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Vishay General Semiconductor - Diodes Division 1N6284AHE3/51
- Part No.:
- 1N6284AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6284AHE3/51.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,331
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Product details
Overview
1N6284AHE3/51 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 34.2 V to 37.8 V breakdown voltage range at 1 mA test current, 30.8 V maximum stand-off voltage, 1.0 µA max reverse leakage at VWM, 30.1 A peak pulse current (10/1000 µs), and clamps to 49.9 V at rated IPPM - enabling robust protection of MOSFETs, ICs, and sensor interfaces against ESD and inductive switching transients.
For engineers reviewing the 1N6284AHE3/51 datasheet, 1N6284AHE3/51 pinout, 1N6284AHE3/51 application, or 1N6284AHE3/51 equivalent, this part supports AEC-Q101 qualified automotive designs, meets UL 497B recognition, uses RoHS-compliant matte tin-plated leads, and delivers 1500 W peak pulse power with sub-nanosecond response time - critical for I/O line hardening in industrial controllers and automotive ECUs.
Technical Context
This TVS diode operates as a uni-directional clamping device with a glass-passivated junction and molded epoxy case (Case Style 1.5KE). Its clamping action begins within <1 ns upon transient onset, limiting voltage excursions to ≤49.9 V at 30.1 A, while maintaining low incremental surge resistance and excellent thermal stability up to TJ = 175 °C.
The device is rated for 6.5 W steady-state power dissipation on an infinite heatsink at TL = 75 °C, exhibits a typical junction-to-lead thermal resistance of 15.4 °C/W, and supports 200 A non-repetitive forward surge current (8.3 ms half-sine), making it suitable for high-energy transient suppression in 12 V and 24 V automotive and industrial power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 34.2 V min to 37.8 V max at IT = 1 mA - defines precise conduction threshold for reliable overvoltage triggering |
| Stand-off Voltage VWM | 30.8 V max - ensures no conduction during normal 24 V system operation with margin |
| Clamping Voltage VC | 49.9 V at IPPM = 30.1 A (10/1000 µs) - limits downstream voltage stress to safe levels for 3.3 V/5 V logic and gate drivers |
| Peak Pulse Power PPPM | 1500 W - sustains high-energy transients like ISO 7637-2 Pulse 5a without failure |
| Reverse Leakage ID | 1.0 µA max at VWM - prevents excessive quiescent current in battery-powered circuits |
| Operating Temperature | -55 °C to +175 °C - supports under-hood automotive and industrial ambient conditions |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded, molded epoxy body meeting UL 94 V-0; cathode indicated by color band; RoHS-compliant matte tin plating; JEDEC-standard lead finish per J-STD-002/JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to protected circuit ground or low-side return path; enables clamping when transient exceeds VBR |
| Cathode | Current exit point during forward conduction; marked with color band | Connected to protected line (e.g., 24 V rail or CAN_H); defines polarity-sensitive placement in DC systems |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse power (10/1000 µs) | Withstands high-energy load dump and inductive kick events common in automotive alternator circuits |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules without additional qualification effort |
| Sub-nanosecond response time | Clamps transients before sensitive components experience damaging overvoltage - critical for microcontroller I/O pins |
| UL 497B recognized (QVGQ2) | Meets safety agency requirements for telecom and industrial interface protection without external certification burden |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply inputs in engine control units (ECUs) against ISO 7637-2 load dump pulses and alternator ripple. IC Role / Device Role / Timing Role: Uni-directional TVS placed between power rail and chassis ground to clamp positive transients above 30.8 V. Use Value: Limits rail voltage to ≤49.9 V during 30.1 A surges, preventing damage to MCU power supplies and CAN transceivers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) in PLC I/O modules from field-induced lightning surges. IC Role / Device Role / Timing Role: TVS connected across signal and return paths to absorb fast-rising transients before reaching op-amp input stages. Use Value: Maintains signal integrity by clamping induced spikes within 1 ns, avoiding latch-up or offset drift in precision amplifiers. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding Ethernet PHY power pins and bias rails in outdoor telecom base station line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 3.3 V/5 V bias rails feeding Ethernet magnetics and PHY ICs. Use Value: Absorbs 1500 W transient energy without degradation, ensuring uninterrupted data link operation after surge events. |
