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Vishay General Semiconductor - Diodes Division 1N6280A-E3/51
- Part No.:
- 1N6280A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6280A-E3/51.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,103
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Product details
Overview
1N6280A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails and signal lines. It features a 24 V nominal breakdown voltage (22.8–25.2 V at 1 mA), 20.5 V maximum standoff voltage, 33.2 V clamping voltage at 45.2 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and operates from –55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD.
For engineers reviewing the 1N6280A-E3/51 datasheet, 1N6280A-E3/51 pinout, 1N6280A-E3/51 application, or 1N6280A-E3/51 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, clamping behavior under surge conditions, thermal resistance data, and real-world protection use cases - all confirmed from Vishay's official 88301 specification document.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional polarity enables cathode-referenced clamping on positive-going surges, with a 3.5 V forward voltage at 100 A per JEDEC spec.
The device complies with UL 497B recognition (QVGQ2) and meets JESD 201 Class 1A whisker testing. It is rated for 200 A non-repetitive forward surge (8.3 ms half-sine) and exhibits a +0.094 %/°C temperature coefficient of VBR, ensuring predictable voltage drift across operating temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V at 1 mA - defines guaranteed clamping onset range under test conditions |
| VWM | 20.5 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 33.2 V at 45.2 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling capability for transient suppression without failure |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance, critical for PCB copper area and heatsinking design |
| TJ max | +175 °C - maximum junction temperature enabling operation in high-ambient industrial environments |
| IF surge | 200 A (8.3 ms half-sine) - withstands high-current inductive kick without bond wire fusing |
Pinout & Package
Package: JEDEC-standard 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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side reference in unidirectional clamp configuration |
| Cathode | Current exit point; marked by color band | Connected to protected line - absorbs positive transients by shunting to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable breakdown characteristics and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Supports robust protection against automotive load dump and industrial relay coil collapse events |
| Clamping ratio VC/VBR ≈ 1.39 | Indicates tight voltage control - lower overshoot than Zener-based suppressors with higher dynamic impedance |
| Response time <1 ns | Acts before sensitive CMOS inputs or gate oxides experience damaging voltage rise |
| AEC-Q101 qualification available (HE3 variant) | Validates suitability for automotive electronics where reliability under thermal cycling and vibration is mandatory |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 24 V CAN bus power supply from load dump transients up to ±120 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VCC and GND, clamping positive spikes only. Use Value: Limits voltage seen by downstream DC/DC converter input to ≤33.2 V, preventing overvoltage shutdown or damage. | Use Scenario: Shielding analog output pins of pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-capacitance TVS on 4–20 mA loop outputs, grounded cathode. Use Value: Clamps ESD events (IEC 61000-4-2 Level 4) within 1 ns while adding <0.5 pF parasitic capacitance. |
| Consumer Power Adapter Input | MOSFET Gate Driver Protection |
Use Scenario: Secondary-side overvoltage suppression in 12 V wall adapters exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS across output capacitor terminals. Use Value: Maintains 20.5 V working margin while clamping 1 kV/10/1000 µs transients to 33.2 V - preserving regulator stability. | Use Scenario: Preventing gate oxide rupture in N-channel power MOSFETs driven by microcontrollers. IC Role / Device Role / Timing Role: Cathode tied to gate, anode to source - clamps negative VGS spikes during fast switching. Use Value: Limits reverse gate voltage to ≤3.5 V at 100 A forward surge, avoiding gate-source breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Lower peak power (600 W), smaller SMB package (vs. axial 1.5KE), 30.6 V clamping at 19.9 A | Better suited for space-constrained PCBs; less robust for high-energy 10/1000 µs transients | Select when board area is critical and surge energy is ≤600 W; verify thermal derating at elevated ambient |
| 1.5KE24A | Same electrical specs and 1.5KE package; identical VBR, VC, PPPM, and thermal resistance | No functional difference - direct form-fit-function replacement with same JEDEC outline | Choose for legacy BOM continuity or distributor stock availability; E3/51 denotes tape-and-reel packaging variant |
Compared with SMBJ24A and 1.5KE24A, the 1N6280A-E3/51 offers identical protection performance to 1.5KE24A in a RoHS-compliant, JESD 201 Class 1A whisker-tested package, while outperforming SMBJ24A in energy handling - making it optimal for industrial and automotive systems requiring 1500 W surge immunity.
