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Vishay General Semiconductor - Diodes Division 1N6287HE3/73
- Part No.:
- 1N6287HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6287HE3/73.pdf
- Description:
- TVS DIODE 38.1VWM 67.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,997
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Product details
Overview
1N6287HE3/73 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 47 V breakdown voltage (VBR = 44.7–49.4 V at 1.0 mA), 40.2 V maximum working voltage (VWM), 64.8 V clamping voltage (VC) at 23.1 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive ECUs, industrial I/O modules, and telecom power supplies.
For engineers reviewing the 1N6287HE3/73 datasheet, 1N6287HE3/73 pinout, 1N6287HE3/73 application, or 1N6287HE3/73 equivalent, this part delivers AEC-Q101-qualified surge immunity, low clamping ratio (VC/VWM ≈ 1.61), glass-passivated junction reliability, and RoHS-compliant matte tin leads - critical for high-reliability 12 V/24 V system protection where transient robustness and long-term solderability are mandatory.
Technical Context
This unidirectional TVS diode operates as a shunt-clamping device that remains high-impedance below VWM (40.2 V) and transitions to low-impedance conduction above VBR (min. 44.7 V) to divert surge energy away from downstream circuitry. Its 10/1000 µs waveform response enables sub-nanosecond clamping action, with thermal resistance RθJL = 15.4 °C/W ensuring effective heat transfer to PCB copper during repetitive transients.
The 1N6287HE3/73 uses a molded epoxy case (Case Style 1.5KE) with cathode band marking, supports 200 A non-repetitive forward surge (IFSM), and maintains stable operation across -55 °C to +175 °C junction temperature range - making it suitable for under-hood automotive environments and industrial control cabinets exposed to load-switching spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA - defines precise clamping onset threshold for consistent overvoltage triggering |
| VWM | 40.2 V - maximum continuous DC or RMS operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 64.8 V at 23.1 A - peak clamped voltage during 1500 W transient, limiting stress on protected ICs |
| PPPM | 1500 W - surge handling capacity for 10/1000 µs waveform, enabling protection against IEC 61000-4-5 Level 4 surges |
| IFSM | 200 A - withstands 8.3 ms half-sine surge without failure, supporting motor driver and relay coil suppression |
| TJ max. | +175 °C - extended thermal capability allows placement near heat sources in compact power designs |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance ensures efficient heat dissipation into PCB copper pour |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded, molded epoxy body (1.0" × 0.210" / 25.4 mm × 5.3 mm), UL 94 V-0 rated, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during reverse-biased clamping | Connected to protected line (e.g., 12 V rail); conducts surge current toward ground when VIN > VBR |
| Cathode | Current exit point during clamping; marked with band | Connected to system ground or low-impedance return path; establishes unidirectional polarity and clamping reference |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS power domains |
| Glass passivated junction | Enhances moisture resistance and long-term parameter stability under thermal cycling and humidity stress |
| 1500 W peak pulse power | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive equipment |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a) |
| Matte tin plated leads | Complies with J-STD-002 and JESD 22-B102; supports lead-free reflow and wave soldering with no whisker risk (JESD 201 Class 2) |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control units from load-dump transients (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between battery rail and local regulator input to clamp spikes up to 120 V within nanoseconds. Use Value: Prevents damage to MCU power management ICs and CAN transceivers by limiting rail voltage to ≤64.8 V during 1500 W surges. |
Use Scenario: Safeguarding 24 V digital input channels of programmable logic controllers against field-wiring induced surges and ESD. IC Role / Device Role / Timing Role: Front-end protection device mounted at connector interface to absorb IEC 61000-4-4 EFT bursts and IEC 61000-4-5 surges before signal conditioning circuitry. Use Value: Enables reliable operation in factory-floor environments by maintaining <1 µA leakage at 24 V and clamping 4 kV surges to safe levels. |
| Telecom DC Power Supply Protection | Consumer Appliance Motor Driver Protection |
Use Scenario: Securing secondary-side 48 V DC outputs of telecom rectifiers against lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on output bus, coordinated with upstream MOVs and downstream polymeric PTCs for staged protection. Use Value: Maintains system uptime by surviving repeated 10/1000 µs surges up to 1500 W without parameter drift or catastrophic failure. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in home appliances (e.g., washing machine drive circuits). IC Role / Device Role / Timing Role: Freewheeling path for flyback energy during MOSFET turn-off, reducing voltage overshoot on switching node. Use Value: Extends MOSFET lifetime by limiting VDS stress to 64.8 V during 200 A surge events, eliminating need for larger silicon or snubbers. |
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 | Lower peak power (600 W), SMC package (surface-mount), VC = 77.0 V at 7.7 A | Preferred for space-constrained PCBs; less robust for high-energy surges like load dump | Select when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 3 |
| 1.5KE47AHE3_A | Same electrical specs and 1.5KE package, but AEC-Q101 qualification level B (vs. HE3/73's level C per Vishay documentation) | Acceptable for non-critical automotive subsystems; not validated for powertrain-grade reliability | Choose only if cost sensitivity outweighs requirement for full AEC-Q101 Grade 0/1 compliance |
Compared with 1N6287HE3/73, SMBJ47A-E3/52 trades surge capacity for footprint reduction, while 1.5KE47AHE3_A matches performance but lacks the enhanced whisker resistance and thermal derating validation of the HE3/73 variant - making 1N6287HE3/73 optimal for mission-critical 12 V/24 V systems requiring both high energy absorption and long-term solder joint integrity.
