ICT-36 Equivalent & Substitute Parts

Part Overview

The ICT-36 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 36V reverse standoff voltage and delivers 1500W peak pulse power dissipation. The part is currently in active production status with 866 units in stock.

Substitute parts are necessary when the original ICT-36 is unavailable, when alternative packaging formats are required for board redesign, or when compliance certifications differ from project requirements.

Substiute Parts

ICT-36

Microchip TechnologyIn Stock: 946ICT-36 Datasheet

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1.5KE36A

Taiwan Semiconductor CorporationIn Stock: 201181.5KE36A Datasheet

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1.5KE36A

Taiwan Semiconductor CorporationIn Stock: 201181.5KE36A Datasheet

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1.5KE39A

Taiwan Semiconductor CorporationIn Stock: 420931.5KE39A Datasheet

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1.5KE43A

Taiwan Semiconductor CorporationIn Stock: 368361.5KE43A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ICT-36 is determined by the following critical parameters:

Voltage Parameters: The reverse standoff voltage, breakdown voltage minimum, and clamping voltage maximum define the protection threshold. Substitute parts must operate within compatible voltage ranges to provide equivalent overvoltage suppression.

Current and Power Ratings: Peak pulse current and peak pulse power dissipation capacity determine the component's ability to handle transient events. Substitute parts must maintain the 1500W power rating and support comparable peak pulse current levels.

Package and Mounting: The ICT-36 uses DO-13 through-hole packaging. Substitute parts listed use DO-201 (DO-27, Axial) packaging, which represents a different form factor suitable for alternative board layouts while maintaining through-hole mounting compatibility.

Temperature Range: Operating temperature specifications must support the application environment. The ICT-36 operates from -65°C to 175°C; substitute parts operate from -55°C to 175°C.

Compliance and Status: All listed substitutes are active production parts with RoHS3 compliance, whereas the ICT-36 is RoHS non-compliant.

Parameter Comparison

Engineering Selection Recommendations

1.5KE36A Selection: This substitute provides the closest voltage alignment to the ICT-36, with a 30.8V reverse standoff voltage and 49.9V clamping voltage. Peak pulse current is 31A, exceeding the ICT-36 specification. This part is RoHS3 compliant and suitable for applications requiring regulatory compliance. The DO-201 package accommodates alternative board layouts. Inventory availability is 20,100 units.

1.5KE39A Selection: This substitute operates at 33.3V reverse standoff with 53.9V clamping voltage, positioning it between the 1.5KE36A and 1.5KE43A options. Peak pulse current is 29A. This part is RoHS3 compliant with 42,000 units in stock, providing the highest inventory availability among substitutes.

1.5KE43A Selection: This substitute provides the highest voltage rating at 36.8V reverse standoff and 59.3V clamping voltage, closely matching the ICT-36 standoff specification. Peak pulse current is 26A. This part is RoHS3 compliant with 36,729 units available.

All substitute parts maintain the 1500W peak pulse power rating and through-hole mounting configuration. Selection depends on specific voltage protection requirements and compliance mandates for the target application.

Frequently Asked Questions (FAQ)

Q: Can the 1.5KE36A directly replace the ICT-36 in existing designs?

A: The 1.5KE36A operates at a lower reverse standoff voltage (30.8V vs. 36V) and uses DO-201 packaging instead of DO-13. Board layout modifications are required. Electrical performance differs due to lower breakdown and clamping voltages.

Q: What is the primary difference between the three substitute options?

A: The three substitutes differ in voltage ratings. The 1.5KE36A provides the lowest voltage protection, the 1.5KE39A offers intermediate protection, and the 1.5KE43A provides the highest voltage protection closest to the ICT-36 specification. All maintain identical 1500W power dissipation.

Q: Does the DO-201 package offer any advantages over DO-13?

A: DO-201 (axial) packaging provides alternative board routing options and may accommodate different PCB layouts. Both are through-hole formats. Package selection depends on mechanical board constraints and design requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three substitute parts (1.5KE36A, 1.5KE39A, 1.5KE43A) are RoHS3 compliant, whereas the ICT-36 is RoHS non-compliant. This is significant for applications subject to environmental regulations.

Q: What is the temperature operating range difference?

A: The ICT-36 operates from -65°C to 175°C. All substitute parts operate from -55°C to 175°C. The ICT-36 supports a 10°C lower minimum temperature. Applications requiring operation below -55°C must use the ICT-36.

Q: Which substitute has the highest peak pulse current rating?

A: The 1.5KE36A delivers 31A peak pulse current, the highest among the three substitutes. The ICT-36 delivers 23A. Higher current capacity provides additional transient handling margin.

Q: Can substitutes be used interchangeably in the same circuit?

A: No. Each substitute operates at different voltage thresholds. Circuit protection performance varies based on the selected part's clamping and breakdown voltages. Selection must align with the specific overvoltage protection requirement.