M5KP48AE3 Equivalent & Substitute Parts

Part Overview

The M5KP48AE3 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This through-hole component operates with a 48V reverse standoff voltage and provides 5000W peak pulse power dissipation capability. The part is classified as Active product status with Military grade qualification per MIL-PRF-19500. Substitute parts are identified to address packaging availability, compliance requirements, or operational temperature range considerations while maintaining electrical equivalence.

Substiute Parts

M5KP48AE3

Microchip TechnologyIn Stock: 718M5KP48AE3 Datasheet

Current PartRFQ

5KP48A

Littelfuse Inc.In Stock: 88785KP48A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M5KP48AE3 is determined by electrical parameter equivalence across the following critical specifications:

• Voltage Rating: Reverse standoff voltage of 48V, breakdown minimum of 53.3V, and clamping voltage maximum of 77.4V must remain constant
• Current Handling: Peak pulse current rating of 65A minimum
• Power Dissipation: Peak pulse power of 5000W (5kW)
• Topology: Unidirectional zener diode configuration with single channel
• Mounting: Through-hole axial package format

The identified substitute part 5KP48A from Littelfuse Inc. maintains all critical electrical parameters within specification while offering alternative packaging (P600 axial format) and enhanced RoHS3 compliance. Peak pulse current of 65.9A exceeds the minimum requirement. Operating temperature range extends to 175°C, providing broader thermal capability than the original specification.

Parameter Comparison

Engineering Selection Recommendations

M5KP48AE3 (Microchip Technology)

Select this part when Military grade qualification per MIL-PRF-19500 is a mandatory design requirement. The component maintains Active product status with established supply chain through Microchip Technology. DO-204AR package format is specified for applications with existing PCB layout constraints. Note that RoHS non-compliance may restrict use in certain regulated markets or end-use applications.

5KP48A (Littelfuse Inc.)

Select this substitute when RoHS3 compliance is required for the end application. The part delivers equivalent electrical performance with extended operating temperature range (-55°C to 175°C) suitable for broader thermal environments. P600 axial package provides mechanical compatibility with through-hole assembly processes. Higher inventory availability (8800 pcs) supports production volume requirements. This substitute is appropriate for applications where Military grade certification is not contractually mandated.

Frequently Asked Questions (FAQ)

Q: Can the 5KP48A directly replace the M5KP48AE3 in existing designs?

A: Electrical substitution is valid. Both components maintain identical voltage ratings (48V standoff, 77.4V clamping) and power dissipation (5000W). Physical package differences exist: M5KP48AE3 uses DO-204AR format while 5KP48A uses P600 format. Both are axial through-hole packages with compatible lead spacing for standard PCB footprints. Verify PCB layout accommodates the specific package variant before implementation.

Q: What is the difference between DO-204AR and P600 packages?

A: Both are axial through-hole package formats for TVS diodes. DO-204AR is the Microchip designation; P600 is the Littelfuse designation. Physical dimensions and lead configurations differ between manufacturers. Consult component datasheets for precise footprint specifications to confirm PCB compatibility.

Q: Does the 5KP48A meet Military specifications?

A: The 5KP48A does not carry MIL-PRF-19500 qualification. If Military grade certification is a contractual or design requirement, the M5KP48AE3 must be used. For commercial and industrial applications without Military qualification mandates, the 5KP48A provides equivalent electrical performance.

Q: Why does the 5KP48A have a higher operating temperature maximum?

A: The 5KP48A operates to 175°C junction temperature versus 150°C for the M5KP48AE3. This extended thermal capability is a characteristic of the Littelfuse 5KP series design. Both components function within their specified temperature ranges; the substitute offers broader thermal margin for high-temperature environments.

Q: Is RoHS compliance a factor in selecting between these parts?

A: Yes. The M5KP48AE3 is RoHS non-compliant; the 5KP48A is ROHS3 compliant. Applications subject to RoHS regulations, EU directives, or customer compliance requirements must use the 5KP48A. Commercial applications without RoHS mandates may use either part based on availability and certification requirements.

Q: What inventory considerations apply to these parts?

A: M5KP48AE3 inventory is 688 pcs in bulk packaging. 5KP48A inventory is 8800 pcs in cut tape packaging. For high-volume production, the 5KP48A offers significantly greater availability. Bulk versus cut tape packaging affects handling and assembly processes; verify compatibility with production equipment.