter tolerance (±10% versus ±20%). RoHS compliance differs; verify application requirements.

Q: What is the significance of the tolerance change from ±20% to ±10%?

A: Tolerance defines the acceptable deviation from the nominal capacitance value. A ±10% tolerance provides tighter control over actual capacitance values, improving circuit predictability and performance consistency. This represents an upgrade in specification precision.

Q: Are dimensional differences between substitute parts significant?

A: All parts conform to the 1812 (4532 Metric) package specification. CDR34BX104AKUS7185 has reduced thickness (0.059" versus 0.080"), which may be advantageous in space-constrained designs. Minor length and width variations (0.177" to 0.180" L, 0.125" to 0.126" W) remain within package tolerance and do not affect PCB footprint compatibility.

Q: What does the base product number (CDR04 versus CDR34) indicate?

A: The base product number identifies the product line within the military MIL-PRF-55681 series. CDR04 and CDR34 are distinct product lines from different manufacturers (Vishay Vitramon and KEMET respectively) but maintain equivalent electrical and mechanical specifications for this capacitance value and voltage rating.

Q: How does packaging format (bulk versus tape & reel) affect substitution?

A: Packaging format affects handling and assembly processes but not electrical or mechanical performance. Bulk packaging suits manual assembly; tape & reel packaging is optimized for automated pick-and-place equipment. Selection depends on manufacturing process requirements, not circuit functionality.

Q: Are all substitutes suitable for military applications?

A: All parts maintain military-grade MIL-PRF-55681 compliance and equivalent failure rate (S, 0.001%). RoHS compliance status differs; military specifications may require RoHS3 compliance (main part only) or permit RoHS non-compliant alternatives depending on procurement standards.