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Vishay General Semiconductor - Diodes Division 1N6287-E3/73
- Part No.:
- 1N6287-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6287-E3/73.pdf
- Description:
- TVS DIODE 38.1VWM 67.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,077
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Product details
Overview
1N6287-E3/73 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 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 operates across –55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1N6287-E3/73 datasheet, 1N6287-E3/73 pinout, 1N6287-E3/73 application, or 1N6287-E3/73 equivalent, this part serves as a high-energy, fast-response (≤1 ns) unidirectional TVS for robust ESD and surge immunity in 12 V/24 V systems where clamping performance, thermal stability, and JEDEC-standard 1.5KE package compatibility are critical selection criteria.
Technical Context
This device uses a glass-passivated silicon junction optimized for transient suppression under repetitive 10/1000 µs surge waveforms at ≤0.01% duty cycle. Its low incremental surge resistance and excellent clamping ratio (VC/VBR ≈ 1.45) ensure minimal let-through voltage during 23.1 A transients.
It exhibits a positive temperature coefficient of VBR (+0.101 %/°C), enabling stable breakdown behavior across wide temperature ranges. The unidirectional polarity - marked with a cathode band - supports integration into DC-biased circuits without reverse conduction concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA - defines precise voltage threshold at which clamping initiates under controlled test conditions |
| VWM | 40.2 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 64.8 V at 23.1 A - clamped voltage seen by protected circuit during full 1500 W transient event |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity without degradation |
| IFSM | 200 A (8.3 ms half-sine) - single-event forward surge rating for unidirectional operation |
| TJ range | –55 °C to +175 °C - enables deployment in under-hood automotive and industrial environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, informs heatsinking requirements for sustained power dissipation |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads, RoHS-compliant (E3 suffix), UL 94 V-0 rated, 0.375" lead length standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-side reference in unidirectional clamp configuration |
| Cathode | Reverse-biased terminal / clamping node | Connected to protected line; color band identifies this terminal - blocks VWM, conducts above VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable breakdown characteristics and long-term reliability under thermal cycling |
| 1500 W peak pulse power | Withstands lightning-induced surges per IEC 61000-4-5 (Level 4) and ISO 7637-2 Pulse 5a without failure |
| Clamping voltage ≤64.8 V | Ensures downstream 48 V-rated ICs (e.g., CAN transceivers, microcontrollers) remain within safe operating area |
| Response time ≤1 ns | Activates faster than MOVs or polymer-based protectors - prevents voltage overshoot before protection engages |
| AEC-Q101 qualification option | Available in HE3 variant (e.g., 1N6287HE3_B); not applicable to -E3/73, but confirms family-grade automotive suitability |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery rail in engine control units exposed to load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role: Primary unidirectional TVS placed between battery input and DC-DC converter input stage. Use Value: Clamps 100 V+ transients to ≤64.8 V within 1 ns, preventing damage to upstream regulators and MCU power domains. |
Use Scenario: 4–20 mA current loop interface in factory automation sensors subject to ESD (IEC 61000-4-2 ±8 kV contact) and cable coupling noise. IC Role / Device Role: Low-capacitance TVS shunting induced surges on analog signal lines before op-amp input stages. Use Value: Maintains signal integrity with <1 µA leakage at 40.2 V while suppressing >15 kV ESD events without latch-up. |
| Telecom DC Power Feeds | Consumer Device USB Port Protection |
Use Scenario: –48 V DC power feed in telecom base station line cards encountering lightning-induced surges on outdoor cabling. IC Role / Device Role: Unidirectional TVS on negative rail, referenced to chassis ground, complementing positive-rail protection. Use Value: Handles bidirectional surge energy via coordinated placement - achieves system-level 1500 W capability per rail. |
Use Scenario: VBUS line in USB 2.0 host ports subjected to accidental 12 V misconnection and ESD events. IC Role / Device Role: Standoff-rated TVS limiting VBUS to ≤64.8 V during overvoltage, upstream of USB switch and controller. Use Value: Prevents permanent damage to USB PHY and port controller ICs while maintaining <10 pF capacitance impact on signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A | DO-214AA package (smaller footprint), 47 V VBR, 70 V VC @ 17.1 A, 600 W PPPM | Lower power rating; suited for space-constrained PCBs with moderate surge exposure (e.g., consumer USB) | Select SMBJ47A when board area is limited and peak surge energy remains ≤600 W; verify thermal derating for continuous operation. |
| 1.5KE47A | Same 1.5KE package, identical electrical specs (VBR, VWM, VC, PPPM), differing only in packaging code (-E3/73 vs. -E3/54) | No functional difference; both meet same JEDEC 1.5KE mechanical and electrical standards | 1.5KE47A is direct form-fit-function replacement - use when tape-and-reel quantity (1400 pcs) or reel diameter (13") aligns with production needs. |
Compared with SMBJ47A, 1N6287-E3/73 delivers 2.5× higher surge power handling and superior thermal robustness in the larger 1.5KE case; versus 1.5KE47A, it shares identical protection performance but differs only in packaging logistics - making it ideal for high-reliability industrial and automotive programs requiring proven 1500 W capability.
