KAL50JB1K00 Equivalent & Substitute Parts

Part Overview

The KAL50JB1K00 is a 1 kOhms ±5% 50W wirewound chassis mount resistor manufactured by Stackpole Electronics Inc. This component is designed for high-power applications requiring stable resistance performance across extended temperature ranges. The part is currently in active production status with 1043 units available in inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this product category.

Substiute Parts

KAL50JB1K00

Stackpole Electronics IncIn Stock: 1080KAL50JB1K00 Datasheet

Current PartRFQ

KAL50FB1K00

Stackpole Electronics IncIn Stock: 1159KAL50FB1K00 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KAL50JB1K00 is determined by strict equivalence across the following critical parameters:

• Resistance value: 1 kOhms (exact match required)
• Power rating: 50W (exact match required)
• Composition: Wirewound (exact match required)
• Temperature coefficient: ±20ppm/°C (exact match required)
• Operating temperature range: -55°C to 275°C (exact match required)
• Housing type: Aluminum (exact match required)
• Mounting feature: Flanges (exact match required)
• Lead style: Solder Lugs (exact match required)
• Package type: Axial, Box (exact match required)

The KAL50FB1K00 qualifies as a parametric equivalent because it maintains all critical electrical and mechanical specifications. The tolerance specification differs (±1% versus ±5%), which represents an improvement in precision and does not restrict substitution in applications where the original tolerance is acceptable.

Parameter Comparison

Engineering Selection Recommendations

Both the KAL50JB1K00 and KAL50FB1K00 are active production components from Stackpole Electronics Inc with full ROHS3 compliance and REACH unaffected status. Selection between these parts depends on application-specific tolerance requirements. The KAL50FB1K00 provides tighter tolerance specification (±1%) compared to the KAL50JB1K00 (±5%), making it suitable for applications requiring higher precision. Both components share identical mechanical dimensions, mounting interfaces, and thermal operating ranges, ensuring direct substitution compatibility in chassis mount applications.

Frequently Asked Questions (FAQ)

Q: Can the KAL50FB1K00 replace the KAL50JB1K00 in existing designs?

A: Yes. The KAL50FB1K00 maintains all critical electrical and mechanical parameters required for direct substitution. The improved tolerance specification (±1% versus ±5%) does not restrict compatibility.

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

A: The primary difference is tolerance specification. The KAL50JB1K00 is specified at ±5%, while the KAL50FB1K00 is specified at ±1%. All other parameters, including resistance value, power rating, temperature coefficient, operating temperature range, housing type, mounting features, and physical dimensions, are identical.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 1.968" L x 1.140" W (49.99mm x 28.96mm) with a maximum seated height of 0.641" (16.28mm). They use identical flanged mounting features and solder lug lead styles.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the KAL50JB1K00 and KAL50FB1K00 are ROHS3 compliant and REACH unaffected, with identical regulatory status.

Q: What is the operating temperature range for these resistors?

A: Both parts operate across the range of -55°C to 275°C with a temperature coefficient of ±20ppm/°C.