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Vishay General Semiconductor - Diodes Division 1.5KE36CAHE3/51
- Part No.:
- 1.5KE36CAHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE36CAHE3/51.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,483
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Product details
Overview
1.5KE36CAHE3/51 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 34.2 V to 37.8 V breakdown voltage (VBR) at 1 mA, 30.8 V maximum stand-off voltage (VWM), 49.9 V clamping voltage (VC) at 30.1 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection circuits.
For engineers reviewing the 1.5KE36CAHE3/51 datasheet, 1.5KE36CAHE3/51 pinout, 1.5KE36CAHE3/51 application, or 1.5KE36CAHE3/51 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, RoHS-compliant HE3 suffix (JESD 201 Class 2 whisker test), and compatibility with 8.3 ms surge waveforms per JESD 22-B102 solderability standards.
Technical Context
This bi-directional TVS diode operates symmetrically across both polarities, delivering consistent clamping performance without polarity dependency. Its glass-passivated junction enables fast response time (~1 ns) and low incremental surge resistance, critical for protecting MOSFET gates and microcontroller I/O pins against ESD and lightning-induced transients.
The device is rated for -55 °C to +175 °C operating junction temperature and exhibits a 0.099 %/°C temperature coefficient of VBR. Thermal resistance is 15.4 °C/W (junction-to-lead), supporting reliable power dissipation up to 6.5 W on infinite heatsink at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - defines precise voltage threshold where clamping initiates in either polarity |
| VWM | 30.8 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 49.9 V at 30.1 A - peak clamped voltage during 10/1000 µs transient, limiting stress on downstream ICs |
| PPPM | 1500 W - peak pulse power handling capacity, enabling protection against severe lightning surges |
| TJ max. | +175 °C - high-temperature operation supports under-hood automotive and industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| HE3 Suffix | JESD 201 Class 2 whisker resistance - ensures long-term solder joint integrity in high-reliability assemblies |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads; meets UL 94 V-0 flammability rating and RoHS compliance. Dimensions: 5.6 mm × 5.6 mm × 9.5 mm (L × W × H), lead length 9.5 mm (0.375″).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bi-directional) | Transient conduction path | No polarity marking; symmetrical terminals conduct identically in both directions during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables <1 ns response time and stable VBR over lifetime, critical for sub-microsecond ESD events |
| 1500 W peak pulse power (10/1000 µs) | Supports MIL-STD-1275E and ISO 7637-2 Pulse 5a/b surge immunity without external derating |
| AEC-Q101 qualification | Validated for automotive powertrain and chassis modules requiring zero-failure field reliability |
| Bi-directional clamping | Eliminates need for polarity-aware layout; protects AC-coupled lines and differential buses like CAN FD |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, preserving margin for 3.3 V/5 V logic interfaces |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in engine control units. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between sensor line and ground, absorbing transients before they reach MCU ADC or comparator inputs. Use Value: Maintains signal integrity below 50 V clamping threshold while surviving repeated 1500 W surges per AEC-Q101 stress profiles. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to 24 V DC field wiring with long cable runs and relay coil back-EMF. IC Role / Device Role / Timing Role: Standoff protector mounted directly at terminal block entry point, shunting >30 A surge currents away from optocoupler isolation barriers. Use Value: Enables >100,000 surge cycles without degradation due to glass-passivated junction stability and 175 °C thermal rating. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHY magnetics and PoE injectors from induced lightning surges on outdoor cabling per IEC 61000-4-5 Level 4. IC Role / Device Role / Timing Role: Primary-level TVS placed across secondary-side transformer windings, clamping common-mode transients before reaching RJ45 jack. Use Value: Delivers 49.9 V clamping at 30.1 A with <1 ns response, meeting EN 61000-4-5 4 kV/2 Ω ring wave requirements. |
Use Scenario: Secondary-side overvoltage suppression on 12 V/19 V SMPS outputs feeding laptops and monitors, preventing latch-up during output short-circuit recovery. IC Role / Device Role / Timing Role: Fast-acting clamp parallel to output capacitor, limiting transient excursions during MOSFET turn-on overshoot or feedback loop instability. Use Value: Withstands 6.5 W continuous power dissipation and maintains VWM = 30.8 V to avoid false triggering during normal 12 V ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Lower PPPM (600 W), smaller SMB package (3.6 mm × 4.5 mm), higher VC (58.1 V at 10.3 A) | Better suited for space-constrained consumer PCBs; insufficient for automotive load dump per ISO 7637-2 | Select when board area is critical and surge energy is limited to <600 W |
| 1.5SMC36CA | Same 1500 W rating and VBR range, but SMC package (7.1 mm × 6.2 mm); no AEC-Q101 qualification | Acceptable for industrial controls but not automotive qualified designs; requires separate reliability validation | Choose only if AEC-Q101 is not required and SMC footprint matches existing layout |
Compared with SMBJ36CA and 1.5SMC36CA, the 1.5KE36CAHE3/51 uniquely combines AEC-Q101 qualification, 1500 W capability in a through-hole 1.5KE package, and JESD 201 Class 2 whisker resistance - making it the only option qualified for under-hood automotive deployment without requalification.
