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Vishay General Semiconductor - Diodes Division 1N6377HE3/51
- Part No.:
- 1N6377HE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6377HE3/51.pdf
- Description:
- TVS DIODE 15VWM 20.6VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,638
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Product details
Overview
1N6377HE3/51 from Vishay General Semiconductor is a bi-directional TransZORB® transient voltage suppressor (TVS) diode in the 1.5KE package, rated for 1500 W peak pulse power (10/1000 µs), 15.0 V stand-off voltage (VWM), and 17.6 V minimum breakdown voltage (VBR). It clamps to ≤20.6 V at 10 A surge current and operates from –55 °C to +175 °C, serving as primary overvoltage protection on signal lines and DC rails in automotive sensor interfaces.
For engineers reviewing the 1N6377HE3/51 datasheet, 1N6377HE3/51 pinout, 1N6377HE3/51 application, or 1N6377HE3/51 equivalent, key selection criteria include its AEC-Q101 qualification, 2.0 µA max reverse leakage at VWM, low incremental surge resistance, fast response time, and compatibility with J-STD-002 solderability standards.
Technical Context
The 1N6377HE3/51 implements a glass-passivated silicon junction optimized for bi-directional transient suppression. Its clamping behavior follows JEDEC-standardized 10/1000 µs waveform testing, with a clamping factor of 1.33 at full rated power and 1.20 at 50 % power - indicating tight VC/VBR ratio control across surge levels.
Designed for repetitive surge duty cycles up to 0.01 %, it supports peak pulse currents up to 60 A and withstands 200 A non-repetitive forward surge (8.3 ms half-sine). Its thermal design accommodates lead temperature (TL) up to 75 °C with 6.5 W power dissipation on an infinite heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15.0 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min) | 17.6 V at 1.0 mA - guaranteed breakdown threshold ensuring predictable turn-on |
| VC @ 10 A | ≤20.6 V - clamping voltage limiting downstream circuit stress during surge events |
| PPPM | 1500 W - peak pulse power handling capability under standardized 10/1000 µs waveform |
| IPPM | 60 A - maximum non-repetitive peak pulse current supported at rated power |
| TJ max | +175 °C - extended junction temperature rating enabling under-hood automotive use |
| ID @ VWM | ≤2.0 µA - low leakage preserving signal integrity and power efficiency in standby |
Pinout & Package
Package: 1.5KE molded epoxy case (Case Style 1.5KE), RoHS-compliant, AEC-Q101 qualified, matte tin-plated leads. Dimensions per Vishay spec: body diameter 5.3–5.8 mm, lead length ≥25.4 mm, lead diameter 1.07–0.96 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bi-directional) | Accepts surge current in either polarity; no cathode marking on bi-directional devices |
| Cathode | Transient current entry (bi-directional) | Functions identically to anode; symmetric conduction enables bidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR and low leakage over temperature and lifetime |
| AEC-Q101 qualification | Validated reliability for automotive electronics including engine control and ADAS sensors |
| 1500 W peak pulse power (10/1000 µs) | Handles high-energy transients from inductive load switching without degradation |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising surges (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| Solderable per J-STD-002/JESD 22-B102 | Compatible with standard reflow and wave soldering processes in high-volume manufacturing |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Primary shunt TVS device placed at connector entry point to clamp transients before reaching IC pins. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V interface ICs by limiting VC to 20.6 V at 10 A while maintaining <2 µA leakage at 15 V. | Use Scenario: Safeguarding PLC analog input modules and digital I/O terminals against field-induced surges from motor drives and solenoid coils. IC Role / Device Role / Timing Role: Standoff-rated overvoltage clamp on 24 V DC supply rails and signal lines feeding microcontrollers or ADC front-ends. Use Value: Withstands 200 A single half-sine surge (8.3 ms) and delivers consistent clamping across –55 °C to +175 °C ambient, supporting wide industrial temperature operation. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-level protection on Ethernet PHY power rails and RS-485 data lines exposed to lightning-induced surges in base stations and network equipment. IC Role / Device Role / Timing Role: Bi-directional clamping element co-located with GDT or MOV for staged surge suppression. Use Value: Symmetric VBR (17.6 V min) and matched clamping (20.1 V / 20.6 V at 1/10 A) ensure balanced protection on differential pairs without skew. | Use Scenario: Input-stage transient suppression on AC-DC adapter secondary-side 12–24 V outputs subject to inrush and capacitive discharge spikes. IC Role / Device Role / Timing Role: Fast-response shunt protector placed after rectifier but before bulk capacitor and regulator IC. Use Value: 1500 W pulse rating and 6.5 W steady-state dissipation enable robust protection without thermal derating in compact enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | 600 W PPPM, DO-214AA package, lower surge current (33.3 A), same VWM/VBR range | Lower power density; suited for space-constrained PCBs where 1500 W is not required | Select when board area is critical and surge energy is ≤600 W; verify thermal margin at 6.5 W PD |
| 1N6377HE3/36 | Same electrical specs, different packaging: 36" lead length vs. 51" in 1N6377HE3/51; identical AEC-Q101 qualification | No functional difference; choice driven by assembly line feed requirements (tape-and-reel pitch, lead form) | Direct form-fit-function replacement; select based on SMT feeder compatibility and lead trim needs |
Compared with SMBJ15CA and 1N6377HE3/36, the 1N6377HE3/51 offers higher surge capacity in a through-hole 1.5KE package with longer leads for manual or selective soldering, making it optimal for high-reliability automotive and industrial power rail protection where mechanical robustness and thermal mass matter.