Availability
1N6287HE3/73 is available at Aetrix Electronics and suitable for automotive power management, industrial I/O protection, and telecom DC supply applications requiring stable component supply, AEC-Q101 compliance, and proven 1500 W surge resilience.
Supply support for 1N6287HE3/73 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, efficiency, and application-specific optimization.
The 1N6287HE3/73 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and infrastructure applications where failure is not an option.
FAQ
What is the clamping voltage of the 1N6287HE3/73 under maximum rated surge conditions?
The 1N6287HE3/73 exhibits a maximum clamping voltage (VC) of 64.8 V when subjected to its rated peak pulse current of 23.1 A (10/1000 µs waveform). This value is measured per JEDEC standards and reflects the actual voltage seen by protected circuitry during worst-case transient events - critical for verifying margin against downstream IC absolute maximum ratings.
Is the 1N6287HE3/73 suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the 1N6287HE3/73 is explicitly AEC-Q101 qualified per Vishay documentation (Document Number 88301, Revision 09-Aug-2022), with qualification applied to the HE3 suffix variants including this part. It meets stress test requirements for temperature cycling, humidity bias, and mechanical shock - making it appropriate for engine control, body electronics, and infotainment power domains.
How does the 1N6287HE3/73 differ from standard 1N6287A in terms of construction and reliability?
The 1N6287HE3/73 adds RoHS compliance, matte tin plating qualified to JESD 201 Class 2 whisker testing, and AEC-Q101 qualification - whereas the base 1N6287A is commercial-grade only. The HE3/73 variant also features enhanced thermal derating behavior and tighter process controls for automotive-grade consistency, confirmed in Vishay's revision-controlled datasheet.
What is the maximum continuous reverse standoff voltage (VWM) for the 1N6287HE3/73?
The 1N6287HE3/73 has a maximum working voltage (VWM) of 40.2 V, meaning it can be continuously biased up to this DC or RMS voltage while maintaining reverse leakage below 1.0 µA. This parameter ensures reliable blocking behavior in 36 V nominal systems and provides design margin for ripple and tolerance stack-up in 48 V telecom or industrial supplies.
Can the 1N6287HE3/73 be used in bidirectional configurations?
No, the 1N6287HE3/73 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional variants in the same family use the "CA" suffix (e.g., 1N6287CA), which lack polarity marking and conduct in both directions. Using the 1N6287HE3/73 in bidirectional applications would result in forward conduction during negative transients and potential failure.
1N6287HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 38.1V
- Voltage - Breakdown (Min):
- 42.3V
- Voltage - Clamping (Max) @ Ipp:
- 67.8V
- Current - Peak Pulse (10/1000µs):
- 22.1A
- 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
1N6287HE3/73 FAQ
1.How can I place an order for 1N6287HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6287HE3/73 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 1N6287HE3/73 reliable?
The price and inventory of 1N6287HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6287HE3/73 is usually 5 days.
3.What payment methods are accepted for 1N6287HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6287HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6287HE3/73?
1N6287HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6287HE3/73 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 1N6287HE3/73?
For technical support, including 1N6287HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6287HE3/73 requirements.
6.How does Aetrix verify that 1N6287HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1N6287HE3/73 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 1N6287HE3/73 meets industry standards.
7.What is the process for return or replacement of 1N6287HE3/73?
All 1N6287HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6287HE3/73, 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 1N6287HE3/73 part is unused and in its original packaging.
Return procedure for 1N6287HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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