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Vishay General Semiconductor - Diodes Division 1N6294-E3/73
- Part No.:
- 1N6294-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6294-E3/73.pdf
- Description:
- TVS DIODE 73.7VWM 131VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,130
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Product details
Overview
1N6294-E3/73 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 86.5 V to 95.5 V breakdown voltage (VBR) at 1 mA, 77.8 V maximum standoff voltage (VWM), 125 V clamping voltage (VC) at 12 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and operates across -55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges.
For engineers reviewing the 1N6294-E3/73 datasheet, 1N6294-E3/73 pinout, 1N6294-E3/73 application, or 1N6294-E3/73 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, bidirectional/unidirectional polarity context, thermal resistance (RθJA = 75 °C/W), and real-world protection use cases - all confirmed from Vishay's official 88301 document revision 09-Aug-2022.
Technical Context
This device functions as a silicon avalanche diode optimized for fast transient suppression with sub-nanosecond response time (1 × 10⁻⁹ s). Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, enabling precise clamping during 10/1000 µs waveform surges up to 1500 W without degradation.
It operates in unidirectional mode only (cathode-banded polarity), supports 200 A non-repetitive forward surge current (IFSM), and exhibits 3.5 V forward voltage (VF) at 100 A - consistent with the 1.5KE220A-and-below group per Vishay's note (3). Thermal performance is defined by RθJL = 15.4 °C/W and derating above TA = 25 °C per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at IT = 1 mA - defines reliable avalanche initiation threshold under standardized test conditions |
| VWM | 77.8 V maximum - ensures no conduction during normal operation up to rated working voltage |
| VC @ IPPM | 125 V at 12 A - limits downstream voltage stress during worst-case 10/1000 µs transient events |
| PPPM | 1500 W (10/1000 µs) - sustains high-energy surges without failure, critical for industrial and automotive surge immunity |
| IFSM | 200 A (8.3 ms half-sine) - withstands repetitive inrush or fault currents in power supply input stages |
| TJ range | -55 °C to +175 °C - enables deployment in under-hood automotive, motor drives, and industrial control environments |
| RθJA | 75 °C/W - determines required PCB copper area or heatsinking for continuous 6.5 W power dissipation at TL = 75 °C |
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" (9.5 mm) lead length, 0.042" (1.07 mm) lead diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to lower-potential side of protected circuit (e.g., ground return path) |
| Cathode (banded end) | Avalanche clamping node | Connected to higher-potential rail (e.g., +12 V supply); absorbs transient energy into ground when VAK exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA at VWM) across temperature and lifetime |
| 1500 W peak pulse power | Provides robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without derating |
| Sub-nanosecond response time | Clamps transients before sensitive downstream logic or analog circuitry experiences overvoltage damage |
| AEC-Q101 qualification option | HE3 variant available for automotive applications requiring validated reliability and stress testing |
| Low incremental surge resistance | Minimizes VC overshoot during high di/dt events, improving protection margin for 3.3 V/5 V ICs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ground, clamping spikes >80 V within <1 ns. Use Value: Prevents latch-up or gate oxide rupture in MCU power management ICs during ISO 7637-2 Pulse 5a events. | Use Scenario: Shielding 4–20 mA current loop transmitters from ESD and field wiring surges. IC Role / Device Role / Timing Role: Standoff-mode protector on loop supply line, conducting only during >77.8 V transients. Use Value: Maintains signal integrity below VWM, avoids false triggering in precision analog front-ends. |
| Consumer Power Adapter Input Stage | MOSFET Gate Driver Protection |
Use Scenario: Secondary-side DC bus protection in AC/DC adapters exposed to mains-borne surges. IC Role / Device Role / Timing Role: Fast-clamping element parallel to bulk capacitor, shunting energy before it reaches PWM controller. Use Value: Enables compliance with UL 62368-1 surge withstand requirements without adding MOV complexity. | Use Scenario: Safeguarding high-side N-channel MOSFET drivers in half-bridge motor controllers. IC Role / Device Role / Timing Role: Cathode tied to driver output, anode to ground - clamps shoot-through induced voltage spikes. Use Value: Limits VDS overshoot to ≤125 V, preventing avalanche failure during rapid dV/dt switching transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70A | Lower VBR (66.5–73.5 V), 600 W PPPM, SMB package (smaller footprint, higher RθJA) | Best suited for space-constrained consumer electronics where 70 V clamping suffices | Select when board area is limited and peak surge energy is ≤600 W; verify thermal margin due to higher RθJA. |
| 1.5KE91A | Identical electrical specs and 1.5KE package; differs only in packaging format (E3/73 vs. E3/54 tape-and-reel) | No functional difference - same die, same test conditions, same qualification | Direct form-fit-function replacement; E3/73 uses 7" reel (750 pcs), E3/54 uses 13" reel (1400 pcs). |
Compared with 1N6294-E3/73, SMBJ70A offers smaller size but reduced surge handling and tighter voltage tolerance, while 1.5KE91A is electrically identical with only packaging logistics differing - making it a seamless drop-in alternative for volume production planning.
