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Vishay General Semiconductor - Diodes Division 1N6277HE3/73
- Part No.:
- 1N6277HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6277HE3/73.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,761
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Product details
Overview
1N6277HE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 1500 W peak pulse power rating (10/1000 µs), 17.1–18.9 V breakdown voltage at 1 mA, 15.3 V standoff voltage, 25.2 V clamping voltage at 59.5 A peak pulse current, and operates from –55 °C to +175 °C - used to safeguard MOSFETs and ICs against inductive switching transients in industrial motor drives.
For engineers reviewing the 1N6277HE3/73 datasheet, 1N6277HE3/73 pinout, 1N6277HE3/73 application, or 1N6277HE3/73 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, AEC-Q101 qualification status, thermal resistance (RθJL = 15.4 °C/W), and real-world use context for automotive-grade surge protection design.
Technical Context
This device implements a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional polarity uses a cathode band marking, and it complies with JESD 201 Class 2 whisker testing due to the HE3 suffix.
It delivers 1500 W peak pulse power under 10/1000 µs waveform conditions with 0.01 % duty cycle, derates linearly above 25 °C ambient per Fig. 2, and supports 200 A non-repetitive forward surge current (8.3 ms half-sine) - enabling reliable protection in high-energy transient environments without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 17.1 V / 18.9 V at 1 mA - defines precise voltage threshold where clamping initiates, critical for matching system rail tolerance |
| VWM | 15.3 V - maximum continuous reverse working voltage before leakage exceeds 1 µA, ensuring no false triggering during normal operation |
| VC @ IPPM | 25.2 V at 59.5 A - clamped voltage seen by protected circuit during worst-case surge, directly limiting stress on downstream components |
| PPPM | 1500 W - peak transient energy absorption capability under standardized 10/1000 µs pulse, enabling single-device protection for 24 V industrial buses |
| TJ max | +175 °C - maximum junction temperature allowing operation in under-hood automotive or high-ambient industrial enclosures without derating |
| RθJL | 15.4 °C/W - thermal resistance from junction to lead, supporting direct PCB copper pour heatsinking without external heatsink |
| IFSM | 200 A - peak non-repetitive forward surge current handling, essential for surviving load-dump events in 12 V vehicle systems |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102 solderability standards. Cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point during surge conduction | Connected to protected line side; must be routed with low-inductance trace to minimize overshoot during clamping |
| Cathode | Reverse-biased terminal during normal operation; clamping node during overvoltage | Marked with band; tied to ground or lower-potential rail - determines polarity of protection path |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control units and body electronics requiring zero-failure field performance |
| 1500 W peak pulse power (10/1000 µs) | Supports single-device protection for ISO 7637-2 Pulse 5a (load dump) in 12 V systems without parallel staging |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD or inductive kick), improving protection margin for 3.3 V/5 V logic |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability assemblies, eliminating latent short-circuit risk in sealed automotive modules |
Applications
| Automotive Load-Dump Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Suppresses 12 V battery line transients up to 60 V during alternator load dump events in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input, clamping within <1 ns to limit stress on upstream regulators. Use Value: Withstands 200 A surge (8.3 ms) and clamps to 25.2 V, preventing regulator latch-up or MOSFET avalanche failure in ASIL-B systems. | Use Scenario: Protects 24 V digital input channels in programmable logic controllers from relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Mounted at connector interface to shunt induced transients before reaching optocoupler or microcontroller GPIO. Use Value: 15.3 V standoff ensures compatibility with 24 V nominal inputs; 1500 W rating handles repetitive 1 kV/500 A surge tests per IEC 61000-4-5 Level 4. |
| Telecom Power Supply Clamp | MOSFET Gate Driver Protection |
Use Scenario: Clamps overvoltage on -48 V telecom rectifier outputs caused by lightning-induced surges on remote feed lines. IC Role / Device Role / Timing Role: Unidirectional TVS connected cathode-to-rail, anode-to-ground to protect downstream DC-DC converters and monitoring ICs. Use Value: 17.1–18.9 V VBR range aligns with -48 V system derating margins; 175 °C TJmax supports operation in sealed outdoor cabinets. | Use Scenario: Shields high-side N-channel MOSFET gate drivers from Miller-induced voltage spikes during fast switching in motor inverters. IC Role / Device Role / Timing Role: Placed across gate-source terminals to clamp dv/dt-induced ringing exceeding ±20 V absolute maximum ratings. Use Value: 25.2 V clamping voltage prevents gate oxide breakdown; glass passivation ensures stable leakage below 1 µA at 15.3 V, avoiding driver quiescent current drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18A-E3/52 | DO-214AA package (SMB), 600 W PPPM, same VBR (17.1–18.9 V), but lower surge current (33.3 A) | Surface-mount only; unsuitable for through-hole legacy designs or high-current chassis grounding paths | Select when board space is constrained and peak surge energy is ≤600 W; verify thermal pad layout meets RθJA = 50 °C/W requirement |
| 1.5KE18AHE3_B | Same 1.5KE package, identical electrical specs, but HE3_B denotes AEC-Q101 qualification with revision B process control | No functional difference; differs only in internal lot traceability and test screening depth for automotive PPAP compliance | Choose for new automotive programs requiring full PPAP documentation; 1N6277HE3/73 remains valid for industrial/commercial use |
Compared with SMBJ18A-E3/52, the 1N6277HE3/73 provides 2.5× higher surge power handling and axial-leaded mechanical stability for chassis-level grounding; versus 1.5KE18AHE3_B, it shares identical protection performance but reflects earlier qualification revision - both meet AEC-Q101, yet differ in manufacturing traceability scope.
