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Vishay General Semiconductor - Diodes Division 1.5KE75AHE3_B/C
- Part No.:
- 1.5KE75AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE75AHE3_B/C.pdf
- Description:
- 1.5KW,75V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,078
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Product details
Overview
1.5KE75AHE3_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 71.3 V to 78.8 V breakdown voltage (VBR), 64.1 V maximum standoff voltage (VWM), 104 V clamping voltage at 14.6 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and operates across -55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the 1.5KE75AHE3_B/C datasheet, 1.5KE75AHE3_B/C pinout, 1.5KE75AHE3_B/C application, or 1.5KE75AHE3_B/C equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJL = 15.4 °C/W), JEDEC 1.5KE package dimensions, and real-world clamping behavior under transient surge conditions.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its clamping action begins at VBR ≥ 71.3 V with 1 mA test current and limits transients to ≤104 V at 14.6 A (10/1000 µs waveform), enabling robust protection of downstream MOSFETs and ICs against ESD, lightning-induced surges, and inductive switching spikes.
The device is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), supports 6.5 W steady-state power dissipation on infinite heatsink at 75 °C lead temperature, and exhibits a temperature coefficient of VBR of +0.105 %/°C - confirming stable breakdown behavior across extended operating temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 71.3 V / 78.8 V at 1 mA - defines precise voltage threshold where clamping initiates under transient stress |
| VWM | 64.1 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 104 V at 14.6 A (10/1000 µs) - actual clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 1500 W - peak transient power handling capability without failure, critical for lightning surge immunity |
| IFSM | 200 A (8.3 ms half-sine) - surge current rating for short-duration inductive turn-off events |
| TJ Range | -55 °C to +175 °C - enables deployment in under-hood automotive and high-temperature industrial environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance supports reliable power dissipation without external heatsinking |
Pinout & Package
Package: JEDEC-standard Case Style 1.5KE - molded epoxy body with matte tin-plated leads, RoHS-compliant, UL 94 V-0 rated, 0.375" (9.5 mm) lead length, 0.042" (1.07 mm) lead diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to ground or low-side reference in unidirectional TVS configuration |
| Cathode | Current exit point in forward bias; marked with color band | Connected to protected line (e.g., 12 V rail or CAN_H); absorbs positive transients when referenced to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable breakdown characteristics and long-term reliability under repeated surge stress |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per JESD47 |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for 4 kV line-to-earth tests |
| Clamping voltage ≤104 V at 14.6 A | Ensures protected ICs (e.g., MCU I/O pins rated to 36 V) remain within absolute maximum ratings during surge |
| Low RθJL = 15.4 °C/W | Permits direct PCB mounting without thermal vias or heatsinks in space-constrained automotive modules |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery rail in engine control units exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping device placed between battery input and DC-DC converter input stage. Use Value: Limits transients to ≤104 V, preventing damage to 40 V-rated buck controller ICs and ensuring ASIL-B system continuity. | Use Scenario: 4–20 mA current loop interface in factory automation PLC analog input modules. IC Role / Device Role / Timing Role: Unidirectional TVS connected between signal line and ground to suppress ESD and field-wiring induced surges. Use Value: Clamps 8/20 µs surges to <110 V within <1 ns, preserving 24 V op-amp front-end integrity and maintaining 12-bit ADC accuracy. |
| Telecom DC Power Feeding | Consumer Appliance Motor Drive Protection |
Use Scenario: -48 V DC feeding line in remote radio head (RRH) base stations subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on feed line input, coordinated with gas discharge tube (GDT) for staged protection. Use Value: Withstands 64.1 V continuous reverse voltage while clamping 10/1000 µs surges to 104 V - enabling interoperability with -57 V to -40 V telecom standards. | Use Scenario: H-bridge gate driver supply rail in smart washing machine motor control board. IC Role / Device Role / Timing Role: Unidirectional TVS on 15 V auxiliary rail protecting half-bridge drivers from inductive kickback during PWM switching. Use Value: 200 A IFSM rating handles repetitive 100 A inductive spikes; 175 °C TJmax ensures operation near heat-generating IGBTs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A-E3/52 | Lower PPPM (600 W), smaller SMB package (RθJA = 110 °C/W), same VBR range (71.3–78.8 V) | Not AEC-Q101 qualified; limited to consumer/industrial use; lower surge margin in automotive load dump | Select when board space is constrained and surge energy is ≤600 W; verify thermal derating at 125 °C ambient |
| 1.5SMC75AHE3_A/H | Same 1500 W rating and AEC-Q101 qualification; SMC package (higher RθJA = 100 °C/W vs. 1.5KE's 75 °C/W) | Same automotive suitability but requires larger PCB footprint; slightly higher clamping voltage (107 V) | Choose if existing layout uses SMC footprint; confirm 3.5 mm creepage clearance meets IEC 62368-1 |
Compared with 1.5KE75AHE3_B/C, SMBJ75A-E3/52 offers compact size but sacrifices automotive qualification and surge margin, while 1.5SMC75AHE3_A/H matches performance and qualification yet demands more PCB area and exhibits marginally higher clamping - making 1.5KE75AHE3_B/C optimal for space-tolerant, high-reliability automotive and industrial power rail protection.
