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Vishay General Semiconductor - Diodes Division 1N6287A-E3/54
- Part No.:
- 1N6287A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6287A-E3/54.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:489
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Product details
Overview
1N6287A-E3/54 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 44.7 V to 49.4 V breakdown voltage range at 1 mA test current, 40.2 V maximum standoff voltage, 1.0 µA max reverse leakage at VWM, 23.1 A peak pulse current (10/1000 µs), and clamps transients to ≤64.8 V. It is widely used in automotive power supply inputs and industrial sensor interface circuits.
For engineers reviewing the 1N6287A-E3/54 datasheet, 1N6287A-E3/54 pinout, 1N6287A-E3/54 application, or 1N6287A-E3/54 equivalent, this part delivers verified 1500 W transient suppression with glass-passivated junction reliability, RoHS-compliant matte tin leads, and UL 94 V-0 molded epoxy packaging - critical for ESD and lightning surge hardening in harsh environments.
Technical Context
The 1N6287A-E3/54 operates as a unidirectional avalanche-clamping device, leveraging a silicon planar junction structure with glass passivation for stable breakdown characteristics and low incremental surge resistance. Its clamping action responds within <1 ns, enabling protection of downstream MOSFETs and ICs against fast-rising inductive switching spikes and EFT events.
Thermally, it supports operation from –55 °C to +175 °C junction temperature, with 75 °C/W junction-to-ambient thermal resistance and 15.4 °C/W junction-to-lead resistance. It sustains 200 A non-repetitive forward surge current (8.3 ms half-sine) and dissipates up to 6.5 W on an infinite heatsink at 75 °C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 44.7 V min / 49.4 V max at 1 mA - defines precise clamping onset threshold for reliable overvoltage detection |
| Standoff Voltage (VWM) | 40.2 V max - ensures no conduction during normal 36–40 V DC rail operation |
| Clamping Voltage (VC) | ≤64.8 V at 23.1 A IPPM - limits transient voltage seen by protected load to safe margin below IC absolute max ratings |
| Peak Pulse Power (PPPM) | 1500 W (10/1000 µs) - handles high-energy surges from motor commutation or load dump without failure |
| Reverse Leakage (ID) | ≤1.0 µA at VWM - prevents excessive quiescent current drain in battery-powered systems |
| Junction Temperature Range | –55 °C to +175 °C - supports under-hood automotive and industrial ambient conditions without derating loss |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" (9.5 mm) lead length, UL 94 V-0 compliant |
Pinout & Package
1N6287A-E3/54 uses the standard DO-201AD (Case Style 1.5KE) axial-leaded package. The cathode is marked by a color band on the body; polarity must be observed in series connection with DC rails.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground-reference terminal | Connected to system ground or low-side return path; carries full surge current during clamping |
| Cathode | Protected-line terminal | Connected to line being protected (e.g., 48 V supply input); reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and life cycles |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) without degradation |
| Sub-nanosecond response time | Clamps transients before sensitive logic or analog circuitry can be damaged |
| RoHS-compliant matte tin plating | Meets J-STD-002 and JESD 22-B102 solderability standards; passes JESD 201 Class 1A whisker test |
| UL 94 V-0 epoxy molding | Provides flame-retardant mechanical encapsulation suitable for enclosed industrial enclosures |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs from load dump transients (ISO 7637-2 Pulse 5a) and alternator overshoot. IC Role / Device Role: Primary shunt clamp placed between power rail and chassis ground, upstream of DC-DC converters. Use Value: Limits voltage excursion to ≤64.8 V, preserving integrity of 75 V-rated input stages in PMICs and microcontrollers. | Use Scenario: Safeguarding 4–20 mA current-loop transmitters and RS-485 nodes against ESD (IEC 61000-4-2) and cable-induced surges. IC Role / Device Role: Bidirectional-capable variant not applicable; this unidirectional part used on powered side of loop with proper polarity orientation. Use Value: Prevents latch-up or gate oxide rupture in op-amps and transceivers by clamping fast transients before they propagate into analog front-ends. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Inputs |
Use Scenario: Overvoltage protection on -48 V telecom rectifier outputs exposed to lightning-induced surges on long feeder lines. IC Role / Device Role: First-stage TVS in multi-tier protection scheme, coordinated with GDTs and MOVs. Use Value: Fast clamping reduces let-through energy to downstream components, extending system MTBF in outdoor cabinets. | Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role: Mounted across motor terminals or on H-bridge supply rail to absorb flyback energy. Use Value: Eliminates need for snubber RC networks, reducing BOM count while maintaining EN 61000-6-4 radiated emissions compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48A | Lower PPPM (400 W), smaller SMA package (DO-214AC), 48 V nominal VBR, higher VC (77.4 V) | Best suited for space-constrained PCBs with lower surge exposure (IEC 61000-4-5 Level 2) | Select when board area is limited and peak surge energy is ≤400 W; verify layout thermal relief for 6.5 W dissipation. |
| 1.5KE47A | Same electrical specs and DO-201AD package; differs only in ordering suffix (E3/54 vs. bulk/other tape-and-reel codes) | No functional difference; identical performance, reliability, and qualification status | Direct form-fit-function replacement; use when alternate packaging or logistics requirements apply. |
Compared with SMAJ48A, 1N6287A-E3/54 provides 275 % higher surge power handling and lower clamping voltage, making it suitable for demanding automotive and industrial environments; versus 1.5KE47A, it is electrically and mechanically identical - differing only in reel packaging configuration and traceability marking.
