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Vishay General Semiconductor - Diodes Division 1N6374HE3/51
- Part No.:
- 1N6374HE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6374HE3/51.pdf
- Description:
- TVS DIODE 8VWM 11.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,797
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Product details
Overview
1N6374HE3/51 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode in the 1.5KE package, rated for 8.0 V stand-off voltage (VWM), 9.4 V minimum breakdown voltage (VBR), and 1500 W peak pulse power with 10/1000 μs waveform. It delivers 100 A peak pulse current (IPP), clamps to 11.5 V at 10 A, and operates from –55 °C to +175 °C - used for surge protection on signal lines in automotive sensor interfaces.
For engineers reviewing the 1N6374HE3/51 datasheet, 1N6374HE3/51 pinout, 1N6374HE3/51 application, or 1N6374HE3/51 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, 1.5KE package compatibility, and verified 11.3 V clamping at 1.0 A for robust ESD/transient immunity in harsh environments.
Technical Context
This device is a glass-passivated, bi-directional TVS diode designed to protect sensitive electronics against fast-rising transients such as inductive switching spikes and lightning-induced surges. Its symmetrical I–V characteristics enable clamping in both polarities without polarity marking, and it meets JEDEC registered transient suppression standards.
The 1N6374HE3/51 features low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of sub-microsecond transients. Its 1.5KE case supports high thermal dissipation, with derated power handling up to 175 °C junction temperature and compliance with JESD 201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min) | 9.4 V at 1.0 mA - guaranteed breakdown threshold for reliable clamping activation |
| VC @ 10 A | 11.5 V - clamping voltage under full-rated 10 A transient, defining worst-case protected line voltage |
| PPPM | 1500 W - peak pulse power handling with 10/1000 μs waveform, critical for IEC 61000-4-5 Level 4 compliance |
| IPP | 100 A - maximum non-repetitive peak current the device sustains without failure |
| TJ max | +175 °C - extended junction temperature rating enabling under-hood automotive deployment |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: 1.5KE molded epoxy case (DO-201AD), axial-leaded, RoHS-compliant, matte tin-plated leads solderable per J-STD-02 and JESD 22-B102. No polarity marking - bi-directional operation confirmed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bi-directional terminals - interchangeable; no cathode band; conducts during either polarity overvoltage |
| Lead 1 | Connection to PCB trace or cable shield | Provides low-inductance path to ground or rail; lead length ≤ 9.5 mm specified for thermal performance |
| Lead 2 | Connection to protected node | Placed directly across IC input/output pins or MOSFET gate-source to clamp fast transients |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 1500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-to-ground) in industrial and automotive systems |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Clamping factor = 1.22 at 50 % power | Ensures tight voltage margin between VBR and VC - critical for protecting 5 V and 3.3 V logic rails |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability assemblies where long-term storage or elevated temperature is expected |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed across differential signal pair or single-ended sensor output to ground. Use Value: Maintains signal integrity by limiting transient excursions to ≤11.5 V while surviving repeated 100 A surges per AEC-Q101 test conditions. |
Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring induced transients (e.g., relay coil kickback). IC Role / Device Role / Timing Role: Parallel-connected TVS across optocoupler input or microcontroller GPIO to shunt energy before damage occurs. Use Value: Enables >100,000 surge cycles at 10 A due to low clamping voltage and high thermal mass of 1.5KE package. |
| Telecom Line Interface | Consumer Power Adapter EMI Filtering |
Use Scenario: Safeguarding Ethernet PHY interface circuits and PoE injectors against lightning-induced common-mode surges on twisted-pair lines. IC Role / Device Role / Timing Role: Paired bi-directional TVS devices on each line (e.g., TX+/TX−) referenced to chassis ground. Use Value: Symmetrical clamping ensures balanced suppression without skewing differential signaling integrity. |
Use Scenario: Secondary-side transient suppression on USB-C PD adapter output rails exposed to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Clamp placed between VBUS and GND downstream of DC-DC converter to prevent overvoltage on connected devices. Use Value: Fast <1 ns response captures ESD events before internal LDOs or USB switch ICs are stressed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | Uni-directional; 8.0 V VWM; 1.0 kW PPPM; DO-214AA package; lower power rating | Requires polarity-aware layout; unsuitable for AC-coupled or floating signal lines | Select when cost sensitivity outweighs bi-directionality need and peak surge stays below 65 A |
| 1N6374HE3/54 | Same electrical specs; identical 1.5KE package; differs only in tape-and-reel packaging (54 vs. 51) | No functional difference; same AEC-Q101 qualification and thermal performance | Choose based on preferred reel size (1400 pcs vs. 1500 pcs) and assembly line feeder compatibility |
Compared with SMBJ8.0A and 1N6374HE3/54, the 1N6374HE3/51 uniquely combines bi-directional operation, 1500 W surge capacity, and AEC-Q101 qualification in the 1.5KE form factor - making it optimal for automotive and industrial designs requiring polarity-agnostic, high-energy transient immunity without layout redesign.