Availability
1.5KE75AHE3_B/C is available at Aetrix Electronics and suitable for automotive power systems, industrial sensor interfaces, telecom DC feeding, and appliance motor drive circuits requiring stable component supply, long-lifecycle support, and AEC-Q101 compliance.
Supply support for 1.5KE75AHE3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5KE series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where sustained surge immunity and temperature resilience are mandatory.
FAQ
What is the breakdown voltage tolerance for 1.5KE75AHE3_B/C?
The 1.5KE75AHE3_B/C has a specified breakdown voltage (VBR) range of 71.3 V to 78.8 V at 1 mA test current, representing ±5% tolerance around the nominal 75 V rating. This tight distribution ensures consistent clamping onset across production lots and supports predictable system-level surge margin calculations in designs compliant with ISO 7637-2 or IEC 61000-4-5.
Is 1.5KE75AHE3_B/C AEC-Q101 qualified?
Yes, 1.5KE75AHE3_B/C is AEC-Q101 qualified per Note (2) in the Vishay datasheet (Document Number: 88301, Revision: 09-Aug-2022), covering devices from 1.5KE6.8AHE3_B to 1.5KE220AHE3_B. This qualification confirms its suitability for automotive applications including engine control, body electronics, and ADAS modules where reliability under thermal, mechanical, and electrical stress is critical.
What is the maximum clamping voltage of 1.5KE75AHE3_B/C under surge conditions?
The maximum clamping voltage (VC) of 1.5KE75AHE3_B/C is 104 V at 14.6 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transient events - essential for verifying compatibility with downstream components' absolute maximum ratings.
Can 1.5KE75AHE3_B/C be used in bidirectional configurations?
No, 1.5KE75AHE3_B/C is a unidirectional TVS diode, indicated by the "A" suffix. Bidirectional variants use the "CA" suffix (e.g., 1.5KE75CA). Using 1.5KE75AHE3_B/C in bidirectional applications would leave negative-going transients unprotected; for AC or differential-line protection, select the corresponding CA version or pair unidirectional devices back-to-back.
What is the thermal resistance from junction to lead (RθJL) for 1.5KE75AHE3_B/C?
The thermal resistance from junction to lead (RθJL) for 1.5KE75AHE3_B/C is 15.4 °C/W, as specified in the Thermal Characteristics table of the Vishay datasheet. This low value enables efficient heat transfer from the silicon die to the PCB copper through the leads, supporting reliable operation at full 1500 W surge rating without additional heatsinking in typical automotive and industrial mounting configurations.
1.5KE75AHE3_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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 15A
- 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
1.5KE75AHE3_B/C FAQ
1.How can I place an order for 1.5KE75AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE75AHE3_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 1.5KE75AHE3_B/C reliable?
The price and inventory of 1.5KE75AHE3_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 1.5KE75AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE75AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE75AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE75AHE3_B/C?
1.5KE75AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE75AHE3_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 1.5KE75AHE3_B/C?
For technical support, including 1.5KE75AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE75AHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE75AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE75AHE3_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 1.5KE75AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE75AHE3_B/C?
All 1.5KE75AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE75AHE3_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 1.5KE75AHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE75AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE75AHE3_B/C Tags
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