Availability
1N6287A-E3/54 is available at Aetrix Electronics and suitable for automotive power modules, industrial sensor interfaces, telecom DC feeds, and appliance motor drive circuits requiring stable component supply and long-term lifecycle support.
Supply support for 1N6287A-E3/54 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, and protection devices with emphasis on reliability, ruggedness, and AEC-Q101 qualification.
The 1N6287A-E3/54 belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient suppression in automotive, industrial, and telecom infrastructure where failure modes must be mitigated under extreme electrical stress.
FAQ
What is the breakdown voltage tolerance of the 1N6287A-E3/54?
The 1N6287A-E3/54 has a specified breakdown voltage range of 44.7 V minimum to 49.4 V maximum at 1 mA test current, representing ±5 % tolerance around the nominal 47 V rating. This tight VBR spread ensures consistent clamping behavior across production lots and enables predictable coordination with downstream overvoltage protection thresholds in the 1N6287A-E3/54-based design.
Is the 1N6287A-E3/54 RoHS compliant and halogen-free?
Yes, the 1N6287A-E3/54 carries the "E3" suffix indicating full RoHS compliance per EU Directive 2011/65/EU and meets Vishay's material categorization standards for hazardous substances. It is also halogen-free per IEC 61249-2-21, with no brominated or chlorinated flame retardants in its UL 94 V-0 epoxy molding compound - confirmed in Vishay document 99912.
Can the 1N6287A-E3/54 be used in bidirectional configurations?
No, the 1N6287A-E3/54 is strictly a unidirectional TVS diode. Its cathode-band marking and asymmetric IV curve require correct polarity installation. For bidirectional protection, Vishay offers the 1N6287CA variant (not 1N6287A-E3/54), which provides symmetrical clamping in both directions and lacks polarity marking.
What is the maximum allowable mounting temperature for soldering the 1N6287A-E3/54?
The 1N6287A-E3/54 supports solder dip at 275 °C maximum for 10 seconds per JESD 22-B106, and reflow profiles must comply with JEDEC J-STD-020. Lead finish is matte tin, qualified to J-STD-002 and JESD 22-B102 for solderability. Exceeding these limits risks delamination or junction damage, compromising the 1N6287A-E3/54's surge endurance.
Does the 1N6287A-E3/54 meet AEC-Q101 qualification?
No, the 1N6287A-E3/54 is commercial-grade only. AEC-Q101 qualified versions carry the "HE3" suffix (e.g., 1.5KE47AHE3_B). The 1N6287A-E3/54 does not undergo the extended stress testing required for automotive under-hood applications, though its 175 °C TJmax and robust construction make it suitable for industrial and telecom use cases where AEC-Q101 is not mandated.
1N6287A-E3/54 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1N6287A-E3/54 FAQ
1.How can I place an order for 1N6287A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6287A-E3/54 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 1N6287A-E3/54 reliable?
The price and inventory of 1N6287A-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6287A-E3/54 is usually 5 days.
3.What payment methods are accepted for 1N6287A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6287A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6287A-E3/54?
1N6287A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6287A-E3/54 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 1N6287A-E3/54?
For technical support, including 1N6287A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6287A-E3/54 requirements.
6.How does Aetrix verify that 1N6287A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1N6287A-E3/54 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 1N6287A-E3/54 meets industry standards.
7.What is the process for return or replacement of 1N6287A-E3/54?
All 1N6287A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6287A-E3/54, 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 1N6287A-E3/54 part is unused and in its original packaging.
Return procedure for 1N6287A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6287A-E3/54 Tags
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