Equivalent & Substitute Parts for 3KP13CA-B TVS Diode

Part Overview

The 3KP13CA-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage protection applications. This bidirectional Zener diode features a 13V reverse standoff voltage and 21.5V maximum clamping voltage with 139.5A peak pulse current capability. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

3KP13CA-B

Littelfuse Inc.In Stock: 10603KP13CA-B Datasheet

Current PartRFQ

5KP13CA-B

Littelfuse Inc.In Stock: 7565KP13CA-B Datasheet

DirectRFQ

3KP13CA-TP

Micro Commercial CoIn Stock: 10393KP13CA-TP Datasheet

MFR RecommendedRFQ

5KP13CAE3/TR13

Microchip TechnologyIn Stock: 10835KP13CAE3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3KP13CA-B are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Reverse standoff voltage: 13V
• Breakdown voltage minimum: 14.4V
• Clamping voltage maximum: 21.5V
• Operating temperature range: -55°C to 175°C
• Bidirectional channels: 1
• Type: Zener
• Mounting: Through Hole
• Applications: General Purpose

Acceptable Variation Parameters:

• Peak pulse current: May exceed 139.5A (higher current rating provides equivalent or superior protection)
• Peak pulse power: May exceed 3000W (higher power rating provides equivalent or superior protection)
• Package case designation: P600 or R-6 axial packages are mechanically compatible
• Packaging format: Bulk or Tape & Reel formats are functionally equivalent
• Manufacturer: Different manufacturers acceptable if electrical specifications match

Parameter Comparison

Engineering Selection Recommendations

5KP13CA-B (Littelfuse Inc.) is the primary substitute. This part maintains identical voltage specifications and operating temperature range while providing increased peak pulse current (237.2A) and power rating (5000W). Active product status ensures long-term availability. ROHS3 compliance matches the original specification.

3KP13CA-TP (Micro Commercial Co) provides electrical equivalence with matching peak pulse current and power ratings. Active product status supports procurement continuity. Package designation R-6 is mechanically compatible with P600 axial through-hole mounting. Compliance certifications are not specified in available data.

5KP13CAE3/TR13 (Microchip Technology) offers electrical equivalence with increased peak pulse current (233A) and power rating (5000W). Supplied in Tape & Reel format for automated assembly applications. Active product status and ROHS3 compliance are confirmed. P600 package maintains mechanical compatibility.

All substitute parts satisfy the critical electrical parameters (13V standoff, 14.4V breakdown, 21.5V clamping) and operating temperature requirements of the original 3KP13CA-B.

Frequently Asked Questions (FAQ)

Q: Can 5KP13CA-B replace 3KP13CA-B in existing designs? A: Yes. The 5KP13CA-B maintains all critical voltage specifications and operating temperature range. The higher peak pulse current (237.2A vs. 139.5A) and power rating (5000W vs. 3000W) provide equivalent or superior transient protection. P600 axial package dimensions are identical.

Q: What is the difference between 3KP13CA-TP and 3KP13CA-B? A: Both parts have identical electrical specifications (13V standoff, 21.5V clamping, 139.5A peak current, 3000W power). The primary difference is the package case designation: 3KP13CA-TP uses R-6 while 3KP13CA-B uses P600. Both are axial through-hole packages with compatible mechanical footprints.

Q: Why do some substitutes have higher peak pulse ratings? A: The 5KP series (5KP13CA-B and 5KP13CAE3/TR13) are designed for higher transient energy absorption. Higher current and power ratings do not affect voltage regulation characteristics and provide additional margin for transient protection without changing circuit behavior.

Q: Is Tape & Reel packaging compatible with bulk packaging? A: Yes, functionally equivalent. Tape & Reel (5KP13CAE3/TR13) and Bulk (5KP13CA-B) formats contain identical components. Selection depends on assembly process requirements: Tape & Reel suits automated pick-and-place equipment, while Bulk suits manual or semi-automated assembly.

Q: Are all substitutes ROHS3 compliant? A: 5KP13CA-B and 5KP13CAE3/TR13 are confirmed ROHS3 compliant. Compliance status for 3KP13CA-TP is not specified in available documentation.

Q: Can these parts be used interchangeably on the same PCB? A: Yes, all substitute parts are pin-compatible through-hole components with identical electrical function. Mechanical footprint compatibility is confirmed for P600 and R-6 axial packages.