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Vishay General Semiconductor - Diodes Division 1.5KE36AHE3/51
- Part No.:
- 1.5KE36AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE36AHE3/51.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,777
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Product details
Overview
1.5KE36AHE3/51 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 34.2 V minimum breakdown voltage (VBR), 30.8 V maximum stand-off voltage (VWM), 49.9 V clamping voltage (VC) at 30.1 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the 1.5KE36AHE3/51 datasheet, 1.5KE36AHE3/51 pinout, 1.5KE36AHE3/51 application, or 1.5KE36AHE3/51 equivalent, key selection criteria include clamping performance under 10/1000 µs transients, unidirectional polarity with cathode band marking, RoHS-compliant matte tin leads, JESD 201 Class 2 whisker resistance, and suitability for industrial power supply input stages and automotive body control modules.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches rapidly (<1 ns response) to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM).
The device is rated for 175 °C maximum junction temperature and exhibits a +0.099 %/°C temperature coefficient of VBR. Thermal resistance is 15.4 °C/W junction-to-lead, enabling effective heat dissipation through PCB copper pours or lead-frame conduction without external heatsinking under typical surge duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 34.2 V - Ensures reliable avalanche initiation above normal operating voltage, preventing false triggering during line ripple or load transients. |
| VWM | 30.8 V - Maximum continuous reverse working voltage; defines safe DC operating margin before leakage rises significantly. |
| VC @ IPPM | 49.9 V - Clamped voltage seen by protected ICs during 30.1 A 10/1000 µs surge; directly limits stress on downstream MOSFETs or controllers. |
| PPPM | 1500 W - Peak transient energy handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out. |
| IPPM | 30.1 A - Maximum non-repetitive surge current capability; determines minimum series impedance required for coordination with fuses or PTCs. |
| TJ max | 175 °C - Enables operation in under-hood automotive environments and high-ambient industrial enclosures without derating. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control units and infotainment power supplies per stress test requirements. |
Pinout & Package
Package: Axial-leaded DO-201AD (Case Style 1.5KE), molded epoxy body with UL 94 V-0 rating, matte tin-plated leads solderable per J-STD-002. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; must maintain low-inductance path to handle fast dI/dt surges. |
| Cathode | Protected line connection / Avalanche node | Connected to line being protected (e.g., 24 V rail); color band identifies this terminal for correct orientation during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Stable VBR tolerance (±5 %) and low leakage (<1 µA at VWM) across temperature and lifetime, critical for long-term reliability in sealed systems. |
| 1500 W peak pulse power (10/1000 µs) | Supports robust protection against lightning-induced surges (IEC 61000-4-5) and inductive switching spikes in motor drives and solenoid controls. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD testing-enables drop-in use in BCM, ADAS power domains, and telematics modules. |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under thermal/humidity stress, eliminating latent short-circuit risk in high-reliability industrial and transportation electronics. |
| RoHS-compliant HE3 suffix | Meets global environmental compliance (EU RoHS, China RoHS) while maintaining full electrical and thermal performance versus legacy non-RoHS variants. |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
|
Use Scenario: 24 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role / Timing Role: Primary shunt clamp on main power rail, placed upstream of DC/DC converters and microcontrollers. Use Value: Limits voltage to ≤49.9 V during 30.1 A surges, preventing latch-up or gate oxide damage in downstream PMICs and CAN transceivers. |
Use Scenario: 24 V digital input channels in programmable logic controllers subject to field-wiring induced transients and ESD events. IC Role / Device Role / Timing Role: First-line protection element before optocoupler or Schmitt-trigger input conditioning stage. Use Value: Sub-1 ns response clamps fast-rising ESD (IEC 61000-4-2) and inductive kickback before signal integrity degrades or input logic flips erroneously. |
| Telecom Power Supply Inrush Suppression | Consumer Appliance Motor Drive Protection |
|
Use Scenario: AC/DC front-end rectifier output in telecom base station power supplies experiencing repeated line surges. IC Role / Device Role / Timing Role: Secondary overvoltage clamp parallel to bulk capacitor, supplementing MOV-based primary protection. Use Value: Handles repetitive 10/1000 µs surges up to 0.01 % duty cycle without degradation, extending system MTBF beyond MOV-only solutions. |
Use Scenario: Brushed DC motor driver outputs in home appliances where commutation spikes threaten gate drivers and MCU GPIOs. IC Role / Device Role / Timing Role: Flyback energy diversion path across motor terminals or H-bridge outputs. Use Value: Absorbs 1500 W peak energy from inductive kickback, reducing radiated emissions and preventing false resets in embedded controllers. |
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 (SMB), 36 V VWM, 58.1 V VC @ 25.4 A, lower PPPM (600 W) | Surface-mount only; unsuitable for through-hole designs or high-current axial layouts requiring mechanical robustness. | Select SMBJ36A only when board space constraints mandate SMD and surge energy is limited to ≤600 W. |
| 1.5KE36CA | Bi-directional variant, same VBR/VC ratings but symmetric clamping for AC-coupled or floating signal lines. | Required for differential data lines (e.g., RS-485), antenna ports, or AC mains inputs where polarity reversal occurs. | Choose 1.5KE36CA instead of 1.5KE36AHE3/51 only when protecting bidirectional signals or AC waveforms-unidirectional 1.5KE36AHE3/51 is optimal for DC rails. |
Compared with SMBJ36A and 1.5KE36CA, the 1.5KE36AHE3/51 delivers higher surge robustness (1500 W vs. 600 W) in a mechanically stable axial package ideal for high-reliability DC power entry points, while its unidirectional architecture avoids unnecessary capacitance and leakage in single-polarity applications.
