3KP13C-B Equivalent & Substitute Parts

Part Overview

The 3KP13C-B is a Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 13V reverse standoff voltage with a 22.58V maximum clamping voltage and 139.5A peak pulse current capability in a through-hole P600 axial package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

3KP13C-B

Littelfuse Inc.In Stock: 7923KP13C-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

5KP13CE3/TR13

Microchip TechnologyIn Stock: 8025KP13CE3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3KP13C-B are qualified based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): Must be 13V to maintain identical circuit protection thresholds
• Voltage - Clamping (Max) @ Ipp: Must remain within the 21.5V to 23.8V range to ensure compatible transient suppression characteristics
• Current - Peak Pulse (10/1000µs): Must support minimum 139.5A to handle equivalent surge conditions
• Power - Peak Pulse: Must support minimum 3000W dissipation capability
• Operating Temperature Range: Must span -55°C to 175°C (TJ) for thermal compatibility
• Mounting Type & Package: Through-hole P600 or R-6 axial packages are acceptable for board-level compatibility
• Bidirectional Channels: Must be 1 channel for single-line protection applications
• Type: Zener diode technology for consistent suppression behavior

Parameter Comparison

Engineering Selection Recommendations

5KP13CA-B (Littelfuse Inc.) is the primary direct substitute. This part maintains identical reverse standoff voltage (13V), operates within the acceptable clamping voltage range (21.5V), and exceeds the minimum peak pulse current requirement (237.2A vs. 139.5A). The 5000W power rating provides enhanced surge handling capability. Product status is active with ROHS3 compliance confirmed. Package compatibility is maintained with P600 axial configuration.

3KP13CA-TP (Micro Commercial Co) serves as an alternative substitute with identical electrical performance to the original 3KP13C-B. Peak pulse current and power dissipation match exactly (139.5A, 3000W). Clamping voltage is 21.5V, within acceptable range. The R-6 axial package differs from the original P600 but maintains through-hole mounting compatibility. Product status is active. REACH compliance is confirmed; RoHS status is not specified in available data.

5KP13CE3/TR13 (Microchip Technology) qualifies as a substitute with enhanced performance characteristics. Reverse standoff voltage matches at 13V. Clamping voltage is 23.8V, slightly elevated but within acceptable suppression parameters. Peak pulse current of 210A and 5000W power rating exceed minimum requirements. Product status is active with ROHS3 and REACH compliance confirmed. Package is P600 axial, matching the original. Tape & Reel packaging indicates suitability for automated assembly environments.

Frequently Asked Questions (FAQ)

Q: Can the 5KP13CA-B replace the 3KP13C-B in existing designs?

A: Yes. Both parts maintain the critical 13V reverse standoff voltage. The 5KP13CA-B provides superior peak pulse current (237.2A vs. 139.5A) and power dissipation (5000W vs. 3000W), making it suitable for direct substitution. The slightly lower clamping voltage (21.5V vs. 22.58V) remains within acceptable transient suppression parameters for general-purpose applications.

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

A: Both are through-hole axial packages for TVS diodes. P600 and R-6 differ in physical dimensions and lead spacing. The 3KP13CA-TP uses R-6 packaging. Verify PCB footprint compatibility before substitution, as lead pitch may differ between package types.

Q: Why does the 5KP13CE3/TR13 have a higher clamping voltage (23.8V) than the original?

A: The 5KP13CE3/TR13 is specified with a maximum clamping voltage of 23.8V, compared to the original 22.58V. This represents a 1.22V increase. For general-purpose protection applications, this variation remains within acceptable design margins. Verify circuit-specific voltage tolerance requirements before selection.

Q: Are all substitute parts RoHS compliant?

A: The 5KP13CA-B and 5KP13CE3/TR13 are confirmed ROHS3 compliant. The 3KP13CA-TP RoHS status is not specified in available documentation. Confirm compliance requirements with your procurement or quality assurance department before final selection.

Q: Can I use the higher power-rated substitutes (5KP series) in place of the 3KP13C-B?

A: Yes. The 5KP13CA-B and 5KP13CE3/TR13 provide enhanced power dissipation (5000W vs. 3000W) and higher peak pulse current ratings. These characteristics make them suitable for applications requiring equal or greater surge protection capability. No circuit modifications are required for direct substitution.

Q: What is the inventory status of these substitute parts?

A: All substitute parts are confirmed in stock: 5KP13CA-B (742 pcs), 3KP13CA-TP (961 pcs), and 5KP13CE3/TR13 (762 pcs). Availability supports immediate procurement for design transitions or system repairs.