CB25JB47R0 Equivalent & Substitute Parts

Part Overview

The CB25JB47R0 is a 47 Ohm, 5%, 25W axial wirewound resistor manufactured by Stackpole Electronics Inc. This through-hole component features flame-proof and moisture-resistant construction with safety-rated design. The part is currently obsolete, making identification of compatible substitutes essential for ongoing maintenance, repair, and legacy system support. The WCB25JB47R0 series provides direct functional equivalence with improved specifications and active product status.

Substiute Parts

CB25JB47R0

Stackpole Electronics IncIn Stock: 751CB25JB47R0 Datasheet

Current PartRFQ

WCB25JB47R0

Stackpole Electronics IncIn Stock: 1215WCB25JB47R0 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The WCB25JB47R0 qualifies as a direct substitute for the CB25JB47R0 based on matching electrical and mechanical parameters. Substitution is valid when the following criteria are met:

• Resistance value: 47 Ohms (identical)
• Tolerance: ±5% (identical)
• Power rating: 25W (identical)
• Package configuration: Axial (identical)
• Operating temperature range: -55°C to 275°C (identical)
• Composition: Wirewound (identical)
• Features: Flame Proof, Moisture Resistant, Safety (identical)
• Regulatory compliance: ROHS3 Compliant (identical)
• Physical dimensions: 2.500" L x 0.500" W / 64.60mm x 12.70mm (identical)

The WCB25JB47R0 maintains all critical electrical and mechanical specifications required for direct replacement. The improved temperature coefficient (±20ppm/°C versus ±200ppm/°C) and active product status represent enhancements over the obsolete CB25JB47R0.

Parameter Comparison

Engineering Selection Recommendations

The WCB25JB47R0 is the appropriate substitute for the obsolete CB25JB47R0. Both parts maintain identical electrical specifications, mechanical form factor, and regulatory compliance status. The WCB25JB47R0 offers superior temperature stability with a temperature coefficient of ±20ppm/°C compared to the CB25JB47R0's ±200ppm/°C, providing improved performance in temperature-sensitive applications. Active product status and confirmed inventory availability of the WCB25JB47R0 support its selection for new designs and legacy system replacements.

Frequently Asked Questions (FAQ)

Q: Can the WCB25JB47R0 directly replace the CB25JB47R0 in existing circuits?

A: Yes. Both parts share identical resistance, tolerance, power rating, package type, and operating temperature range. Physical dimensions are identical, enabling direct board-level substitution without layout modifications.

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

A: The WCB25JB47R0 exhibits a temperature coefficient of ±20ppm/°C versus the CB25JB47R0's ±200ppm/°C. This represents improved stability across the operating temperature range of -55°C to 275°C. In applications where resistance drift with temperature is critical, the WCB25JB47R0 provides superior performance.

Q: Are there packaging differences between these parts?

A: The CB25JB47R0 is supplied in standard packaging, while the WCB25JB47R0 is supplied in bulk packaging. Both maintain identical axial form factor and dimensions suitable for through-hole PCB assembly.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the CB25JB47R0 and WCB25JB47R0 are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8533.29.0000.

Q: Why is the CB25JB47R0 listed as obsolete?

A: The CB25JB47R0 has been discontinued by the manufacturer. The WCB25JB47R0 series represents the active product line continuation with equivalent functionality and enhanced specifications.