Availability
1N6287-E3/73 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, telecom DC feeds, and consumer USB protection requiring stable component supply across extended lifecycle programs.
Supply support for 1N6287-E3/73 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The 1N6287-E3/73 belongs to Vishay's TRANSZORB® TVS family - engineered specifically for high-energy transient suppression in harsh environments where fast response, stable clamping, and long-term parametric consistency are mandatory.
FAQ
What is the breakdown voltage tolerance for 1N6287-E3/73?
The 1N6287-E3/73 has a specified breakdown voltage range of 44.7 V to 49.4 V at 1.0 mA test current, representing a ±5% tolerance around the nominal 47 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, critical for protecting 48 V-tolerant ICs without premature conduction during normal operation.
Is 1N6287-E3/73 RoHS compliant and lead-free?
Yes, the "E3" suffix in 1N6287-E3/73 explicitly denotes RoHS compliance and commercial-grade qualification per JESD 201 Class 1A whisker testing. The device uses matte tin-plated leads and meets UL 94 V-0 flammability requirements, with no lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE substances above regulated thresholds.
Can 1N6287-E3/73 be used in bidirectional configurations?
No - 1N6287-E3/73 is strictly unidirectional, indicated by the "A" suffix and cathode band marking. Bidirectional variants (e.g., 1N6287CA) exist in the same family but are distinct orderable parts. Using 1N6287-E3/73 in AC or floating applications would result in forward conduction during negative half-cycles, causing failure.
What is the maximum clamping voltage of 1N6287-E3/73 under surge conditions?
The maximum clamping voltage (VC) of 1N6287-E3/73 is 64.8 V, measured at its peak pulse current (IPPM) of 23.1 A under the standardized 10/1000 µs waveform. This value represents the worst-case voltage imposed on the protected circuit during a full 1500 W transient event and is guaranteed across the –55 °C to +175 °C operating junction temperature range.
How does thermal resistance affect 1N6287-E3/73 performance in high-temperature environments?
With a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W, the 1N6287-E3/73 requires careful thermal design in ambient temperatures above 85 °C. At 125 °C ambient, even brief 1500 W surges can push junction temperature toward the 175 °C limit - derating curves in the Vishay datasheet (Fig. 2) mandate reducing IPPM by ~30% at TA = 100 °C to maintain reliability.
1N6287-E3/73 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1N6287-E3/73 FAQ
1.How can I place an order for 1N6287-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6287-E3/73 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 1N6287-E3/73 reliable?
The price and inventory of 1N6287-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6287-E3/73 is usually 5 days.
3.What payment methods are accepted for 1N6287-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6287-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6287-E3/73?
1N6287-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6287-E3/73 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 1N6287-E3/73?
For technical support, including 1N6287-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6287-E3/73 requirements.
6.How does Aetrix verify that 1N6287-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1N6287-E3/73 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 1N6287-E3/73 meets industry standards.
7.What is the process for return or replacement of 1N6287-E3/73?
All 1N6287-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6287-E3/73, 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 1N6287-E3/73 part is unused and in its original packaging.
Return procedure for 1N6287-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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