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Vishay General Semiconductor - Diodes Division 1N6287AHE3/51
- Part No.:
- 1N6287AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6287AHE3/51.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,999
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Product details
Overview
1N6287AHE3/51 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 47 V breakdown voltage (VBR = 44.7–49.4 V at IT = 1.0 mA), 40.2 V maximum stand-off voltage (VWM), 64.8 V clamping voltage (VC) at 23.1 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification - enabling use in automotive engine control units and industrial sensor interfaces.
For engineers reviewing the 1N6287AHE3/51 datasheet, 1N6287AHE3/51 pinout, 1N6287AHE3/51 application, or 1N6287AHE3/51 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, clamping performance under surge conditions, thermal derating behavior, and direct-fit alternatives for ESD and lightning transient protection in automotive-grade designs.
Technical Context
This 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 ICs. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM), while the 10/1000 µs waveform rating reflects standardized lightning-surge immunity testing per IEC 61000-4-5.
Thermal design relies on RθJL = 15.4 °C/W (junction-to-lead) and RθJA = 75 °C/W (junction-to-ambient), with power derating beginning above TA = 25 °C and full derating at TL = 75 °C. The device supports 200 A non-repetitive forward surge (8.3 ms half-sine) and maintains clamping stability across -55 °C to +175 °C operating junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA test current - defines precise avalanche onset threshold for reliable triggering |
| VWM | 40.2 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 64.8 V at 23.1 A - clamping voltage during 1500 W transient, limiting stress on protected circuitry |
| PPPM | 1500 W (10/1000 µs waveform) - industry-standard surge power rating for lightning and inductive-switching events |
| IFSM | 200 A (8.3 ms half-sine) - peak forward surge capability for accidental polarity reversal scenarios |
| TJ range | -55 °C to +175 °C - enables deployment in under-hood automotive and high-temp industrial environments |
| AEC-Q101 | Qualified - validated for automotive electronics per stress-test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. 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 plane during clamping; must handle 200 A surge |
| Cathode | Reverse-biased input / protected line connection | Connected to line being protected (e.g., 24 V rail); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 µA), and long-term reliability under thermal cycling |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation |
| AEC-Q101 qualification | Validated for automotive applications including powertrain, body control, and ADAS sensor modules |
| Low incremental surge resistance | Enables tight clamping (VC – VBR = 20.1 V) to minimize voltage overshoot on protected ICs |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive enclosures |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs of engine control units (ECUs) against load dump transients up to 35 V and ISO 7637-2 Pulse 5a. IC Role / Device Role: Shunt clamping element placed between battery rail and local regulator input. Use Value: Clamps transients to ≤64.8 V within nanoseconds, preventing damage to downstream LDOs and microcontrollers rated for 36 V max input. |
Use Scenario: Safeguarding analog outputs of pressure sensors in factory automation systems exposed to relay coil switching noise. IC Role / Device Role: Reverse-polarity and surge suppressor on 4–20 mA current loop output lines. Use Value: Limits induced spikes to <65 V while maintaining <1 µA leakage at 24 V nominal, preserving loop accuracy and sensor calibration. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Front-end protection for DSL line interface circuits subjected to longitudinal surges per GR-1089-CORE. IC Role / Device Role: Primary uni-directional clamp on tip/ring lines referenced to chassis ground. Use Value: Responds in <1 ns to divert >20 A surges, holding clamped voltage below 65 V to protect PHY transceivers and isolation transformers. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart home appliances (e.g., washing machine drum drives). IC Role / Device Role: Flyback diode replacement with enhanced surge handling across motor H-bridge supply rails. Use Value: Absorbs 1500 W pulses without failure, eliminating need for external snubbers while supporting AEC-Q101-compliant manufacturing traceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A-E3/52 | DO-214AA package (smaller footprint), same VBR (44.7–49.4 V), lower PPPM = 600 W | Preferred for space-constrained PCBs where 600 W surge margin suffices (e.g., consumer USB ports) | Select SMBJ47A-E3/52 only if board layout prohibits axial DO-201AD placement and surge energy is ≤600 W |
| 1.5KE47AHE3_A | Same die, identical electrical specs, identical AEC-Q101 qualification, but packaged in 13" tape-and-reel (base code HE3_A vs. HE3/51) | No functional difference; differs only in packaging format and reel quantity (1400 pcs vs. 51 pcs) | 1.5KE47AHE3_A is functionally identical to 1N6287AHE3/51 and may be substituted with no design change |
Compared with 1N6287AHE3/51, SMBJ47A-E3/52 trades surge robustness for compactness, while 1.5KE47AHE3_A offers identical protection in alternate packaging - making the latter a drop-in sourcing alternative, and the former a layout-driven trade-off for lower-energy applications.
