5KP160-B Equivalent & Substitute Parts

Part Overview

The 5KP160-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 160V reverse standoff voltage rating and 5000W peak pulse power handling capability in a through-hole P600 axial package. The 5KP160-B is currently listed as obsolete, making identification of functionally equivalent active alternatives essential for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	160V
Voltage - Breakdown (Min)	168.75V
Voltage - Clamping (Max) @ Ipp	271.95V
Power - Peak Pulse	5000W (5kW)
Operating Temperature Range	-55°C ~ 175°C (TJ)
Package / Case	P600, Axial
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 5KP160-B is determined by the following critical parameters: reverse standoff voltage (160V), package type (P600 axial through-hole), operating temperature range (-55°C to 175°C), and power rating (5000W or higher). All substitute parts listed maintain these core electrical and mechanical specifications, ensuring functional compatibility in existing circuit designs.

The substitute parts are grouped into two categories:

Category 1: Direct Littelfuse Equivalents (5kW Power Rating)

5KP160A (Cut Tape packaging)
5KP160A-B (Bulk packaging)
5KP160A-E3/54 (Vishay TransZorb®, Cut Tape)
5KP160A-E3/73 (Vishay TransZorb®)

Category 2: Enhanced Performance Alternative (15kW Power Rating)

15KPA160AE3/TR13 (Microchip Technology, Tape & Reel)

All substitute parts are ROHS3 compliant and operate within the specified temperature range.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package	Status
5KP160-B	Littelfuse Inc.	160V	168.75V	271.95V	-	5000W	P600, Axial	Obsolete
5KP160A	Littelfuse Inc.	160V	178V	259V	19.7A	5000W	P600, Axial	Active
5KP160A-B	Littelfuse Inc.	160V	178V	259V	19.7A	5000W	P600, Axial	Active
5KP160A-E3/54	Vishay General Semiconductor	160V	178V	259V	19.3A	5000W	P600, Axial	Active
5KP160A-E3/73	Vishay General Semiconductor	160V	178V	259V	19.3A	5000W	P600, Axial	Active
15KPA160AE3/TR13	Microchip Technology	160V	178.7V	258.6V	58.4A	15000W	P600, Axial	Active

Engineering Selection Recommendations

For applications requiring direct replacement of the obsolete 5KP160-B with identical electrical and power specifications, the 5KP160A and 5KP160A-B from Littelfuse Inc. are the primary alternatives. Both maintain the 160V standoff voltage, 5000W power rating, and P600 axial package configuration. The 5KP160A is available in Cut Tape packaging, while 5KP160A-B is supplied in Bulk packaging.

The Vishay TransZorb® series parts (5KP160A-E3/54 and 5KP160A-E3/73) provide equivalent electrical performance with the same 5000W power rating and package type, offering design flexibility across multiple qualified suppliers.

For applications where enhanced transient protection is required, the 15KPA160AE3/TR13 from Microchip Technology provides a 15kW power rating while maintaining the 160V standoff voltage and P600 axial package. This part is suitable for higher-energy transient environments.

All substitute parts are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1), matching the compliance profile of the original component.

Frequently Asked Questions (FAQ)

Q: Can I use 5KP160A as a direct replacement for 5KP160-B? A: Yes. Both parts share identical reverse standoff voltage (160V), clamping voltage characteristics, operating temperature range (-55°C to 175°C), and 5000W power rating. The primary difference is packaging format (Cut Tape vs. original specification). The P600 axial through-hole package is identical.

Q: What is the difference between 5KP160A and 5KP160A-B? A: These parts are electrically identical. The difference is packaging: 5KP160A is supplied in Cut Tape (CT) format, while 5KP160A-B is supplied in Bulk format. Both are active products from Littelfuse Inc.

Q: Are Vishay TransZorb® parts (5KP160A-E3/54, 5KP160A-E3/73) compatible? A: Yes. These parts maintain the 160V standoff voltage, 259V clamping voltage, 5000W power rating, and P600 axial package. Peak pulse current is 19.3A compared to 19.7A in the Littelfuse 5KP160A, representing a negligible difference within normal circuit tolerance.

Q: When should I use the 15KPA160AE3/TR13 instead of the 5kW alternatives? A: The 15KPA160AE3/TR13 is specified for applications requiring higher transient energy absorption. Its 15kW power rating (versus 5kW) provides enhanced protection margin in high-energy surge environments while maintaining the same 160V standoff voltage and P600 package.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the environmental compliance of the original 5KP160-B.

Q: What is the difference in clamping voltage between the main part and substitutes? A: The 5KP160-B specifies 271.95V maximum clamping voltage, while active substitutes specify 258.6V to 259V. This represents a tighter clamping characteristic in the substitute parts, providing improved transient suppression performance.

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