CB10JB3R30 Equivalent & Substitute Parts

Part Overview

The CB10JB3R30 is a 3.3 Ohm, 5% tolerance, 10W axial wirewound resistor manufactured by Stackpole Electronics Inc. This through-hole component features flame-proof and moisture-resistant construction with safety-rated design, suitable for applications requiring reliable power dissipation in harsh environments. The part maintains active product status with 901 units in current inventory. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers.

Substiute Parts

CB10JB3R30

Stackpole Electronics IncIn Stock: 967CB10JB3R30 Datasheet

Current PartRFQ

SQPW103R3J

TE Connectivity Passive ProductIn Stock: 2390SQPW103R3J Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CB10JB3R30 are qualified based on the following critical parameters:

• Resistance value: 3.3 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 10W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial through-hole (exact match required)
• Features: Flame proof, moisture resistant, safety-rated construction (all required)
• Regulatory compliance: ROHS3 compliant, REACH unaffected (required)

The SQPW103R3J from TE Connectivity Passive Product qualifies as a direct substitute, meeting all electrical and mechanical specifications while maintaining equivalent regulatory certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the CB10JB3R30 and SQPW103R3J maintain active product status with full ROHS3 compliance and REACH unaffected certification. Selection between these parts should be based on application-specific requirements:

The CB10JB3R30 provides a maximum operating temperature of 275°C with a temperature coefficient of ±200ppm/°C, suitable for high-temperature applications requiring tighter thermal stability.

The SQPW103R3J operates to 250°C maximum with a temperature coefficient of ±300ppm/°C, appropriate for standard industrial applications where the reduced upper temperature limit and slightly broader temperature coefficient are acceptable.

Both parts are wirewound axial resistors with identical electrical ratings (3.3 Ohms, ±5%, 10W) and equivalent mechanical construction featuring flame-proof and moisture-resistant properties. Inventory availability should be considered: CB10JB3R30 has 901 units in stock, while SQPW103R3J has 2295 units available.

Frequently Asked Questions (FAQ)

Q: Can SQPW103R3J replace CB10JB3R30 in all applications?

A: The SQPW103R3J is electrically and mechanically equivalent for applications operating within -55°C to 250°C. Applications requiring operation above 250°C or demanding temperature coefficient stability better than ±300ppm/°C require the CB10JB3R30.

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

A: The CB10JB3R30 has a temperature coefficient of ±200ppm/°C versus ±300ppm/°C for the SQPW103R3J. This means the CB10JB3R30 resistance value changes more slowly with temperature variations, providing better stability in precision circuits. For general-purpose applications, both are acceptable.

Q: Are the physical dimensions compatible?

A: Both parts use axial packaging. The CB10JB3R30 is specified as 0.374" square by 1.890" length. The SQPW103R3J is 0.394" by 0.354" rectangular by 1.890" length. Both fit standard through-hole PCB layouts designed for 10W axial resistors, though slight dimensional variations exist.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both CB10JB3R30 and SQPW103R3J are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS code 8533.21.0080.

Q: Which part should I select for new designs?

A: For new designs, either part is acceptable based on thermal and stability requirements. The SQPW103R3J offers higher inventory availability (2295 units). The CB10JB3R30 is preferred for applications requiring extended temperature operation to 275°C or superior temperature coefficient performance.