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Vishay General Semiconductor - Diodes Division 1.5KA36AHE3/51
- Part No.:
- 1.5KA36AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA36AHE3/51.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:6,145
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Product details
Overview
1.5KA36AHE3/51 from Vishay General Semiconductor is a unidirectional automotive-grade transient voltage suppressor (TVS) diode in the 1.5KA case style, rated for 1500 W peak pulse power (10/1000 µs), 34.2–37.8 V breakdown voltage (VBR), and 30.1 A peak pulse current (IPPM). It operates up to +185 °C junction temperature and is AEC-Q101 qualified for engine control units and automotive sensor protection.
For engineers reviewing the 1.5KA36AHE3/51 datasheet, 1.5KA36AHE3/51 pinout, 1.5KA36AHE3/51 application, or 1.5KA36AHE3/51 equivalent, key selection criteria include clamping voltage (49.9 V at IPPM), low incremental surge resistance, RoHS-compliant matte tin leads, and JESD201 Class 2 whisker resistance - critical for high-reliability automotive transients.
Technical Context
This TVS diode uses patented PAR® construction for stable clamping under repetitive surge stress and features unidirectional polarity with cathode indicated by color band. Its 1.5KA molded epoxy package meets UL 94 V-0 and supports soldering at 260 °C for 40 s.
Designed for automotive environments, it delivers 6.5 W steady-state power dissipation on infinite heatsink at TL = 75 °C and withstands 200 A non-repetitive forward surge (8.3 ms half-sine), with maximum forward voltage of 3.5 V at 100 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V - defines minimum voltage at which device enters avalanche conduction under 10 mA test current |
| VC @ IPPM | 49.9 V - clamping voltage during 30.1 A 10/1000 µs transient, limiting downstream IC stress |
| PPPM | 1500 W - peak transient energy handling capability per standard 10/1000 µs waveform |
| TJ max. | +185 °C - enables operation in under-hood automotive locations without derating |
| VWM | 30.8 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| IFSM | 200 A - surge current rating for 8.3 ms half-sine, supporting load-dump immunity |
Pinout & Package
Package: 1.5KA molded epoxy case (UL 94 V-0), axial-leaded, cathode marked by color band. Leads are matte tin plated, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to system ground in unidirectional TVS configuration | Low-impedance path for surge current return during clamping; must be routed with minimal inductance |
| Cathode | Protected line connection; marked by color band | Connected to signal/power line being protected; avalanche conduction initiates here during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables consistent clamping performance across temperature and lifetime, reducing parameter drift in automotive thermal cycles |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per stress test requirements |
| 1500 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 5a/b (load dump) and IEC 61000-4-5 surge immunity standards for 12 V systems |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth under thermal/humidity stress, ensuring long-term reliability in sealed connectors |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients (<1 ns rise time), improving protection margin for sensitive gate drivers |
Applications
| Engine Control Unit (ECU) Power Input Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects ECU 12 V supply rail against load dump transients (up to 60 V, 400 ms) and jump-start spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage. Use Value: Clamps to 49.9 V at 30.1 A, preventing damage to upstream fuse boxes and downstream LDOs while maintaining AEC-Q101 compliance. | Use Scenario: Shields analog outputs of pressure/temperature sensors from inductive switching noise in HVAC or brake modules. IC Role / Device Role / Timing Role: TVS mounted at connector interface, shunting transients before signal conditioning amplifiers. Use Value: 30.8 V stand-off voltage ensures no interference with 5 V or 3.3 V sensor output levels; 185 °C rating supports under-dash mounting. |
| Body Control Module (BCM) LIN Bus Protection | ADAS Camera Power Rail Protection |
Use Scenario: Guards LIN transceiver VCC pins against ESD and relay coil flyback in door module applications. IC Role / Device Role / Timing Role: Unidirectional TVS placed directly at transceiver power pin, with short trace to ground plane. Use Value: 3.5 V forward voltage at 100 A ensures minimal voltage drop during surge, preserving bus timing integrity during fault events. | Use Scenario: Safeguards 12 V input to image sensor power management ICs in rear-view or surround-view cameras. IC Role / Device Role / Timing Role: Primary TVS on main camera board power entry, coordinated with secondary ceramic capacitor filtering. Use Value: 1500 W rating handles combined ISO 16750-2 pulse 4 (reverse battery) and pulse 5a (load dump), extending field life beyond 15 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36AHE3/52 | Lower peak pulse power (600 W), smaller SMB package (3.5 mm × 4.5 mm), same VBR range (34.2–37.8 V) | Not AEC-Q101 qualified; suited for consumer/industrial boards where space is constrained but automotive reliability not required | Select when board area is limited and thermal mass is sufficient to dissipate lower PPPM without derating |
| 1.5KE36A | Same 1.5KA case style and 1500 W rating, but legacy JEDEC TO-204AE package; no HE3 suffix (not JESD201 Class 2 whisker tested) | Lacks automotive qualification and modern lead finish; used in industrial power supplies with longer qualification timelines | Select only for cost-sensitive non-automotive designs where whisker risk and AEC-Q101 are not mandated |
Compared with SMBJ36AHE3/52 and 1.5KE36A, the 1.5KA36AHE3/51 uniquely combines AEC-Q101 qualification, JESD201 Class 2 whisker resistance, and 1.5KA package thermal robustness - making it the sole choice for safety-critical automotive power rails requiring zero field failures over 15-year service life.
