RSF2JB3R30 Equivalent & Substitute Parts

Part Overview

The RSF2JB3R30 is a 3.3 Ohms ±5% 2W through-hole axial resistor manufactured by Stackpole Electronics Inc. This metal oxide film resistor features flame retardant coating and safety design, suitable for applications requiring reliable power dissipation in compact form factors. The part maintains active product status with 731 units in current inventory. Substitute parts are identified to address packaging preferences, availability optimization, and operational continuity in production environments.

Substiute Parts

RSF2JB3R30

Stackpole Electronics IncIn Stock: 835RSF2JB3R30 Datasheet

Current PartRFQ

RSMF2JT3R30

Stackpole Electronics IncIn Stock: 9963RSMF2JT3R30 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RSF2JB3R30 is determined by the following critical parameters:

• Electrical Specifications: Resistance value (3.3 Ohms), tolerance (±5%), and power rating (2W) must remain identical
• Material Composition: Metal oxide film construction is required
• Package Configuration: Axial through-hole package type is mandatory
• Temperature Performance: Operating range (-55°C to 235°C) and temperature coefficient (±200ppm/°C) must be maintained
• Compliance Standards: RoHS3 compliance and REACH unaffected status must be preserved

The RSMF2JT3R30 qualifies as a direct substitute based on matching all electrical and material specifications. Packaging format differs (Cut Tape versus Bulk), and physical dimensions are reduced, but functional equivalence is maintained for circuit-level applications.

Parameter Comparison

Engineering Selection Recommendations

Both the RSF2JB3R30 and RSMF2JT3R30 are active products from Stackpole Electronics Inc with identical electrical performance specifications. Selection between these parts should be based on:

Packaging Requirements: The RSF2JB3R30 is supplied in bulk packaging, suitable for high-volume manufacturing environments with internal tape-and-reel handling. The RSMF2JT3R30 arrives in cut tape format, optimized for automated pick-and-place assembly systems.

Physical Space Constraints: The RSMF2JT3R30 features reduced physical dimensions (4.50mm diameter, 11.00mm length) compared to the RSF2JB3R30 (5.50mm diameter, 15.00mm length). Applications with space limitations may benefit from the smaller form factor.

Compliance and Certification: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and consumer applications across all specified operating temperatures.

Inventory Availability: The RSMF2JT3R30 maintains significantly higher stock levels (9926 units), providing supply chain flexibility for extended production runs.

Frequently Asked Questions (FAQ)

Q: Can the RSMF2JT3R30 replace the RSF2JB3R30 in existing circuit designs?

A: Yes. Both parts deliver identical electrical performance: 3.3 Ohms ±5% at 2W power dissipation across the full operating temperature range (-55°C to 235°C). The substitute maintains equivalent temperature coefficient (±200ppm/°C) and metal oxide film composition. Substitution is electrically transparent at the circuit level.

Q: What is the primary difference between these two part numbers?

A: The RSF2JB3R30 and RSMF2JT3R30 differ in packaging format and physical dimensions. The RSF2JB3R30 is supplied in bulk packaging with larger physical dimensions (5.50mm x 15.00mm). The RSMF2JT3R30 is supplied in cut tape format with compact dimensions (4.50mm x 11.00mm). Both are manufactured by Stackpole Electronics Inc using identical metal oxide film technology.

Q: Are there any thermal or environmental performance differences?

A: No. Both parts operate across -55°C to 235°C with ±200ppm/°C temperature coefficient. RoHS3 compliance and REACH unaffected status are maintained for both variants, ensuring equivalent environmental and regulatory performance.

Q: Which part should be selected for automated assembly?

A: The RSMF2JT3R30 in cut tape packaging is optimized for automated pick-and-place assembly systems. The RSF2JB3R30 in bulk packaging is suitable for manual assembly or environments with tape-and-reel handling infrastructure.

Q: Does the smaller physical size of the RSMF2JT3R30 affect performance?

A: No. Reduced physical dimensions do not impact electrical performance. Both parts deliver identical resistance, tolerance, power rating, and temperature characteristics. The compact form factor of the RSMF2JT3R30 is achieved through optimized design without performance compromise.