P4KE7.5C Equivalent & Substitute Parts

Part Overview

The P4KE7.5C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 6V reverse standoff voltage rating and 400W peak pulse power handling capability in a through-hole DO-204AL (DO-41) axial package. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for continued system support and new designs.

Substiute Parts

P4KE7.5C

Littelfuse Inc.In Stock: 946P4KE7.5C Datasheet

Current PartRFQ

P4KE7.5CA

Taiwan Semiconductor CorporationIn Stock: 30325P4KE7.5CA Datasheet

DirectRFQ

P4KE7.5CA-G

Comchip TechnologyIn Stock: 922P4KE7.5CA-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE7.5C is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Reverse standoff voltage: 6.4V (Typ)
• Breakdown voltage minimum: ≥6.75V
• Clamping voltage maximum @ Ipp: ≤11.87V
• Peak pulse current: ≥36.3A
• Peak pulse power: 400W
• Bidirectional operation: 1 channel

Mechanical Compatibility Requirements:

• Mounting type: Through Hole
• Package / Case: DO-204AL or DO-41 (Axial)

Regulatory & Environmental Requirements:

• RoHS3 Compliance
• Operating temperature range: -55°C to 175°C (or compatible subset)

Substitute parts must satisfy all electrical parameters within the specified tolerances, maintain identical mechanical form factor and mounting characteristics, and comply with applicable regulatory standards.

Parameter Comparison

Engineering Selection Recommendations

P4KE7.5CA (Taiwan Semiconductor Corporation) is the primary substitute for the obsolete P4KE7.5C. This part maintains identical reverse standoff voltage (6.4V), meets all electrical parameter requirements with improved clamping voltage (11.3V vs. 11.87V), and exceeds peak pulse current specification (37A vs. 36.3A). The part is currently in active production status with substantial inventory availability (30,300 pcs). Full operating temperature range (-55°C to 175°C) and ROHS3 compliance are maintained. Tape & Reel packaging is suitable for automated assembly processes.

P4KE7.5CA-G (Comchip Technology) serves as a secondary substitute option. This part satisfies all critical electrical parameters with clamping voltage of 11.3V and peak pulse current of 35.4A. Active production status and ROHS3 compliance are confirmed. The operating temperature range is limited to -55°C to 150°C, which may restrict use in applications requiring the full 175°C upper thermal limit. Bulk packaging is available for manual assembly or lower-volume applications.

Both substitute parts are electrically and mechanically compatible with the P4KE7.5C and support direct replacement in existing designs.

Frequently Asked Questions (FAQ)

Q: Can P4KE7.5CA be used as a direct replacement for P4KE7.5C?

A: Yes. The P4KE7.5CA maintains the same reverse standoff voltage (6.4V), package form factor (DO-204AL/DO-41 axial), and mounting type (through-hole). All electrical parameters fall within acceptable substitution limits. The part is in active production with full ROHS3 compliance.

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

A: Both parts share identical reverse standoff voltage (6.4V) and clamping voltage (11.3V). The primary difference is operating temperature range: P4KE7.5CA supports -55°C to 175°C, while P4KE7.5CA-G is rated to -55°C to 150°C. Peak pulse current differs slightly (37A vs. 35.4A). Select based on thermal requirements of the application.

Q: Are the package dimensions identical between all three parts?

A: Yes. All three parts use the DO-204AL (DO-41) axial through-hole package with identical mechanical form factor. Packaging format differs (Littelfuse: standard, Taiwan Semiconductor: Tape & Reel, Comchip: Bulk), but the physical component dimensions are equivalent.

Q: Does clamping voltage variation affect circuit compatibility?

A: The P4KE7.5C specifies maximum clamping voltage of 11.87V. Both substitute parts (P4KE7.5CA and P4KE7.5CA-G) provide lower clamping voltage at 11.3V, which offers improved overvoltage protection performance. This represents a beneficial parameter shift and does not compromise compatibility.

Q: Are all three parts RoHS3 compliant?

A: Yes. The P4KE7.5C, P4KE7.5CA, and P4KE7.5CA-G are all ROHS3 compliant, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: Which substitute should be selected for new designs?

A: P4KE7.5CA (Taiwan Semiconductor Corporation) is recommended for new designs due to active production status, full operating temperature range support (-55°C to 175°C), and superior inventory availability. P4KE7.5CA-G serves as an alternative when thermal requirements do not exceed 150°C.