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Vishay General Semiconductor - Diodes Division 1N6277AHE3_B/C
- Part No.:
- 1N6277AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6277AHE3_B/C.pdf
- Description:
- 1.5KW,18V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,102
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Product details
Overview
1N6277AHE3_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 17.1 V to 18.9 V breakdown voltage (VBR) at 1 mA, 15.3 V maximum standoff voltage (VWM), 1500 W peak pulse power (10/1000 µs), 59.5 A peak pulse current (IPPM), and clamps to 25.2 V at rated surge. It is used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control modules.
For engineers reviewing the 1N6277AHE3_B/C datasheet, 1N6277AHE3_B/C pinout, 1N6277AHE3_B/C application, or 1N6277AHE3_B/C equivalent, this device delivers verified transient suppression for 24 V system rails, meets AEC-Q101 qualification (HE3 suffix), supports RoHS-compliant soldering per J-STD-002, and provides low incremental clamping voltage with sub-nanosecond response time.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector, activating when reverse voltage exceeds its VBR threshold to divert surge energy away from downstream circuitry. Its glass-passivated junction ensures stable leakage performance, while the molded epoxy case (UL 94 V-0 rated) enables reliable operation across -55 °C to +175 °C junction temperature range.
The device complies with JEDEC standards for transient suppression and exhibits 0.089 %/°C temperature coefficient of VBR, enabling predictable clamping behavior under thermal variation. Its 15.4 °C/W junction-to-lead thermal resistance supports effective heat dissipation during repetitive surge events without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 17.1 V / 18.9 V at 1 mA - defines precise activation threshold for overvoltage triggering |
| VWM | 15.3 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| IPPM | 59.5 A (10/1000 µs waveform) - peak surge current it safely clamps without failure |
| VC | 25.2 V at IPPM - clamping voltage seen by protected circuit during full-rated surge |
| PPPM | 1500 W - peak transient power handling capacity under standardized impulse conditions |
| TJ max | +175 °C - maximum junction temperature enabling use in under-hood automotive environments |
| Leakage (ID) | 1.0 μA at VWM - negligible standby current that avoids loading sensitive source circuits |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, epoxy-molded body with matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Marked with color band; connected to protected line (e.g., 24 V rail or signal input) |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and low long-term parameter drift under thermal cycling |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| 1500 W peak pulse power (10/1000 µs) | Handles high-energy transients from inductive switching or load dump without degradation |
| Sub-nanosecond response time | Clamps within <1 ns to protect fast-edge logic and analog front-ends before damage occurs |
| UL 94 V-0 flammability rating | Mold compound self-extinguishes under flame exposure, supporting safety-critical end equipment certification |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against load-dump transients up to 40 V and ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between VIN and ground, activated only during overvoltage events. Use Value: Limits voltage to ≤25.2 V during 59.5 A surges, preventing gate oxide rupture in downstream PMOS high-side switches. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to field-wiring induced surges. IC Role / Device Role / Timing Role: Front-end transient suppressor mounted directly at connector entry point, ahead of optocoupler or Schmitt trigger interface. Use Value: Clamps 1 kV/500 A lightning-induced transients (per IEC 61000-4-5) while maintaining <1 μA leakage at 24 V nominal. |
| DC Motor Drive Gate Protection | Sensor Signal Line Protection |
Use Scenario: Shielding half-bridge gate drivers in brushed DC motor controllers from inductive kickback during PWM commutation. IC Role / Device Role / Timing Role: Localized TVS placed across driver output pins (e.g., HO/LO to ground) to absorb flyback energy. Use Value: Responds in <1 ns to suppress >100 V spikes, preserving gate drive integrity and preventing shoot-through in MOSFET pairs. |
Use Scenario: Securing analog outputs of pressure or temperature sensors in factory automation systems subject to ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on signal line (e.g., 4–20 mA loop or 0–5 V output) referenced to local ground. Use Value: Maintains signal fidelity with <1 μA leakage and clamps ±15 kV contact ESD (IEC 61000-4-2) to safe levels below ADC input limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18A-E3/52 | DO-214AA package (smaller footprint), 18 V VBR, 600 W PPPM, 33.2 A IPPM | Limited to lower-energy transients; unsuitable for automotive load dump or industrial 10/1000 µs surges | Select when board space is constrained and surge requirements are ≤600 W. |
| 1.5KE18AHE3_B/C | Same electrical specs and package as 1N6277AHE3_B/C; identical part number family with JEDEC-registered prefix | No functional or application difference - dual-marking variant per Vishay documentation | Direct form-fit-function replacement; same AEC-Q101 qualification and thermal performance. |
Compared with SMBJ18A-E3/52, 1N6277AHE3_B/C delivers 2.5× higher peak pulse power and superior thermal robustness for demanding 24 V systems; compared with 1.5KE18AHE3_B/C, it is electrically and mechanically identical-differing only in manufacturer-assigned base part numbering convention.
