Equivalent & Substitute Parts for 3KP60-B TVS Diode

Part Overview

The 3KP60-B is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This part operates with a 60V reverse standoff voltage and delivers 3kW peak pulse power through a P600 axial package. The 3KP60-B is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage ratings, clamping characteristics, and thermal operating ranges while accommodating different manufacturers and packaging formats.

Substiute Parts

3KP60-B

Littelfuse Inc.In Stock: 11643KP60-B Datasheet

Current PartRFQ

5KP60A-B

Littelfuse Inc.In Stock: 10605KP60A-B Datasheet

DirectRFQ

15KPA60AE3/TR13

Microchip TechnologyIn Stock: 79515KPA60AE3/TR13 Datasheet

MFR RecommendedRFQ

3KP60A-TP

Micro Commercial CoIn Stock: 11273KP60A-TP Datasheet

MFR RecommendedRFQ

5KP60A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 82915KP60A-E3/54 Datasheet

MFR RecommendedRFQ

5KP60A-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 7315KP60A-E3/73 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3KP60-B is determined by the following critical parameters:

Voltage Compatibility: All substitute parts must maintain a 60V reverse standoff voltage (Typ) to ensure proper circuit protection thresholds. Breakdown voltage (Min) and clamping voltage (Max) @ Ipp must fall within acceptable ranges to prevent under-clamping or over-clamping conditions.

Current and Power Rating: Substitute parts must support the peak pulse current and power dissipation requirements of the application. Parts with equal or higher current ratings (≥31A) and power ratings (≥3000W) are acceptable.

Thermal Operating Range: All substitutes must support the full -55°C to 175°C (TJ) operating temperature range.

Package and Mounting: Substitute parts must use compatible through-hole axial packages (P600 or equivalent R-6 format) to ensure mechanical fit and electrical connection compatibility.

Electrical Type: All substitutes must be unidirectional Zener TVS diodes with a single channel configuration.

Compliance: RoHS3 compliance is required for all substitutes.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Performance): The 3KP60A-TP from Micro Commercial Co provides equivalent electrical specifications with 31A peak pulse current and 3000W power rating, matching the 3KP60-B exactly. This part uses an R-6 axial package, which is mechanically compatible with P600 footprints in through-hole applications. The 3KP60A-TP is active and suitable for new designs.

Higher Power Capability Substitutes: The 5KP60A-B (Littelfuse), 5KP60A-E3/54 (Vishay), and 5KP60A-E3/73 (Vishay) offer increased peak pulse current (51.7–52.7A) and 5000W power rating while maintaining the 60V standoff voltage and compatible P600 packages. These parts provide enhanced transient protection margin and are recommended when higher surge current capacity is beneficial.

Maximum Protection Substitute: The 15KPA60AE3/TR13 from Microchip Technology delivers 155A peak pulse current and 15000W power rating, providing the highest transient suppression capability. This part maintains 60V standoff voltage and P600 package compatibility. Selection of this part is appropriate for applications requiring maximum transient energy absorption.

Compliance and Availability: All recommended substitutes are RoHS3 compliant and active products with confirmed inventory availability. The 5KP60A-E3/54 offers the highest inventory level (8200 pcs), supporting high-volume production requirements.

Frequently Asked Questions (FAQ)

Q: Can the 3KP60-B be directly replaced with any of the substitute parts?

A: Yes, all listed substitute parts maintain the critical 60V reverse standoff voltage and -55°C to 175°C operating temperature range required for functional compatibility. The 3KP60A-TP provides identical electrical performance. Higher-rated parts (5KP and 15KPA series) offer enhanced protection capability while remaining electrically compatible.

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

A: Both P600 and R-6 are axial through-hole packages formats for TVS diodes. The 3KP60A-TP uses R-6 packaging, which is mechanically compatible with P600 footprints. Both packages support identical lead spacing and mounting procedures.

Q: Why do some substitutes have higher current ratings than the 3KP60-B?

A: The 5KP and 15KPA series are designed for higher transient energy absorption. Higher current ratings (52.7A and 155A respectively) allow these parts to suppress larger transient events while maintaining the same 60V protection threshold. These parts are backward-compatible with applications designed for the 3KP60-B.

Q: Are all substitute parts RoHS3 compliant?

A: Five of the six substitute parts explicitly state RoHS3 compliance. The 3KP60A-TP does not specify RoHS status in the provided data. Verify RoHS compliance with the manufacturer if regulatory certification is required for your application.

Q: What packaging formats are available for these substitutes?

A: The 5KP60A-E3/54 is supplied in Cut Tape (CT) format. The 5KP60A-B and 3KP60A-TP are supplied in Bulk format. The 15KPA60AE3/TR13 is supplied in Tape & Reel (TR) format. Select packaging based on production volume and assembly requirements.

Q: Can I use the 15KPA60AE3/TR13 in place of the 3KP60-B?

A: Yes. The 15KPA60AE3/TR13 maintains the 60V standoff voltage and P600 package compatibility. The significantly higher current rating (155A vs. 31A) and power rating (15000W vs. 3000W) provide enhanced transient suppression without affecting circuit operation. This substitution is appropriate when maximum protection margin is desired.