CPCF0551K00JB31 Equivalent & Substitute Parts

Part Overview

The CPCF0551K00JB31 is a 51 kOhms ±5% 5W through-hole resistor manufactured by Vishay Dale. This metal film radial resistor features flame-proof and safety construction, designed for applications requiring reliable power dissipation in the 5-watt range. The part is currently active in production. Substitute parts are identified to address inventory availability, compliance requirements, or specific application needs while maintaining electrical and mechanical compatibility.

Substiute Parts

CPCF0551K00JB31

Vishay DaleIn Stock: 1023CPCF0551K00JB31 Datasheet

Current PartRFQ

CPCF0551K00JE32

Vishay DaleIn Stock: 961CPCF0551K00JE32 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CPCF0551K00JB31 is determined by strict equivalence across the following critical parameters:

• Resistance value: 51 kOhms
• Tolerance: ±5%
• Power rating: 5W
• Composition: Metal Film
• Package configuration: Radial
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -65°C to 225°C
• Physical dimensions: 13.00mm L x 9.00mm W, 25.48mm height
• Number of terminations: 2
• Features: Flame Proof, Safety

The identified substitute part CPCF0551K00JE32 meets all electrical and mechanical parameters. Differences exist only in packaging designation and compliance certifications, which do not affect functional interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both CPCF0551K00JB31 and CPCF0551K00JE32 are functionally equivalent for circuit applications requiring a 51 kOhms 5W metal film radial resistor. Selection between these parts should be based on compliance requirements and regulatory constraints applicable to the end application.

The CPCF0551K00JE32 is ROHS3 compliant, making it suitable for applications subject to RoHS directives. The CPCF0551K00JB31 is RoHS non-compliant and should be selected only where RoHS compliance is not a requirement. Both parts maintain identical electrical performance, thermal characteristics, and physical form factor.

Frequently Asked Questions (FAQ)

Q: Can CPCF0551K00JE32 be used as a direct replacement for CPCF0551K00JB31?

A: Yes. Both parts are electrically and mechanically identical. They share the same resistance value, tolerance, power rating, temperature coefficient, operating temperature range, and physical dimensions. The primary difference is RoHS compliance status.

Q: What is the significance of the different part number suffixes (JB31 vs JE32)?

A: The suffix designates the packaging designation and compliance certification level. The electrical and mechanical specifications remain unchanged between these variants.

Q: Are there any thermal or frequency-dependent performance differences between these parts?

A: No. Both parts share identical temperature coefficients (±50ppm/°C), operating temperature ranges (-65°C to 225°C), and metal film composition, ensuring equivalent performance across thermal and frequency operating conditions.

Q: Can these parts be used interchangeably on PCBs without layout modifications?

A: Yes. Both parts have identical physical dimensions (13.00mm L x 9.00mm W, 25.48mm seated height) and radial package configuration, requiring no PCB layout changes.

Q: Which part should be selected for new designs?

A: Selection depends on regulatory requirements. For applications requiring RoHS compliance, specify CPCF0551K00JE32. For applications without RoHS requirements, either part is acceptable based on availability and cost considerations.