Equivalent & Substitute Parts for 5KP18CA-B

Part Overview

The 5KP18CA-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage clamping applications. This bidirectional Zener diode operates with an 18V reverse standoff voltage and provides 5000W peak pulse power dissipation through a P600 axial package. The component is ROHS3 compliant and maintains active product status. Substitute parts are identified to address packaging format availability, inventory requirements, and equivalent electrical performance within specified parameter tolerances.

Substiute Parts

5KP18CA-B

Littelfuse Inc.In Stock: 7835KP18CA-B Datasheet

Current PartRFQ

5KP18CA

Diotec SemiconductorIn Stock: 61755KP18CA Datasheet

MFR RecommendedRFQ

15KP18CA-TP

Micro Commercial CoIn Stock: 129215KP18CA-TP Datasheet

MFR RecommendedRFQ

5KP18CA-TP

Micro Commercial CoIn Stock: 16475KP18CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP18CA-B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 18V
• Voltage - Breakdown (Min): 20V
• Power - Peak Pulse: 5000W (5kW)
• Type: Zener, Bidirectional
• Mounting Type: Through Hole
• RoHS Status: ROHS3 Compliant

Substitute parts must maintain identical reverse standoff voltage, breakdown voltage minimum, and peak pulse power rating. Variations in clamping voltage within the specified range, peak pulse current, package format (P600 vs. R-6), and packaging type (Bulk vs. Tape & Reel vs. Cut Tape) are permitted. Operating temperature range may vary within the specified limits. The 15KP18CA-TP is included as a substitute despite higher power rating (15000W) because it meets all critical electrical parameters and maintains compatibility with the application requirements.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active product status and ROHS3 compliance, meeting regulatory requirements equivalent to the 5KP18CA-B. The 5KP18CA from Diotec Semiconductor provides direct electrical equivalence with identical clamping voltage and power rating, differing only in packaging format (Tape & Reel) and operating temperature lower limit (-50°C vs. -55°C). This substitute is suitable for applications where the -50°C minimum temperature is acceptable.

The 5KP18CA-TP from Micro Commercial Co maintains identical electrical specifications with P600 equivalent performance in R-6 package format and Cut Tape packaging. This substitute accommodates applications requiring tape packaging or R-6 package compatibility.

The 15KP18CA-TP from Micro Commercial Co provides higher peak pulse power (15000W) while maintaining all critical voltage parameters. This substitute is applicable where enhanced power dissipation capability is beneficial or required, with no derating necessary for the 5KP18CA-B application envelope.

Frequently Asked Questions (FAQ)

Q: Can the 5KP18CA from Diotec Semiconductor replace the 5KP18CA-B in all applications?

A: The Diotec part is electrically equivalent with identical clamping voltage (29.2V) and power rating (5000W). The operating temperature lower limit is -50°C instead of -55°C. Substitution is valid for applications where minimum operating temperature does not fall below -50°C.

Q: What is the difference between P600 and R-6 package formats?

A: Both are axial through-hole packages for TVS diodes. P600 and R-6 represent different physical dimensions and lead configurations. Mechanical compatibility with PCB footprints must be verified before substitution.

Q: Why is the 15KP18CA-TP listed as a substitute if it has higher power rating?

A: The 15KP18CA-TP maintains all critical electrical parameters (18V reverse standoff, 20V breakdown minimum, identical clamping voltage range). Higher power rating does not compromise compatibility; it provides additional margin for transient suppression. The part is suitable for the 5KP18CA-B application.

Q: Are there differences in REACH compliance between substitute parts?

A: The 5KP18CA-B and 5KP18CA-TP are REACH Unaffected. The 5KP18CA from Diotec lists REACH info available upon request. Verify REACH documentation with the supplier if required for your application.

Q: Does packaging type (Bulk vs. Tape & Reel vs. Cut Tape) affect electrical performance?

A: Packaging type does not affect electrical performance. It determines handling, storage, and assembly process compatibility. Select based on manufacturing requirements and inventory management practices.