CDR01BP181BJYSAT Equivalent & Substitute Parts

Part Overview

The CDR01BP181BJYSAT is a 180 pF ceramic capacitor rated at 100V with BP temperature coefficient, manufactured by Vishay Vitramon under the military-grade CDR01 series (MIL-PRF-55681). This surface-mount MLCC in 0805 package format is designed for high-reliability applications requiring stable performance across -55°C to 125°C operating range. The part maintains active product status with 884 units currently in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained within allowable parameter tolerances.

Substiute Parts

CDR01BP181BJYSAT

Vishay VitramonIn Stock: 896CDR01BP181BJYSAT Datasheet

Current PartRFQ

CDR31BP181BFUS7185

KEMETIn Stock: 1302CDR31BP181BFUS7185 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDR01BP181BJYSAT is determined by strict adherence to the following parameters:

Critical Parameters (Must Match Exactly):

• Capacitance: 180 pF
• Voltage Rating: 100V
• Temperature Coefficient: BP
• Operating Temperature Range: -55°C to 125°C
• Package / Case: 0805 (2012 Metric)
• Mounting Type: Surface Mount, MLCC
• Failure Rate: S (0.001%)
• MIL-PRF-55681 compliance

Allowable Variation Parameters:

• Tolerance: ±5% (main part) to ±1% (substitute) — tighter tolerance is acceptable
• Physical dimensions: Minor variations within package specification are permissible
• Manufacturer: Different qualified manufacturers acceptable under same military standard

The CDR31BP181BFUS7185 qualifies as a substitute because it maintains all critical electrical and mechanical parameters while offering improved tolerance specification (±1% versus ±5%).

Parameter Comparison

Engineering Selection Recommendations

CDR01BP181BJYSAT (Main Part):

• Primary selection for applications requiring Vishay Vitramon sourcing or existing supply chain qualification
• RoHS3 compliant, suitable for commercial and industrial applications with environmental restrictions
• Moisture Sensitivity Level 1 (Unlimited) provides maximum handling flexibility
• Active product status with established inventory (884 units)

CDR31BP181BFUS7185 (Substitute):

• Acceptable alternative when KEMET sourcing is qualified or preferred
• Tighter tolerance specification (±1%) provides improved capacitance accuracy for precision circuits
• Thinner profile (1.30mm vs 1.40mm) may offer advantages in space-constrained layouts
• Higher inventory availability (1209 units) supports rapid procurement
• Note: RoHS non-compliant status requires verification against end-application environmental requirements
• REACH Affected status requires compliance confirmation for EU-regulated applications

Both parts maintain identical electrical performance, military-grade reliability (Failure Rate S), and MIL-PRF-55681 compliance. Selection between them depends on supply chain qualification, compliance requirements, and tolerance specifications needed for the specific application.

Frequently Asked Questions (FAQ)

Q: Can CDR31BP181BFUS7185 be used as a direct replacement for CDR01BP181BJYSAT?

A: Yes, within the constraints of your application's compliance and sourcing requirements. Both parts share identical capacitance (180 pF), voltage rating (100V), temperature coefficient (BP), operating range (-55°C to 125°C), package format (0805), and military-grade reliability (MIL-PRF-55681, Failure Rate S). The substitute offers tighter tolerance (±1% vs ±5%) and thinner profile. Verify RoHS and REACH compliance requirements for your end application before selection.

Q: What is the significance of the ±1% tolerance on the substitute part?

A: The CDR31BP181BFUS7185 provides tighter capacitance tolerance (±1%) compared to the main part (±5%). This means the actual capacitance value will remain closer to the nominal 180 pF specification. Applications requiring precise capacitance values benefit from this tighter tolerance. Applications tolerant of wider capacitance variation can use either part.

Q: Are there physical compatibility concerns between these parts?

A: Both parts use the 0805 (2012 Metric) package format and are surface-mount MLCCs, ensuring PCB footprint compatibility. The substitute is slightly thinner (1.30mm vs 1.40mm maximum thickness), which is not a compatibility issue. Verify your PCB design accommodates the thinner profile if height clearance is constrained.

Q: What compliance differences exist between these parts?

A: The main part (CDR01BP181BJYSAT) is RoHS3 compliant, while the substitute (CDR31BP181BFUS7185) is RoHS non-compliant and REACH Affected. Applications subject to RoHS or REACH regulations must use the main part or verify exemptions. Applications without these regulatory requirements can use either part.

Q: Do both parts meet military specifications?

A: Yes. Both parts comply with MIL-PRF-55681 and maintain military-grade Failure Rate S (0.001%), ensuring high reliability for defense and aerospace applications. The different base product numbers (CDR01 vs CDR31) reflect different manufacturer series within the same military standard.

Q: Which part should I select for new designs?

A: Selection depends on your specific requirements: choose CDR01BP181BJYSAT if RoHS3 compliance is mandatory or if Vishay Vitramon is your qualified supplier; choose CDR31BP181BFUS7185 if tighter tolerance (±1%) is required, KEMET is your qualified supplier, or if the thinner profile provides layout advantages. Both parts are active and in stock.