M1.5KE24AE3 Equivalent & Substitute Parts

Part Overview

The M1.5KE24AE3 is an active Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, classified as a unidirectional Zener-type device. This through-hole component is designed for general-purpose transient voltage protection applications with a peak pulse power rating of 1500W. The part is currently in active production status with 732 units available in inventory.

Equivalent and substitute parts are identified to address supply chain continuity, inventory availability, or specific application requirements where alternative manufacturers or package configurations meet the electrical and mechanical specifications of the original design.

Substiute Parts

M1.5KE24AE3

Microchip TechnologyIn Stock: 817M1.5KE24AE3 Datasheet

Current PartRFQ

1.5KE24A

Taiwan Semiconductor CorporationIn Stock: 148381.5KE24A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M1.5KE24AE3 is determined by equivalence across the following critical electrical parameters:

• Voltage - Reverse Standoff (Typ): 20.5V
• Voltage - Breakdown (Min): 22.8V
• Voltage - Clamping (Max) @ Ipp: 33.2V
• Power - Peak Pulse: 1500W (1.5kW)
• Mounting Type: Through Hole
• Package / Case: DO-201AA, DO-27, Axial
• Type: Zener
• Unidirectional Channels: 1

The substitute part 1.5KE24A meets all critical electrical parameters and maintains mechanical compatibility through identical package specifications. Variations in peak pulse current (47A versus 45A) and operating temperature range remain within acceptable substitution tolerances for general-purpose TVS applications.

Parameter Comparison

Engineering Selection Recommendations

M1.5KE24AE3 (Microchip Technology)

Select this part when military-grade qualification (MIL-PRF-19500) is required. This device is suitable for applications demanding military specification compliance and operates across the extended temperature range of -65°C to 150°C. The part is RoHS non-compliant, which may be acceptable in legacy systems or military applications where such compliance is not mandated.

1.5KE24A (Taiwan Semiconductor Corporation)

Select this part when RoHS3 compliance is required for commercial or consumer applications. This substitute maintains electrical equivalence across all critical TVS parameters and offers superior inventory availability (14,729 units in stock versus 732 units). The operating temperature range extends to 175°C, providing additional thermal margin in high-temperature environments. Peak pulse current is rated at 47A, exceeding the original specification of 45A.

Both parts are active products with identical base part number designation (1.5KE24) and share the same package and mounting specifications.

Frequently Asked Questions (FAQ)

Q: Can the 1.5KE24A directly replace the M1.5KE24AE3 in existing designs?

A: Yes. The 1.5KE24A meets all critical electrical parameters: reverse standoff voltage, breakdown voltage, clamping voltage, and peak pulse power. Both devices are unidirectional Zener-type TVS diodes in DO-201AA/DO-27 axial packages. The higher peak pulse current rating (47A) of the substitute is compatible with applications designed for the original 45A specification.

Q: What is the difference in RoHS compliance between these parts?

A: The M1.5KE24AE3 is RoHS non-compliant, while the 1.5KE24A is ROHS3 compliant. RoHS3 compliance indicates the part meets current Restriction of Hazardous Substances directives. Selection depends on application regulatory requirements.

Q: Are the operating temperature ranges interchangeable?

A: The M1.5KE24AE3 operates from -65°C to 150°C, while the 1.5KE24A operates from -55°C to 175°C. The substitute part has a narrower lower temperature limit (-55°C versus -65°C) but extends to a higher upper limit (175°C versus 150°C). Verify application temperature requirements before substitution.

Q: Do both parts use the same package?

A: Yes. Both the M1.5KE24AE3 and 1.5KE24A use DO-201AA, DO-27, and axial package configurations. They are mechanically and electrically interchangeable in through-hole PCB designs.

Q: What is the significance of the base part number 1.5KE24?

A: The base part number 1.5KE24 identifies the core electrical specification: 1.5kW peak pulse power and 24V nominal voltage rating. Both the M1.5KE24AE3 and 1.5KE24A share this base designation, confirming their functional equivalence.

Q: Which part should be selected for new designs?

A: Selection depends on specific application requirements. For military applications requiring MIL-PRF-19500 qualification, use the M1.5KE24AE3. For commercial applications requiring RoHS3 compliance and maximum inventory availability, use the 1.5KE24A.