ICT-12 Equivalent & Substitute Parts

Part Overview

The ICT-12 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 12V reverse standoff voltage and provides 70A peak pulse current capability in a DO-13 package. The product maintains active status with 998 units in current inventory stock.

Substitute parts are identified to address application requirements including package format preferences, compliance certifications, or inventory availability while maintaining electrical performance within specified parameters.

Substiute Parts

ICT-12

Microchip TechnologyIn Stock: 1085ICT-12 Datasheet

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1.5KE15A

Taiwan Semiconductor CorporationIn Stock: 150811.5KE15A Datasheet

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1.5KE15A

Taiwan Semiconductor CorporationIn Stock: 150811.5KE15A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ICT-12 are identified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Unidirectional channel configuration (1 channel required)
• Peak pulse power rating (1500W minimum)
• Peak pulse current capability (70A or greater)
• Reverse standoff voltage range (12V nominal operation)
• Through-hole mounting type
• General-purpose transient protection application class
• Zener diode type

The 1.5KE15A from Taiwan Semiconductor Corporation qualifies as a substitute based on matching peak pulse power (1500W), exceeding peak pulse current (74A), maintaining compatible voltage standoff characteristics (12.8V typical), and providing through-hole mounting in an alternative package format (DO-201).

Parameter Comparison

Engineering Selection Recommendations

ICT-12 Selection Criteria:

• Primary choice for applications requiring DO-13 package format
• Extended lower operating temperature limit (-65°C minimum) for cryogenic environments
• Lower clamping voltage (16.5V) for tighter transient suppression
• RoHS non-compliant status for legacy or unrestricted applications

1.5KE15A Selection Criteria:

• Alternative for applications accepting DO-201 axial package format
• ROHS3 compliance required for regulated or restricted substance environments
• Higher peak pulse current capability (74A) provides margin above 70A requirement
• Slightly elevated clamping voltage (21.2V) acceptable for applications with higher transient tolerance
• Minimum operating temperature of -55°C suitable for standard industrial range

Both parts maintain active product status and equivalent peak pulse power rating (1500W). Selection between ICT-12 and 1.5KE15A depends on package format compatibility and regulatory compliance requirements specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the 1.5KE15A directly replace the ICT-12 in existing PCB designs?

A: Direct PCB replacement is not possible due to package format differences. The ICT-12 uses DO-13 package while the 1.5KE15A uses DO-201 axial package. PCB layout and footprint modifications are required for substitution.

Q: What is the primary electrical difference between these parts?

A: The primary difference is clamping voltage at peak pulse current. The ICT-12 clamps at 16.5V maximum while the 1.5KE15A clamps at 21.2V maximum. Both maintain equivalent peak pulse power (1500W) and comparable reverse standoff voltages (12V and 12.8V respectively).

Q: Are both parts suitable for the same voltage protection applications?

A: Both parts operate within compatible voltage ranges for 12V nominal protection circuits. The ICT-12 provides tighter clamping control, while the 1.5KE15A offers higher current capacity (74A versus 70A) with slightly higher clamping voltage.

Q: What compliance difference exists between these parts?

A: The ICT-12 is RoHS non-compliant while the 1.5KE15A is ROHS3 compliant. Applications subject to RoHS regulations must use the 1.5KE15A. Legacy or unrestricted applications may use either part.

Q: Does operating temperature range affect part selection?

A: The ICT-12 operates from -65°C to 175°C while the 1.5KE15A operates from -55°C to 175°C. Applications requiring operation below -55°C must use the ICT-12. Standard industrial applications within -55°C to 175°C range can use either part.

Q: Are inventory levels a consideration for part selection?

A: The 1.5KE15A has significantly higher inventory availability (15,029 units) compared to the ICT-12 (998 units). Applications with extended lead time requirements may benefit from 1.5KE15A selection based on stock availability.