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Vishay General Semiconductor - Diodes Division 1N6284A-E3/51
- Part No.:
- 1N6284A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6284A-E3/51.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,687
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Product details
Overview
1N6284A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in power rails and signal lines. It features a 34.2 V to 37.8 V breakdown voltage (VBR) at 1 mA, 30.8 V stand-off voltage (VWM), 49.9 V clamping voltage (VC) at 30.1 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the 1N6284A-E3/51 datasheet, 1N6284A-E3/51 pinout, 1N6284A-E3/51 application, or 1N6284A-E3/51 equivalent, this device is evaluated for fast transient suppression in DC power distribution, automotive body electronics, and telecom line protection where sub-nanosecond response, low clamping ratio, and AEC-Q101-compliant variants are critical selection criteria.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for high-energy transient absorption without degradation under repetitive surges. Its 10/1000 µs waveform rating reflects standardized lightning-surge immunity testing per IEC 61000-4-5, and its 0.099 %/°C temperature coefficient of VBR ensures stable clamping across -55 °C to +175 °C operating range.
The device operates with a 3.5 V forward voltage at 100 A surge (per JEDEC spec), exhibits 1 µA max reverse leakage at VWM, and achieves <1 ns response time due to avalanche breakdown physics - enabling protection of sensitive CMOS inputs and gate drivers before damage thresholds are exceeded.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - defines minimum voltage at which avalanche conduction begins; sets lower bound for protected circuit's overvoltage trip point |
| VWM | 30.8 V - maximum continuous working voltage; must exceed normal operating rail voltage to prevent leakage or false triggering |
| VC @ IPPM | 49.9 V at 30.1 A - clamped voltage during 1500 W transient; determines maximum stress imposed on downstream components |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform; validates robustness against IEC 61000-4-5 Level 4 surges |
| IFSM | 200 A - non-repetitive forward surge current (8.3 ms half-sine); supports single-event inrush or fault-current limiting |
| TJ max. | +175 °C - maximum junction temperature; enables use in under-hood automotive or high-ambient industrial environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package; compatible with through-hole PCB assembly and manual rework |
Pinout & Package
1N6284A-E3/51 is housed in a DO-201AD (Case Style 1.5KE) axial-leaded package with cathode indicated by a color band. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and rated for solder dip at 275 °C for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance reference; completes clamping loop during reverse-biased surge events |
| Cathode | Avalanche conduction terminal | Connected to protected line; conducts when line voltage exceeds VBR, shunting surge energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics over lifetime and temperature; eliminates surface contamination-induced leakage drift |
| 1500 W peak pulse power (10/1000 µs) | Validates compliance with IEC 61000-4-5 surge immunity requirements for industrial and automotive equipment |
| Clamping ratio (VC/VBR) ≈ 1.39 | Indicates tight voltage control during transients - lower ratio reduces stress on protected ICs versus higher-ratio suppressors |
| Response time < 1 ns | Ensures protection activation before ESD or lightning-induced transients propagate into sensitive logic or analog front-ends |
| RoHS-compliant, commercial-grade (E3 suffix) | Meets JESD 201 Class 1A whisker resistance; suitable for consumer, computing, and general industrial applications |
Applications
| DC Power Rail Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24 V battery-fed microcontroller supply rail exposed to load-dump transients up to 60 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between rail and chassis ground; clamps surges within 1 ns to limit voltage to ≤49.9 V. Use Value: Prevents permanent latch-up or gate oxide rupture in MCU power pins during ISO 7637-2 Pulse 5a events. |
Use Scenario: LIN bus transceiver input subjected to coupled noise from window motor switching. IC Role / Device Role / Timing Role: TVS connected anode-to-ground, cathode-to-LIN line; absorbs bidirectional spikes while preserving signal integrity. Use Value: Maintains LIN physical layer compliance by limiting differential noise to <1 Vpp during 100 ns transients. |
| Industrial Sensor Interface | Telecom Line Card Protection |
Use Scenario: 4–20 mA current-loop transmitter output routed through long cables near AC motors. IC Role / Device Role / Timing Role: TVS installed across output terminals to clamp inductive kickback from relay coils or solenoids. Use Value: Limits induced voltage to ≤49.9 V, preventing damage to precision op-amps and DACs in analog signal chain. |
Use Scenario: RJ45 Ethernet port on DSLAM line card exposed to lightning-induced common-mode surges on twisted-pair lines. IC Role / Device Role / Timing Role: Paired unidirectional 1N6284A-E3/51 devices (line-to-ground) supplement gas discharge tube primary protection. Use Value: Provides secondary clamping with <1 ns response, reducing residual voltage to protect PHY ICs after GDT crowbar action. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | DO-214AA package; 36 V VWM, 58.1 V VC at 25.1 A; 600 W PPPM | Lower power rating and higher clamping voltage; suited for space-constrained PCBs where 1500 W is not required | Select SMBJ36A when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 3 |
| 1.5KE36A-E3/54 | Same electrical specs and DO-201AD package; differs only in tape-and-reel packaging (54 vs. 51) and RoHS compliance documentation | No functional or performance difference; identical thermal, electrical, and mechanical behavior in circuit | Choose 1.5KE36A-E3/54 for automated SMT placement compatibility if using 13" paper tape feeders |
Compared with 1N6284A-E3/51, SMBJ36A offers smaller footprint but reduced surge capacity and higher clamping, while 1.5KE36A-E3/54 is electrically and mechanically identical - differing only in packaging format and reel configuration for manufacturing logistics.
