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Vishay General Semiconductor - Diodes Division 1N6279AHE3_B/C
- Part No.:
- 1N6279AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6279AHE3_B/C.pdf
- Description:
- 1.5KW,22V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,135
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Product details
Overview
1N6279AHE3_B/C from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in power rails and signal lines. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 30.6 V maximum clamping voltage (VC) at 49 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1N6279AHE3_B/C datasheet, 1N6279AHE3_B/C pinout, 1N6279AHE3_B/C application, or 1N6279AHE3_B/C equivalent, this part delivers verified AEC-Q101 qualification (HE3 suffix), RoHS-compliant matte tin-plated leads, 175 °C max junction temperature, and UL 94 V-0 molded epoxy package - critical for automotive, industrial, and telecom surge protection design validation.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1000 µA leakage at 18.8 V), then switches to low-impedance conduction within <1 ns when transient voltage exceeds its 22 V breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance.
Rated for 1500 W peak pulse power (10/1000 µs), it sustains 200 A non-repetitive forward surge (8.3 ms half-sine) and exhibits 0.092 %/°C VBR temperature coefficient - enabling predictable clamping behavior across -55 °C to +175 °C operating range without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 20.9–23.1 V at 1 mA - defines precise clamping initiation threshold for overvoltage events |
| Stand-off Voltage VWM | 18.8 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| Clamping Voltage VC | 30.6 V at 49 A IPPM - limits transient voltage seen by protected circuitry during 1500 W surge |
| Peak Pulse Power PPPM | 1500 W (10/1000 µs) - enables robust protection against IEC 61000-4-5 Level 4 surges |
| Junction Temperature Range | -55 °C to +175 °C - supports under-hood automotive and industrial ambient environments |
| AEC-Q101 Qualified | Yes (HE3 suffix) - validated for automotive electronics per stress test requirements |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 rated epoxy |
Pinout & Package
1N6279AHE3_B/C uses a 2-terminal axial-leaded DO-201AD (Case Style 1.5KE) package. The cathode is marked by a color band on the body; polarity must be observed for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side reference in clamping configuration |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line - conducts surge current to ground when VLINE > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures ±5% VBR tolerance and long-term stability under thermal cycling |
| 1500 W peak pulse power | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive systems |
| AEC-Q101 qualification (HE3) | Validated for automotive-grade reliability including HTOL, temperature cycling, and HAST |
| UL 94 V-0 epoxy molding | Provides flame-retardant mechanical encapsulation for safety-critical applications |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD 22-B102, with JESD 201 Class 2 whisker resistance |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between power rail and chassis ground. Use Value: Clamps transients to ≤30.6 V within 1 ns, preventing damage to 36 V-rated DC-DC controllers and CAN transceivers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) parallel protector on differential or single-ended signal lines. Use Value: Limits induced voltage to safe levels while preserving signal integrity due to sub-nanosecond response and minimal leakage (<1 µA). |
| Telecom Line Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Front-end protection of PoE-powered Ethernet ports against lightning-induced surges on twisted-pair cables. IC Role / Device Role / Timing Role: Primary-stage TVS on DC input side of isolated DC-DC converter. Use Value: Absorbs up to 1500 W surge energy without degradation, maintaining isolation barrier integrity and meeting GR-1089-CORE requirements. |
Use Scenario: Secondary-side overvoltage suppression in AC-DC adapters for smart home devices. IC Role / Device Role / Timing Role: Standoff-rated (18.8 V) clamp on 24 V output rail to protect downstream USB-PD controllers. Use Value: Prevents latch-up or burnout of downstream ICs during output short-circuit recovery or transformer ringing events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A-E3/52 | Lower PPPM (600 W), smaller SMB package (surface-mount), 22 V VBR, 35.5 V VC at 17 A | Not AEC-Q101 qualified; suited for space-constrained PCBs where 1500 W rating is not required | Select when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 3 |
| 1.5KE22AHE3_B/C | Identical electrical specs and AEC-Q101 qualification; same 1.5KE package, same VBR/VC/PPPM ratings | No functional difference - dual manufacturer part numbering (1N6279A and 1.5KE22A denote same device) | Direct cross-reference; interchangeable in BOMs and procurement - no design change needed |
Compared with 1N6279AHE3_B/C, SMBJ22A-E3/52 offers footprint savings but sacrifices 60% peak power handling and automotive qualification; 1.5KE22AHE3_B/C is electrically and mechanically identical - enabling seamless sourcing flexibility without layout or reliability impact.