Availability
1N6294-E3/73 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and consumer power adapter input stage designs requiring stable component supply, RoHS compliance, and traceable sourcing.
Supply support for 1N6294-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, and protection devices with emphasis on reliability, power handling, and AEC-Q101 qualification.
The 1N6294-E3/73 belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient immunity in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the breakdown voltage range of the 1N6294-E3/73?
The 1N6294-E3/73 has a guaranteed breakdown voltage (VBR) range of 86.5 V to 95.5 V at a test current of 1 mA, as specified in Vishay's Document Number 88301. This range ensures consistent avalanche initiation across production lots and temperature extremes, supporting reliable overvoltage protection in 72–96 V system rails. The 1N6294-E3/73 maintains this specification under JEDEC-standard test conditions and is validated per the full 1.5KE series characterization.
Is the 1N6294-E3/73 unidirectional or bidirectional?
1N6294-E3/73 is a unidirectional TVS diode, indicated by the "A" suffix and presence of a cathode band. It conducts only during reverse-bias overvoltage events - clamping positive transients on the cathode side relative to anode (ground). Bidirectional variants (e.g., 1N6294CA) are separate part numbers and not interchangeable with 1N6294-E3/73. Polarity must be observed during PCB layout to ensure correct protection directionality.
What is the clamping voltage of the 1N6294-E3/73 at its rated peak pulse current?
The 1N6294-E3/73 clamps to a maximum of 125 V at its rated peak pulse current (IPPM) of 12 A, measured using the standard 10/1000 µs waveform. This value represents the upper limit of voltage seen by downstream components during worst-case surge events and is critical for ensuring safe operating margins of protected ICs. The 1N6294-E3/73 achieves this with low incremental surge resistance, minimizing overshoot beyond VC.
Does the 1N6294-E3/73 meet automotive qualification standards?
The base 1N6294-E3/73 is commercial-grade and RoHS-compliant (E3 suffix), but Vishay offers an AEC-Q101 qualified version under the part number 1N6294AHE3_B. That variant undergoes extended stress testing including HTOL, TC, and UHAST, and is documented in the same datasheet (88301) for the 1.5KE6.8AHE3_B to 1.5KE220AHE3_B family. For automotive applications, specify the HE3_B suffix to ensure qualification compliance - the 1N6294-E3/73 itself does not carry AEC-Q101 certification.
What package type and lead finish does the 1N6294-E3/73 use?
The 1N6294-E3/73 uses the JEDEC-standard Case Style 1.5KE package: a molded epoxy body with 0.375" (9.5 mm) lead length and 0.042" (1.07 mm) lead diameter. Its leads are matte tin-plated and compliant with J-STD-002 and JESD 22-B102 solderability standards. The E3 suffix confirms RoHS compliance and JESD 201 Class 1A whisker resistance, making it suitable for reflow and wave soldering processes in high-reliability manufacturing.
1N6294-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):
- 73.7V
- Voltage - Breakdown (Min):
- 81.9V
- Voltage - Clamping (Max) @ Ipp:
- 131V
- Current - Peak Pulse (10/1000µs):
- 11.5A
- 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
1N6294-E3/73 FAQ
1.How can I place an order for 1N6294-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6294-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 1N6294-E3/73 reliable?
The price and inventory of 1N6294-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 1N6294-E3/73 is usually 5 days.
3.What payment methods are accepted for 1N6294-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6294-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6294-E3/73?
1N6294-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6294-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 1N6294-E3/73?
For technical support, including 1N6294-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6294-E3/73 requirements.
6.How does Aetrix verify that 1N6294-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1N6294-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 1N6294-E3/73 meets industry standards.
7.What is the process for return or replacement of 1N6294-E3/73?
All 1N6294-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6294-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 1N6294-E3/73 part is unused and in its original packaging.
Return procedure for 1N6294-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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