RSF1JB680R Equivalent & Substitute Parts

Part Overview

The RSF1JB680R is a 680 Ohms ±5% 1W through-hole resistor manufactured by Stackpole Electronics Inc. This metal oxide film axial resistor features flame retardant coating and safety design, operating across a temperature range of -55°C to 235°C. The part is currently active in production with ROHS3 compliance and REACH unaffected status. Equivalent and substitute parts are identified when identical electrical specifications and mechanical compatibility are maintained, or when upgraded performance characteristics are available within the same product family.

Substiute Parts

RSF1JB680R

Stackpole Electronics IncIn Stock: 799RSF1JB680R Datasheet

Current PartRFQ

RSF1JT680R

Stackpole Electronics IncIn Stock: 7829RSF1JT680R Datasheet

DirectRFQ

RSMF2JT680R

Stackpole Electronics IncIn Stock: 1083RSMF2JT680R Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the RSF1JB680R is determined by strict adherence to the following electrical and mechanical parameters:

Direct Equivalents maintain identical specifications across all critical parameters: 680 Ohms resistance, ±5% tolerance, 1W power rating, metal oxide film composition, axial package configuration, ±200ppm/°C temperature coefficient, and -55°C to 235°C operating temperature range. Packaging format differences (Bulk versus Cut Tape) do not affect electrical or mechanical compatibility.

Upgraded Substitutes provide enhanced performance while maintaining core electrical specifications. The RSMF2JT680R increases power rating to 2W while preserving all other parameters, suitable for applications requiring higher power dissipation capability within the same footprint and electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

RSF1JT680R serves as a direct functional equivalent to RSF1JB680R. Both parts maintain identical electrical and mechanical specifications with ROHS3 compliance and active production status. Selection between these parts is determined by packaging requirements: RSF1JB680R is supplied in Bulk packaging, while RSF1JT680R is supplied in Cut Tape format. Both are suitable for direct substitution in applications designed for the RSF1JB680R.

RSMF2JT680R represents an upgraded alternative with doubled power rating (2W versus 1W) while maintaining all other electrical parameters and physical dimensions. This part is appropriate for applications where the original 1W rating is marginal or where enhanced thermal margin is required. The RSMF2JT680R is supplied in Tape & Reel packaging and carries ROHS3 compliance with active production status.

Frequently Asked Questions (FAQ)

Q: Can RSF1JT680R replace RSF1JB680R directly? A: Yes. RSF1JT680R is electrically and mechanically identical to RSF1JB680R. The only difference is packaging format (Cut Tape versus Bulk). Both parts are suitable for direct substitution in circuit designs.

Q: What is the primary difference between RSF1JB680R and RSMF2JT680R? A: The RSMF2JT680R has a 2W power rating compared to the 1W rating of RSF1JB680R. All other specifications—resistance value, tolerance, temperature coefficient, operating temperature range, and physical dimensions—remain identical. The RSMF2JT680R is suitable for applications requiring higher power dissipation.

Q: Are all three parts physically interchangeable? A: Yes. All three parts share identical physical dimensions (0.177" Dia x 0.433" L / 4.50mm x 11.00mm) and axial package configuration, allowing direct board-level substitution.

Q: Do packaging differences affect electrical performance? A: No. Packaging format (Bulk, Cut Tape, or Tape & Reel) does not affect electrical characteristics or performance. Selection is based on procurement and assembly process requirements.

Q: Are all substitute parts ROHS3 compliant? A: Yes. RSF1JB680R, RSF1JT680R, and RSMF2JT680R are all ROHS3 compliant with REACH unaffected status.