1.5KE13 Transient Voltage Suppressor (TVS) Equivalent & Substitute Parts

Part Overview

The 1.5KE13 is a unidirectional Zener-type transient voltage suppressor manufactured by Littelfuse, designed for general-purpose overvoltage protection in through-hole applications. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 1.5KE13 operates across a temperature range of -55°C to 175°C and meets ROHS3 compliance requirements. Substitute parts must maintain electrical compatibility within the specified voltage and current parameters while supporting the same through-hole mounting configuration.

Substiute Parts

1.5KE13

LittelfuseIn Stock: 11021.5KE13 Datasheet

Current PartRFQ

1.5KE13A

Taiwan Semiconductor CorporationIn Stock: 3004631.5KE13A Datasheet

DirectRFQ

1.5KE13A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 83181.5KE13A-E3/54 Datasheet

MFR RecommendedRFQ

1.5KE13A-HF

Comchip TechnologyIn Stock: 9791.5KE13A-HF Datasheet

MFR RecommendedRFQ

5KP11AE3/TR13

Microchip TechnologyIn Stock: 11035KP11AE3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1.5KE13 are selected based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): 11.1V nominal
• Voltage - Clamping (Max) @ Ipp: 18.2V to 19.11V range
• Current - Peak Pulse (10/1000µs): 82.4A to 86A for 1500W devices; 275A for 5000W devices
• Power - Peak Pulse: 1500W or higher
• Mounting Type: Through Hole
• Package / Case: DO-201AA, DO-27, or P600 Axial configurations
• Type: Zener unidirectional
• Operating Temperature: -55°C minimum to 150°C or higher

Substitutes are grouped into two categories: direct 1500W equivalents (1.5KE13A, 1.5KE13A-E3/54, 1.5KE13A-HF) and higher-power 5000W alternative (5KP11AE3/TR13). All substitute parts maintain the same reverse standoff voltage and clamping characteristics within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

For direct replacement of the obsolete 1.5KE13, the 1.5KE13A (Taiwan Semiconductor Corporation) is the primary equivalent. This part maintains identical reverse standoff voltage (11.1V), comparable clamping voltage (18.2V), and equivalent power rating (1500W) while offering active product status and full temperature range support (-55°C to 175°C). All three 1500W alternatives (1.5KE13A, 1.5KE13A-E3/54, 1.5KE13A-HF) meet ROHS3 compliance and MSL Level 1 requirements.

The 1.5KE13A-HF (Comchip Technology) operates within a reduced temperature range (-55°C to 150°C) and should be selected only when the upper temperature limit of 150°C is acceptable for the application. The 1.5KE13A-E3/54 (Vishay) is supplied in Cut Tape packaging and is suitable for automated assembly processes.

The 5KP11AE3/TR13 (Microchip Technology) represents a higher-power alternative with 5000W peak pulse capability and 275A peak current. This part is appropriate only when increased transient energy absorption is required. The P600 package differs from the DO-201AA configuration and requires mechanical redesign consideration.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and EAR99 export classification consistent with the original 1.5KE13.

Frequently Asked Questions (FAQ)

Q: Can the 1.5KE13A directly replace the 1.5KE13 without circuit modification?

A: Yes. The 1.5KE13A maintains the same reverse standoff voltage (11.1V), comparable clamping voltage (18.2V), and identical power rating (1500W). Both parts support through-hole mounting in DO-201AA and DO-27 packages. No circuit modification is required.

Q: What is the difference between the 1500W and 5000W substitute options?

A: The 1.5KE13A series (1500W) provides direct electrical equivalence to the original 1.5KE13. The 5KP11AE3/TR13 (5000W) offers higher transient energy absorption capability with 275A peak current versus 82-86A for 1500W devices. The 5000W option requires mechanical redesign due to P600 package configuration and should be selected only when increased protection margin is required.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (1.5KE13A, 1.5KE13A-E3/54, 1.5KE13A-HF, 5KP11AE3/TR13) are ROHS3 compliant with MSL Level 1 rating, matching the original 1.5KE13 environmental specifications.

Q: What is the temperature limitation of the 1.5KE13A-HF?

A: The 1.5KE13A-HF operates from -55°C to 150°C, compared to -55°C to 175°C for other 1500W alternatives. This part should be selected only when the application maximum temperature does not exceed 150°C.

Q: Does packaging affect the substitution decision?

A: For 1500W equivalents, all parts support DO-201AA and DO-27 axial packages with identical through-hole mounting. The 5KP11AE3/TR13 uses P600 package and requires mechanical redesign. Packaging selection depends on PCB layout compatibility and assembly process requirements.

Q: What is the voltage tolerance range for substitute selection?

A: Substitute parts must maintain reverse standoff voltage within 11V to 11.1V and clamping voltage within 18.2V to 19.11V. All listed substitutes meet these criteria. Breakdown voltage (Min) ranges from 12.2V to 12.4V across all options, which is acceptable for general-purpose overvoltage protection applications.