RSF2JB68R0 Equivalent & Substitute Parts

Part Overview

The RSF2JB68R0 is a 68 Ohms ±5% 2W through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal oxide film resistor features flame retardant coating and safety design, suitable for applications requiring reliable power dissipation in the 2W range. 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

RSF2JB68R0

Stackpole Electronics IncIn Stock: 1142RSF2JB68R0 Datasheet

Current PartRFQ

RSMF2JT68R0

Stackpole Electronics IncIn Stock: 4911RSMF2JT68R0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The RSMF2JT68R0 qualifies as a direct substitute for the RSF2JB68R0 based on the following critical parameters:

• Identical resistance value: 68 Ohms
• Identical tolerance: ±5%
• Identical power rating: 2W
• Identical composition: Metal Oxide Film
• Identical package type: Axial
• Identical temperature coefficient: ±200ppm/°C
• Identical operating temperature range: -55°C ~ 235°C
• Identical number of terminations: 2
• Identical RoHS and REACH compliance status

The primary difference between these parts is packaging format (Bulk versus Cut Tape) and physical dimensions. The RSMF2JT68R0 features a smaller form factor (0.177" Dia x 0.433" L versus 0.217" Dia x 0.591" L) and flame proof construction compared to the flame retardant coating of the RSF2JB68R0.

Parameter Comparison

Engineering Selection Recommendations

Both the RSF2JB68R0 and RSMF2JT68R0 meet identical electrical specifications and regulatory requirements. Selection between these parts should be based on:

1. PCB layout constraints: The RSMF2JT68R0 smaller form factor (4.50mm x 11.00mm) accommodates space-restricted designs compared to the RSF2JB68R0 (5.50mm x 15.00mm).

2. Packaging requirements: The RSF2JB68R0 is supplied in Bulk packaging, while the RSMF2JT68R0 is supplied in Cut Tape format. Choose based on assembly process and inventory management needs.

3. Safety rating: The RSMF2JT68R0 features flame proof construction versus flame retardant coating on the RSF2JB68R0. Both meet safety requirements; flame proof construction provides enhanced protection in high-temperature or fire-risk environments.

4. Availability: Both parts are active products with current inventory. The RSMF2JT68R0 has higher stock availability (4896 Pcs versus 1102 Pcs).

Frequently Asked Questions (FAQ)

Q: Can the RSMF2JT68R0 directly replace the RSF2JB68R0 in my circuit?

A: Yes. Both parts have identical electrical specifications: 68 Ohms ±5% tolerance, 2W power rating, metal oxide film composition, ±200ppm/°C temperature coefficient, and -55°C ~ 235°C operating range. Substitution is electrically valid.

Q: What is the difference between flame retardant and flame proof?

A: Flame retardant coating (RSF2JB68R0) slows flame propagation. Flame proof construction (RSMF2JT68R0) prevents flame propagation entirely. Both meet safety standards; flame proof provides higher protection in critical applications.

Q: Will the smaller size of the RSMF2JT68R0 affect performance?

A: No. Physical dimensions do not affect electrical performance. The smaller form factor (4.50mm x 11.00mm versus 5.50mm x 15.00mm) is suitable for space-constrained PCB layouts without performance degradation.

Q: What packaging format should I choose?

A: Bulk packaging (RSF2JB68R0) is suitable for high-volume manual assembly or reel feeding. Cut Tape packaging (RSMF2JT68R0) is optimized for automated pick-and-place assembly and tape-based component handling.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the RSF2JB68R0 and RSMF2JT68R0 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.