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Vishay General Semiconductor - Diodes Division 1N6277HE3/54
- Part No.:
- 1N6277HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6277HE3/54.pdf
- Description:
- TVS DIODE 14.5VWM 26.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,596
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Product details
Overview
1N6277HE3/54 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 18 V breakdown voltage (VBR = 17.1–18.9 V at 1.0 mA), 15.3 V stand-off voltage (VWM), 25.2 V clamping voltage (VC) at 59.5 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control modules.
For engineers reviewing the 1N6277HE3/54 datasheet, 1N6277HE3/54 pinout, 1N6277HE3/54 application, or 1N6277HE3/54 equivalent, this part delivers verified transient suppression for 24 V system rails, meets AEC-Q101 qualification (HE3 suffix), supports JEDEC 1.5KE package mounting, and provides low incremental surge resistance with sub-nanosecond response time.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches into low-impedance conduction to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and robust surge handling under repetitive 10/1000 µs transients at 0.01% duty cycle.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15.4 °C/W, enabling reliable operation up to TJ = 175 °C. The device exhibits 1.0 µA max reverse leakage at VWM, 3.5 V forward voltage at 100 A, and is rated for 200 A non-repetitive forward surge (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 17.1–18.9 V at 1.0 mA - defines precise avalanche initiation threshold for repeatable clamping onset |
| Stand-off Voltage VWM | 15.3 V - maximum continuous reverse operating voltage without significant leakage |
| Clamping Voltage VC | 25.2 V at 59.5 A IPPM - limits transient voltage seen by protected ICs during 10/1000 µs surges |
| Peak Pulse Power PPPM | 1500 W - sustains single 1 ms transients common in load dump or ESD events |
| Peak Pulse Current IPPM | 59.5 A - quantifies maximum surge current the device can safely divert |
| Operating Temperature Range | −55 °C to +175 °C - supports under-hood automotive and industrial ambient conditions |
| AEC-Q101 Qualified | Yes (HE3 suffix) - validated for automotive electronics reliability per stress test requirements |
Pinout & Package
Package: JEDEC 1.5KE molded epoxy case (Case Style 1.5KE), axial leaded, RoHS-compliant matte tin-plated leads. 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 in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line; avalanches when voltage exceeds VBR to shunt surge to anode |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 1500 W peak pulse power (10/1000 µs) | Handles high-energy transients such as ISO 7637-2 Load Dump pulses in 12/24 V systems |
| Sub-nanosecond response time | Clamps within <1 ns - faster than MOVs or polymer-based protectors, preserving signal integrity |
| AEC-Q101 qualified (HE3) | Validated for automotive applications including engine control units and body electronics |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, reducing stress on protected devices |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control modules against load dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role: Unidirectional shunt TVS placed between VIN and GND to clamp voltage spikes before they reach DC-DC converters and microcontrollers. Use Value: Limits transient voltage to ≤25.2 V at 59.5 A, preventing latch-up or gate oxide damage in downstream silicon. |
Use Scenario: Safeguarding analog input channels of programmable logic controllers exposed to field wiring surges. IC Role / Device Role: Primary overvoltage clamp on 4–20 mA loop or 0–10 V sensor interface lines. Use Value: Maintains signal integrity with 1.0 µA leakage at 15.3 V, while clamping lightning-induced surges to safe levels. |
| DC Motor Drive Gate Protection | Telecom Power Supply Input |
Use Scenario: Shielding high-side MOSFET gates from inductive kickback during PWM switching in H-bridge drivers. IC Role / Device Role: Localized TVS mounted directly at gate-source terminals to suppress dv/dt-induced false turn-on. Use Value: Fast 1 ns response prevents unintended conduction; 15.3 V VWM allows compatibility with 12 V gate drive rails. |
Use Scenario: Front-end surge suppression on −48 V telecom rectifier outputs subject to lightning-induced surges. IC Role / Device Role: Secondary clamping stage after bulk MOVs, providing precise voltage limiting for sensitive DC-DC stages. Use Value: Tight 17.1–18.9 V VBR tolerance enables predictable coordination with upstream protection components. |
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 | DO-214AA package, 600 W PPPM, lower IPPM (32.4 A), same VBR range (17.1–18.9 V) | Surface-mount only; unsuitable for through-hole legacy designs or high-current axial layouts | Select when board space is constrained and PCB assembly supports SMD reflow. |
| 1.5KE18A-E3/54 | Same electrical specs and 1.5KE package, but commercial-grade (E3) - not AEC-Q101 qualified | Lacks automotive qualification; limited to industrial/commercial environments where extended temperature validation is not required | Choose for cost-sensitive non-automotive applications where HE3-level reliability is unnecessary. |
Compared with SMBJ18A and 1.5KE18A-E3/54, the 1N6277HE3/54 uniquely combines AEC-Q101 qualification, 1500 W surge capability, and axial-leaded 1.5KE packaging - making it the only option among the three validated for under-hood automotive use with through-hole mounting and highest energy handling.
