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Vishay General Semiconductor - Diodes Division 1N6282AHE3/51
- Part No.:
- 1N6282AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6282AHE3/51.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,841
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Product details
Overview
1N6282AHE3/51 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 30 V breakdown voltage (VBR = 28.5–31.5 V at 1.0 mA), 25.6 V maximum stand-off voltage (VWM), 41.4 V clamping voltage at 36.2 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the 1N6282AHE3/51 datasheet, 1N6282AHE3/51 pinout, 1N6282AHE3/51 application, or 1N6282AHE3/51 equivalent, this device is selected for robust transient suppression in automotive ECUs, industrial sensor interfaces, and DC-DC converter input protection where fast response (<1 ns), low clamping ratio, and high surge current tolerance are critical.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 25.6 V), but triggers into low-impedance conduction when transient voltage exceeds VBR, diverting surge current away from downstream ICs. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
The device uses a DO-201AD package with axial leads, supports uni-directional polarity (cathode marked by band), and is rated for 175 °C maximum junction temperature. Thermal resistance is 15.4 °C/W (junction-to-lead), enabling effective heat dissipation during repetitive transients when mounted on PCB copper pours.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V at 1.0 mA - defines precise voltage threshold for reliable clamping onset without false triggering |
| VWM | 25.6 V - maximum continuous working voltage; ensures zero DC leakage in 24 V nominal systems |
| VC @ IPPM | 41.4 V at 36.2 A - clamping voltage limits stress on protected MOSFETs or microcontrollers during 10/1000 µs surges |
| PPPM | 1500 W - handles lightning-induced surges per IEC 61000-4-5 Level 4 (4 kV) without degradation |
| IFSM | 200 A (8.3 ms half-sine) - withstands high-energy inductive switch-off events in motor drivers and solenoid controls |
| TJ max | 175 °C - enables operation in under-hood automotive environments and industrial enclosures without derating |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: DO-201AD (axial lead, molded epoxy body, UL 94 V-0 rated). Cathode indicated by color band on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to system ground or low-side return path; used only during fault clamping in uni-directional configuration |
| Cathode | Current exit point during reverse-biased clamping | Connected to protected line (e.g., 24 V rail); absorbs surge energy by shunting to ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over temperature and lifetime; eliminates parameter drift in harsh environments |
| 1500 W peak pulse power (10/1000 µs) | Provides single-event surge immunity exceeding IEC 61000-4-5 Ed.3 4 kV open-circuit test level |
| Clamping ratio (VC/VBR) ≈ 1.40 | Minimizes overvoltage stress on protected ICs-critical for 3.3 V/5 V logic interfacing with 24 V systems |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control, body electronics, and ADAS sensor modules |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and JESD 22-B102; supports lead-free reflow and wave soldering |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs of engine control units (ECUs) against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between battery rail and DC-DC converter input. Use Value: Clamps 120 V/100 ms load dump spikes to ≤41.4 V, preventing damage to downstream PMICs and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Line-end TVS on 4–20 mA current loop or 0–10 V analog output traces. Use Value: Responds in <1 ns to ESD (IEC 61000-4-2 ±8 kV contact) and inductive kickback, preserving signal integrity and ADC accuracy. |
| DC-DC Converter Input Protection | Telecom Power Feeding Protection |
Use Scenario: Input-stage surge protection for isolated 24 V to 5 V buck converters in industrial gateways. IC Role / Device Role / Timing Role: Primary overvoltage clamp before input filter capacitor and controller IC. Use Value: Limits transient voltage to 41.4 V during 1.5 kV ring wave (IEC 61000-4-12), avoiding MOSFET avalanche failure. |
Use Scenario: Protection of PoE-powered equipment (e.g., IP cameras) against induced surges on 48 V feeding lines. IC Role / Device Role / Timing Role: Uni-directional TVS on PSE-side feed line to absorb common-mode transients. Use Value: Withstands 1500 W surges while maintaining VWM = 25.6 V margin above 48 V nominal, ensuring no false triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A-E3/52 | Lower PPPM (600 W), smaller SMB package (surface-mount), VBR = 36.7–40.6 V, VC = 53.3 V @ 11.3 A | Better suited for space-constrained PCBs; lower clamping performance limits use to sub-2 kV surge environments | Select when board area is constrained and surge threat level is ≤IEC 61000-4-5 Level 3 (2 kV) |
| 1.5KE33AHE3/54 | Same DO-201AD package, identical AEC-Q101 qualification, but VBR = 31.4–34.7 V, VC = 45.7 V @ 32.8 A | Higher clamping voltage increases stress on protected devices; suitable only where higher VWM (28.2 V) is acceptable | Choose only if system operating voltage exceeds 25.6 V and design tolerates 45.7 V clamping |
Compared with 1N6282AHE3/51, SMBJ33A-E3/52 trades surge capacity for footprint reduction, while 1.5KE33AHE3/54 maintains package compatibility but raises clamping voltage by 4.3 V-reducing safety margin for 24 V systems.
Availability
1N6282AHE3/51 is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor interface modules, and DC-DC converter input protection requiring stable component supply across multi-year production cycles.
Supply support for 1N6282AHE3/51 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, AEC-Q qualification, and high-power handling.
The 1N6282AHE3/51 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where failure modes must be mitigated without compromising signal integrity.
FAQ
What is the breakdown voltage tolerance of the 1N6282AHE3/51?
The 1N6282AHE3/51 has a specified breakdown voltage range of 28.5 V to 31.5 V at a test current of 1.0 mA. This ±5% tolerance ensures consistent clamping behavior across production lots and supports reliable design margins in 24 V systems where VWM = 25.6 V provides 2.4 V headroom below minimum VBR.
Is the 1N6282AHE3/51 suitable for bidirectional transient protection?
No, the 1N6282AHE3/51 is a uni-directional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the 1N6282CAHE3/54 variant. Using the 1N6282AHE3/51 in AC or floating-line applications would result in forward conduction during negative transients and potential failure.
What is the maximum clamping voltage of the 1N6282AHE3/51 under surge conditions?
The 1N6282AHE3/51 clamps to a maximum of 41.4 V at its rated peak pulse current of 36.2 A (10/1000 µs waveform). This value is guaranteed across temperature and lifetime, and represents the highest voltage seen by protected circuitry during worst-case transient events.
Does the 1N6282AHE3/51 meet automotive qualification standards?
Yes, the 1N6282AHE3/51 carries the HE3 suffix, confirming full AEC-Q101 qualification per Vishay Document Number 88301. It has passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT), making it approved for under-hood and chassis-mounted automotive applications.
How does the thermal resistance of the 1N6282AHE3/51 affect its surge handling capability?
The 1N6282AHE3/51 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W. This low value allows rapid heat transfer from the silicon junction to PCB copper or heatsinking leads, sustaining repetitive surge events without thermal runaway-especially critical in automotive modules with limited airflow and ambient temperatures up to 125 °C.
1N6282AHE3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 36.2A
- 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
1N6282AHE3/51 FAQ
1.How can I place an order for 1N6282AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6282AHE3/51 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 1N6282AHE3/51 reliable?
The price and inventory of 1N6282AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6282AHE3/51 is usually 5 days.
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1N6282AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6282AHE3/51 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 1N6282AHE3/51?
For technical support, including 1N6282AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6282AHE3/51 requirements.
6.How does Aetrix verify that 1N6282AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6282AHE3/51 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 1N6282AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1N6282AHE3/51?
All 1N6282AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6282AHE3/51, 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 1N6282AHE3/51 part is unused and in its original packaging.
Return procedure for 1N6282AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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