Availability
1N6280A-E3/51 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, consumer adapter overvoltage suppression, and MOSFET gate driver safeguarding requiring stable component supply across multi-year production cycles.
Supply support for 1N6280A-E3/51 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power handling, and automotive-grade qualification.
The 1N6280A-E3/51 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 due to voltage surges must be eliminated.
FAQ
What is the breakdown voltage tolerance for 1N6280A-E3/51?
The 1N6280A-E3/51 has a specified breakdown voltage range of 22.8 V to 25.2 V at 1 mA test current, representing ±5 % tolerance around the nominal 24 V rating. This tolerance is measured per JEDEC standard and ensures consistent clamping onset across production lots. The 1N6280A-E3/51 maintains this specification across its full operating temperature range of –55 °C to +175 °C, with a temperature coefficient of +0.094 %/°C.
Is 1N6280A-E3/51 bidirectional or unidirectional?
The 1N6280A-E3/51 is a unidirectional TVS diode, indicated by the "A" suffix and presence of a cathode band. It clamps only positive transients relative to its cathode terminal. Bidirectional variants in the same family use the "CA" suffix (e.g., 1.5KE24CA). The 1N6280A-E3/51 must be oriented with cathode toward the protected line and anode to ground to function correctly - reverse orientation will not provide protection.
What is the clamping voltage of 1N6280A-E3/51 at its rated peak pulse current?
The 1N6280A-E3/51 clamps to a maximum of 33.2 V at its rated peak pulse current of 45.2 A, defined under the standard 10/1000 µs double-exponential waveform. This clamping voltage is measured at the device terminals and represents the upper limit of voltage imposed on downstream circuitry during a full-power transient event. The low clamping ratio (VC/VBR ≈ 1.39) confirms effective suppression performance versus competing Zener-based solutions.
Does 1N6280A-E3/51 meet automotive qualification standards?
The base 1N6280A-E3/51 is commercial-grade and not AEC-Q101 qualified. However, Vishay offers the AEC-Q101-qualified variant 1N6280AHE3_B (or 1.5KE24AHE3_B), which shares identical electrical specs but adds automotive reliability validation including temperature cycling, humidity testing, and mechanical shock compliance. For automotive designs requiring qualification, specify the HE3_B suffix version - the 1N6280A-E3/51 itself is intended for industrial and consumer applications.
What is the thermal resistance of 1N6280A-E3/51, and how does it affect layout?
The 1N6280A-E3/51 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W under standard JEDEC test conditions. This value assumes minimal PCB copper; actual RθJA improves significantly with added thermal pad area and internal copper planes. For reliable 1500 W pulse handling, designers should allocate ≥1 in² of 2-oz copper connected to both leads - otherwise, localized heating may exceed the +175 °C TJ max during repetitive surges. The 1N6280A-E3/51's RθJL is 15.4 °C/W, confirming efficient heat transfer to leads when soldered properly.
1N6280A-E3/51 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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 45.2A
- 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
1N6280A-E3/51 FAQ
1.How can I place an order for 1N6280A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6280A-E3/51 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 1N6280A-E3/51 reliable?
The price and inventory of 1N6280A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6280A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1N6280A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6280A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6280A-E3/51?
1N6280A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6280A-E3/51 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 1N6280A-E3/51?
For technical support, including 1N6280A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6280A-E3/51 requirements.
6.How does Aetrix verify that 1N6280A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6280A-E3/51 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 1N6280A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1N6280A-E3/51?
All 1N6280A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6280A-E3/51, 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 1N6280A-E3/51 part is unused and in its original packaging.
Return procedure for 1N6280A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6280A-E3/51 Tags
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