5KP210-B Equivalent & Substitute Parts

Part Overview

The 5KP210-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This unidirectional Zener diode features a 210V reverse standoff voltage and 366.98V maximum clamping voltage with 5000W peak pulse power handling capability in a through-hole P600 axial package. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring similar protection characteristics.

Key Parameters

Parameter	5KP210-B
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Unidirectional Channels	1
Voltage - Reverse Standoff (Typ)	210V
Voltage - Breakdown (Min)	220.95V
Voltage - Clamping (Max) @ Ipp	366.98V
Power - Peak Pulse	5000W (5kW)
Operating Temperature	-55°C ~ 175°C (TJ)
Mounting Type	Through Hole
Package / Case	P600, Axial
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the 5KP210-B is determined by the following critical parameters:

Reverse standoff voltage within the 210V specification
Breakdown voltage minimum in the 220-237V range
Clamping voltage performance at rated peak pulse current
Unidirectional Zener diode topology
Through-hole axial mounting configuration
Operating temperature range compatibility (-55°C minimum)
RoHS3 compliance for regulatory alignment

Substitute parts are grouped into two categories based on package type and power dissipation capability:

Category 1: P600 Axial Package (5kW rated) — Direct mechanical and electrical equivalents maintaining the original package footprint and maximum power handling.

Category 2: DO-15/DO-201 Axial Packages (600W-1500W rated) — Alternative packages with reduced power dissipation suitable for applications where peak pulse current requirements are lower than the original 5kW specification.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Operating Temperature	Product Status	RoHS Status
5KP210-B	Littelfuse Inc.	210V	220.95V	366.98V	—	5000W	P600, Axial	-55°C ~ 175°C	Obsolete	ROHS3 Compliant
5KP210A-B	Littelfuse Inc.	210V	233V	349.5V	14.6A	5000W	P600, Axial	-55°C ~ 175°C	Active	ROHS3 Compliant
5KP210A	Littelfuse Inc.	210V	233V	349.5V	14.6A	5000W	P600, Axial	-55°C ~ 175°C	Active	ROHS3 Compliant
1.5KE250A	Taiwan Semiconductor Corporation	214V	237V	344V	4.5A	1500W	DO-201AA, DO-27, Axial	-55°C ~ 175°C	Active	ROHS3 Compliant
1.5KE250A-G	Comchip Technology	214V	237.5V	344V	4.36A	1500W	DO-201AA, DO-27, Axial	-55°C ~ 150°C	Active	ROHS3 Compliant
P6KE250A	Taiwan Semiconductor Corporation	214V	237V	344V	1.8A	600W	DO-204AC, DO-15, Axial	—	Active	ROHS3 Compliant
P6KE250A-AP	Micro Commercial Co	214V	237V	344V	1.8A	600W	DO-204AC, DO-15, Axial	-55°C ~ 175°C	Active	—
P6KE250A-BP	Micro Commercial Co	214V	237V	344V	1.8A	600W	DO-204AC, DO-15, Axial	-55°C ~ 175°C	Active	—
P6KE250A-G	Comchip Technology	214V	237.5V	344V	1.74A	600W	DO-204AC, DO-15, Axial	-55°C ~ 150°C	Active	ROHS3 Compliant
P6KE250A-TP	Micro Commercial Co	214V	237V	344V	1.8A	600W	DO-204AC, DO-15, Axial	-55°C ~ 175°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Same Package, Active Status):

The 5KP210A and 5KP210A-B are direct Littelfuse equivalents in the same P600 axial package with identical 5000W power rating and -55°C to 175°C operating range. Both parts are in active production status with ROHS3 compliance. These are the preferred substitutes for direct board-level replacement without design modification.

Secondary Substitutes (Alternative Packages, Reduced Power Rating):

The 1.5KE250A series (Taiwan Semiconductor Corporation and Comchip Technology variants) and P6KE250A series (Taiwan Semiconductor Corporation and Micro Commercial Co variants) provide functional equivalence with different package geometries and reduced power dissipation ratings. These substitutes are suitable for applications where peak pulse current and power handling requirements are lower than the original 5kW specification. All listed variants maintain active product status and ROHS3 compliance.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance. Operating temperature ranges vary between -55°C to 150°C and -55°C to 175°C; verify application requirements against the selected substitute's maximum junction temperature specification.

Frequently Asked Questions (FAQ)

Q: Can 5KP210A-B directly replace 5KP210-B without PCB modification?

A: Yes. The 5KP210A-B maintains identical P600 axial package geometry, mounting footprint, and lead spacing. No PCB layout changes are required for direct substitution.

Q: What is the difference between 5KP210A and 5KP210A-B?

A: Both parts are electrically identical with the same electrical specifications. The difference is packaging format: 5KP210A is supplied in Tape & Reel (TR), while 5KP210A-B is supplied in Bulk. Select based on procurement and assembly requirements.

Q: Can I use P6KE250A or 1.5KE250A as replacements for 5KP210-B?

A: These parts provide electrical equivalence in reverse standoff voltage and clamping characteristics but use different package types (DO-15 or DO-201 instead of P600) and have reduced power dissipation ratings (600W or 1500W instead of 5000W). Use only if your application's peak pulse current and power requirements are compatible with the lower power rating and if PCB layout can accommodate the different package footprint.

Q: Are all substitute parts RoHS3 compliant?

A: Most listed substitutes are ROHS3 compliant. P6KE250A-AP and P6KE250A-BP do not specify RoHS status in available data. Verify compliance requirements with your procurement or quality department before selection.

Q: What is the operating temperature range difference between substitutes?

A: The 5KP210-B and most Littelfuse/Taiwan Semiconductor parts operate from -55°C to 175°C. Comchip Technology variants (1.5KE250A-G and P6KE250A-G) operate from -55°C to 150°C. Confirm your application's temperature requirements before selecting a substitute.

Q: Can I mix different substitute part numbers in the same design?

A: All listed substitutes meet the same electrical protection criteria. However, maintain consistency within a single PCB assembly to simplify procurement, inventory management, and field service documentation.

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