5KP220-B Equivalent & Substitute Parts

Part Overview

The 5KP220-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This part operates with a reverse standoff voltage of 220V and a maximum clamping voltage of 389.66V at peak pulse current. The 5KP220-B is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	5KP220-B
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Unidirectional Channels	1
Voltage - Reverse Standoff (Typ)	220V
Voltage - Breakdown (Min)	231.3V
Voltage - Clamping (Max) @ Ipp	389.66V
Power - Peak Pulse	5000W (5kW)
Operating Temperature	-55°C ~ 175°C (TJ)
Mounting Type	Through Hole
Package / Case	P600, Axial
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 5KP220-B is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Reverse standoff voltage within the 220V class
Unidirectional channel configuration (1 channel)
Through-hole axial mounting compatibility
Operating temperature range support (-55°C minimum)
ROHS3 compliance

Substitution Groups:

Group 1: Direct Series Substitutes (5KP Series - Littelfuse) Parts 5KP220A and 5KP220A-B maintain identical reverse standoff voltage (220V), same package (P600, Axial), and equivalent power rating (5000W). These are active products from the same manufacturer and series, differing only in packaging format (Cut Tape vs. Bulk).

Group 2: Cross-Manufacturer Voltage Class Substitutes (214V-250V Range) Parts 1.5KE250A, 1.5KE250A-G, P4KE250A-AP, P4KE250A-BP, P4KE250A-TP, and P6KE250A-G operate within the 214V–250V reverse standoff voltage range. These parts share the same unidirectional zener type and through-hole axial mounting but differ in package form factors (DO-201, DO-41, DO-15) and power dissipation ratings (400W–1500W). These substitutes are suitable where circuit design accommodates lower power ratings and alternative package geometries.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Power - Peak Pulse	Package / Case	Operating Temperature	Product Status
5KP220-B	Littelfuse Inc.	220V	389.66V	5000W	P600, Axial	-55°C ~ 175°C	Obsolete
5KP220A	Littelfuse Inc.	220V	371.1V	5000W	P600, Axial	-55°C ~ 175°C	Active
5KP220A-B	Littelfuse Inc.	220V	371.1V	5000W	P600, Axial	-55°C ~ 175°C	Active
1.5KE250A	Taiwan Semiconductor Corporation	214V	344V	1500W	DO-201AA, Axial	-55°C ~ 175°C	Active
1.5KE250A-G	Comchip Technology	214V	344V	1500W	DO-201AA, Axial	-55°C ~ 150°C	Active
P4KE250A-AP	Micro Commercial Co	214V	344V	400W	DO-204AL, Axial	-55°C ~ 175°C	Active
P4KE250A-BP	Micro Commercial Co	214V	344V	400W	DO-204AL, Axial	-55°C ~ 175°C	Active
P4KE250A-TP	Micro Commercial Co	214V	344V	400W	DO-204AL, Axial	-55°C ~ 175°C	Active
P6KE250A-G	Comchip Technology	214V	344V	600W	DO-204AC, Axial	-55°C ~ 150°C	Active

Engineering Selection Recommendations

For Direct Replacement (Recommended Primary Path): Select 5KP220A or 5KP220A-B. Both are active products from Littelfuse Inc. in the same 5KP series with identical reverse standoff voltage (220V), package geometry (P600, Axial), and power rating (5000W). These parts maintain full electrical and mechanical compatibility with the obsolete 5KP220-B. Both are ROHS3 compliant. The choice between 5KP220A (Cut Tape packaging) and 5KP220A-B (Bulk packaging) depends on procurement and assembly requirements.

For Cross-Manufacturer Substitution (When Direct Replacement Unavailable): The 1.5KE250A and 1.5KE250A-G are suitable alternatives where circuit design accommodates a lower power dissipation rating (1500W vs. 5000W) and the DO-201 package form factor. Both maintain the -55°C to 175°C operating temperature range (1.5KE250A-G limited to -55°C to 150°C) and are ROHS3 compliant.

The P4KE250A series (AP, BP, TP variants) and P6KE250A-G are suitable only for applications with significantly reduced power requirements (400W–600W) and where the smaller DO-41 or DO-15 package geometries are acceptable. These parts operate within the same voltage class but are not recommended for high-power transient suppression applications equivalent to the 5KP220-B.

Compliance Considerations: All recommended substitutes maintain ROHS3 compliance. The 1.5KE250A and P4KE250A series support the full -55°C to 175°C operating temperature range. The 1.5KE250A-G and P6KE250A-G are limited to -55°C to 150°C; verify application requirements before selection.

Frequently Asked Questions (FAQ)

Q: Can 5KP220A or 5KP220A-B be used as direct replacements for 5KP220-B? A: Yes. Both parts are active Littelfuse products in the same 5KP series with identical reverse standoff voltage (220V), package (P600, Axial), and power rating (5000W). They are fully compatible replacements for the obsolete 5KP220-B.

Q: What is the difference between 5KP220A and 5KP220A-B? A: The electrical specifications are identical. The difference is packaging format: 5KP220A is supplied in Cut Tape (CT), while 5KP220A-B is supplied in Bulk. Select based on procurement and assembly line requirements.

Q: Can I use 1.5KE250A as a substitute for 5KP220-B? A: 1.5KE250A is a cross-manufacturer substitute suitable only if your circuit design accommodates a lower power dissipation rating (1500W vs. 5000W). The reverse standoff voltage is lower (214V vs. 220V), and the package is DO-201 instead of P600. Verify circuit requirements before substitution.

Q: What are the key differences between the P4KE250A series and the 5KP220-B? A: The P4KE250A series (AP, BP, TP) has significantly lower power rating (400W vs. 5000W), smaller package (DO-41 vs. P600), and lower peak pulse current (1.2A vs. unspecified). These parts are suitable only for low-power applications and are not recommended as general substitutes for the 5KP220-B.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All recommended substitute parts listed are ROHS3 compliant.

Q: What is the operating temperature range difference between substitutes? A: The 5KP220A, 5KP220A-B, 1.5KE250A, and P4KE250A series support -55°C to 175°C. The 1.5KE250A-G and P6KE250A-G are limited to -55°C to 150°C. Verify your application's temperature requirements before selection.

Q: Can I mix different substitute parts in the same circuit? A: No. Use a single part number throughout the design. Mixing different TVS diode models with different electrical characteristics (voltage, clamping voltage, power rating) may result in uneven transient suppression and circuit malfunction.

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