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Vishay General Semiconductor - Diodes Division 1N6287HE3/54
- Part No.:
- 1N6287HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6287HE3/54.pdf
- Description:
- TVS DIODE 38.1VWM 67.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,988
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Product details
Overview
1N6287HE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in the 1.5KE family, designed for primary overvoltage protection of sensitive electronics. It features a 47 V breakdown voltage (VBR = 44.7–49.4 V at 1.0 mA), 40.2 V maximum stand-off 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 - used to safeguard MOSFETs, ICs, and sensor signal lines in industrial and automotive power supplies.
For engineers reviewing the 1N6287HE3/54 datasheet, 1N6287HE3/54 pinout, 1N6287HE3/54 application, or 1N6287HE3/54 equivalent, this part delivers verified AEC-Q101 qualification, RoHS-compliant matte tin-plated leads, JESD 201 Class 2 whisker resistance, and UL 94 V-0 molded epoxy packaging - critical for high-reliability board-level surge protection design and BOM continuity planning.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds its 40.2 V stand-off threshold, it avalanches rapidly (<1 ns response) to clamp the line at ≤64.8 V while diverting up to 23.1 A of 10/1000 µs surge current. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance.
Thermally, it supports operation from –55 °C to +175 °C junction temperature, with 15.4 °C/W junction-to-lead thermal resistance and 75 °C/W junction-to-ambient rating - enabling direct PCB mounting without heatsink for short-duration transients in power rail and I/O line protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA - defines precise avalanche initiation window for repeatable clamping behavior |
| VWM | 40.2 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 64.8 V at 23.1 A - clamping voltage during full 1500 W surge, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform, validated for lightning and inductive switching events |
| IFSM | 200 A - non-repetitive forward surge rating (8.3 ms half-sine), supports input rectifier-stage protection |
| TJ max. | +175 °C - extended junction temperature enables under-hood and industrial control cabinet deployment |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package (0.375" lead length), UL 94 V-0 compliant epoxy body |
Pinout & Package
1N6287HE3/54 uses the standard DO-201AD (Case Style 1.5KE) axial package: matte tin-plated leads, cathode indicated by color band, 0.375" (9.5 mm) lead length, 0.210" (5.3 mm) body diameter. Leads are solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode (banded end) | Avalanche clamping terminal | Connected to protected line (e.g., 48 V rail or sensor input); conducts during overvoltage to shunt energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under thermal stress, critical for long-life industrial deployments |
| UL 94 V-0 flammability rating | Molded epoxy body self-extinguishes under flame exposure - meets safety-critical enclosure requirements |
| 1500 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation when properly mounted |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs against load dump transients (ISO 7637-2 Pulse 5a, up to 60 V/100 ms). IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground, clamping within 1 ns to limit voltage seen by downstream DC/DC converters and microcontrollers. Use Value: Maintains system uptime by preventing latch-up or gate oxide rupture in 40 V-rated MOSFETs and LDOs during 120 V/50 ms transients. | Use Scenario: Shielding analog inputs of pressure/temperature sensors in PLC modules from ESD and field-wiring induced surges. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF) unidirectional TVS installed at connector entry point, grounding fast transients before they reach op-amp front-end. Use Value: Preserves 12-bit ADC accuracy by limiting transient-induced offset shift to <0.5 LSB during ±8 kV contact ESD (IEC 61000-4-2). |
| Telecom AC-DC Adapter Input Stage | Motor Drive Gate Driver Supply Clamp |
Use Scenario: Secondary-side overvoltage suppression on 24 V output of telecom wall adapters exposed to lightning-induced surges on PoE cabling. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 40.2 V) placed across output capacitor to absorb 1500 W surges without false triggering during normal 24 V regulation. Use Value: Eliminates need for redundant crowbar circuits while meeting UL 60950-1 secondary circuit surge withstand requirements. | Use Scenario: Clamping supply rails feeding isolated gate drivers in 3-phase inverters subject to shoot-through-induced voltage spikes. IC Role / Device Role / Timing Role: Fast-response TVS connected between driver VDD and GND, clamping 64.8 V to protect 30 V-rated level-shifters and bootstrap FETs. Use Value: Prevents gate driver latch-up during 100 ns dv/dt events (>50 V/ns) from parasitic inductance in high-current switching nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45A | DO-214AA package (SMB), 45 V VWM, 70 V VC @ 17.1 A, 600 W PPPM | Lower power rating and surface-mount format - suited for space-constrained consumer PCBs, not high-energy industrial surges | Select SMBJ45A only if board area is constrained and surge energy remains below 200 mJ; verify thermal derating at 75 °C ambient. |
| 1.5KE47A-E3/54 | Identical electrical specs and DO-201AD package, but commercial-grade (non-AEC-Q101) and JESD 201 Class 1A whisker rating | Lacks automotive qualification - acceptable for industrial controls but excluded from Tier-1 automotive BOMs | Choose 1.5KE47A-E3/54 for cost-sensitive non-automotive designs where AEC-Q101 is not mandated. |
Compared with SMBJ45A and 1.5KE47A-E3/54, the 1N6287HE3/54 uniquely combines AEC-Q101 qualification, JESD 201 Class 2 whisker resistance, and full 1500 W surge capability in an axial-leaded package - making it the only option qualified for under-hood automotive modules requiring both mechanical robustness and long-term reliability.
