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Vishay General Semiconductor - Diodes Division 1.5KA36AHE3/54
- Part No.:
- 1.5KA36AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KA36AHE3/54.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC 1.5KA
- Quantity:
- Payment:
- Shipping:
Inventory:8,191
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Product details
Overview
1.5KA36AHE3/54 from Vishay General Semiconductor is an automotive-grade unidirectional transient voltage suppressor (TVS) diode with 1500 W peak pulse power (10/1000 µs), 34.2–37.8 V breakdown voltage, and AEC-Q101 qualification. It clamps transients to ≤49.9 V at 30.1 A, operates from −65 °C to +185 °C, and protects MOSFETs and sensor signal lines in automotive powertrain control units.
For engineers reviewing the 1.5KA36AHE3/54 datasheet, 1.5KA36AHE3/54 pinout, 1.5KA36AHE3/54 application, or 1.5KA36AHE3/54 equivalent, key selection criteria include its 30.8 V stand-off voltage, 1.0 µA max reverse leakage at TJ = 150 °C, 0.099 %/°C VBR tempco, and RoHS-compliant HE3 packaging for high-reliability automotive environments.
Technical Context
This TVS diode uses Vishay's patented PAR® construction for stable clamping under high-temperature stress and repetitive surge conditions. Its unidirectional polarity and low incremental surge resistance enable fast response (<1 ns) and precise overvoltage protection during load dump or inductive switching events.
The device is rated for 200 A non-repetitive forward surge (8.3 ms half-sine) and maintains 6.5 W power dissipation on infinite heatsink at TL = 75 °C. Its junction temperature range (−65 °C to +185 °C) supports under-hood automotive deployment without derating penalties up to 150 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V - Ensures reliable triggering above system operating voltage while avoiding false trips |
| VWM | 30.8 V - Maximum continuous reverse working voltage compatible with 24 V automotive systems |
| VC @ IPPM | 49.9 V - Clamped voltage at 30.1 A peak pulse, limiting stress on downstream ICs |
| PPPM | 1500 W - Handles ISO 7637-2 Pulse 5a load-dump surges without failure |
| TJ max. | +185 °C - Enables placement near high-heat sources like engine controllers or DC-DC converters |
| IFSM | 200 A - Withstands short-circuit fault currents in 24 V battery-fed circuits |
| Tempco of VBR | 0.099 %/°C - Predictable voltage shift across temperature, critical for precision protection margins |
Pinout & Package
Package: Case Style 1.5KA - Axial-leaded, molded epoxy body (UL 94 V-0), matte tin-plated leads compliant with J-STD-002 and JESD22-B102. Cathode denoted by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or low-side return path during transient suppression |
| Cathode | Current exit point in forward bias; marked with band | Connected to protected line (e.g., sensor supply or CAN bus) to clamp positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR® construction | Enables stable clamping performance across 1000+ surge cycles without parameter drift |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive under-hood use including thermal cycling, humidity, and mechanical shock |
| 10/1000 µs waveform rating | Matches ISO 7637-2 and SAE J1113-11 test profiles for real-world load-dump immunity |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., relay coil de-energization) |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in long-life automotive modules (>15-year service life) |
Applications
| Engine Control Unit (ECU) Power Input Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 24 V supply rail of diesel ECU against ISO 7637-2 Pulse 5a load-dump transients up to 60 V. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive overvoltage spikes before they reach DC-DC regulators and microcontrollers. Use Value: Limits peak voltage to 49.9 V at 30.1 A, preserving regulator input rating and preventing latch-up in 3.3 V logic cores. | Use Scenario: Shields analog output lines of exhaust gas temperature (EGT) sensors from inductive coupling in adjacent harnesses. IC Role / Device Role / Timing Role: Fast-response TVS absorbs sub-100 ns transients induced by solenoid actuation near sensor cables. Use Value: Clamping within <1 ns prevents ADC saturation and preserves 12-bit measurement accuracy over full −40 °C to +125 °C range. |
| Body Control Module (BCM) LIN Bus Protection | Electric Power Steering (EPS) Motor Driver Protection |
Use Scenario: Guards LIN transceiver I/O pins against ESD and cable discharge events in door module assemblies. IC Role / Device Role / Timing Role: Stand-off voltage (30.8 V) exceeds LIN bus operating range (0–12 V), enabling transparent operation during normal signaling. Use Value: 1.0 µA leakage at 150 °C ensures no signal distortion or bus timeout errors in hot-climate deployments. | Use Scenario: Suppresses flyback voltage spikes from H-bridge MOSFETs driving 12 V EPS motors during PWM commutation. IC Role / Device Role / Timing Role: Mounted across motor terminals to absorb inductive energy and prevent MOSFET avalanche failure. Use Value: 200 A IFSM rating handles worst-case short-circuit current surges without bond wire fusing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36AHE3/52 | Same VBR range (34.2–37.8 V), but 600 W PPPM, DO-214AA package, lower IPPM (16.7 A) | Not AEC-Q101 qualified; suitable for industrial, not automotive under-hood use | Select when space-constrained PCB layout requires SMD mounting and automotive qualification is unnecessary |
| 1.5KE36A | Same VBR and PPPM, but standard reliability grade (no HE3 suffix), 175 °C TJ max, no JESD201 whisker test | Lacks AEC-Q101 validation and high-temp reliability data for automotive production | Acceptable for cost-sensitive consumer or industrial designs where extended temperature margin is not required |
Compared with SMBJ36AHE3/52 and 1.5KE36A, the 1.5KA36AHE3/54 delivers higher surge robustness (1500 W vs. 600 W or same 1500 W without automotive validation), guaranteed 185 °C junction capability, and traceable whisker-resistant plating-making it the only choice for Tier-1 automotive power electronics requiring zero-failure field performance.