Availability
1N6374HE3/51 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter secondary-side surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for 1N6374HE3/51 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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1N6374HE3/51 belongs to Vishay's TRANSZORB® family of TVS diodes, engineered specifically for high-energy transient suppression in demanding environments including automotive, industrial, and telecommunications infrastructure.
FAQ
What is the clamping voltage of the 1N6374HE3/51 at 10 A?
The 1N6374HE3/51 has a maximum clamping voltage (VC) of 11.5 V at 10 A peak pulse current with a 10/1000 μs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during a full-rated transient event. The 1N6374HE3/51 maintains this clamping performance across its qualified temperature range and after AEC-Q101 stress testing.
Is the 1N6374HE3/51 bi-directional or uni-directional?
The 1N6374HE3/51 is a bi-directional TVS diode - confirmed by its inclusion in the ICTE8/1N6374 series without "C" suffix restriction and explicit documentation stating "bi-directional types" apply to 1N6374. It exhibits symmetrical breakdown and clamping behavior in both polarities, with no cathode marking required. This enables use on AC signals, differential pairs, or floating nodes where polarity is undefined.
Does the 1N6374HE3/51 meet AEC-Q101 requirements?
Yes, the 1N6374HE3/51 is AEC-Q101 qualified, as indicated by the "HE3" suffix per Vishay's ordering nomenclature and confirmed in the primary characteristics table. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - validating suitability for automotive powertrain, chassis, and body electronics applications.
What package does the 1N6374HE3/51 use, and what are its key mechanical features?
The 1N6374HE3/51 uses the 1.5KE (DO-201AD) package: axial-leaded, molded epoxy body meeting UL 94 V-0 flammability rating. Key features include matte tin-plated leads compliant with J-STD-002, 9.5 mm minimum lead length for thermal relief, and JESD 201 Class 2 whisker resistance. Its thermal mass supports 6.5 W power dissipation at TL = 75 °C.
How does the 1N6374HE3/51 compare to the 1N6374 without the HE3/51 suffix?
The 1N6374HE3/51 adds RoHS compliance, AEC-Q101 qualification, and JESD 201 Class 2 whisker resistance versus legacy 1N6374 variants. The "HE3" denotes high-reliability qualification and "51" specifies 13″ paper tape and reel packaging (1500 pcs). Electrically and thermally, the 1N6374HE3/51 matches the base 1N6374 but with enhanced process controls and traceability for automotive and industrial use.
1N6374HE3/51 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):
- 8V
- Voltage - Breakdown (Min):
- 9.4V
- Voltage - Clamping (Max) @ Ipp:
- 11.5V
- Current - Peak Pulse (10/1000µs):
- 100A
- 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
1N6374HE3/51 FAQ
1.How can I place an order for 1N6374HE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6374HE3/51 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 1N6374HE3/51 reliable?
The price and inventory of 1N6374HE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6374HE3/51 is usually 5 days.
3.What payment methods are accepted for 1N6374HE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6374HE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6374HE3/51?
1N6374HE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6374HE3/51 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 1N6374HE3/51?
For technical support, including 1N6374HE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6374HE3/51 requirements.
6.How does Aetrix verify that 1N6374HE3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6374HE3/51 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 1N6374HE3/51 meets industry standards.
7.What is the process for return or replacement of 1N6374HE3/51?
All 1N6374HE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6374HE3/51, 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 1N6374HE3/51 part is unused and in its original packaging.
Return procedure for 1N6374HE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6374HE3/51 Tags
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