Availability
1.5KE36AHE3/51 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power supply designs requiring stable component supply, long-lifecycle support, and AEC-Q101-qualified surge protection.
Supply support for 1.5KE36AHE3/51 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, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom infrastructure where failure modes demand proven surge endurance and thermal stability.
FAQ
What is the clamping voltage of the 1.5KE36AHE3/51 under a standard 10/1000 µs surge?
The 1.5KE36AHE3/51 clamps to a maximum of 49.9 V when subjected to its rated peak pulse current of 30.1 A using the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events, ensuring compatibility with 3.3 V, 5 V, and 24 V logic and power ICs.
Is the 1.5KE36AHE3/51 suitable for automotive applications?
Yes, the 1.5KE36AHE3/51 is AEC-Q101 qualified and specifically tested for automotive-grade reliability-including temperature cycling, high-temperature reverse bias, and humidity testing. Its 175 °C maximum junction temperature and JESD 201 Class 2 whisker resistance make it appropriate for under-hood ECUs, body control modules, and infotainment power supplies where sustained thermal stress and long service life are required.
How does the HE3 suffix differ from the standard E3 suffix on the 1.5KE36AHE3/51?
The HE3 suffix on the 1.5KE36AHE3/51 indicates RoHS compliance plus AEC-Q101 qualification and JESD 201 Class 2 whisker resistance-whereas the base E3 suffix denotes RoHS compliance only (commercial grade). The HE3 variant is validated for automotive and high-reliability industrial use, with extended stress testing beyond standard commercial requirements.
What is the maximum reverse leakage current of the 1.5KE36AHE3/51 at its rated stand-off voltage?
At its maximum stand-off voltage of 30.8 V and ambient temperature of 25 °C, the 1.5KE36AHE3/51 exhibits a maximum reverse leakage current (ID) of 1.0 µA. This low leakage preserves system efficiency in always-on circuits and prevents unintended discharge paths in battery-backed or low-power sensor nodes.
Can the 1.5KE36AHE3/51 be used in parallel to increase surge handling capacity?
While the 1.5KE36AHE3/51 datasheet notes that TVS diodes can be used in parallel to increase peak power ratings, doing so requires careful matching of VBR and thermal layout to ensure current sharing. For the 1.5KE36AHE3/51, parallel use is not recommended without empirical validation due to potential imbalance-designers should instead select higher-rated devices like 1.5KE43AHE3/51 if greater than 1500 W capability is needed.
1.5KE36AHE3/51 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:
- 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:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE36AHE3/51 FAQ
1.How can I place an order for 1.5KE36AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE36AHE3/51 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 1.5KE36AHE3/51 reliable?
The price and inventory of 1.5KE36AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE36AHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE36AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE36AHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE36AHE3/51?
1.5KE36AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE36AHE3/51 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 1.5KE36AHE3/51?
For technical support, including 1.5KE36AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE36AHE3/51 requirements.
6.How does Aetrix verify that 1.5KE36AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE36AHE3/51 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 1.5KE36AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE36AHE3/51?
All 1.5KE36AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE36AHE3/51, 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 1.5KE36AHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE36AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE36AHE3/51 Tags
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