Availability
1.5KA36AHE3/54 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, electric power steering systems, and ADAS camera power supplies requiring stable component supply across multi-year production cycles.
Supply support for 1.5KA36AHE3/54 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, combining AEC-Q101 qualification, high-temperature stability, and robust PAR® construction to meet stringent OEM requirements for under-hood electronics protection.
FAQ
What is the maximum clamping voltage of the 1.5KA36AHE3/54 at its rated peak pulse current?
The 1.5KA36AHE3/54 has a maximum clamping voltage (VC) of 49.9 V at its rated peak pulse current (IPPM) of 30.1 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed per Vishay Document Number 88300 and defines the upper voltage limit imposed on protected circuitry during surge events. The 1.5KA36AHE3/54 achieves this clamping performance while maintaining low incremental surge resistance, ensuring minimal overshoot beyond VC.
Is the 1.5KA36AHE3/54 qualified for automotive applications?
Yes, the 1.5KA36AHE3/54 is AEC-Q101 qualified and designated as high-reliability/automotive grade per its HE3 suffix. It undergoes rigorous testing for temperature cycling, humidity, mechanical shock, and surge endurance per automotive standards. The 1.5KA36AHE3/54 is explicitly intended for under-hood use in engine control units, body control modules, and other safety-critical vehicle subsystems where long-term reliability at elevated temperatures is mandatory.
What does the "HE3" suffix indicate on the 1.5KA36AHE3/54?
The "HE3" suffix on the 1.5KA36AHE3/54 denotes RoHS compliance, high-reliability construction, and AEC-Q101 qualification. It also confirms that the device meets JESD201 Class 2 whisker resistance requirements and uses matte tin-plated leads solderable per J-STD-002 and JESD22-B102. The 1.5KA36AHE3/54 HE3 variant is distinct from standard-grade equivalents and is traceable to automotive-grade material lots and process controls.
What is the stand-off voltage (VWM) of the 1.5KA36AHE3/54, and why is it important?
The stand-off voltage (VWM) of the 1.5KA36AHE3/54 is 30.8 V, representing the maximum continuous reverse voltage the device can withstand without significant conduction. This value ensures compatibility with nominal 24 V automotive systems while providing sufficient margin above normal operating voltage to prevent leakage-induced power loss or false triggering. For the 1.5KA36AHE3/54, VWM is tightly controlled to maintain signal integrity on protected lines such as sensor outputs or LIN bus interfaces.
How does the 1.5KA36AHE3/54 differ from the standard 1.5KA36A part?
The 1.5KA36AHE3/54 differs from the base 1.5KA36A by its HE3 suffix, which adds AEC-Q101 qualification, JESD201 Class 2 whisker resistance, RoHS compliance, and enhanced process controls for automotive production. While both share identical electrical parameters (VBR, VC, PPPM), only the 1.5KA36AHE3/54 carries full automotive reliability documentation and is approved for use in certified vehicle platforms. The 1.5KA36AHE3/54 is the version shipped in 13" paper tape and reel (package code 54) for automated assembly.
1.5KA36AHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- 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
1.5KA36AHE3/54 FAQ
1.How can I place an order for 1.5KA36AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KA36AHE3/54 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 1.5KA36AHE3/54 reliable?
The price and inventory of 1.5KA36AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KA36AHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KA36AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KA36AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KA36AHE3/54?
1.5KA36AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KA36AHE3/54 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 1.5KA36AHE3/54?
For technical support, including 1.5KA36AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KA36AHE3/54 requirements.
6.How does Aetrix verify that 1.5KA36AHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KA36AHE3/54 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 1.5KA36AHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KA36AHE3/54?
All 1.5KA36AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KA36AHE3/54, 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 1.5KA36AHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KA36AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KA36AHE3/54 Tags
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