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1.5KE36CA-T Transient Voltage Suppressor Diode - Equivalent & Substitute Parts
Part Overview
The 1.5KE36CA-T is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in through-hole applications. This component features a 30.8V reverse standoff voltage, 49.9V maximum clamping voltage, and 1500W peak pulse power rating in a DO-201 axial package. The part is currently obsolete, making equivalent substitutes from active manufacturers necessary for new designs and ongoing production requirements.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 30.8 | V |
| Voltage - Breakdown (Min) | 34.2 | V |
| Voltage - Clamping (Max) @ Ipp | 49.9 | V |
| Current - Peak Pulse (10/1000µs) | 30 | A |
| Power - Peak Pulse | 1500 | W |
| Operating Temperature Range | -55 to 175 | °C (TJ) |
| Mounting Type | Through Hole | — |
| Package / Case | DO-201AA, DO-27, Axial | — |
| Type | Zener | — |
| Bidirectional Channels | 1 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution eligibility for the 1.5KE36CA-T is determined by the following critical parameters:
- Voltage - Reverse Standoff (Typ): 30.8V
- Voltage - Clamping (Max) @ Ipp: 49.9V
- Current - Peak Pulse (10/1000µs): 30A minimum
- Power - Peak Pulse: 1500W minimum
- Mounting Type: Through Hole
- Operating Temperature Range: -55°C to 175°C minimum
- Package compatibility: DO-201 series axial packages
Substitute parts are grouped into two categories:
Category 1: Direct Voltage & Power Rating Equivalents (1500W, 30.8V standoff) These parts maintain identical voltage specifications and 1500W power rating with compatible DO-201 series packaging. Peak pulse current may vary within acceptable tolerance (29-30.5A).
Category 2: Higher Power Rating Alternatives (5000W, Similar Voltage Range) These parts provide increased power dissipation capability (5000W) with voltage standoff specifications in the 26-30V range and significantly higher peak pulse current (100-107A). These are suitable only when higher transient energy absorption is required and package size permits.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Voltage - Reverse Standoff (Typ) | Voltage - Clamping (Max) @ Ipp | Current - Peak Pulse (10/1000µs) | Power - Peak Pulse | Operating Temp Range | Package / Case |
|---|---|---|---|---|---|---|---|---|
| 1.5KE36CA-T | Diodes Incorporated | Obsolete | 30.8V | 49.9V | 30A | 1500W | -55 to 175°C | DO-201AA, DO-27, Axial |
| 1V5KE36CA | Taiwan Semiconductor Corporation | Active | 30.8V | 49.9V | 30.1A | 1500W | -55 to 175°C | DO-201AD, Axial |
| 1.5KE36CA | Good-Ark Semiconductor | Active | 30.8V | 49.9V | 30.1A | 1500W | -55 to 175°C | DO-201AE, Axial |
| 1.5KE36CA-B | Littelfuse | Active | 30.8V | 49.9V | 30.5A | 1500W | -55 to 175°C | DO-201AA, DO-27, Axial |
| 1.5KE36CA-G | Comchip Technology | Active | 30.8V | 49.9V | 30.06A | 1500W | -55 to 150°C | DO-201AA, DO-27, Axial |
| 1.5KE36CA-TP | Micro Commercial Co | Active | 30.8V | 49.9V | — | 1500W | -55 to 175°C | DO-201AE, Axial |
| 1.5KE39CA | Taiwan Semiconductor Corporation | Active | 33.3V | 53.9V | 29A | 1500W | -55 to 150°C | DO-201AA, DO-27, Axial |
| 5KP30CAE3/TR13 | Microchip Technology | Active | 30V | 48.4V | 103A | 5000W | -55 to 175°C | P600, Axial |
| 5KP28CE3/TR13 | Microchip Technology | Active | 28V | 50V | 100A | 5000W | -55 to 175°C | P600, Axial |
| 5KP26CE3/TR13 | Microchip Technology | Active | 26V | 46.6V | 107A | 5000W | -55 to 175°C | P600, Axial |
Engineering Selection Recommendations
Primary Substitutes (Direct Equivalents)
For applications requiring exact voltage and power specifications with active product status, select from: 1V5KE36CA (Taiwan Semiconductor Corporation), 1.5KE36CA (Good-Ark Semiconductor), 1.5KE36CA-B (Littelfuse), or 1.5KE36CA-TP (Micro Commercial Co). All maintain 30.8V reverse standoff voltage, 49.9V clamping voltage, and 1500W power rating. These parts are ROHS3 compliant and carry unlimited moisture sensitivity rating (MSL 1).
The 1.5KE36CA-B from Littelfuse offers the highest peak pulse current specification (30.5A) and maintains full temperature range operation (-55 to 175°C). The 1V5KE36CA from Taiwan Semiconductor Corporation provides equivalent performance with active status and 2215 units in stock.
Secondary Substitute (Higher Voltage Rating)
The 1.5KE39CA from Taiwan Semiconductor Corporation operates at 33.3V reverse standoff and 53.9V clamping voltage. This part is suitable only when circuit design permits higher voltage thresholds. Operating temperature range is limited to -55 to 150°C.
Higher Power Alternatives (5000W Rating)
The 5KP series from Microchip Technology (5KP30CAE3/TR13, 5KP28CE3/TR13, 5KP26CE3/TR13) provides 5000W peak pulse power with significantly higher peak pulse current (100-107A). These parts use P600 package format and are suitable only when circuit board layout accommodates larger package dimensions and higher transient energy absorption is required. Voltage standoff ranges from 26V to 30V.
All recommended substitutes carry ROHS3 compliance and EAR99 export classification matching the original part.
Frequently Asked Questions (FAQ)
Q: Can I use 1.5KE39CA as a direct replacement for 1.5KE36CA-T?
A: The 1.5KE39CA operates at higher voltage thresholds (33.3V standoff, 53.9V clamping) compared to the original specification (30.8V standoff, 49.9V clamping). This part is not a direct equivalent and should only be used if circuit design permits higher voltage operation. Additionally, the operating temperature range is limited to -55 to 150°C versus the original -55 to 175°C.
Q: What is the difference between DO-201 package variants (DO-201AA, DO-201AD, DO-201AE)?
A: All variants are axial through-hole packages compatible with standard PCB mounting. DO-201AA, DO-201AD, and DO-201AE represent manufacturer-specific package designations with identical electrical performance and mechanical compatibility. Selection depends on PCB design and component availability.
Q: Can I substitute a 5KP series part for the 1.5KE36CA-T?
A: The 5KP series provides higher power dissipation (5000W versus 1500W) and significantly higher peak pulse current (100-107A versus 30A). These parts use larger P600 packages and are suitable only when circuit design requires increased transient energy absorption and PCB layout accommodates the larger package footprint. Voltage specifications are comparable (26-30V standoff range).
Q: Are all substitute parts RoHS compliant?
A: Yes, all listed substitute parts carry ROHS3 compliance certification, matching the original 1.5KE36CA-T specification.
Q: What is the significance of the MSL rating?
A: All parts listed carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture control requirements during storage, handling, or assembly. This matches the original part specification.
Q: Which substitute offers the best inventory availability?
A: The 1.5KE36CA from Good-Ark Semiconductor provides the highest inventory level at 14,729 units in stock, followed by 1.5KE39CA from Taiwan Semiconductor Corporation at 20,100 units. Both are active products with immediate availability.
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