Availability
1.5KA36AHE3/51 is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, body control modules, and automotive sensor interfaces requiring stable component supply across extended temperature and lifecycle demands.
Supply support for 1.5KA36AHE3/51 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 high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The 1.5KA series was engineered specifically for automotive transient suppression, emphasizing AEC-Q101 qualification, high-temperature stability (TJ = 185 °C), and robust PAR® construction to meet stringent OEM requirements for under-hood electronics.
FAQ
What is the clamping voltage of the 1.5KA36AHE3/51 at its rated peak pulse current?
The 1.5KA36AHE3/51 has a maximum clamping voltage (VC) of 49.9 V when subjected to its rated peak pulse current of 30.1 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components such as microcontrollers and power management ICs in automotive applications.
Is the 1.5KA36AHE3/51 qualified for automotive use?
Yes, the 1.5KA36AHE3/51 is AEC-Q101 qualified and designated as an automotive-grade part (HE3 suffix). It undergoes rigorous stress testing including temperature cycling, humidity bias, and mechanical shock, and is rated for operation from –65 °C to +185 °C junction temperature - meeting OEM requirements for engine bay and chassis-mounted electronics.
What does the HE3 suffix indicate on the 1.5KA36AHE3/51?
The HE3 suffix on the 1.5KA36AHE3/51 denotes RoHS-compliant, high-reliability construction with matte tin-plated leads that pass JESD201 Class 2 whisker testing. It also confirms compliance with UL 94 V-0 flammability rating and solderability per J-STD-002, distinguishing it from non-automotive variants like the base 1.5KA36A.
Can the 1.5KA36AHE3/51 be used in bidirectional configurations?
No, the 1.5KA36AHE3/51 is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts in reverse avalanche mode to clamp positive transients on the cathode side and blocks forward voltage up to 3.5 V at 100 A. For bidirectional protection, two devices must be connected in series opposing or a dedicated bidirectional TVS such as SMAJ36A must be selected.
What is the standoff voltage (VWM) of the 1.5KA36AHE3/51, and why is it important?
The 1.5KA36AHE3/51 has a maximum working standoff voltage (VWM) of 30.8 V, meaning it remains non-conductive below this level with leakage <1 µA at 25 °C. This ensures compatibility with nominal 24 V automotive systems (where 30.8 V provides adequate margin above 28.5 V max battery voltage) while avoiding false triggering during normal operation.
1.5KA36AHE3/51 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30.1A
- 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
1.5KA36AHE3/51 FAQ
1.How can I place an order for 1.5KA36AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA36AHE3/51 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 1.5KA36AHE3/51 reliable?
The price and inventory of 1.5KA36AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA36AHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KA36AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA36AHE3/51 transactions.
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4.How is shipping managed for 1.5KA36AHE3/51?
1.5KA36AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA36AHE3/51 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 1.5KA36AHE3/51?
For technical support, including 1.5KA36AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA36AHE3/51 requirements.
6.How does Aetrix verify that 1.5KA36AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KA36AHE3/51 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 1.5KA36AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KA36AHE3/51?
All 1.5KA36AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA36AHE3/51, 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 1.5KA36AHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KA36AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA36AHE3/51 Tags
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