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Vishay General Semiconductor - Diodes Division 1N6274AHE3_B/C
- Part No.:
- 1N6274AHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6274AHE3_B/C.pdf
- Description:
- 1.5KW,13V 5%,UNIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,242
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Product details
Overview
1N6274AHE3_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 12.4 V to 13.7 V breakdown voltage (VBR) at 1.0 mA test current, 11.1 V maximum standoff voltage (VWM), 18.2 V clamping voltage (VC) at 82.4 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.
For engineers reviewing the 1N6274AHE3_B/C datasheet, 1N6274AHE3_B/C pinout, 1N6274AHE3_B/C application, or 1N6274AHE3_B/C equivalent, this part delivers verified transient suppression for 12 V rail protection where fast response (<1 ns), low clamping ratio (VC/VWM ≈ 1.64), and AEC-Q101 qualification (HE3 suffix) are required in automotive body electronics and industrial control I/O modules.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below VWM (11.1 V), then avalanches sharply at VBR (min 12.4 V) to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<5 µA at VWM).
It is rated for 1500 W peak pulse power (10/1000 µs), supports 200 A non-repetitive forward surge (8.3 ms half-sine), and exhibits 0.081 %/°C temperature coefficient of VBR. Thermal resistance is 15.4 °C/W junction-to-lead, enabling reliable operation up to TJ = 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 12.4 V min / 13.7 V max at 1.0 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| Standoff Voltage VWM | 11.1 V max - ensures no conduction during normal 12 V rail operation, minimizing standby leakage |
| Clamping Voltage VC | 18.2 V at 82.4 A IPPM - limits transient voltage seen by protected ICs to safe margin below absolute maximum ratings |
| Peak Pulse Power PPPM | 1500 W (10/1000 µs) - sustains high-energy surges such as ISO 7637-2 Pulse 1/2a without degradation |
| Operating Temperature | -55 °C to +175 °C - supports under-hood automotive and industrial environments without derating |
| Leakage Current ID | <5 µA at VWM - prevents measurable power loss or false triggering in low-power sensor circuits |
| Thermal Resistance RθJL | 15.4 °C/W - enables effective heat transfer to PCB copper or heatsink for repetitive surge handling |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads; RoHS-compliant HE3 suffix indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or return path; forms cathode-to-anode avalanche path during overvoltage |
| Cathode | Protected line input | Connected to 12 V rail or signal line; color band denotes cathode end per JEDEC standard |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 1500 W peak pulse rating | Withstands automotive load dump (ISO 16750-2) and inductive switching transients without failure |
| AEC-Q101 qualified (HE3) | Validated for automotive applications including body control modules and power distribution units |
| Fast response time <1 ns | Clamps before sensitive CMOS inputs or gate drivers experience destructive overvoltage |
| Low incremental surge resistance | Minimizes VC overshoot during high-di/dt events, improving protection margin for 12 V logic |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protecting microcontroller GPIO and CAN transceiver power pins from load dump and alternator ripple in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Shunt clamping device placed between VCC and GND on 12 V supply rail upstream of LDO regulators. Use Value: Limits transient voltage to ≤18.2 V during 100 V/500 ms load dump, preventing latch-up or oxide breakdown in 20 V-rated MCUs. |
Use Scenario: Safeguarding 24 V digital input optocoupler front-end against field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Primary overvoltage clamp on the 24 V bus feeding input conditioning circuitry. Use Value: Clamps 1 kV/1.2 × 50 µs surges to <20 V within 1 ns, preserving optocoupler CTR and enabling >100 kV/µs immunity per IEC 61000-4-5 Level 3. |
| Telecom Remote Radio Unit (RRU) Power Interface | Consumer Appliance Motor Drive Board |
Use Scenario: Securing DC-DC converter input stage in outdoor base station equipment exposed to lightning-induced surges on -48 V telecom lines. IC Role / Device Role / Timing Role: First-line transient suppressor on -48 V input before EMI filter and primary FETs. Use Value: Absorbs 1500 W pulses without thermal runaway, maintaining <10 µA leakage at -48 V to avoid battery drain in backup systems. |
Use Scenario: Shielding MCU reset and communication lines from commutation noise generated by brushed DC motors in washing machines. IC Role / Device Role / Timing Role: Localized clamping element on 3.3 V/5 V logic rails adjacent to motor driver ICs. Use Value: Responds in <1 ns to 400 V spikes from motor back-EMF, limiting voltage excursion to 18.2 V and preventing false resets or UART corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Lower PPPM (400 W), SMC package (smaller footprint), VBR = 13.3–14.7 V, VC = 19.9 V at 20.1 A | Not AEC-Q101 qualified; suitable for cost-sensitive consumer designs but not automotive-grade reliability requirements | Select when board space is constrained and surge energy is limited to IEC 61000-4-5 Level 2 |
| 1.5KE13AHE3_A | Same electrical specs and 1.5KE package, but HE3_A revision (older AEC-Q101 qualification batch; B/C denotes newer revision with enhanced process control) | Identical functional use; differs only in manufacturing lot traceability and whisker test compliance level (Class 2 vs Class 1A) | Prefer 1N6274AHE3_B/C for new designs requiring latest AEC-Q101 revision and JESD 201 Class 2 whisker resistance |
Compared with SMAJ12A and 1.5KE13AHE3_A, the 1N6274AHE3_B/C provides higher surge robustness (1500 W vs 400 W), automotive-grade qualification (AEC-Q101 HE3_B/C), and tighter VBR tolerance - making it optimal for mission-critical 12 V rail protection where failure modes demand proven high-energy clamping and long-lifecycle validation.
