CB3JB12R0 Equivalent & Substitute Parts Reference

Part Overview

The CB3JB12R0 is a 12 Ohm, 3W wirewound axial resistor manufactured by Stackpole Electronics Inc. This through-hole component features flame-proof and moisture-resistant construction with safety-rated design, making it suitable for applications requiring reliable power dissipation and environmental protection. The part maintains active product status with 791 units in current inventory. Substitute parts may be required due to supply constraints, lead time considerations, or design flexibility in component sourcing.

Substiute Parts

CB3JB12R0

Stackpole Electronics IncIn Stock: 830CB3JB12R0 Datasheet

Current PartRFQ

PNP300JR-73-12R

YAGEOIn Stock: 12416PNP300JR-73-12R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CB3JB12R0 is determined by the following critical parameters:

• Resistance value: 12 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 3W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial through-hole (exact match required)
• Regulatory compliance: ROHS3 Compliant (minimum requirement)

The substitute part PNP300JR-73-12R meets all mandatory electrical and mechanical parameters. Both components are wirewound axial resistors with identical resistance, tolerance, and power specifications. Both maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both the CB3JB12R0 and PNP300JR-73-12R are functionally equivalent for applications requiring 12 Ohm, 3W wirewound axial resistors. Selection between these components should be based on:

• Supply availability and lead time requirements
• Operating temperature range constraints: The CB3JB12R0 supports -55°C ~ 275°C, while the PNP300JR-73-12R operates within -40°C ~ 200°C. Applications requiring operation below -40°C or above 200°C must use the CB3JB12R0.
• Physical dimensions: The CB3JB12R0 measures 0.315" Square x 0.866" L (8.00mm x 22.00mm), while the PNP300JR-73-12R measures 0.181" Dia x 0.453" L (4.60mm x 11.50mm). Space-constrained designs may benefit from the smaller PNP300JR-73-12R footprint.
• Both components maintain ROHS3 compliance and identical electrical specifications, ensuring regulatory and functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can PNP300JR-73-12R replace CB3JB12R0 in all applications?

A: PNP300JR-73-12R is electrically equivalent for resistance, tolerance, and power rating. However, operating temperature range differs: PNP300JR-73-12R is limited to -40°C ~ 200°C versus CB3JB12R0's -55°C ~ 275°C. Verify application temperature requirements before substitution.

Q: What are the physical dimension differences?

A: CB3JB12R0 measures 0.315" Square x 0.866" L (8.00mm x 22.00mm). PNP300JR-73-12R measures 0.181" Dia x 0.453" L (4.60mm x 11.50mm). The YAGEO part is significantly smaller and may require PCB layout verification.

Q: Are both parts RoHS compliant?

A: Yes. Both CB3JB12R0 and PNP300JR-73-12R are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Q: What is the difference between "Flame Proof" and "Flame Retardant Coating"?

A: Both designations indicate fire safety features. CB3JB12R0 specifies flame-proof construction with moisture resistance. PNP300JR-73-12R specifies flame-retardant coating. Both are safety-rated wirewound resistors suitable for general industrial applications.

Q: Can I use these parts interchangeably in production?

A: Electrical and regulatory specifications are equivalent. Verify PCB layout compatibility due to dimensional differences and confirm operating temperature requirements match application specifications before implementing production substitution.