5KP90 Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 5KP90 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 90V reverse standoff voltage rating and 5000W peak pulse power handling capability in a through-hole P600 axial package. The 5KP90 is classified as obsolete, necessitating identification of active equivalent and substitute parts that maintain functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	90	V
Voltage - Breakdown (Min)	94.95	V
Voltage - Clamping (Max) @ Ipp	153.3	V
Power - Peak Pulse	5000	W
Type	Zener	-
Unidirectional Channels	1	-
Mounting Type	Through Hole	-
Package / Case	P600, Axial	-
Operating Temperature	-55 to 175	°C (TJ)
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the 5KP90 is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): Must equal 90V to maintain circuit protection threshold
Voltage - Clamping (Max) @ Ipp: Must not exceed the original specification to prevent overvoltage stress on protected circuits
Power - Peak Pulse: Must meet or exceed 5000W to handle transient energy
Type: Must remain Zener unidirectional TVS diode
Unidirectional Channels: Must equal 1
Mounting Type & Package: Through-hole axial configuration required for board compatibility
Operating Temperature Range: Must support -55°C to 175°C (TJ)
RoHS Compliance: Must maintain ROHS3 compliance status

Substitute parts are grouped into two categories: direct equivalents (same manufacturer, active status) and manufacturer-recommended alternatives (different manufacturers, enhanced specifications).

Parameter Comparison

Parameter	5KP90 (Main)	5KP90A	15KP90A-TP	5KP90E3/TR13
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Micro Commercial Co	Microchip Technology
Product Status	Obsolete	Active	Active	Active
Voltage - Reverse Standoff (Typ)	90V	90V	90V	90V
Voltage - Breakdown (Min)	94.95V	100V	100V	100V
Voltage - Clamping (Max) @ Ipp	153.3V	146V	146V	160V
Current - Peak Pulse (10/1000µs)	-	34.9A	-	31.3A
Power - Peak Pulse	5000W	5000W	15000W	5000W
Type	Zener	Zener	Zener	Zener
Unidirectional Channels	1	1	1	1
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	P600, Axial	P600, Axial	R-6, Axial	P600, Axial
Operating Temperature	-55 to 175°C (TJ)	-55 to 175°C (TJ)	-55 to 175°C (TJ)	-55 to 175°C (TJ)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	-	Cut Tape (CT)	Cut Tape (CT)	Tape & Reel (TR)

Engineering Selection Recommendations

5KP90A (Littelfuse Inc.) is the primary direct equivalent. This part maintains identical voltage ratings, power specifications, and package configuration while offering active product status and ROHS3 compliance. The lower clamping voltage (146V vs. 153.3V) provides improved transient suppression performance. This substitute is suitable for direct replacement in existing designs without circuit modification.

5KP90E3/TR13 (Microchip Technology) is a functionally compatible alternative with active status and ROHS3 compliance. The clamping voltage specification (160V) is within acceptable tolerance for 90V standoff applications. The P600 axial package matches the original mounting configuration. This part is appropriate for new designs or redesigns where Microchip sourcing is preferred.

15KP90A-TP (Micro Commercial Co) offers enhanced power handling (15000W vs. 5000W) with identical voltage ratings and active product status. The R-6 axial package differs from the original P600 package; physical dimensions and board layout compatibility must be verified before selection. This substitute is suitable for applications requiring higher transient energy absorption capacity.

All substitute parts maintain ROHS3 compliance and support the full operating temperature range (-55°C to 175°C TJ) specified for the original component.

Frequently Asked Questions (FAQ)

Q: Can 5KP90A be used as a direct replacement for 5KP90?

A: Yes. The 5KP90A maintains the same 90V reverse standoff voltage, 5000W peak pulse power rating, and P600 axial through-hole package. The active product status and improved clamping voltage (146V) make this the primary equivalent for obsolete 5KP90 applications.

Q: What is the difference between 5KP90A and 5KP90E3/TR13?

A: Both parts share identical 90V standoff voltage and 5000W power ratings. The primary differences are manufacturer (Littelfuse vs. Microchip), clamping voltage (146V vs. 160V), and packaging format (Cut Tape vs. Tape & Reel). Circuit performance is functionally equivalent within specified parameters.

Q: Why does 15KP90A-TP have higher power rating (15000W)?

A: The 15KP90A-TP is designed for higher-energy transient suppression applications. The increased power rating reflects enhanced thermal and electrical design. The R-6 package differs from the original P600 package; physical compatibility with existing PCB layouts must be confirmed.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts (5KP90A, 15KP90A-TP, 5KP90E3/TR13) maintain ROHS3 compliance status, matching the original 5KP90 specification.

Q: Can I use 15KP90A-TP in place of 5KP90 without circuit changes?

A: The electrical parameters (90V standoff, voltage clamping) are compatible. However, the R-6 package differs from the original P600 axial package. Physical board layout and lead spacing must be verified for mechanical compatibility before substitution.

Q: What is the operating temperature range for substitute parts?

A: All substitute parts support the full operating temperature range of -55°C to 175°C (TJ), matching the original 5KP90 specification.

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