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Vishay General Semiconductor - Diodes Division 1.5KE36AHE3_B/C
- Part No.:
- 1.5KE36AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE36AHE3_B/C.pdf
- Description:
- 1.5KW,36V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,544
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Product details
Overview
1.5KE36AHE3_B/C from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 34.2 V to 37.8 V breakdown voltage (VBR) at 1 mA, 30.8 V maximum standoff 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 - used to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE36AHE3_B/C datasheet, 1.5KE36AHE3_B/C pinout, 1.5KE36AHE3_B/C application, or 1.5KE36AHE3_B/C equivalent, this part delivers verified AEC-Q101 qualification (per note 2), RoHS-compliant matte tin-plated leads, JESD 201 Class 2 whisker resistance, and UL 94 V-0 molded epoxy packaging - critical for automotive body electronics, industrial PLC I/O modules, and telecom power supply front-ends requiring robust, production-ready surge immunity.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: when transient voltage exceeds VBR, it avalanches into low-impedance conduction, diverting surge current away from downstream circuitry while holding voltage at ≤49.9 V. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response (<1 ns).
Thermal design relies on RθJL = 15.4 °C/W (junction-to-lead) and RθJA = 75 °C/W (junction-to-ambient), enabling reliable operation up to TJ = +175 °C. The 1.5KE package supports 200 A non-repetitive forward surge (IFSM) and 6.5 W steady-state power dissipation 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 avalanche initiation threshold for repeatable clamping behavior |
| VWM | 30.8 V - maximum continuous reverse operating voltage before leakage rises above 1.0 µA |
| VC @ IPPM | 49.9 V at 30.1 A - clamped voltage during 10/1000 µs surge, limiting stress on protected ICs |
| PPPM | 1500 W - peak transient power handling capability under standardized surge waveform |
| IFSM | 200 A - single half-sine surge current rating (8.3 ms), supporting high-energy inductive load switching |
| TJ max. | +175 °C - extended junction temperature range enables under-hood automotive and industrial deployment |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements (note 2) |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded, molded epoxy body meeting UL 94 V-0 flammability rating; cathode indicated by color band on unidirectional devices like 1.5KE36AHE3_B/C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side reference; enables clamping of positive transients on cathode-connected lines |
| Cathode | Current exit point during forward conduction; marked with band | Connected to protected line (e.g., 24 V rail); conducts surge current to ground when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 µA), and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Supports EN 61000-4-5 Level 4 (4 kV) surge immunity without external series impedance |
| AEC-Q101 qualified | Validated for automotive applications including body control modules and infotainment power supplies |
| RoHS-compliant & JESD 201 Class 2 whisker resistant | Enables lead-free reflow assembly and eliminates tin whisker risk in high-reliability systems |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation required for industrial and transportation safety certifications |
Applications
| Automotive Body Electronics | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protecting LIN bus transceivers and door module microcontrollers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt clamp on 12 V supply rail, triggered within <1 ns to limit voltage to ≤49.9 V. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V logic ICs during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding 24 V digital input circuits from field-wiring induced surges in factory automation. IC Role / Device Role / Timing Role: Primary overvoltage clamp across optocoupler input, conducting 30.1 A peak current without failure. Use Value: Eliminates need for external MOVs or gas discharge tubes, reducing BOM count and PCB footprint. |
| Telecom Power Supply Front-End | Consumer Appliance Motor Control |
Use Scenario: Suppressing lightning-induced transients on -48 V DC telecom rectifier outputs. IC Role / Device Role / Timing Role: High-energy clamping device placed upstream of DC/DC converters and PMICs. Use Value: Maintains system uptime by preventing catastrophic failure during ITU-T K.20/21 Level 4 surges. |
Use Scenario: Protecting H-bridge gate drivers from back-EMF spikes during BLDC motor commutation. IC Role / Device Role / Timing Role: Fast-response shunt element across low-side MOSFET source-drain path. Use Value: Reduces EMI and prevents false triggering of overvoltage protection in motor driver ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | DO-214AA package; lower PPPM = 600 W; VC = 58.1 V @ 10.3 A | Compact surface-mount alternative for space-constrained designs; not rated for 1500 W surges | Select SMBJ36A only if surge energy is limited to IEC 61000-4-5 Level 2 (1 kV) and board layout favors SMD. |
| 1.5KE36CA | Bidirectional variant; same VBR range but symmetrical clamping for AC-coupled or floating lines | Required for RS-485 data lines or transformer-coupled power where polarity reversal occurs | Choose 1.5KE36CA only when protecting bidirectional signals; 1.5KE36AHE3_B/C is optimal for DC rail clamping. |
Compared with SMBJ36A and 1.5KE36CA, the 1.5KE36AHE3_B/C uniquely combines 1500 W surge capacity, AEC-Q101 qualification, and axial-leaded through-hole mounting - making it the preferred choice for high-reliability DC power rail protection where mechanical robustness and legacy compatibility matter.
