RSF2JB39R0 Equivalent & Substitute Parts

Part Overview

The RSF2JB39R0 is a 39 Ohm, 2W axial through-hole resistor manufactured by Stackpole Electronics Inc. This metal oxide film resistor features flame retardant coating and is designed for general-purpose applications requiring reliable power dissipation in compact form factors. The part is currently active in production with ROHS3 compliance and REACH unaffected status. Substitute parts may be required due to packaging availability, inventory constraints, or specific application packaging requirements.

Substiute Parts

RSF2JB39R0

Stackpole Electronics IncIn Stock: 1034RSF2JB39R0 Datasheet

Current PartRFQ

RSMF2JT39R0

Stackpole Electronics IncIn Stock: 824RSMF2JT39R0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RSF2JB39R0 is determined by the following critical parameters:

• Resistance value: 39 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 2W (exact match required)
• Composition: Metal Oxide Film (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C to 235°C (exact match required)
• Package type: Axial (exact match required)
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected (exact match required)

The RSMF2JT39R0 qualifies as a direct substitute because it maintains identical electrical specifications and regulatory compliance. The primary difference is packaging format (Bulk versus Tape & Reel) and physical dimensions, which do not affect electrical performance or functional compatibility in axial through-hole applications.

Parameter Comparison

Engineering Selection Recommendations

Both RSF2JB39R0 and RSMF2JT39R0 are active production parts with identical electrical performance and regulatory compliance. Selection between these parts should be based on:

• Packaging requirements: RSF2JB39R0 is supplied in Bulk format; RSMF2JT39R0 is supplied in Tape & Reel format
• Physical dimensions: RSMF2JT39R0 has a smaller form factor (4.50mm diameter, 11.00mm length) compared to RSF2JB39R0 (5.50mm diameter, 15.00mm length)
• Inventory availability and procurement lead times

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility in applicable applications.

Frequently Asked Questions (FAQ)

Q: Can RSMF2JT39R0 be used as a direct replacement for RSF2JB39R0?

A: Yes. Both parts have identical electrical specifications (39 Ohms, ±5%, 2W, metal oxide film composition) and operating characteristics (-55°C to 235°C, ±200ppm/°C temperature coefficient). The primary differences are packaging format and physical dimensions, which do not affect electrical performance in axial through-hole applications.

Q: What is the difference between Bulk and Tape & Reel packaging?

A: Bulk packaging (RSF2JB39R0) supplies components loose or in bags, suitable for manual assembly or small-volume applications. Tape & Reel packaging (RSMF2JT39R0) supplies components on continuous tape for automated pick-and-place assembly equipment. Both formats contain the same component.

Q: Are there any compliance differences between these parts?

A: No. Both RSF2JB39R0 and RSMF2JT39R0 are ROHS3 compliant and REACH unaffected, ensuring equivalent regulatory status for applications requiring these certifications.

Q: Does the smaller physical size of RSMF2JT39R0 affect compatibility?

A: Physical dimensions do not affect electrical performance. However, PCB layout and mechanical clearance requirements should be verified for the specific application. The RSMF2JT39R0 (4.50mm x 11.00mm) is smaller than the RSF2JB39R0 (5.50mm x 15.00mm), which may provide layout advantages in space-constrained designs.

Q: What determines substitution eligibility for this resistor?

A: Substitution is valid only when the following parameters match exactly: resistance value (39 Ohms), tolerance (±5%), power rating (2W), composition (metal oxide film), temperature coefficient (±200ppm/°C), operating temperature range (-55°C to 235°C), package type (axial), and regulatory compliance (ROHS3, REACH unaffected).