RSF1JB100R Equivalent & Substitute Parts

Part Overview

The RSF1JB100R is a 100 Ohms ±5% 1W through-hole resistor manufactured by Stackpole Electronics Inc. This metal oxide film axial resistor features flame retardant coating and safety design, with an operating temperature range of -55°C to 235°C. The part is currently active in production with 891 pieces in stock. Substitute parts are necessary to address packaging requirements, tolerance specifications, power rating needs, or inventory availability while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	100 Ohms
Tolerance	±5%
Power Rating	1W
Composition	Metal Oxide Film
Package Type	Axial
Temperature Coefficient	±200ppm/°C
Operating Temperature Range	-55°C ~ 235°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the RSF1JB100R is determined by the following criteria:

Electrical Parameters (Must Match):

Resistance value: 100 Ohms
Tolerance: ±5% or tighter
Power rating: 1W or higher
Composition: Metal Oxide Film
Temperature coefficient: ±200ppm/°C

Mechanical Parameters (Must Match):

Package type: Axial
Number of terminations: 2

Allowed Variations:

Packaging format (Bulk, Cut Tape, Tape & Reel)
Operating temperature upper limit (235°C or lower acceptable)
Safety features (Flame Retardant or Flame Proof both acceptable)

The substitute parts listed maintain all critical electrical specifications while offering variations in packaging, tolerance precision, power capability, or physical dimensions that may be required for specific applications.

Parameter Comparison

Parameter	RSF1JB100R	RSF1JT100R	RSF1FT100R	RSMF2JT100R	RSMF1JT100R
Manufacturer	Stackpole Electronics Inc	Stackpole Electronics Inc	Stackpole Electronics Inc	Stackpole Electronics Inc	Stackpole Electronics Inc
Resistance	100 Ohms	100 Ohms	100 Ohms	100 Ohms	100 Ohms
Tolerance	±5%	±5%	±1%	±5%	±5%
Power Rating	1W	1W	1W	2W	1W
Composition	Metal Oxide Film	Metal Oxide Film	Metal Oxide Film	Metal Oxide Film	Metal Oxide Film
Package Type	Axial	Axial	Axial	Axial	Axial
Temperature Coefficient	±200ppm/°C	±200ppm/°C	±200ppm/°C	±200ppm/°C	±200ppm/°C
Operating Temperature	-55°C ~ 235°C	-55°C ~ 235°C	-55°C ~ 235°C	-55°C ~ 235°C	-55°C ~ 200°C
Packaging Format	Bulk	Cut Tape (CT)	Tape & Reel (TR)	Cut Tape (CT)	Cut Tape (CT)
Product Status	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

RSF1JT100R: Direct substitute with identical electrical specifications. Differs only in packaging format (Cut Tape vs. Bulk). Suitable for applications requiring tape packaging. All compliance certifications match the main part.

RSF1FT100R: Upgrade option with improved tolerance (±1% vs. ±5%). Maintains 1W power rating and identical operating temperature range. Tape & Reel packaging format. Recommended for precision applications requiring tighter tolerance control. All compliance certifications match the main part.

RSMF2JT100R: Upgrade option with increased power rating (2W vs. 1W). Maintains ±5% tolerance and identical operating temperature range. Flame Proof safety feature (vs. Flame Retardant). Cut Tape packaging. Suitable for applications requiring higher power dissipation capability. All compliance certifications match the main part.

RSMF1JT100R: Manufacturer-recommended substitute with identical electrical specifications (100 Ohms, ±5%, 1W). Differs in physical dimensions (0.126" Dia x 0.354" L vs. 0.177" Dia x 0.433" L) and operating temperature upper limit (200°C vs. 235°C). Flame Proof safety feature. Cut Tape packaging. Suitable for space-constrained applications where the reduced physical size is beneficial. All compliance certifications match the main part.

Frequently Asked Questions (FAQ)

Q: Can RSF1JT100R replace RSF1JB100R directly? A: Yes. Both parts have identical electrical specifications (100 Ohms, ±5%, 1W, Metal Oxide Film). The only difference is packaging format (Cut Tape vs. Bulk). Electrical and mechanical compatibility is complete.

Q: What is the advantage of RSF1FT100R over RSF1JB100R? A: RSF1FT100R provides tighter tolerance (±1% vs. ±5%) while maintaining all other specifications. This is beneficial for applications requiring higher precision. Power rating and operating temperature range remain unchanged.

Q: When should RSMF2JT100R be used instead of RSF1JB100R? A: RSMF2JT100R is appropriate when the application requires higher power dissipation (2W vs. 1W). All other electrical parameters remain identical. Physical dimensions are the same.

Q: What is the difference between RSMF1JT100R and RSF1JB100R? A: RSMF1JT100R has smaller physical dimensions (0.126" Dia x 0.354" L vs. 0.177" Dia x 0.433" L) and a lower operating temperature upper limit (200°C vs. 235°C). Electrical specifications are identical. Use RSMF1JT100R in space-constrained designs where the reduced size is required.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts (RSF1JT100R, RSF1FT100R, RSMF2JT100R, RSMF1JT100R) are ROHS3 compliant and REACH unaffected, matching the compliance status of RSF1JB100R.

Q: Can I use a substitute part with different packaging format? A: Yes. Packaging format (Bulk, Cut Tape, Tape & Reel) does not affect electrical or mechanical compatibility. Selection depends on assembly process requirements and inventory management preferences.

Q: What is the difference between Flame Retardant and Flame Proof? A: Both safety features are acceptable for substitution. Flame Retardant (RSF series) and Flame Proof (RSMF series) represent different safety classifications. Selection depends on application safety requirements.

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