Availability
1N6277AHE3_B/C is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, DC motor drives, and sensor interface modules requiring stable component supply with AEC-Q101 qualification and long-lifecycle support.
Supply support for 1N6277AHE3_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, and protection devices with emphasis on reliability, power efficiency, and automotive-grade validation.
The 1N6277AHE3_B/C belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh-environment applications including automotive power distribution and industrial control systems.
FAQ
What is the breakdown voltage range of the 1N6277AHE3_B/C?
The 1N6277AHE3_B/C has a specified 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 consistent clamping behavior across production lots and supports reliable design margining for 24 V nominal systems where overvoltage thresholds must be precisely controlled.
Is the 1N6277AHE3_B/C qualified for automotive applications?
Yes, the 1N6277AHE3_B/C carries the HE3 suffix, indicating full AEC-Q101 qualification per Vishay documentation. It is validated for automotive use including temperature cycling, mechanical shock, and humidity testing, making it suitable for under-hood and chassis-mounted applications such as body control modules and powertrain subsystems.
What does the "HE3_B/C" suffix mean in 1N6277AHE3_B/C?
The "HE3" denotes RoHS compliance and AEC-Q101 qualification; "B/C" indicates packaging in 13-inch paper tape and reel with a base quantity of 1400 units. The "B" refers to revision level B of the HE3 qualification, and "C" specifies the preferred package code per Vishay's ordering nomenclature.
How does the 1N6277AHE3_B/C compare to bidirectional TVS diodes?
The 1N6277AHE3_B/C is unidirectional and intended for DC rail protection where polarity is fixed (e.g., +24 V to ground). Unlike bidirectional variants (e.g., 1N6277CA), it blocks forward current above ~3.5 V but offers no protection against positive transients on grounded lines-requiring correct orientation during placement.
What is the maximum clamping voltage of the 1N6277AHE3_B/C at rated surge current?
The 1N6277AHE3_B/C clamps to a maximum of 25.2 V when subjected to its rated 59.5 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is critical for ensuring protected components-such as 30 V-rated MOSFETs or 28 V-input regulators-remain within absolute maximum ratings during surge events.
1N6277AHE3_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):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.2V
- Current - Peak Pulse (10/1000µs):
- 59.5A
- 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
1N6277AHE3_B/C FAQ
1.How can I place an order for 1N6277AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6277AHE3_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 1N6277AHE3_B/C reliable?
The price and inventory of 1N6277AHE3_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 1N6277AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1N6277AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6277AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6277AHE3_B/C?
1N6277AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6277AHE3_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 1N6277AHE3_B/C?
For technical support, including 1N6277AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6277AHE3_B/C requirements.
6.How does Aetrix verify that 1N6277AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1N6277AHE3_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 1N6277AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1N6277AHE3_B/C?
All 1N6277AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1N6277AHE3_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 1N6277AHE3_B/C part is unused and in its original packaging.
Return procedure for 1N6277AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6277AHE3_B/C Tags
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