Availability
1N6287AHE3/51 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom line cards, and appliance motor controllers requiring stable component supply with AEC-Q101 compliance and traceable sourcing.
Supply support for 1N6287AHE3/51 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The 1N6287AHE3/51 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 for 1N6287AHE3/51?
The 1N6287AHE3/51 has a specified breakdown voltage range of 44.7 V to 49.4 V at 1.0 mA test current, corresponding to a ±5 % tolerance around the nominal 47 V rating. This tight VBR window ensures consistent clamping onset across production lots and supports reliable system-level surge margin calculations in designs using the 1N6287AHE3/51.
Is 1N6287AHE3/51 suitable for bi-directional transient protection?
No, the 1N6287AHE3/51 is a uni-directional TVS diode, identifiable by its cathode band marking and specified only for reverse-biased operation. For bi-directional protection, Vishay offers the 1N6287CA variant (e.g., 1N6287CAHE3/51), which provides symmetrical clamping in both polarities and omits the polarity marking. Using 1N6287AHE3/51 in AC or floating applications risks forward conduction and failure.
What is the maximum clamping voltage of 1N6287AHE3/51 under surge conditions?
The 1N6287AHE3/51 exhibits a maximum clamping voltage (VC) of 64.8 V when subjected to its rated 23.1 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured at the device terminals and represents the upper limit of voltage imposed on the protected circuit during worst-case surge events - a key parameter used to verify compatibility with downstream IC absolute maximum ratings in designs using the 1N6287AHE3/51.
Does 1N6287AHE3/51 meet automotive qualification standards?
Yes, the 1N6287AHE3/51 carries AEC-Q101 qualification, confirmed in Vishay document 88301 (Rev. 11-Oct-16). This includes stress testing for high-temperature reverse bias (HTGB), high-temperature operating life (HTOL), temperature cycling (TCT), and mechanical shock - validating its suitability for automotive powertrain, body electronics, and ADAS applications where the 1N6287AHE3/51 is deployed.
What is the thermal resistance profile of 1N6287AHE3/51?
The 1N6287AHE3/51 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W and junction-to-ambient resistance (RθJA) of 75 °C/W. These values govern thermal derating: power dissipation drops linearly above 25 °C ambient, reaching zero at 175 °C junction temperature. Effective heatsinking via lead termination is essential to sustain repetitive surge duty cycles - a key consideration in any thermal model for a system using the 1N6287AHE3/51.
1N6287AHE3/51 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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 23.1A
- 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
1N6287AHE3/51 FAQ
1.How can I place an order for 1N6287AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6287AHE3/51 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 1N6287AHE3/51 reliable?
The price and inventory of 1N6287AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6287AHE3/51 is usually 5 days.
3.What payment methods are accepted for 1N6287AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6287AHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6287AHE3/51?
1N6287AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6287AHE3/51 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 1N6287AHE3/51?
For technical support, including 1N6287AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6287AHE3/51 requirements.
6.How does Aetrix verify that 1N6287AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6287AHE3/51 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 1N6287AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1N6287AHE3/51?
All 1N6287AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6287AHE3/51, 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 1N6287AHE3/51 part is unused and in its original packaging.
Return procedure for 1N6287AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6287AHE3/51 Tags
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