Availability
1N6284A-E3/51 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, and telecom infrastructure requiring stable component supply with full traceability and lifecycle management.
Supply support for 1N6284A-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, and protection devices with emphasis on reliability, ruggedness, and application-specific qualification.
The 1N6284A-E3/51 belongs to Vishay's TRANSZORB® TVS family, engineered for high-energy transient suppression in harsh environments including automotive, industrial, and telecom systems where failure resilience is mandatory.
FAQ
What is the breakdown voltage tolerance of the 1N6284A-E3/51?
The 1N6284A-E3/51 has a specified breakdown voltage (VBR) range of 34.2 V to 37.8 V at 1 mA test current, representing ±5.3% tolerance around the nominal 36 V rating. This tolerance is verified per JEDEC standard test conditions and remains stable across temperature due to its 0.099 %/°C temperature coefficient.
Is the 1N6284A-E3/51 suitable for automotive applications?
The 1N6284A-E3/51 is RoHS-compliant and qualified to commercial-grade specifications. For AEC-Q101-qualified automotive use, Vishay offers the 1.5KE36AHE3_B variant - identical in electrical performance but validated for extended temperature cycling, humidity, and mechanical shock per automotive standards. The 1N6284A-E3/51 itself is not AEC-Q101 certified.
How does the clamping voltage of the 1N6284A-E3/51 compare to its breakdown voltage?
The 1N6284A-E3/51 clamps at 49.9 V when subjected to its rated 30.1 A peak pulse current (10/1000 µs), resulting in a clamping ratio (VC/VBR) of approximately 1.39. This ratio indicates effective voltage limiting - lower than many competing TVS diodes - ensuring protected circuits experience minimal overvoltage stress during surge events.
Can the 1N6284A-E3/51 be used in bidirectional configurations?
No - the 1N6284A-E3/51 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires a CA-suffixed part such as 1.5KE36CA. Using 1N6284A-E3/51 in reverse-biased signal paths will result in forward conduction and potential damage; always verify polarity during layout.
What is the thermal resistance of the 1N6284A-E3/51 in typical PCB mounting?
The 1N6284A-E3/51 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W and junction-to-ambient resistance (RθJA) of 75 °C/W under standard test conditions (lead length = 9.5 mm). Effective heat dissipation depends on PCB copper area and airflow; derating is required above 25 °C ambient per Figure 5 in the Vishay datasheet 88301.
1N6284A-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1N6284A-E3/51 FAQ
1.How can I place an order for 1N6284A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6284A-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 1N6284A-E3/51 reliable?
The price and inventory of 1N6284A-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 1N6284A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1N6284A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6284A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6284A-E3/51?
1N6284A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6284A-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 1N6284A-E3/51?
For technical support, including 1N6284A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6284A-E3/51 requirements.
6.How does Aetrix verify that 1N6284A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6284A-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 1N6284A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1N6284A-E3/51?
All 1N6284A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6284A-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 1N6284A-E3/51 part is unused and in its original packaging.
Return procedure for 1N6284A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6284A-E3/51 Tags
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