Availability
1N6277HE3/54 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, and telecom power supplies requiring stable component supply with full traceability and long-lifecycle support.
Supply support for 1N6277HE3/54 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 1N6277HE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure resilience is critical.
FAQ
What is the breakdown voltage tolerance of the 1N6277HE3/54?
The 1N6277HE3/54 has a specified breakdown voltage (VBR) range of 17.1 V to 18.9 V at 1.0 mA test current, representing ±5.6% tolerance about the nominal 18 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports precise coordination with system overvoltage thresholds in automotive and industrial designs.
Is the 1N6277HE3/54 suitable for bidirectional transient protection?
No, the 1N6277HE3/54 is a unidirectional TVS diode - it conducts only in reverse bias above VBR and blocks forward current like a standard diode. For bidirectional protection, Vishay offers variants with "CA" suffix (e.g., 1.5KE18CA); the 1N6277HE3/54 must be used with correct polarity orientation in the circuit to avoid forward conduction during normal operation.
What does the "HE3/54" suffix indicate in 1N6277HE3/54?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance; "/54" specifies packaging in 13-inch paper tape and reel with 1400 units per reel. This distinguishes it from commercial-grade E3 variants and confirms suitability for automotive production environments requiring full compliance documentation.
How does the clamping performance of 1N6277HE3/54 compare to MOV-based protectors?
The 1N6277HE3/54 clamps at 25.2 V (VC) for a 59.5 A 10/1000 µs surge, with sub-nanosecond response and no degradation over repeated events. In contrast, MOVs exhibit higher clamping voltages, slower response (>25 ns), and wear out after multiple surges. The 1N6277HE3/54 thus provides more precise, repeatable, and durable protection for sensitive semiconductor loads.
Can the 1N6277HE3/54 be used in parallel to increase surge current handling?
Yes - the 1N6277HE3/54 may be paralleled to distribute surge current, but requires careful layout: matched trace lengths, shared thermal mass, and derating per Vishay's application notes. Parallel operation increases total IPPM linearly only if VBR matching is within ±1% and thermal coupling is uniform; otherwise, current imbalance may cause premature failure of one device.
1N6277HE3/54 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:
- 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
1N6277HE3/54 FAQ
1.How can I place an order for 1N6277HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6277HE3/54 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 1N6277HE3/54 reliable?
The price and inventory of 1N6277HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6277HE3/54 is usually 5 days.
3.What payment methods are accepted for 1N6277HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6277HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6277HE3/54?
1N6277HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6277HE3/54 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 1N6277HE3/54?
For technical support, including 1N6277HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6277HE3/54 requirements.
6.How does Aetrix verify that 1N6277HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1N6277HE3/54 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 1N6277HE3/54 meets industry standards.
7.What is the process for return or replacement of 1N6277HE3/54?
All 1N6277HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6277HE3/54, 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 1N6277HE3/54 part is unused and in its original packaging.
Return procedure for 1N6277HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6277HE3/54 Tags
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