RSMF1JB220R Equivalent & Substitute Parts

Part Overview

The RSMF1JB220R is a 220 Ohms ±5% 1W through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal oxide film resistor features flame-proof 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 when packaging configurations differ or when enhanced thermal performance is required while maintaining core electrical specifications.

Substiute Parts

RSMF1JB220R

Stackpole Electronics IncIn Stock: 1100RSMF1JB220R Datasheet

Current PartRFQ

RSMF1JT220R

Stackpole Electronics IncIn Stock: 2850RSMF1JT220R Datasheet

DirectRFQ

RSF1JT220R

Stackpole Electronics IncIn Stock: 17064RSF1JT220R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RSMF1JB220R is determined by the following criteria:

Primary Substitution Criteria:

• Resistance value: 220 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 1W (exact match required)
• Composition: Metal Oxide Film (exact match required)
• Package type: Axial (exact match required)
• Number of terminations: 2 (exact match required)
• Compliance: ROHS3 Compliant and REACH Unaffected status maintained

Secondary Considerations:

• Operating temperature range may extend beyond the original specification
• Physical dimensions may vary within axial package constraints
• Packaging format (Bulk vs. Cut Tape) does not affect electrical compatibility
• Flame-proof or flame-retardant coating variations are acceptable

The RSMF1JT220R qualifies as a direct substitute, differing only in packaging format (Cut Tape vs. Bulk). The RSF1JT220R qualifies as a manufacturer-recommended substitute, offering extended operating temperature range (-55°C ~ 235°C) and improved thermal characteristics while maintaining all core electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

RSMF1JT220R Selection: Use RSMF1JT220R when Cut Tape packaging is preferred for automated assembly processes. This part maintains identical electrical specifications and physical dimensions to the RSMF1JB220R. Both parts are active products with full ROHS3 compliance and REACH unaffected status. Inventory availability is higher for the RSMF1JT220R (2751 Pcs vs. 1059 Pcs).

RSF1JT220R Selection: Use RSF1JT220R when extended operating temperature range (-55°C ~ 235°C) is required for high-temperature applications. This part offers improved thermal performance through flame-retardant coating and larger physical dimensions (0.177" Dia x 0.433" L). The RSF1JT220R maintains all core electrical parameters and compliance certifications. Inventory availability is significantly higher (17022 Pcs). Physical dimension differences require PCB layout verification for mechanical fit.

All three parts maintain active product status, ROHS3 compliance, and REACH unaffected designation, ensuring regulatory consistency across substitution options.

Frequently Asked Questions (FAQ)

Q: Can RSMF1JT220R replace RSMF1JB220R in existing designs? A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format only (Cut Tape vs. Bulk). No design changes are required.

Q: What are the physical dimension differences between RSMF1JB220R and RSF1JT220R? A: RSMF1JB220R measures 0.126" Dia x 0.354" L (3.20mm x 9.00mm). RSF1JT220R measures 0.177" Dia x 0.433" L (4.50mm x 11.00mm). The RSF1JT220R is larger and requires PCB layout verification for mechanical clearance.

Q: Does RSF1JT220R provide better performance than RSMF1JB220R? A: RSF1JT220R extends the operating temperature range to 235°C compared to 200°C for RSMF1JB220R. Both maintain identical electrical specifications (220 Ohms ±5%, 1W, ±200ppm/°C). Selection depends on application temperature requirements.

Q: Are all three parts ROHS3 compliant? A: Yes. RSMF1JB220R, RSMF1JT220R, and RSF1JT220R are all ROHS3 compliant and REACH unaffected.

Q: What is the difference between flame-proof and flame-retardant coating? A: RSMF1JB220R and RSMF1JT220R feature flame-proof characteristics. RSF1JT220R features flame-retardant coating. Both provide safety protection; flame-retardant coating in RSF1JT220R contributes to its extended temperature rating.

Q: Which part has the best inventory availability? A: RSF1JT220R has the highest inventory (17022 Pcs), followed by RSMF1JT220R (2751 Pcs), and RSMF1JB220R (1059 Pcs).