1.5KE75CA-T Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 1.5KE75CA-T is a bidirectional Zener transient voltage suppressor diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in through-hole applications. This part operates with a reverse standoff voltage of 64.1V and provides clamping at 103V with peak pulse current handling of 14.6A at 1500W peak pulse power. The 1.5KE75CA-T is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility across voltage ratings, clamping characteristics, and thermal operating ranges while accommodating different package formats and manufacturer specifications.

Substiute Parts

1.5KE75CA-T

Diodes IncorporatedIn Stock: 8891.5KE75CA-T Datasheet

Current PartRFQ

1.5KE75CA

Taiwan Semiconductor CorporationIn Stock: 252441.5KE75CA Datasheet

MFR RecommendedRFQ

1.5KE75CA-B

LittelfuseIn Stock: 32111.5KE75CA-B Datasheet

MFR RecommendedRFQ

1.5KE75CA-G

Comchip TechnologyIn Stock: 11621.5KE75CA-G Datasheet

MFR RecommendedRFQ

5KP58CE3/TR13

Microchip TechnologyIn Stock: 8025KP58CE3/TR13 Datasheet

MFR RecommendedRFQ

5KP64CA

Littelfuse Inc.In Stock: 27965KP64CA Datasheet

MFR RecommendedRFQ

5KP64CAE3/TR13

Microchip TechnologyIn Stock: 8065KP64CAE3/TR13 Datasheet

MFR RecommendedRFQ

TP6KE75CA

Littelfuse Inc.In Stock: 986TP6KE75CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1.5KE75CA-T are grouped into two categories based on electrical and mechanical compatibility:

Category 1: Direct Electrical Equivalents (DO-201 Package) These parts maintain the same reverse standoff voltage (64.1V), breakdown voltage (71.3V), clamping voltage (103V), and 1500W peak pulse power rating. They are housed in the DO-201 through-hole package format, ensuring mechanical compatibility with the original design. Peak pulse current varies slightly (14.6A to 15A) within acceptable tolerance. These parts are sourced from Taiwan Semiconductor Corporation, Littelfuse, and Comchip Technology, all with active product status.

Category 2: Higher Power Alternatives (P600 Package) These parts provide the same voltage protection characteristics (64V to 64.1V reverse standoff, 103V clamping) but in a larger P600 through-hole package with significantly higher peak pulse power (5000W) and current handling (48.5A to 49.5A). These are suitable only when board layout permits package substitution and higher transient energy dissipation is required or beneficial.

Key Parameters Determining Substitution:

• Reverse standoff voltage: 64V to 64.1V
• Clamping voltage: 103V (fixed)
• Bidirectional operation: 1 channel
• Zener type: Required
• Through-hole mounting: Required
• RoHS3 compliance: Required
• Operating temperature: -55°C to 175°C minimum

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Direct Replacement - DO-201 Package):

1.5KE75CA (Taiwan Semiconductor Corporation) is the recommended primary substitute. It maintains identical electrical specifications to the original part with active product status and full RoHS3 compliance. This part is available in high volume (25,200 pcs) and packaged in Tape & Reel format, supporting automated assembly processes.

1.5KE75CA-B (Littelfuse) provides an alternative from an established manufacturer with active status. Peak pulse current specification (14.8A) is within acceptable tolerance of the original 14.6A rating. This part is available in bulk packaging with 3,200 pcs in stock.

1.5KE75CA-G (Comchip Technology) offers compatibility with identical reverse standoff and clamping voltages. Note that the maximum operating temperature is specified at 150°C versus 175°C for the original part, which may be a limiting factor in high-temperature applications. This part is available in Tape & Box packaging with 1,135 pcs in stock.

Higher Power Alternatives (P600 Package - Layout Substitution Required):

5KP64CA (Littelfuse Inc.) and 5KP64CAE3/TR13 (Microchip Technology) provide equivalent voltage protection with significantly higher power dissipation capability (5000W versus 1500W) and peak pulse current (48.5A to 49.5A versus 14.6A). These parts require PCB layout modification to accommodate the larger P600 package but are suitable for applications requiring enhanced transient energy absorption.

5KP58CE3/TR13 (Microchip Technology) operates at a lower reverse standoff voltage (58V) and is not recommended as a direct substitute unless circuit design specifically permits lower voltage protection thresholds.

Not Recommended:

TP6KE75CA (Littelfuse Inc.) has significantly reduced power handling (600W) and peak pulse current (5.9A) compared to the original 1500W / 14.6A specification. This part is suitable only for lower-energy transient protection applications and should not be used as a substitute for the 1.5KE75CA-T in its original application context.

Frequently Asked Questions (FAQ)

Q: Can I use 1.5KE75CA as a direct replacement for 1.5KE75CA-T without PCB modifications?

A: Yes. The 1.5KE75CA maintains identical package format (DO-201), reverse standoff voltage (64.1V), breakdown voltage (71.3V), clamping voltage (103V), and operating temperature range (-55°C to 175°C). Peak pulse current is 15A versus 14.6A, which is within acceptable tolerance. No PCB layout changes are required.

Q: What is the difference between the 1.5KE series and 5KP series substitutes?

A: The 1.5KE series is rated for 1500W peak pulse power with 14.6A to 15A peak pulse current in the DO-201 package. The 5KP series is rated for 5000W peak pulse power with 48.5A to 49.5A peak pulse current in the larger P600 package. The 5KP series is suitable only when board layout permits package substitution and higher transient energy dissipation is required.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed are RoHS3 compliant and meet the same environmental compliance standards as the original 1.5KE75CA-T.

Q: Why is the 1.5KE75CA-G limited to 150°C maximum operating temperature?

A: The 1.5KE75CA-G from Comchip Technology specifies a maximum junction temperature of 150°C, compared to 175°C for other equivalents. This may be a design or qualification difference. For applications requiring full 175°C operation, use 1.5KE75CA or 1.5KE75CA-B instead.

Q: Can I use the TP6KE75CA as a substitute?

A: The TP6KE75CA is not recommended as a substitute. Although it maintains the same voltage ratings (64.1V reverse standoff, 103V clamping), it is rated for only 600W peak pulse power and 5.9A peak pulse current, compared to the original 1500W / 14.6A specification. This part is suitable only for lower-energy transient protection applications.

Q: What packaging formats are available for the recommended substitutes?

A: 1.5KE75CA is available in Tape & Reel (TR) format for automated assembly. 1.5KE75CA-B is available in Bulk packaging. 1.5KE75CA-G is available in Tape & Box (TB) format. All maintain the same DO-201 through-hole package case.

Q: Are there any REACH or ECCN compliance differences between substitutes?

A: All substitute parts are classified under ECCN EAR99 and HTSUS 8541.10.0080. The 1.5KE75CA from Taiwan Semiconductor Corporation is listed as REACH Unaffected, while the original 1.5KE75CA-T is REACH Affected. Littelfuse and Comchip parts are REACH Unaffected. Verify REACH status with your supplier for your specific application region.