ES1W1R5J Equivalent & Substitute Parts

Part Overview

The ES1W1R5J is a 1.5 Ohms ±5% 1W through-hole resistor manufactured by TE Connectivity Passive Product. This axial wirewound resistor features flame-proof and safety certifications, with a temperature coefficient of ±300ppm/°C. The part is classified as obsolete, necessitating identification of active equivalent components that maintain electrical and mechanical compatibility for ongoing applications and new designs.

Substiute Parts

ES1W1R5J

TE Connectivity Passive ProductIn Stock: 975ES1W1R5J Datasheet

Current PartRFQ

RSF100JB-73-1R5

YAGEOIn Stock: 12075RSF100JB-73-1R5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ES1W1R5J is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 1.5 Ohms
• Tolerance: ±5%
• Power rating: 1W

Mechanical Parameters:

• Package configuration: Axial through-hole
• Number of terminations: 2
• Physical form factor: Axial lead resistor

Compliance Parameters:

• RoHS3 compliance
• Flame-proof and safety features

The substitute part RSF100JB-73-1R5 meets all core electrical and mechanical requirements. While composition differs (metal oxide film versus wirewound), both technologies deliver the specified resistance, tolerance, and power handling within the axial package format. Physical dimensions vary slightly but remain compatible with standard through-hole PCB layouts designed for axial resistors.

Parameter Comparison

Engineering Selection Recommendations

The RSF100JB-73-1R5 serves as a direct functional substitute for the obsolete ES1W1R5J. Both components satisfy the core electrical specifications: 1.5 Ohms resistance at ±5% tolerance with 1W power dissipation capability. Both maintain axial through-hole package compatibility and carry ROHS3 compliance certification.

The RSF100JB-73-1R5 is currently in active production status with substantial inventory availability (12,030 pieces), whereas the ES1W1R5J is obsolete. Selection of the YAGEO substitute ensures long-term component availability and supply chain continuity.

Physical dimensions differ marginally. The RSF100JB-73-1R5 measures 0.177" diameter by 0.453" length compared to the ES1W1R5J at 0.157" diameter by 0.354" length. These dimensional variations remain within acceptable tolerances for standard axial resistor PCB footprints and do not preclude direct substitution in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the RSF100JB-73-1R5 replace the ES1W1R5J in existing designs?

A: Yes. Both components deliver identical electrical performance: 1.5 Ohms at ±5% tolerance with 1W power rating. Both employ axial through-hole packaging with two terminations and maintain ROHS3 compliance. Physical dimensions vary slightly but remain compatible with standard axial resistor PCB layouts.

Q: What is the primary difference between these two parts?

A: The ES1W1R5J uses wirewound composition while the RSF100JB-73-1R5 employs metal oxide film technology. Both technologies achieve the specified resistance and power handling. The wirewound design offers lower temperature coefficient (±300ppm/°C for ES1W1R5J), while the metal oxide film design provides a defined operating temperature range (-55°C ~ 235°C for RSF100JB-73-1R5).

Q: Are there any compatibility concerns with PCB mounting?

A: The RSF100JB-73-1R5 is slightly larger in diameter and length than the ES1W1R5J. Standard axial resistor footprints accommodate this variation. Verify PCB layout clearances if space constraints exist in the original design.

Q: Why is the ES1W1R5J classified as obsolete?

A: The ES1W1R5J is no longer in active production. The RSF100JB-73-1R5 provides equivalent electrical and mechanical performance with active manufacturing status and reliable supply availability.

Q: Do both parts carry the same safety and compliance certifications?

A: Yes. Both the ES1W1R5J and RSF100JB-73-1R5 are ROHS3 compliant and feature flame-proof and safety certifications. Both carry EAR99 ECCN classification.