Availability
1N6277HE3/73 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, telecom power supplies, and MOSFET gate driver circuits requiring stable component supply across extended temperature and high-surge environments.
Supply support for 1N6277HE3/73 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, power handling, and automotive qualification.
The 1N6277HE3/73 belongs to the TRANSZORB® 1.5KE family - engineered specifically for high-energy transient suppression in harsh environments where sustained surge immunity and AEC-Q101 validation are mandatory.
FAQ
What is the breakdown voltage range of the 1N6277HE3/73?
The 1N6277HE3/73 has a guaranteed breakdown voltage (VBR) range of 17.1 V to 18.9 V at a test current of 1 mA, measured per JEDEC standard. This tight tolerance ensures predictable clamping onset across production lots and supports precise coordination with downstream overvoltage thresholds in 24 V systems. The value is confirmed in Vishay's Document Number 88301, Table on page 2.
Is the 1N6277HE3/73 suitable for automotive applications?
Yes, the 1N6277HE3/73 is AEC-Q101 qualified, as indicated by the HE3 suffix and confirmed in Vishay's datasheet revision 09-Aug-2022. It undergoes stress testing for temperature cycling, humidity, and mechanical shock required for under-hood and body-control module deployment. The 1N6277HE3/73 is rated for operation from –55 °C to +175 °C, meeting automotive junction temperature requirements.
What is the clamping voltage of the 1N6277HE3/73 at its rated peak pulse current?
The 1N6277HE3/73 clamps to a maximum of 25.2 V at its rated peak pulse current of 59.5 A (10/1000 µs waveform). This value represents the upper limit of voltage imposed on protected circuitry during worst-case surge events and is critical for verifying safe operating margins of downstream ICs and MOSFETs. It is specified in the Electrical Characteristics table on page 2 of Document 88301.
Does the 1N6277HE3/73 have a bidirectional variant?
No, the 1N6277HE3/73 is strictly unidirectional. Bidirectional variants in the same voltage grade use the "CA" suffix (e.g., 1N6277CA), but those are distinct part numbers with different polarity construction and marking. The 1N6277HE3/73 features a cathode band and is intended for DC rail protection where polarity is fixed - using it in bidirectional AC applications would result in forward conduction and failure.
What package type does the 1N6277HE3/73 use, and what are its key mechanical features?
The 1N6277HE3/73 uses the JEDEC DO-201AD package (Case Style 1.5KE), with axial leads, molded epoxy body meeting UL 94 V-0 flammability rating, and matte tin-plated leads compliant to J-STD-002. Its dimensions include 0.375" (9.5 mm) lead length and 0.210" (5.3 mm) body diameter. The HE3 suffix confirms JESD 201 Class 2 whisker resistance - critical for long-life automotive modules.
1N6277HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14.5V
- Voltage - Breakdown (Min):
- 16.2V
- Voltage - Clamping (Max) @ Ipp:
- 26.5V
- Current - Peak Pulse (10/1000µs):
- 56.6A
- 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
1N6277HE3/73 FAQ
1.How can I place an order for 1N6277HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6277HE3/73 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 1N6277HE3/73 reliable?
The price and inventory of 1N6277HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6277HE3/73 is usually 5 days.
3.What payment methods are accepted for 1N6277HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6277HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6277HE3/73?
1N6277HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6277HE3/73 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 1N6277HE3/73?
For technical support, including 1N6277HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6277HE3/73 requirements.
6.How does Aetrix verify that 1N6277HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1N6277HE3/73 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 1N6277HE3/73 meets industry standards.
7.What is the process for return or replacement of 1N6277HE3/73?
All 1N6277HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6277HE3/73, 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 1N6277HE3/73 part is unused and in its original packaging.
Return procedure for 1N6277HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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