Availability
1N6274AHE3_B/C is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, telecom power interfaces, and appliance motor control systems requiring stable component supply across multi-year production cycles.
Supply support for 1N6274AHE3_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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The 1N6274AHE3_B/C belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against lightning, ESD, and load dump is non-negotiable.
FAQ
What is the exact breakdown voltage range for 1N6274AHE3_B/C?
The 1N6274AHE3_B/C has a guaranteed breakdown voltage (VBR) range of 12.4 V minimum to 13.7 V maximum when tested at 1.0 mA DC current, per Vishay Document 88301. This tight 10.2% tolerance ensures consistent clamping behavior across production lots and temperature extremes, critical for protecting 12 V systems where overvoltage margins are narrow. The 1N6274AHE3_B/C maintains this specification under AEC-Q101 stress conditions.
Is 1N6274AHE3_B/C unidirectional or bidirectional?
The 1N6274AHE3_B/C is a unidirectional Transient Voltage Suppressor, indicated by the "A" suffix in its part number and confirmed by its single-color band marking (cathode identification). It conducts only in reverse bias above VBR, making it suitable for DC rail protection where polarity is fixed - unlike bidirectional variants (e.g., 1N6274CA) used in AC or differential signal lines. The 1N6274AHE3_B/C datasheet explicitly lists it in the unidirectional column of Table 1.
Does 1N6274AHE3_B/C meet AEC-Q101 qualification?
Yes, the "HE3" suffix in 1N6274AHE3_B/C confirms full AEC-Q101 qualification per Vishay Document 88301, Note (2). This includes stress testing for temperature cycling, humidity bias, high-temperature operating life, and mechanical shock - validated for automotive under-hood applications. The "B/C" revision denotes the latest qualified manufacturing release, with JESD 201 Class 2 whisker resistance and RoHS compliance built into the 1N6274AHE3_B/C production process.
What is the clamping voltage of 1N6274AHE3_B/C at rated surge current?
The 1N6274AHE3_B/C clamps to a maximum of 18.2 V at its rated peak pulse current (IPPM) of 82.4 A, measured using the standardized 10/1000 µs double-exponential waveform. This clamping voltage is guaranteed across the full operating temperature range (-55 °C to +175 °C) and defines the upper voltage limit imposed on protected circuitry during surge events. The 1N6274AHE3_B/C achieves this with a low clamping ratio (VC/VWM = 1.64), enhancing system-level robustness.
What package type does 1N6274AHE3_B/C use?
The 1N6274AHE3_B/C uses the industry-standard Case Style 1.5KE package: a molded epoxy axial-leaded device with 0.375" (9.5 mm) lead length, 0.210"–0.285" body diameter, and matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. This through-hole package provides superior thermal dissipation (RθJL = 15.4 °C/W) and mechanical robustness compared to surface-mount alternatives, and is explicitly documented in the "MECHANICAL DATA" section of the 1N6274AHE3_B/C datasheet.
1N6274AHE3_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):
- 11.1V
- Voltage - Breakdown (Min):
- 12.4V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 82.4A
- 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
1N6274AHE3_B/C FAQ
1.How can I place an order for 1N6274AHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6274AHE3_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 1N6274AHE3_B/C reliable?
The price and inventory of 1N6274AHE3_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 1N6274AHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1N6274AHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6274AHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6274AHE3_B/C?
1N6274AHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6274AHE3_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 1N6274AHE3_B/C?
For technical support, including 1N6274AHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6274AHE3_B/C requirements.
6.How does Aetrix verify that 1N6274AHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1N6274AHE3_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 1N6274AHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1N6274AHE3_B/C?
All 1N6274AHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1N6274AHE3_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 1N6274AHE3_B/C part is unused and in its original packaging.
Return procedure for 1N6274AHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6274AHE3_B/C Tags
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