Availability
1.5KE36AHE3_B/C is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, and telecom power supply front-ends requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for 1.5KE36AHE3_B/C 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 application-specific performance.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of the 1.5KE36AHE3_B/C under a 10/1000 µs surge?
The 1.5KE36AHE3_B/C clamps to a maximum of 49.9 V at its rated peak pulse current of 30.1 A, as specified in the Vishay datasheet (Document Number: 88301, page 2). This value is measured under standardized 10/1000 µs waveform conditions and represents the upper voltage limit imposed on protected circuitry during surge events. Engineers use this parameter to verify margin between VC and the absolute maximum ratings of downstream ICs.
Is the 1.5KE36AHE3_B/C qualified for automotive applications?
Yes, the 1.5KE36AHE3_B/C carries AEC-Q101 qualification per note (2) in the Vishay datasheet, covering devices from 1.5KE6.8AHE3_B to 1.5KE220AHE3_B. This qualification confirms compliance with stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life - making the 1.5KE36AHE3_B/C suitable for under-hood and cabin electronics in passenger vehicles and commercial fleets.
What does the "HE3_B/C" suffix indicate in 1.5KE36AHE3_B/C?
The "HE3_B/C" suffix denotes RoHS-compliant construction with JESD 201 Class 2 whisker resistance and AEC-Q101 qualification (B = revision level; C = packaging code for 13" paper tape and reel, 1400 units per reel). This distinguishes it from commercial-grade E3 variants and confirms suitability for automotive and industrial applications requiring enhanced reliability and lead-free assembly compatibility.
How does the 1.5KE36AHE3_B/C differ from bidirectional TVS diodes like 1.5KE36CA?
The 1.5KE36AHE3_B/C is unidirectional and functions only during reverse-biased overvoltage events - ideal for DC power rails where polarity is fixed. In contrast, 1.5KE36CA provides symmetrical clamping in both directions, required for AC signals or floating lines such as RS-485. Their VBR and VC values differ slightly due to internal structure, and 1.5KE36AHE3_B/C cannot replace 1.5KE36CA in bidirectional applications without risking failure.
What is the maximum junction temperature rating for the 1.5KE36AHE3_B/C?
The 1.5KE36AHE3_B/C has a maximum junction temperature (TJ) rating of +175 °C, as confirmed in the "Maximum Ratings" table (page 1) of the Vishay datasheet. This allows operation in high-ambient environments such as engine compartments or enclosed industrial enclosures, provided thermal design accounts for RθJL = 15.4 °C/W and appropriate lead length (0.375") is maintained for heat dissipation.
1.5KE36AHE3_B/C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 31A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE36AHE3_B/C FAQ
1.How can I place an order for 1.5KE36AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE36AHE3_B/C 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 1.5KE36AHE3_B/C reliable?
The price and inventory of 1.5KE36AHE3_B/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE36AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE36AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE36AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE36AHE3_B/C?
1.5KE36AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE36AHE3_B/C 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 1.5KE36AHE3_B/C?
For technical support, including 1.5KE36AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE36AHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE36AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE36AHE3_B/C 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 1.5KE36AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE36AHE3_B/C?
All 1.5KE36AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE36AHE3_B/C, 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 1.5KE36AHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE36AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE36AHE3_B/C Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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