Availability
1.5KE36CAHE3/51 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface surge suppression requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE36CAHE3/51 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 passive components for automotive, industrial, and computing markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, emphasizing AEC-Q101 compliance, thermal robustness, and repeatable clamping performance across temperature extremes.
FAQ
What is the clamping voltage of the 1.5KE36CAHE3/51 under a 10/1000 µs surge?
The 1.5KE36CAHE3/51 clamps to a maximum of 49.9 V at 30.1 A peak pulse current when subjected to a 10/1000 µs waveform. This value is measured per JEDEC standard test conditions and reflects worst-case voltage seen by protected circuitry during standardized surge events - critical for ensuring downstream 3.3 V or 5 V ICs remain within absolute maximum ratings.
Is the 1.5KE36CAHE3/51 suitable for automotive applications?
Yes, the 1.5KE36CAHE3/51 is AEC-Q101 qualified and carries the HE3 suffix indicating JESD 201 Class 2 whisker resistance - both essential for automotive under-hood and chassis applications. Its -55 °C to +175 °C operating range and validated performance against load dump and ISO 7637-2 pulses confirm suitability for engine control units and ADAS sensor modules.
How does the bi-directional design of the 1.5KE36CAHE3/51 affect circuit layout?
The 1.5KE36CAHE3/51 has no polarity marking and conducts identically in both directions, eliminating orientation concerns during placement. This simplifies layout for AC-coupled lines, differential buses (e.g., CAN, RS-485), and unidirectional power rails where reverse polarity risk exists - reducing assembly errors and enabling single-part stocking for multiple interface types.
What is the meaning of the 'HE3' suffix in 1.5KE36CAHE3/51?
The 'HE3' suffix denotes RoHS compliance plus AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. Unlike standard 'E3' parts, 'HE3' devices undergo additional stress testing for automotive use and feature enhanced lead finish integrity - verified per JESD 201 methodology to prevent tin whisker growth in high-humidity, high-temperature environments.
Can the 1.5KE36CAHE3/51 be used in parallel to increase surge current handling?
Yes, the 1.5KE36CAHE3/51 may be paralleled to increase total peak pulse current capacity, provided matched VBR tolerance (±5 %) and symmetrical PCB layout with equal trace lengths and thermal coupling. Derating by 20 % per added device is recommended to ensure balanced current sharing and avoid thermal runaway during repetitive surges.
1.5KE36CAHE3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE36CAHE3/51 FAQ
1.How can I place an order for 1.5KE36CAHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE36CAHE3/51 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 1.5KE36CAHE3/51 reliable?
The price and inventory of 1.5KE36CAHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE36CAHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE36CAHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE36CAHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE36CAHE3/51?
1.5KE36CAHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE36CAHE3/51 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 1.5KE36CAHE3/51?
For technical support, including 1.5KE36CAHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE36CAHE3/51 requirements.
6.How does Aetrix verify that 1.5KE36CAHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE36CAHE3/51 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 1.5KE36CAHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE36CAHE3/51?
All 1.5KE36CAHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE36CAHE3/51, 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 1.5KE36CAHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE36CAHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE36CAHE3/51 Tags
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