ICT-22C Equivalent & Substitute Parts

Part Overview

The ICT-22C is a 22V Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This through-hole component operates with a 32V maximum clamping voltage and 40A peak pulse current capability, housed in a DO-13 package. The device is currently active in production and maintains an inventory of 836 pieces in stock.

Substitute parts are identified when equivalent electrical performance can be achieved through alternative manufacturers while maintaining compatibility with the application's voltage protection requirements, current handling capacity, and thermal operating range.

Substiute Parts

ICT-22C

Microchip TechnologyIn Stock: 854ICT-22C Datasheet

Current PartRFQ

1.5KE22CA

Taiwan Semiconductor CorporationIn Stock: 50881.5KE22CA Datasheet

SimilarRFQ

1.5KE27CA

Taiwan Semiconductor CorporationIn Stock: 12141.5KE27CA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ICT-22C are qualified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Voltage - Reverse Standoff within the 22V nominal class
• Voltage - Clamping (Max) @ Ipp compatible with 32V protection threshold
• Current - Peak Pulse (10/1000µs) equal to or exceeding 40A
• Power - Peak Pulse rating of 1500W (1.5kW)
• Through-hole mounting configuration
• Single bidirectional channel Zener diode topology
• Operating temperature range encompassing the application environment

Substitute Parts Identified:

1. 1.5KE22CA (Taiwan Semiconductor Corporation) – Voltage standoff 18.8V, clamping 30.6V, 51A peak pulse current
2. 1.5KE27CA (Taiwan Semiconductor Corporation) – Voltage standoff 23.1V, clamping 37.5V, 42A peak pulse current

Both substitute parts maintain the 1500W peak pulse power rating and through-hole mounting requirement. Package differences (DO-201 vs. DO-13) represent mechanical variations that do not affect electrical substitution validity.

Parameter Comparison

Engineering Selection Recommendations

ICT-22C Selection: Select the ICT-22C when the DO-13 package form factor is a mandatory requirement for the application's physical layout. This part maintains active production status and is available in bulk packaging. The component is RoHS non-compliant; applications requiring RoHS3 compliance must select an alternative.

1.5KE22CA Selection: The 1.5KE22CA provides electrical equivalence with a lower reverse standoff voltage (18.8V vs. 22V) and slightly lower clamping voltage (30.6V vs. 32V). This part delivers higher peak pulse current (51A vs. 40A) and achieves ROHS3 compliance. The DO-201 package represents a larger form factor suitable for applications where package size is not constrained. Operating temperature minimum is -55°C, which is 10°C higher than the ICT-22C.

1.5KE27CA Selection: The 1.5KE27CA operates at a higher voltage class with reverse standoff of 23.1V and clamping voltage of 37.5V. This part is suitable for applications requiring higher voltage protection thresholds while maintaining the 1500W power rating and 42A peak pulse current. ROHS3 compliance is achieved. The DO-201 package and -55°C minimum operating temperature apply as with the 1.5KE22CA.

Compliance Considerations: Applications subject to RoHS3 regulatory requirements must use either 1.5KE22CA or 1.5KE27CA, as the ICT-22C is RoHS non-compliant. All three parts maintain REACH Unaffected status and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can the 1.5KE22CA directly replace the ICT-22C in all applications?

A: The 1.5KE22CA provides electrical substitution for general-purpose TVS applications. The lower reverse standoff voltage (18.8V vs. 22V) and clamping voltage (30.6V vs. 32V) are acceptable for circuits designed around the 22V protection class. Physical package differences (DO-201 vs. DO-13) require PCB layout verification. The higher peak pulse current (51A) provides additional margin. Operating temperature minimum of -55°C is suitable for most industrial applications; verify if your application requires the -65°C minimum of the ICT-22C.

Q: What is the difference between the 1.5KE22CA and 1.5KE27CA?

A: The 1.5KE27CA operates at a higher voltage class. Reverse standoff is 23.1V (vs. 18.8V) and clamping voltage is 37.5V (vs. 30.6V). Peak pulse current is 42A (vs. 51A). Select 1.5KE27CA when the circuit requires protection at higher voltage thresholds; select 1.5KE22CA for 22V-class protection with higher current capacity.

Q: Are package differences between DO-13 and DO-201 significant for substitution?

A: Package differences affect physical board layout and thermal dissipation characteristics. DO-13 is a smaller axial package; DO-201 is a larger axial package. Both are through-hole components suitable for manual or automated assembly. Verify PCB footprint compatibility and thermal design margins before substitution. Axial lead spacing and component height differ between packages.

Q: Does the RoHS compliance difference affect electrical performance?

A: RoHS compliance status reflects manufacturing process and material composition but does not alter electrical performance specifications. The ICT-22C is RoHS non-compliant; the 1.5KE22CA and 1.5KE27CA are ROHS3 compliant. Select based on regulatory requirements for your end application and market region.

Q: What is the significance of the -55°C vs. -65°C operating temperature minimum?

A: The ICT-22C operates from -65°C to 175°C; the 1.5KE22CA and 1.5KE27CA operate from -55°C to 175°C. For applications operating below -55°C ambient or junction temperature, the ICT-22C is required. For standard industrial temperature ranges (-40°C to 85°C), both substitute parts are suitable.

Q: Can I use the 1.5KE27CA in a circuit designed for the ICT-22C?

A: The 1.5KE27CA operates at a higher voltage class and is not a direct substitute for 22V-class protection. Use only when the circuit design accommodates the higher clamping voltage (37.5V vs. 32V). Verify that downstream components tolerate the higher transient voltage before substitution.

Q: What inventory considerations apply to these parts?

A: The ICT-22C has 836 pieces in stock (bulk packaging). The 1.5KE22CA has 5050 pieces in stock (tape & reel). The 1.5KE27CA has 1110 pieces in stock (tape & reel). Tape & reel packaging is standard for automated assembly; bulk packaging is suitable for manual assembly or small-volume applications.