CDR31BX152BKZSAT Equivalent & Substitute Parts

Part Overview

The CDR31BX152BKZSAT is a 1500 pF ±10% 100V ceramic capacitor manufactured by Vishay Vitramon, designed for high-reliability military applications under MIL-PRF-55681 specification. This surface-mount MLCC in 0805 (2012 Metric) package is currently active in production. Finding equivalent substitute parts is necessary to ensure supply chain continuity, optimize inventory management, and maintain design flexibility across procurement channels while preserving electrical and mechanical compatibility.

Substiute Parts

CDR31BX152BKZSAT

Vishay VitramonIn Stock: 739CDR31BX152BKZSAT Datasheet

Current PartRFQ

CDR31BX152BKWSAJ

Vishay VitramonIn Stock: 5878CDR31BX152BKWSAJ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDR31BX152BKZSAT is determined by strict equivalence across the following critical parameters:

• Capacitance Value: 1500 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)
• Physical Dimensions: 0.079" L x 0.049" W x 0.051" max thickness (exact match required)
• Series Compliance: Military, MIL-PRF-55681, CDR31 (exact match required)
• Failure Rate: S (0.001%) (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

The substitute part CDR31BX152BKWSAJ meets all these criteria. The only difference is packaging format: the main part uses standard packaging while the substitute is supplied in Tape & Reel (TR) format. This packaging difference does not affect electrical or mechanical compatibility and is purely a procurement and handling consideration.

Parameter Comparison

Engineering Selection Recommendations

Both CDR31BX152BKZSAT and CDR31BX152BKWSAJ are active production parts from Vishay Vitramon with identical electrical and mechanical specifications. Selection between these parts should be based on procurement and assembly requirements:

• CDR31BX152BKZSAT is suitable for applications requiring standard packaging format.
• CDR31BX152BKWSAJ is suitable for high-volume automated assembly operations utilizing tape and reel feeding systems.

Both parts maintain MIL-PRF-55681 military specification compliance, identical failure rate classification S (0.001%), and unlimited moisture sensitivity level. RoHS non-compliance status is consistent across both parts. No electrical performance degradation or functional limitation exists between these alternatives.

Frequently Asked Questions (FAQ)

Q: Can CDR31BX152BKWSAJ be used as a direct replacement for CDR31BX152BKZSAT?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Tape & Reel versus standard packaging). This does not affect circuit performance or board-level compatibility.

Q: Are there any differences in electrical performance between these parts?

A: No. Capacitance value, tolerance, voltage rating, temperature coefficient, operating temperature range, and failure rate are identical. Both parts meet the same MIL-PRF-55681 military specification.

Q: Does the packaging format affect PCB assembly compatibility?

A: The physical component dimensions and footprint are identical. Tape & Reel packaging is optimized for automated pick-and-place assembly, while standard packaging may be used for manual or lower-volume assembly. The actual component placed on the PCB is functionally equivalent.

Q: Are both parts currently available?

A: Yes. Both CDR31BX152BKZSAT and CDR31BX152BKWSAJ are active production parts with current inventory availability.

Q: What is the significance of the BX temperature coefficient?

A: BX indicates a temperature coefficient of ±15% over the operating range of -55°C to 125°C. This specification is identical for both parts and determines their suitability for military and high-reliability applications.

Q: Can these parts be mixed in the same production batch?

A: Yes, provided assembly processes accommodate both packaging formats. The electrical and mechanical specifications are identical, so circuit performance will not be affected by mixing these parts on the same board.