RSF1JB220R Equivalent & Substitute Parts

Part Overview

The RSF1JB220R is a 220 Ohms ±5% 1W through-hole resistor manufactured by Stackpole Electronics Inc. This axial metal oxide film resistor features flame retardant coating and safety design, with an operating temperature range of -55°C to 235°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across packaging and series variations.

Substiute Parts

RSF1JB220R

Stackpole Electronics IncIn Stock: 1143RSF1JB220R Datasheet

Current PartRFQ

RSF1JT220R

Stackpole Electronics IncIn Stock: 17064RSF1JT220R Datasheet

DirectRFQ

RSMF2JT220R

Stackpole Electronics IncIn Stock: 886RSMF2JT220R Datasheet

UpgradeRFQ

RSMF1JT220R

Stackpole Electronics IncIn Stock: 2850RSMF1JT220R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution relationships are established based on the following criteria:

Direct Equivalent (Packaging Variation): RSF1JT220R maintains identical electrical specifications (220 Ohms, ±5%, 1W, Metal Oxide Film) and mechanical dimensions (0.177" Dia x 0.433" L). The difference is packaging format (Cut Tape vs. Bulk), which does not affect functional performance in circuit applications.

Manufacturer Recommended Substitute (Series Upgrade): RSMF1JT220R provides equivalent electrical performance (220 Ohms, ±5%, 1W, Metal Oxide Film) with enhanced flame proof safety features. Physical dimensions differ (0.126" Dia x 0.354" L vs. 0.177" Dia x 0.433" L), and operating temperature maximum is -55°C ~ 200°C. This part is suitable where space constraints or enhanced safety ratings are required.

Higher Power Rating Alternative: RSMF2JT220R maintains the same resistance and tolerance (220 Ohms, ±5%) but provides 2W power rating instead of 1W. This upgrade is applicable in circuits requiring higher power dissipation capability while maintaining identical electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

RSF1JT220R is the direct functional equivalent and primary substitute for RSF1JB220R. Both parts are Active status with identical electrical and thermal specifications. Selection between these parts depends on procurement requirements: Bulk packaging for RSF1JB220R versus Cut Tape format for RSF1JT220R.

RSMF1JT220R is the manufacturer-recommended upgrade option. It provides enhanced flame proof safety features compared to the flame retardant coating of the original part. The reduced physical size (0.126" Dia x 0.354" L) accommodates space-constrained designs. The operating temperature maximum of 200°C is suitable for applications not requiring the full 235°C capability of the original part.

RSMF2JT220R is selected when circuit design requires higher power dissipation. The 2W rating provides additional thermal margin while maintaining identical resistance and tolerance specifications. This part is suitable for applications where the 1W rating of RSF1JB220R presents thermal limitations.

All substitute parts maintain ROHS3 compliance and are Active status products with current manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can RSF1JT220R replace RSF1JB220R in production assembly?

A: Yes. RSF1JT220R is a direct functional equivalent with identical electrical specifications (220 Ohms, ±5%, 1W) and mechanical dimensions (0.177" Dia x 0.433" L). The only difference is packaging format (Cut Tape vs. Bulk). Circuit performance is unaffected by this substitution.

Q: What is the difference between RSF1JB220R and RSMF1JT220R?

A: Both parts provide 220 Ohms, ±5%, 1W specifications. RSMF1JT220R features flame proof safety design versus flame retardant coating on RSF1JB220R. Physical dimensions differ: RSMF1JT220R is smaller (0.126" Dia x 0.354" L vs. 0.177" Dia x 0.433" L). Operating temperature maximum is 200°C for RSMF1JT220R versus 235°C for RSF1JB220R.

Q: When should RSMF2JT220R be used instead of RSF1JB220R?

A: RSMF2JT220R is selected when circuit analysis indicates power dissipation exceeding 1W at the 220 Ohm resistance value. The 2W rating provides thermal margin for higher current applications while maintaining identical resistance and tolerance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. RSF1JT220R, RSMF1JT220R, and RSMF2JT220R are all ROHS3 compliant, matching the compliance status of RSF1JB220R.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (Bulk, Cut Tape, or Tape & Reel) is a procurement and assembly consideration only. Electrical specifications and circuit performance remain identical across all packaging formats for equivalent part numbers.