P4KE220-B Equivalent & Substitute Parts

Part Overview

The P4KE220-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 185V reverse standoff voltage rating and 344.4V maximum clamping voltage with 1.3A peak pulse current capability in a through-hole DO-204AL (DO-41) package format.

The P4KE220-B is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades.

Substiute Parts

P4KE220-B

Littelfuse Inc.In Stock: 905P4KE220-B Datasheet

Current PartRFQ

P4KE220A

Taiwan Semiconductor CorporationIn Stock: 60162P4KE220A Datasheet

DirectRFQ

P4KE220A-B

Littelfuse Inc.In Stock: 872P4KE220A-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P4KE220-B are qualified based on the following electrical and mechanical parameters:

• Reverse Standoff Voltage: 185V (identical)
• Current - Peak Pulse (10/1000µs): 1.3A (identical)
• Power - Peak Pulse: 400W (identical)
• Operating Temperature Range: -55°C ~ 175°C (identical)
• Package / Case: DO-204AL, DO-41, Axial (identical)
• Mounting Type: Through Hole (identical)
• Type: Zener, Unidirectional (identical)

The substitute parts P4KE220A and P4KE220A-B maintain all critical electrical and mechanical specifications. Both alternatives share the same base product number (P4KE220) and are rated for identical standoff voltage, peak pulse current, power dissipation, and operating temperature range. Both are packaged in the same DO-204AL through-hole format.

Parameter Comparison

Engineering Selection Recommendations

Both P4KE220A and P4KE220A-B are active product alternatives to the obsolete P4KE220-B. Selection between the two substitutes should be based on packaging and availability requirements:

P4KE220A (Taiwan Semiconductor Corporation) is supplied in Tape & Reel (TR) packaging with 60,100 pieces in stock, suitable for high-volume automated assembly operations.

P4KE220A-B (Littelfuse Inc.) is supplied in Bulk packaging with 763 pieces in stock, suitable for lower-volume applications or manual assembly processes. This option maintains the original manufacturer (Littelfuse Inc.) for design continuity.

Both alternatives are ROHS3 compliant, carry identical ECCN and HTSUS classifications, and maintain MSL Level 1 (Unlimited) moisture sensitivity ratings. The clamping voltage differential (328V versus 344.4V) remains within acceptable tolerance for general-purpose transient suppression applications where both parts share identical standoff voltage and peak pulse current specifications.

Frequently Asked Questions (FAQ)

Q: Can P4KE220A or P4KE220A-B be used as direct replacements for P4KE220-B?

A: Yes. Both substitute parts maintain identical reverse standoff voltage (185V), peak pulse current (1.3A), power dissipation (400W), operating temperature range (-55°C ~ 175°C), and through-hole DO-204AL package format. The clamping voltage difference (328V versus 344.4V) does not affect functional compatibility for general-purpose overvoltage protection.

Q: What is the difference between P4KE220A and P4KE220A-B?

A: The primary differences are manufacturer and packaging format. P4KE220A is manufactured by Taiwan Semiconductor Corporation and supplied in Tape & Reel format. P4KE220A-B is manufactured by Littelfuse Inc. (the original P4KE220-B manufacturer) and supplied in Bulk format. Electrical specifications are identical.

Q: Are both substitutes available in the same package format?

A: Yes. Both P4KE220A and P4KE220A-B use the DO-204AL (DO-41) axial through-hole package, ensuring mechanical and electrical compatibility with existing PCB designs.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. Both P4KE220A and P4KE220A-B are ROHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity ratings and identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications.

Q: Which substitute should be selected for new production?

A: P4KE220A is recommended for high-volume automated assembly due to Tape & Reel packaging and superior stock availability (60,100 pieces). P4KE220A-B is suitable for lower-volume applications or when maintaining the original Littelfuse manufacturer is preferred.