KAL5JB100R Equivalent & Substitute Parts

Part Overview

The KAL5JB100R is a 100 Ohms ±5% 7.5W wirewound chassis mount resistor manufactured by Stackpole Electronics Inc. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part features aluminum housing with flanged mounting, solder lug termination, and moisture-resistant coating suitable for applications requiring reliable power dissipation in the 7.5W range.

Substiute Parts

KAL5JB100R

Stackpole Electronics IncIn Stock: 1173KAL5JB100R Datasheet

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TMC005100R0FE02

Vishay DaleIn Stock: 1124TMC005100R0FE02 Datasheet

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UAL5-100RF8

RiedonIn Stock: 700UAL5-100RF8 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the KAL5JB100R is determined by the following electrical and mechanical parameters:

• Resistance value: 100 Ohms (exact match required)
• Power rating: 7.5W (exact match required)
• Composition: Wirewound (required for thermal and electrical characteristics)
• Temperature coefficient: ±20ppm/°C (exact match required)
• Housing type: Aluminum with flanged mounting (mechanical compatibility)
• Lead style: Solder lugs (connection compatibility)
• Operating temperature range: Must support -55°C minimum and 275°C maximum
• RoHS compliance: ROHS3 Compliant (regulatory requirement)

The substitute parts TMC005100R0FE02 and UAL5-100RF8 meet all critical electrical parameters. Both are active products with improved tolerance specifications (±1% versus ±5%), providing enhanced precision while maintaining full backward compatibility with the obsolete KAL5JB100R in applications where the original tolerance was acceptable.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with full ROHS3 compliance, ensuring long-term availability and regulatory alignment. The TMC005100R0FE02 from Vishay Dale operates within -55°C to 250°C, which is suitable for applications not requiring the full 275°C upper temperature limit of the original KAL5JB100R. The UAL5-100RF8 from Riedon maintains the complete -55°C to 275°C operating range, providing direct thermal envelope compatibility with the obsolete part.

Both substitutes feature ±1% tolerance, representing an improvement over the original ±5% specification. This enhanced precision is backward compatible with designs originally specified for ±5% tolerance. Physical dimensions remain consistent across all three parts, with solder lug termination and flanged aluminum housing ensuring mechanical interchangeability in existing PCB layouts and chassis mount applications.

Frequently Asked Questions (FAQ)

Q: Can TMC005100R0FE02 and UAL5-100RF8 be used interchangeably with KAL5JB100R?

A: Both parts are electrically and mechanically compatible substitutes. The primary difference is the operating temperature range: TMC005100R0FE02 supports -55°C to 250°C, while UAL5-100RF8 supports -55°C to 275°C. Selection depends on application temperature requirements.

Q: What is the significance of the improved ±1% tolerance in the substitute parts?

A: The substitute parts offer tighter tolerance than the original ±5% specification. This provides enhanced precision and is fully backward compatible with designs originally specified for ±5% tolerance. No circuit redesign is required.

Q: Are the physical dimensions identical across all three parts?

A: Dimensions are consistent within manufacturing tolerances. The KAL5JB100R measures 0.591" L x 0.650" W (15.00mm x 16.50mm), while substitutes measure approximately 0.598-0.600" L x 0.646" W (15.20-15.24mm x 16.40-16.41mm). These minor variations do not affect mechanical interchangeability in standard chassis mount applications.

Q: Do all parts meet current regulatory requirements?

A: Yes. All three parts are ROHS3 compliant. The KAL5JB100R is obsolete but compliant; both substitute parts are active products with current regulatory certification.

Q: Which substitute should be selected for maximum temperature compatibility?

A: The UAL5-100RF8 maintains the full -55°C to 275°C operating range of the original KAL5JB100R. Select this part for applications requiring the complete thermal envelope.