RSMF1JB100R Equivalent & Substitute Parts

Part Overview

The RSMF1JB100R is a 100 Ohms ±5% 1W through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal oxide film resistor features flame-proof construction and safety characteristics, designed for applications requiring reliable performance across industrial temperature ranges. The part is currently active in production with ROHS3 compliance and REACH unaffected status. Substitute parts are identified to address packaging availability, inventory levels, and operational temperature requirements while maintaining core electrical specifications.

Substiute Parts

RSMF1JB100R

Stackpole Electronics IncIn Stock: 781RSMF1JB100R Datasheet

Current PartRFQ

RSMF1JT100R

Stackpole Electronics IncIn Stock: 9966RSMF1JT100R Datasheet

DirectRFQ

RSF1JT100R

Stackpole Electronics IncIn Stock: 15379RSF1JT100R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RSMF1JB100R is determined by the following parameters:

• Resistance value: 100 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 1W (exact match required)
• Composition: Metal Oxide Film (exact match required)
• Package: Axial through-hole (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

Acceptable variations include packaging format (Bulk vs. Cut Tape), physical dimensions within the axial package category, maximum operating temperature (higher values are acceptable), and surface treatment features (Flame Proof vs. Flame Retardant Coating). All substitute parts maintain identical electrical performance and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status and full regulatory compliance under ROHS3 and REACH standards. Selection between RSMF1JB100R, RSMF1JT100R, and RSF1JT100R depends on application requirements and supply chain considerations:

RSMF1JB100R and RSMF1JT100R are functionally identical, differing only in packaging format (Bulk vs. Cut Tape). Both operate to -55°C ~ 200°C with identical physical dimensions and flame-proof construction.

RSF1JT100R extends the maximum operating temperature to 235°C and features flame-retardant coating instead of flame-proof construction. Physical dimensions are larger (0.177" Dia x 0.433" L vs. 0.126" Dia x 0.354" L). This part is suitable for applications requiring higher temperature performance or where the larger form factor is acceptable.

Frequently Asked Questions (FAQ)

Q: Can RSMF1JT100R directly replace RSMF1JB100R?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format: RSMF1JB100R is supplied in Bulk, while RSMF1JT100R is supplied in Cut Tape (CT). No circuit modifications are required.

Q: When should RSF1JT100R be used instead of RSMF1JB100R?

A: RSF1JT100R is appropriate when the application requires operation above 200°C, up to 235°C maximum. The larger physical dimensions (0.177" Dia x 0.433" L) must be accommodated in the PCB layout. Flame-retardant coating replaces flame-proof construction.

Q: Are there physical dimension constraints when substituting with RSF1JT100R?

A: Yes. RSF1JT100R has larger dimensions (0.177" Dia x 0.433" L) compared to RSMF series parts (0.126" Dia x 0.354" L). PCB footprint and component spacing must accommodate the larger form factor.

Q: Do all three parts meet the same regulatory requirements?

A: Yes. All parts are ROHS3 compliant and REACH unaffected, meeting identical regulatory standards.

Q: What is the difference between Flame Proof and Flame Retardant Coating?

A: RSMF series features flame-proof construction, while RSF series features flame-retardant coating. Both are safety features; the specific requirement depends on application standards and safety certifications.