RSF100JB-73-1K3 Equivalent & Substitute Parts

Part Overview

The RSF100JB-73-1K3 is a 1.3 kOhms ±5% 1W axial through-hole resistor manufactured by YAGEO. This metal oxide film resistor features flame-proof and safety characteristics, with an operating temperature range of -55°C to 235°C. The part is currently active in production with 2,864 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit applications.

Substiute Parts

RSF100JB-73-1K3

YAGEOIn Stock: 2898RSF100JB-73-1K3 Datasheet

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ROX2SJ1K3

TE Connectivity Passive ProductIn Stock: 3017ROX2SJ1K3 Datasheet

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RSF1JT1K30

Stackpole Electronics IncIn Stock: 3393RSF1JT1K30 Datasheet

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RSMF2JT1K30

Stackpole Electronics IncIn Stock: 1154RSMF2JT1K30 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RSF100JB-73-1K3 are qualified based on the following criteria:

Electrical Parameters (Must Match):

• Resistance value: 1.3 kOhms
• Tolerance: ±5%
• Composition: Metal Oxide Film

Mechanical Parameters (Must Match):

• Package type: Axial through-hole
• Number of terminations: 2

Compliance Parameters (Must Match):

• RoHS3 Compliant
• REACH Unaffected or Vendor Undefined

Allowable Variations:

• Power rating: Equal or greater than 1W
• Operating temperature range: Equal or greater coverage within -55°C to 235°C
• Packaging format: Bulk, Cut Tape, or Tape & Reel
• Temperature coefficient: Not a limiting factor for substitution

Three substitute parts meet these criteria with variations in power rating, packaging, and thermal characteristics.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are active products with ROHS3 compliance. Selection between substitutes depends on application-specific requirements:

ROX2SJ1K3 (TE Connectivity): Provides 2W power rating with pulse withstanding capability. Operating temperature maximum of 200°C is 35°C lower than the main part. Suitable for applications requiring higher power dissipation but operating within -55°C to 200°C range. REACH status is vendor-undefined.

RSF1JT1K30 (Stackpole Electronics): Maintains 1W power rating matching the main part specification. Identical operating temperature range (-55°C to 235°C) and REACH unaffected status. Flame retardant coating differs from flame-proof specification. Smallest physical dimension variation (0.433" L vs 0.453" L). Direct electrical and thermal equivalent.

RSMF2JT1K30 (Stackpole Electronics): Provides 2W power rating with flame-proof features matching the main part. Identical operating temperature range (-55°C to 235°C) and REACH unaffected status. Tape & Reel packaging format differs from bulk. Suitable for applications requiring higher power margin with full thermal compatibility.

Frequently Asked Questions (FAQ)

Q: Can ROX2SJ1K3 be used as a direct replacement for RSF100JB-73-1K3?

A: ROX2SJ1K3 meets electrical and mechanical substitution criteria with equivalent resistance, tolerance, and axial package type. The 2W power rating provides margin above the 1W requirement. However, the maximum operating temperature of 200°C is 35°C lower than the main part's 235°C rating. Substitution is valid only for applications operating within -55°C to 200°C.

Q: What is the difference between RSF1JT1K30 and RSMF2JT1K30?

A: Both are Stackpole Electronics products with identical electrical specifications (1.3 kOhms, ±5%). RSF1JT1K30 is rated 1W with flame retardant coating and supplied in Cut Tape format. RSMF2JT1K30 is rated 2W with flame-proof features and supplied in Tape & Reel format. Both maintain the full -55°C to 235°C operating range. Selection depends on power requirement and packaging preference.

Q: Are all substitutes REACH compliant?

A: RSF100JB-73-1K3, RSF1JT1K30, and RSMF2JT1K30 are REACH Unaffected. ROX2SJ1K3 has Vendor Undefined REACH status. For applications requiring confirmed REACH compliance, RSF1JT1K30 or RSMF2JT1K30 are preferred.

Q: Can a 2W substitute be used in place of a 1W resistor?

A: Yes. A higher power rating provides additional thermal margin and does not affect circuit function. ROX2SJ1K3 and RSMF2JT1K30 are both 2W rated and electrically equivalent to the 1W main part.

Q: What are the physical dimension differences?

A: RSF100JB-73-1K3 measures 0.177" Dia x 0.453" L. ROX2SJ1K3 measures 0.197" Dia x 0.472" L (slightly larger). RSF1JT1K30 and RSMF2JT1K30 both measure 0.177" Dia x 0.433" L (same diameter, slightly shorter). Verify PCB layout clearance before substitution.