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Vishay General Semiconductor - Diodes Division 1.5KA36HE3/51
- Part No.:
- 1.5KA36HE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA36HE3/51.pdf
- Description:
- TVS DIODE 29.1VWM 52VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:2,570
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Product details
Overview
1.5KA36HE3/51 from Vishay General Semiconductor is an automotive-grade unidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in power rails and signal lines. It delivers 1500 W peak pulse power (10/1000 µs), clamps at 52.0 V under 28.8 A peak pulse current, and operates up to +185 °C junction temperature-ideal for protecting MOSFETs and sensor interfaces in automotive engine control units.
For engineers reviewing the 1.5KA36HE3/51 datasheet, 1.5KA36HE3/51 pinout, 1.5KA36HE3/51 application, or 1.5KA36HE3/51 equivalent, key selection criteria include its AEC Q101 qualification, 32.4–39.6 V breakdown range, low 0.099 %/°C VBR tempco, and RoHS-compliant HE3 packaging with matte tin leads.
Technical Context
This TVS diode uses Vishay's patented PAR® construction for stable clamping under repetitive surge stress and high-temperature operation. Its unidirectional polarity enables precise reverse-biased protection of DC power inputs and I/O lines without forward conduction interference.
Rated for 200 A non-repetitive 8.3 ms surge (IFSM) and 6.5 W steady-state power dissipation on infinite heatsink, it maintains robust performance across -65 °C to +185 °C operating range-meeting stringent automotive reliability requirements per AEC Q101.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains high-energy transients from load dump or inductive switching |
| Breakdown Voltage (VBR) | 32.4 V min / 39.6 V max at 1 mA - defines precise clamping onset threshold |
| Clamping Voltage (VC) | 52.0 V at 28.8 A IPPM - limits protected circuit voltage during surge |
| Stand-off Voltage (VWM) | 29.1 V - maximum continuous reverse working voltage before leakage rises |
| Junction Temperature Range | -65 °C to +185 °C - supports under-hood automotive deployment |
| Surge Current (IFSM) | 200 A (8.3 ms half-sine) - withstands motor driver turn-off spikes |
| Tempco of VBR | 0.099 %/°C - ensures predictable voltage shift over temperature |
Pinout & Package
Package: Case Style 1.5KA - molded epoxy body with UL 94 V-0 rating; matte tin-plated leads compliant with J-STD-002 and JESD22-B102; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return) in unidirectional configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 24 V rail); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable clamping performance and reduced parameter drift under thermal cycling and surge stress |
| AEC Q101 qualification | Validated for automotive applications including engine control, transmission, and ADAS subsystems |
| 1500 W peak pulse rating | Provides margin against ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surges |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response time) |
| RoHS-compliant HE3 suffix | Meets JESD201 Class 2 whisker resistance and automotive reliability standards |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Power Stage |
|---|---|
Use Scenario: Protecting 24 V supply input of ECU microcontroller and CAN transceivers from load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and local regulator input. Use Value: Clamps to 52.0 V within nanoseconds, preventing damage to downstream 3.3 V/5 V logic while surviving 1500 W pulses. | Use Scenario: Safeguarding gate drivers and IGBTs in variable-frequency drives exposed to inductive kickback. IC Role / Device Role / Timing Role: Parallel-connected TVS on DC bus to absorb regenerative energy spikes. Use Value: Withstands 200 A surge (8.3 ms) and operates reliably at 185 °C ambient near power modules. |
| Automotive Sensor Interface Module | Telecom Power Supply Input |
Use Scenario: Shielding analog front-end of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on sensor supply and output lines. Use Value: Maintains <1 µA leakage at 29.1 V VWM, preserving signal integrity while offering 1500 W surge immunity. | Use Scenario: Front-end protection of AC/DC power supplies in base station equipment subject to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge suppression device on 48 V telecom rectifier output. Use Value: Delivers 52.0 V clamping at 28.8 A with 0.099 %/°C tempco-ensuring consistent protection across wide operating temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-E3/52 | 600 W rating, 40.0 V clamping at 15 A, DO-214AA package | Limited to lower-energy transients; not AEC Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 1500 W requirement |
| 1.5KE36A | Same 1500 W rating but TO-204AE (DO-4) package; no HE3 whisker compliance | Not rated for automotive under-hood use; higher thermal resistance | Choose only for non-automotive industrial designs where lead finish and AEC Q101 are not required |
Compared with SMBJ36A-E3/52 and 1.5KE36A, the 1.5KA36HE3/51 provides superior thermal capability (185 °C TJ), AEC Q101 validation, and JESD201 Class 2 whisker resistance-making it the sole option qualified for critical automotive power rail protection.
