P4KE7.5 Equivalent & Substitute Parts

Part Overview

The P4KE7.5 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in through-hole applications. The device features a 6V reverse standoff voltage with 400W peak pulse power handling capability in a DO-204AL (DO-41) axial package. The main part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

P4KE7.5

Littelfuse Inc.In Stock: 930P4KE7.5 Datasheet

Current PartRFQ

P4KE7.5A

Taiwan Semiconductor CorporationIn Stock: 1112P4KE7.5A Datasheet

DirectRFQ

P4KE7.5A-G

Comchip TechnologyIn Stock: 840P4KE7.5A-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P4KE7.5 are qualified based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): 6.4V
• Voltage - Clamping (Max) @ Ipp: within acceptable range (11.3V to 11.87V)
• Current - Peak Pulse (10/1000µs): minimum 35.4A
• Power - Peak Pulse: 400W
• Package / Case: DO-204AL or DO-41 axial configuration
• Unidirectional Channels: 1
• Type: Zener diode
• Mounting Type: Through Hole

Both substitute parts maintain the same reverse standoff voltage, peak pulse power rating, and package form factor. Variations in clamping voltage and peak pulse current remain within acceptable operating margins for general-purpose transient suppression applications.

Parameter Comparison

Engineering Selection Recommendations

Both P4KE7.5A and P4KE7.5A-G are active product alternatives to the obsolete P4KE7.5. Selection between these substitutes depends on application-specific requirements:

P4KE7.5A (Taiwan Semiconductor Corporation) maintains identical operating temperature range (-55°C ~ 175°C) to the original part and is supplied in Tape & Reel packaging, suitable for automated assembly processes. This part demonstrates full parameter compatibility with the original specification.

P4KE7.5A-G (Comchip Technology) operates within a reduced temperature range (-55°C ~ 150°C) and is supplied in bulk packaging. This part is suitable for applications where the maximum junction temperature requirement does not exceed 150°C. The clamping voltage and peak pulse current remain within acceptable substitution margins.

All three parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can P4KE7.5A and P4KE7.5A-G be used interchangeably with the original P4KE7.5?

A: Both parts are functionally equivalent for general-purpose transient voltage suppression. The reverse standoff voltage (6.4V), peak pulse power (400W), and package configuration (DO-204AL/DO-41 axial) are identical. Differences in clamping voltage (11.3V vs. 11.87V) and peak pulse current (35.4A to 37A vs. 36.3A) fall within acceptable operating margins for this device category.

Q: What is the primary difference between P4KE7.5A and P4KE7.5A-G?

A: The primary differences are operating temperature range and packaging format. P4KE7.5A supports -55°C ~ 175°C and is supplied in Tape & Reel format. P4KE7.5A-G supports -55°C ~ 150°C and is supplied in bulk packaging. Select based on your assembly process requirements and maximum junction temperature specification.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three parts—P4KE7.5, P4KE7.5A, and P4KE7.5A-G—are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: What packaging options are available for these substitutes?

A: P4KE7.5A is available in Tape & Reel (TR) format for automated pick-and-place assembly. P4KE7.5A-G is available in bulk packaging. Both maintain the same DO-204AL (DO-41) axial through-hole package configuration.

Q: Can these parts be used in high-temperature applications?

A: P4KE7.5A supports operation up to 175°C junction temperature, matching the original part specification. P4KE7.5A-G is rated to 150°C junction temperature. Verify your application's maximum junction temperature requirement before selection.