Availability
1N6377HE3/51 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for 1N6377HE3/51 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The 1N6377HE3/51 belongs to Vishay's TransZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of the 1N6377HE3/51 at 10 A surge current?
The 1N6377HE3/51 has a maximum clamping voltage (VC) of 20.6 V when subjected to a 10 A peak pulse current with a 10/1000 µs waveform. This value is measured per JEDEC standards and ensures predictable overvoltage limiting for downstream ICs. The clamping voltage is confirmed in the Electrical Characteristics table of Vishay document 88356 and applies across the full operating temperature range.
Is the 1N6377HE3/51 suitable for automotive applications?
Yes, the 1N6377HE3/51 is AEC-Q101 qualified and explicitly rated for automotive use. Its –55 °C to +175 °C operating junction temperature range, glass-passivated junction, and 1500 W surge capability meet requirements for engine control units, ADAS sensors, and body electronics. The HE3 suffix denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, confirming suitability for under-hood deployment.
What does the "HE3/51" suffix mean in 1N6377HE3/51?
The "HE3" suffix indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. The "/51" denotes a 51-inch (1295 mm) lead length configuration, optimized for through-hole insertion and selective soldering in high-reliability assemblies. This differs from /36 (36-inch leads) and /54 (tape-and-reel packaging), all sharing identical electrical specifications.
How does the 1N6377HE3/51 differ from uni-directional versions like 1N6377E3/51?
The 1N6377HE3/51 is bi-directional, meaning it clamps transients of either polarity symmetrically, with no cathode marking. In contrast, the uni-directional 1N6377E3/51 has a cathode band and only conducts in reverse bias - it cannot protect against positive-going transients on the anode side. Both share identical VWM, VBR, and PPPM, but their circuit placement and polarity sensitivity differ fundamentally.
What is the maximum reverse leakage current for the 1N6377HE3/51 at its stand-off voltage?
The 1N6377HE3/51 exhibits a maximum reverse leakage current (ID) of 2.0 µA at its 15.0 V stand-off voltage (VWM) and 25 °C ambient temperature. This low leakage preserves signal integrity and minimizes standby power loss in battery-powered or precision analog circuits. Leakage remains within specification across the full –55 °C to +125 °C operating range per Vishay's derating curves.
1N6377HE3/51 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):
- 15V
- Voltage - Breakdown (Min):
- 17.6V
- Voltage - Clamping (Max) @ Ipp:
- 20.6V
- Current - Peak Pulse (10/1000µs):
- 60A
- 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
1N6377HE3/51 FAQ
1.How can I place an order for 1N6377HE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6377HE3/51 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 1N6377HE3/51 reliable?
The price and inventory of 1N6377HE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6377HE3/51 is usually 5 days.
3.What payment methods are accepted for 1N6377HE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6377HE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6377HE3/51?
1N6377HE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6377HE3/51 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 1N6377HE3/51?
For technical support, including 1N6377HE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6377HE3/51 requirements.
6.How does Aetrix verify that 1N6377HE3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6377HE3/51 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 1N6377HE3/51 meets industry standards.
7.What is the process for return or replacement of 1N6377HE3/51?
All 1N6377HE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6377HE3/51, 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 1N6377HE3/51 part is unused and in its original packaging.
Return procedure for 1N6377HE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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