CB3JB33R0 Equivalent & Substitute Parts

Part Overview

The CB3JB33R0 is a 33 Ohm, 5%, 3W 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 active in production with 1051 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required for design flexibility, supply chain continuity, or inventory optimization.

Substiute Parts

CB3JB33R0

Stackpole Electronics IncIn Stock: 1076CB3JB33R0 Datasheet

Current PartRFQ

PNP300JR-73-33R

YAGEOIn Stock: 4159PNP300JR-73-33R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CB3JB33R0 are qualified based on the following critical parameters:

• Resistance value: 33 Ohms (exact match required)
• Tolerance: ±5% (electrical accuracy specification)
• Power rating: 3W (thermal dissipation capability)
• Composition: Wirewound (construction type)
• Package: Axial (mechanical form factor and PCB compatibility)
• Regulatory compliance: ROHS3 Compliant status

The PNP300JR-73-33R from YAGEO meets these core substitution criteria. Both parts share identical electrical specifications for resistance, tolerance, and power rating, with axial package compatibility for direct circuit board replacement.

Parameter Comparison

Engineering Selection Recommendations

Both the CB3JB33R0 and PNP300JR-73-33R are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement. The primary distinction is the operating temperature range: the CB3JB33R0 operates from -55°C to 275°C, while the PNP300JR-73-33R operates from -40°C to 200°C. Selection between these parts depends on the specific thermal environment of the application. For applications requiring the extended lower temperature limit of -55°C or the extended upper temperature limit of 275°C, the CB3JB33R0 is the appropriate choice. For applications within the -40°C to 200°C range, either part is electrically and mechanically compatible.

Frequently Asked Questions (FAQ)

Q: Can the PNP300JR-73-33R directly replace the CB3JB33R0 in all applications?

A: Direct replacement is possible for applications operating within the -40°C to 200°C temperature range. Applications requiring operation below -40°C or above 200°C require the CB3JB33R0 due to its extended operating temperature specification.

Q: Are the physical dimensions compatible for PCB layout?

A: Both parts use axial package configuration. The CB3JB33R0 measures 0.315" square x 0.866" L (8.00mm x 22.00mm), while the PNP300JR-73-33R measures 0.181" Dia x 0.453" L (4.60mm x 11.50mm). The PNP300JR-73-33R is physically smaller and will fit in the same PCB footprint designed for the CB3JB33R0, but layout verification is necessary for applications with tight spacing constraints.

Q: Do both parts meet the same safety and environmental standards?

A: Both parts are ROHS3 compliant and REACH unaffected. The CB3JB33R0 features flame-proof and moisture-resistant construction, while the PNP300JR-73-33R features flame-retardant coating. Both include safety-rated design. Compliance verification with specific application standards should be performed based on end-use requirements.

Q: What is the difference in packaging format?

A: The CB3JB33R0 is supplied in bulk packaging, while the PNP300JR-73-33R is supplied in cut tape (CT) format. This affects handling and automated assembly processes but does not impact electrical or mechanical compatibility.