45JR75E Equivalent & Substitute Parts

Part Overview

The 45JR75E is a 750 mOhms ±5% 5W through-hole resistor manufactured by Ohmite in the Ohmicone® 40 series. This axial wirewound resistor is designed for applications requiring precision power dissipation in compact form factors. The part is currently active in production with full RoHS compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

45JR75E

OhmiteIn Stock: 109545JR75E Datasheet

Current PartRFQ

ALSR05R7500JE12

Vishay DaleIn Stock: 729ALSR05R7500JE12 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 45JR75E is determined by strict equivalence across the following critical parameters:

• Resistance value: 750 mOhms
• Tolerance: ±5%
• Power rating: 5W
• Composition: Wirewound
• Package configuration: Axial through-hole
• Temperature coefficient: ±90ppm/°C
• Termination count: 2

The ALSR05R7500JE12 manufactured by Vishay Dale meets all primary electrical and mechanical substitution criteria. Both parts share identical resistance, tolerance, power rating, composition, and package type. Both maintain the same temperature coefficient specification and two-terminal configuration required for direct circuit substitution.

Parameter Comparison

Engineering Selection Recommendations

Both the 45JR75E and ALSR05R7500JE12 are active production parts with full RoHS compliance. The ALSR05R7500JE12 carries ROHS3 certification, indicating compliance with the most current RoHS directive requirements. Both parts maintain unlimited moisture sensitivity ratings suitable for standard industrial and commercial applications.

The primary consideration for selection is physical form factor. The ALSR05R7500JE12 has slightly reduced dimensions (0.312" diameter vs. 0.343", and 0.875" length vs. 0.937"), which may provide advantages in space-constrained layouts. The 45JR75E supports a marginally higher maximum operating temperature (275°C vs. 250°C), which may be relevant for high-temperature applications.

Both parts are electrically and mechanically interchangeable for standard circuit applications where the specified resistance, tolerance, power rating, and axial package configuration are required.

Frequently Asked Questions (FAQ)

Q: Can the ALSR05R7500JE12 be used as a direct replacement for the 45JR75E in existing designs?

A: Yes. Both parts share identical electrical specifications: 750 mOhms resistance, ±5% tolerance, 5W power rating, ±90ppm/°C temperature coefficient, and axial through-hole package configuration. Physical dimensions differ slightly, but both are standard axial form factors suitable for through-hole PCB mounting.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer (Ohmite vs. Vishay Dale), series designation (Ohmicone® 40 vs. ALSR), physical dimensions (45JR75E is slightly larger), maximum operating temperature (45JR75E: 275°C vs. ALSR05R7500JE12: 250°C), and RoHS certification level (RoHS Compliant vs. ROHS3 Compliant). Electrical performance is identical.

Q: Are there any packaging or inventory considerations?

A: The 45JR75E is supplied in box packaging with 1067 pieces in stock. The ALSR05R7500JE12 is supplied in bulk packaging with 638 pieces in stock. Packaging format may affect handling and storage procedures but does not impact electrical or mechanical performance.

Q: Which part should be selected for high-temperature applications?

A: The 45JR75E supports operation up to 275°C, compared to 250°C for the ALSR05R7500JE12. For applications requiring maximum temperature margin, the 45JR75E is the appropriate selection.

Q: Are both parts RoHS compliant?

A: Yes. The 45JR75E is RoHS Compliant. The ALSR05R7500JE12 is ROHS3 Compliant, indicating compliance with the current RoHS directive. Both parts meet RoHS requirements for restricted substance elimination.