Use Scenario: Suppressing back-EMF from brushed DC motors in smart home appliances (e.g., washing machine drum drives). IC Role / Device Role / Timing Role: TVS mounted across motor terminals to clamp inductive kick during PWM switching and brake events. Use Value: Prevents MOSFET drain-source breakdown by limiting flyback voltage to 49.9 V, extending power stage lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33AHE3/52 | Lower PPPM (600 W), smaller SMB package (vs. axial 1.5KE), 33 V VBR range, 53.3 V VC at 11.8 A | Better suited for space-constrained PCBs; insufficient for 1500 W load dump but adequate for ESD and lower-energy transients | Select when board area is limited and peak surge energy is ≤600 W - not a drop-in replacement for 1N6284AHE3/51 |
| 1.5KE36A-E3/54 | Identical electrical specs and 1.5KE package; differs only in packaging suffix (E3/54 vs. HE3/51) and AEC-Q101 qualification status (HE3 qualified, E3 commercial grade) | Same circuit function and layout compatibility; E3 version lacks AEC-Q101 validation required for automotive production | Choose 1N6284AHE3/51 for automotive OEM programs; use 1.5KE36A-E3/54 only for cost-sensitive commercial applications where qualification is not mandated |
Compared with SMBJ33AHE3/52 and 1.5KE36A-E3/54, the 1N6284AHE3/51 uniquely combines AEC-Q101 qualification, 1500 W pulse rating, and axial-leaded 1.5KE packaging - making it the only option among the three qualified for under-hood automotive use with full load-dump immunity.
Availability
1N6284AHE3/51 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, telecom line cards, and consumer appliance motor drives requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N6284AHE3/51 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, TVS devices, and optoelectronics with emphasis on reliability, automotive qualification, and high-power handling.
The 1N6284AHE3/51 belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for ruggedized overvoltage protection in automotive, industrial, and telecom infrastructure where failure is not acceptable.
FAQ
What is the breakdown voltage range of the 1N6284AHE3/51?
The 1N6284AHE3/51 has a specified breakdown voltage (VBR) range of 34.2 V minimum to 37.8 V maximum at a test current of 1 mA. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable overvoltage detection in 24 V nominal systems where margin above operating voltage is critical.
Is the 1N6284AHE3/51 AEC-Q101 qualified?
Yes, the 1N6284AHE3/51 is explicitly AEC-Q101 qualified per Vishay documentation (Document Number 88301, Revision 11-Oct-16). This qualification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT), confirming its suitability for automotive production applications.
What is the clamping voltage of the 1N6284AHE3/51 at its rated peak pulse current?
The 1N6284AHE3/51 clamps to a maximum of 49.9 V at its rated peak pulse current (IPPM) of 30.1 A under the standard 10/1000 µs waveform. This value represents the upper limit of voltage seen by downstream components during worst-case transient events and is essential for verifying compatibility with protected IC voltage ratings.
Does the 1N6284AHE3/51 have UL recognition?
Yes, the 1N6284AHE3/51 carries Underwriters Laboratories recognition under file number E136766 for both uni-directional and bi-directional devices per UL 497B, covering its use as a protector in telecommunications and industrial signal line applications without requiring additional system-level certification.
What is the maximum reverse leakage current of the 1N6284AHE3/51 at its stand-off voltage?
The 1N6284AHE3/51 specifies a maximum reverse leakage current (ID) of 1.0 µA at its maximum stand-off voltage (VWM) of 30.8 V. This ultra-low leakage ensures minimal power loss in always-on circuits such as automotive body control modules and battery-backed sensor nodes.
1N6284AHE3/51 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):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 30.1A
- 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
1N6284AHE3/51 FAQ
1.How can I place an order for 1N6284AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6284AHE3/51 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 1N6284AHE3/51 reliable?
The price and inventory of 1N6284AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6284AHE3/51 is usually 5 days.
3.What payment methods are accepted for 1N6284AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6284AHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6284AHE3/51?
1N6284AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6284AHE3/51 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 1N6284AHE3/51?
For technical support, including 1N6284AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6284AHE3/51 requirements.
6.How does Aetrix verify that 1N6284AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6284AHE3/51 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 1N6284AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1N6284AHE3/51?
All 1N6284AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6284AHE3/51, 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 1N6284AHE3/51 part is unused and in its original packaging.
Return procedure for 1N6284AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6284AHE3/51 Tags
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