CB5JB3R90 Equivalent & Substitute Parts

Part Overview

The CB5JB3R90 is a 3.9 Ohms ±5% 5W through-hole axial wirewound resistor manufactured by Stackpole Electronics Inc. This component is designed for applications requiring flame-proof and moisture-resistant performance in high-power dissipation circuits. The part maintains Active product status with 826 units currently in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers.

Substiute Parts

CB5JB3R90

Stackpole Electronics IncIn Stock: 873CB5JB3R90 Datasheet

Current PartRFQ

SQPW53R9J

TE Connectivity Passive ProductIn Stock: 1422SQPW53R9J Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CB5JB3R90 are qualified based on the following critical parameters:

• Resistance value: 3.9 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 5W (exact match required)
• Composition: Wirewound (exact match required)
• Package type: Axial (exact match required)
• Features: Flame Proof, Moisture Resistant, Safety (all required)
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected, EAR99 classification

The SQPW53R9J from TE Connectivity Passive Product meets all critical electrical and mechanical parameters. Minor variations in physical dimensions and temperature coefficient fall within acceptable engineering tolerances for this component category.

Parameter Comparison

Engineering Selection Recommendations

Both the CB5JB3R90 and SQPW53R9J are Active status products with full ROHS3 compliance and REACH unaffected designation. Selection between these parts should be based on application-specific requirements:

The CB5JB3R90 provides a maximum operating temperature of 275°C with a temperature coefficient of ±200ppm/°C, suitable for high-temperature environments requiring tighter thermal stability.

The SQPW53R9J operates to 250°C with a temperature coefficient of ±300ppm/°C, appropriate for standard industrial applications where the reduced upper temperature limit and slightly higher thermal drift are acceptable.

Both parts maintain identical electrical specifications (3.9 Ohms ±5%, 5W) and feature sets (Flame Proof, Moisture Resistant, Safety). Packaging format is Axial for both, ensuring mechanical compatibility in through-hole PCB designs.

Frequently Asked Questions (FAQ)

Q: Can SQPW53R9J replace CB5JB3R90 in all applications?

A: The SQPW53R9J is electrically and mechanically equivalent for applications operating below 250°C. Applications requiring operation above 250°C or demanding temperature coefficient stability better than ±300ppm/°C should retain the CB5JB3R90.

Q: Are there physical dimension differences between these parts?

A: Both parts use Axial package configuration. The CB5JB3R90 measures 0.374" Square x 0.866" L (9.50mm x 22.00mm). The SQPW53R9J measures 0.394" x 0.354" Rectangular x 0.866" L (10.00mm x 9.00mm x 22.00mm). Both fit standard through-hole PCB layouts designed for 5W axial resistors.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both CB5JB3R90 and SQPW53R9J are ROHS3 Compliant, REACH Unaffected, and classified as EAR99 for export control purposes.

Q: What is the primary difference between these substitute parts?

A: The primary differences are maximum operating temperature (CB5JB3R90: 275°C vs. SQPW53R9J: 250°C) and temperature coefficient (CB5JB3R90: ±200ppm/°C vs. SQPW53R9J: ±300ppm/°C). Electrical specifications and safety features are identical.