M5KP45A Equivalent & Substitute Parts

Part Overview

The M5KP45A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose transient protection applications. This through-hole component operates with a reverse standoff voltage of 45V and provides clamping protection at 72.7V maximum. The device is qualified to MIL-PRF-19500 military standards and maintains active product status. Substitute parts are identified to support inventory management, supply chain continuity, and component availability across manufacturing environments.

Substiute Parts

M5KP45A

Microchip TechnologyIn Stock: 1153M5KP45A Datasheet

Current PartRFQ

M5KP45AE3

Microchip TechnologyIn Stock: 1196M5KP45AE3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M5KP45A is determined by electrical and mechanical parameter equivalence. The following criteria establish valid substitution:

Electrical Parameters (Critical):

• Voltage - Reverse Standoff: 45V (Typ)
• Voltage - Breakdown: 50V (Min)
• Voltage - Clamping: 72.7V (Max) @ Ipp
• Current - Peak Pulse: 69A (10/1000µs)
• Power - Peak Pulse: 5000W

Mechanical Parameters (Critical):

• Package / Case: DO-204AR, Axial
• Mounting Type: Through Hole

Compliance & Qualification (Critical):

• Qualification: MIL-PRF-19500
• Operating Temperature: -65°C to 150°C (TJ)
• Type: Zener, Unidirectional (1 Channel)

Substitute parts must match all critical electrical, mechanical, and compliance parameters to ensure functional equivalence in circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

The M5KP45AE3 is a direct electrical and mechanical equivalent to the M5KP45A. Both components are manufactured by Microchip Technology and carry identical electrical specifications across all critical parameters: 45V reverse standoff voltage, 50V minimum breakdown voltage, 72.7V maximum clamping voltage, and 69A peak pulse current capacity.

Both parts are qualified to MIL-PRF-19500 military standards and maintain active product status. The DO-204AR axial through-hole package is identical for both components, ensuring mechanical compatibility in existing circuit board designs without layout modifications.

Selection between M5KP45A and M5KP45AE3 is determined by inventory availability and supply chain requirements. Both components satisfy identical functional and compliance requirements for general-purpose transient voltage suppression applications operating within the -65°C to 150°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can M5KP45AE3 replace M5KP45A in existing designs?

A: Yes. The M5KP45AE3 is electrically and mechanically equivalent to the M5KP45A. All critical parameters including voltage ratings, current capacity, package type, and military qualification are identical. Direct substitution is supported without circuit redesign.

Q: Are there differences in the DO-204AR package between these parts?

A: No. Both M5KP45A and M5KP45AE3 use the identical DO-204AR axial through-hole package. Pin spacing, lead diameter, and mechanical dimensions are equivalent. Board-level compatibility is maintained.

Q: Do both parts meet the same military qualification standards?

A: Yes. Both M5KP45A and M5KP45AE3 are qualified to MIL-PRF-19500 military standards. Military-grade performance and reliability specifications are identical.

Q: What is the operating temperature range for both parts?

A: Both components operate across the identical temperature range of -65°C to 150°C (junction temperature). Thermal performance characteristics are equivalent.

Q: Are the electrical protection characteristics identical?

A: Yes. Both parts provide identical transient voltage suppression: 45V reverse standoff voltage, 72.7V maximum clamping voltage at 69A peak pulse current, and 5000W peak pulse power dissipation capacity.

Q: Can these parts be used interchangeably in production?

A: Yes. M5KP45A and M5KP45AE3 are direct substitutes. Both maintain active product status and are available from Microchip Technology. Selection is based on inventory availability and supply chain logistics.