Availability
1N6279AHE3_B/C is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor modules, telecom infrastructure equipment, and consumer power adapters requiring stable component supply with full traceability and lifecycle management.
Supply support for 1N6279AHE3_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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The 1N6279AHE3_B/C belongs to Vishay's TRANSZORB® TVS family - engineered specifically for high-energy transient suppression in harsh environments where fast response, stable clamping, and AEC-Q101 compliance are mandatory.
FAQ
What is the breakdown voltage tolerance for 1N6279AHE3_B/C?
The 1N6279AHE3_B/C has a specified breakdown voltage range of 20.9 V to 23.1 V at 1 mA test current, representing a ±5% tolerance around the nominal 22 V rating. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable system-level surge margining in designs using the 1N6279AHE3_B/C.
Is 1N6279AHE3_B/C suitable for automotive applications?
Yes, 1N6279AHE3_B/C is AEC-Q101 qualified (denoted by the HE3 suffix) and tested for automotive-grade reliability including high-temperature operating life, temperature cycling, and humidity testing. Its 175 °C max junction temperature and robust 1500 W surge capability make it appropriate for engine control units, body electronics, and ADAS power rail protection using the 1N6279AHE3_B/C.
What is the maximum clamping voltage of 1N6279AHE3_B/C at rated peak pulse current?
The 1N6279AHE3_B/C clamps to a maximum of 30.6 V at its rated peak pulse current of 49 A (10/1000 µs waveform). This value - measured as VC - defines the highest voltage imposed on protected circuitry during worst-case surge events, directly enabling safe interface design with 36 V-tolerant ICs and MOSFETs when using the 1N6279AHE3_B/C.
Does 1N6279AHE3_B/C have a bidirectional variant?
No, 1N6279AHE3_B/C is unidirectional only. Bidirectional variants in the same family use the "CA" suffix (e.g., 1N6279CA), but those are distinct part numbers. The "A" suffix in 1N6279AHE3_B/C explicitly denotes unidirectional polarity, confirmed by the cathode band marking and absence of bidirectional specifications in its datasheet entries - a key distinction when selecting the correct 1N6279AHE3_B/C for circuit topology.
What package type does 1N6279AHE3_B/C use, and what are its key mechanical features?
The 1N6279AHE3_B/C uses the axial-leaded DO-201AD package (Case Style 1.5KE), featuring a UL 94 V-0 rated epoxy body, 0.375" (9.5 mm) lead length, and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Its glass-passivated junction and JEDEC-standard outline ensure mechanical robustness and solderability - essential for through-hole assembly in high-reliability applications using the 1N6279AHE3_B/C.
1N6279AHE3_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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 49A
- 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
1N6279AHE3_B/C FAQ
1.How can I place an order for 1N6279AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6279AHE3_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 1N6279AHE3_B/C reliable?
The price and inventory of 1N6279AHE3_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 1N6279AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1N6279AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6279AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6279AHE3_B/C?
1N6279AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6279AHE3_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 1N6279AHE3_B/C?
For technical support, including 1N6279AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6279AHE3_B/C requirements.
6.How does Aetrix verify that 1N6279AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1N6279AHE3_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 1N6279AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1N6279AHE3_B/C?
All 1N6279AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1N6279AHE3_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 1N6279AHE3_B/C part is unused and in its original packaging.
Return procedure for 1N6279AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6279AHE3_B/C Tags
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