Availability
1.5KA36HE3/51 is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drives, telecom power supplies, and sensor interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1.5KA36HE3/51 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and high-performance applications.
The 1.5KA series is part of Vishay's automotive TVS portfolio, engineered specifically for AEC Q101-compliant transient suppression in harsh environments-including under-hood, powertrain, and ADAS systems.
FAQ
What is the clamping voltage of the 1.5KA36HE3/51 under peak pulse conditions?
The 1.5KA36HE3/51 has a maximum clamping voltage (VC) of 52.0 V at 28.8 A peak pulse current (IPPM) using a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures protected circuits remain below critical overvoltage thresholds during surge events.
Is the 1.5KA36HE3/51 qualified for automotive applications?
Yes, the 1.5KA36HE3/51 is AEC Q101 qualified and designated as high-reliability automotive grade (Base P/NHE3). It meets rigorous stress testing for temperature cycling, humidity, mechanical shock, and surge endurance-making it suitable for engine control, transmission, and ADAS systems.
What does the HE3 suffix indicate on the 1.5KA36HE3/51?
The HE3 suffix on the 1.5KA36HE3/51 denotes RoHS compliance, high-reliability construction, and qualification to JESD201 Class 2 for tin whisker resistance. It also confirms matte tin-plated leads solderable per J-STD-002 and JESD22-B102 standards.
How does the 1.5KA36HE3/51 differ from standard 1.5KE series TVS diodes?
The 1.5KA36HE3/51 differs from the 1.5KE36A by its AEC Q101 qualification, enhanced thermal capability (185 °C max TJ vs. 175 °C), HE3 whisker-resistant lead finish, and tighter VBR tolerance (±10 % vs. ±5 % for 1.5KE). Its Case Style 1.5KA also offers improved mechanical robustness for automotive vibration environments.
Can the 1.5KA36HE3/51 be used in bidirectional configurations?
No, the 1.5KA36HE3/51 is specified for uni-directional polarity only, as confirmed in the Vishay datasheet Document Number 88300. For bidirectional protection, engineers must select a dedicated bi-directional variant such as the 1.5KA36CAHE3/51-or pair two unidirectional devices in anti-parallel configuration with appropriate layout considerations.
1.5KA36HE3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 29.1V
- Voltage - Breakdown (Min):
- 32.4V
- Voltage - Clamping (Max) @ Ipp:
- 52V
- Current - Peak Pulse (10/1000µs):
- 28.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KA
1.5KA36HE3/51 FAQ
1.How can I place an order for 1.5KA36HE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA36HE3/51 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1.5KA36HE3/51 reliable?
The price and inventory of 1.5KA36HE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA36HE3/51 is usually 5 days.
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Once your 1.5KA36HE3/51 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1.5KA36HE3/51?
For technical support, including 1.5KA36HE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA36HE3/51 requirements.
6.How does Aetrix verify that 1.5KA36HE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KA36HE3/51 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1.5KA36HE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KA36HE3/51?
All 1.5KA36HE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA36HE3/51, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1.5KA36HE3/51 part is unused and in its original packaging.
Return procedure for 1.5KA36HE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA36HE3/51 Tags
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