1.5KE16A-T Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 1.5KE16A-T is a unidirectional transient voltage suppressor diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in through-hole applications. This component features a 13.6V reverse standoff voltage with a 22.5V maximum clamping voltage and 1500W peak pulse power rating. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

1.5KE16A-T

Diodes IncorporatedIn Stock: 9381.5KE16A-T Datasheet

Current PartRFQ

1.5KE16A

Taiwan Semiconductor CorporationIn Stock: 3001841.5KE16A Datasheet

DirectRFQ

1V5KE16A

Fairchild SemiconductorIn Stock: 21491V5KE16A Datasheet

DirectRFQ

1.5KE16A-B

Littelfuse Inc.In Stock: 8341.5KE16A-B Datasheet

MFR RecommendedRFQ

1.5KE16A-G

Comchip TechnologyIn Stock: 9221.5KE16A-G Datasheet

MFR RecommendedRFQ

1.5KE16A-HF

Comchip TechnologyIn Stock: 10501.5KE16A-HF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1.5KE16A-T is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 13.6V
• Voltage - Breakdown (Min): 15.2V
• Voltage - Clamping (Max) @ Ipp: 22.5V
• Current - Peak Pulse (10/1000µs): 67A ±5% tolerance
• Power - Peak Pulse: 1500W (1.5kW)
• Unidirectional Channels: 1
• Mounting Type: Through Hole
• Package / Case: DO-201AA, DO-27, or Axial equivalent

All substitute parts listed maintain these core electrical specifications within acceptable engineering tolerances. Substitute parts are grouped by manufacturer and product status (Active vs. Obsolete), with preference given to active production parts from established component manufacturers.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Recommended for New Designs): The 1.5KE16A manufactured by Taiwan Semiconductor Corporation is the preferred substitute. This part maintains full electrical equivalence with the 1.5KE16A-T, offers active product status with established supply chain availability, and carries ROHS3 compliance certification. Peak pulse current specification of 70A provides a 4.5% margin above the original 67A requirement.

Secondary Substitutes (Equivalent Performance): The 1.5KE16A-B (Littelfuse Inc.), 1V5KE16A (Fairchild Semiconductor), 1.5KE16A-G (Comchip Technology), and 1.5KE16A-HF (Comchip Technology) all provide electrical equivalence within acceptable tolerances. All secondary substitutes maintain active product status and ROHS3 compliance. Peak pulse current specifications range from 66.67A to 67.6A, representing ±0.5% variation from the original specification.

Temperature Consideration: The 1.5KE16A-G and 1.5KE16A-HF from Comchip Technology specify a maximum operating temperature of 150°C, compared to 175°C for the original part and other substitutes. Applications requiring operation above 150°C junction temperature should select alternatives with the extended 175°C rating.

Package Compatibility: All substitute parts are available in DO-201AA, DO-27, or axial package configurations compatible with through-hole PCB designs. The 1V5KE16A is specified in DO-201AD package, which maintains mechanical and electrical compatibility with standard DO-201 footprints.

Frequently Asked Questions (FAQ)

Q: Can I use the 1.5KE16A-T substitute parts interchangeably in my existing design?

A: Yes. All listed substitute parts maintain identical voltage specifications (13.6V reverse standoff, 15.2V breakdown minimum, 22.5V clamping maximum) and equivalent peak pulse current ratings within ±5% tolerance. Through-hole mounting and axial package configurations are mechanically compatible with existing PCB layouts designed for the 1.5KE16A-T.

Q: What is the difference between the 1.5KE16A from Taiwan Semiconductor and the 1.5KE16A-B from Littelfuse?

A: Both parts are electrically equivalent with identical voltage and power specifications. The primary differences are manufacturer, product series designation, and peak pulse current specification (70A vs. 67.6A). Taiwan Semiconductor's 1.5KE16A offers slightly higher current capacity. Both maintain active product status and ROHS3 compliance.

Q: Why do some substitute parts specify 150°C maximum operating temperature instead of 175°C?

A: The 1.5KE16A-G and 1.5KE16A-HF from Comchip Technology are rated to 150°C junction temperature, while the original 1.5KE16A-T and most substitutes are rated to 175°C. This represents a design difference between manufacturers. For applications requiring sustained operation above 150°C, select parts with the 175°C rating: 1.5KE16A (Taiwan Semi), 1V5KE16A (Fairchild), 1.5KE16A-B (Littelfuse), or the original 1.5KE16A-T.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed carry ROHS3 compliance certification except the 1V5KE16A from Fairchild Semiconductor, for which compliance status is not specified in available documentation. For applications requiring verified ROHS3 compliance, select from: 1.5KE16A (Taiwan Semi), 1.5KE16A-B (Littelfuse), 1.5KE16A-G (Comchip), or 1.5KE16A-HF (Comchip).

Q: What is the difference between DO-201AA and DO-201AD packages?

A: Both DO-201AA and DO-201AD are axial through-hole packages with identical electrical and mechanical compatibility for standard PCB designs. The designations reflect minor manufacturing variations between component suppliers. All listed substitute parts are compatible with existing DO-201 footprints.

Q: Can I substitute the 1.5KE16A-T with a part rated for higher voltage or current?

A: No. Substitution must maintain the specified voltage parameters (13.6V reverse standoff, 15.2V breakdown, 22.5V clamping) and current rating (67A ±5%). Using parts with different voltage ratings will alter circuit protection characteristics and may result in inadequate overvoltage suppression or component damage.