Availability
1N6287HE3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom power supply surge suppression requiring stable component supply across multi-year production cycles.
Supply support for 1N6287HE3/54 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated through proven clamping margin and long-term stability.
FAQ
What is the exact breakdown voltage range for 1N6287HE3/54?
The 1N6287HE3/54 has a guaranteed breakdown voltage (VBR) range of 44.7 V to 49.4 V at a test current of 1.0 mA, measured per JEDEC standards. This tight ±5% tolerance ensures predictable clamping onset across production lots and temperature extremes from –55 °C to +175 °C, directly supporting compliance with IEC 61000-4-5 surge immunity requirements in safety-critical designs.
Is 1N6287HE3/54 suitable for automotive applications?
Yes, the 1N6287HE3/54 is AEC-Q101 qualified per Vishay documentation (Document 88301, Note 2), covering stress tests including temperature cycling, high-temperature reverse bias, and ESD. Its HE3 suffix confirms JESD 201 Class 2 whisker resistance and RoHS compliance - meeting Tier-1 automotive requirements for engine control, body electronics, and ADAS power rail protection where long-term reliability under thermal cycling is mandatory.
How does the clamping voltage of 1N6287HE3/54 compare to its stand-off voltage?
The 1N6287HE3/54 has a maximum stand-off voltage (VWM) of 40.2 V and a maximum clamping voltage (VC) of 64.8 V at 23.1 A peak pulse current. This 24.6 V differential provides a 61% overvoltage margin above VWM, ensuring safe operation during normal conditions while delivering effective protection against transients exceeding 40.2 V - critical for preserving 45 V-rated components in 48 V systems.
What package type does 1N6287HE3/54 use, and what are its key mechanical properties?
The 1N6287HE3/54 uses the DO-201AD (Case Style 1.5KE) axial package: 0.375" (9.5 mm) lead length, 0.210" (5.3 mm) body diameter, molded UL 94 V-0 epoxy body, and matte tin-plated leads compliant with J-STD-002 solderability. Its glass-passivated junction and 15.4 °C/W junction-to-lead thermal resistance support reliable through-hole mounting in high-vibration environments without thermal derating penalties.
Can 1N6287HE3/54 be used in bidirectional configurations?
No, the 1N6287HE3/54 is strictly unidirectional - indicated by the "A" suffix and cathode band marking. Bidirectional variants in the same voltage grade use the "CA" suffix (e.g., 1.5KE47CA). Using 1N6287HE3/54 in bidirectional applications would result in forward conduction during negative transients, causing catastrophic failure. Always match polarity to circuit topology: cathode to protected line, anode to ground for unidirectional clamping.
1N6287HE3/54 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:
- 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
1N6287HE3/54 FAQ
1.How can I place an order for 1N6287HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6287HE3/54 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 1N6287HE3/54 reliable?
The price and inventory of 1N6287HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6287HE3/54 is usually 5 days.
3.What payment methods are accepted for 1N6287HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6287HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6287HE3/54?
1N6287HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6287HE3/54 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 1N6287HE3/54?
For technical support, including 1N6287HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6287HE3/54 requirements.
6.How does Aetrix verify that 1N6287HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1N6287HE3/54 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 1N6287HE3/54 meets industry standards.
7.What is the process for return or replacement of 1N6287HE3/54?
All 1N6287HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6287HE3/54, 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 1N6287HE3/54 part is unused and in its original packaging.
Return procedure for 1N6287HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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