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Vishay General Semiconductor - Diodes Division 1N6294A-E3/54
- Part No.:
- 1N6294A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6294A-E3/54.pdf
- Description:
- TVS DIODE 77.8VWM 125VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,698
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Product details
Overview
1N6294A-E3/54 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, and 1500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1N6294A-E3/54 datasheet, 1N6294A-E3/54 pinout, 1N6294A-E3/54 application, or 1N6294A-E3/54 equivalent, this part delivers verified clamping performance, RoHS-compliant matte tin-plated leads, JEDEC-standard 1.5KE package compatibility, and AEC-Q101 qualification options (HE3 suffix variants) - critical for automotive power supply protection and industrial control I/O hardening.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds VBR, it avalanches into low-impedance conduction, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM).
It supports 10/1000 µs surge waveforms up to 12 A peak pulse current (IPPM), with thermal resistance of 15.4 °C/W (junction-to-lead) and 75 °C/W (junction-to-ambient), enabling reliable operation up to +175 °C junction temperature under pulsed conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at 1 mA - defines precise avalanche initiation threshold for repeatable clamping onset |
| VWM | 77.8 V - maximum continuous reverse operating voltage before leakage rises above 1 µA |
| VC @ IPPM | 125 V at 12 A - clamped voltage during 10/1000 µs surge, limiting stress on protected ICs |
| PPPM | 1500 W - peak pulse power handling capability per single 10/1000 µs transient event |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms half-sine), relevant for fault-current limiting |
| TJ max. | +175 °C - maximum junction temperature, supporting high-ambient industrial and automotive under-hood use |
| Package | JEDEC 1.5KE - axial-leaded, molded epoxy case (UL 94 V-0), lead length 9.5 mm, compatible with through-hole PCB assembly |
Pinout & Package
1N6294A-E3/54 uses a two-terminal axial-leaded package (Case Style 1.5KE). The cathode is marked by a color band on the body; polarity must be observed in series connection with DC power rails.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or surge shunting | Connected to ground or low-impedance return path in unidirectional clamp configuration |
| Cathode | Current exit point during avalanche conduction | Connected to protected line (e.g., +12 V rail); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and low leakage (<1 µA) across temperature and life cycle |
| 1500 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation |
| Fast response time (~1 ns) | Clamps transients before sensitive logic or analog circuits experience overvoltage damage |
| RoHS-compliant matte tin plating | Meets J-STD-002 solderability and JESD 22-B102 reliability standards for automated assembly |
| AEC-Q101 qualified variants available | HE3 suffix versions certified for automotive power electronics per stress-test requirements |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-connected ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp spikes up to ±100 V. Use Value: Limits rail voltage to ≤125 V during 10/1000 µs surges, preventing gate oxide rupture in power MOSFETs and regulator ICs. |
Use Scenario: Hardening 24 V digital input channels in programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Front-end transient suppressor on optocoupler input side, absorbing inductive kickback from solenoid drivers. Use Value: Clamps transients within 1 ns while maintaining <1 µA leakage at 24 V nominal, preserving input threshold accuracy. |
| Telecom Line Interface Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding RS-485 transceivers on outdoor telecom nodes exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS on VCC supply line, coordinated with primary GDT or MOV stages. Use Value: Provides low-clamping-voltage backup protection (125 V) after upstream components absorb bulk energy, ensuring transceiver survival. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in home appliances (e.g., washing machine drive circuits). IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp commutation spikes before they reach H-bridge FETs. Use Value: Handles repetitive 200 A surge peaks (8.3 ms) without parameter shift, extending MOSFET lifetime in high-cycle applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85A | DO-214AA package, 85 V VWM, 135 V VC @ 11.1 A, 600 W PPPM | Lower power rating and surface-mount only; suited for space-constrained PCBs but not direct replacement for through-hole 1.5KE footprint | Select SMBJ85A only when board layout allows SMD placement and system surge energy is ≤600 W. |
| 1.5KE91A | Same 1.5KE package, identical electrical specs (VBR, VWM, VC, PPPM), E3/54 tape-and-reel variant differs only in packaging format | No functional difference; 1.5KE91A-E3/54 is manufacturer-equivalent part number with identical device die and test criteria | 1.5KE91A-E3/54 may be substituted directly if sourcing flexibility or alternate reel size (e.g., 1400 pcs/reel) is required. |
Compared with 1N6294A-E3/54, SMBJ85A offers smaller footprint but reduced surge capacity and no through-hole option, while 1.5KE91A-E3/54 is electrically and mechanically identical - differing only in part-numbering convention and packaging logistics, not performance or reliability.
Availability
1N6294A-E3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC I/O hardening, telecom line interface shielding, and consumer appliance motor drive circuits requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for 1N6294A-E3/54 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, precision, and automotive-grade qualification.
The 1N6294A-E3/54 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 resilience is mission-critical.
FAQ
What is the breakdown voltage range of the 1N6294A-E3/54?
The 1N6294A-E3/54 has a guaranteed breakdown voltage (VBR) range of 86.5 V to 95.5 V at a test current of 1 mA, measured per JEDEC standard. This tight tolerance ensures consistent clamping behavior across production lots and supports precise overvoltage margin design in 77–96 V systems such as 24 V automotive power networks.
Is the 1N6294A-E3/54 RoHS compliant and lead-free?
Yes, the 1N6294A-E3/54 is RoHS compliant and lead-free. The "E3" suffix explicitly denotes Vishay's commercial-grade, RoHS-compliant version with matte tin-plated leads that meet J-STD-002 solderability and JESD 22-B102 reliability standards. Whisker resistance is certified to JESD 201 Class 1A.
Can the 1N6294A-E3/54 be used in bidirectional configurations?
No, the 1N6294A-E3/54 is a unidirectional TVS diode. Bidirectional variants in the same family use the "CA" suffix (e.g., 1.5KE91CA). Using 1N6294A-E3/54 in reverse-biased AC applications would result in forward conduction and potential failure; always verify polarity during PCB layout and system integration.
What is the clamping voltage of the 1N6294A-E3/54 at its rated peak pulse current?
The 1N6294A-E3/54 clamps to a maximum of 125 V at its rated peak pulse current (IPPM) of 12 A, tested with a 10/1000 µs waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case surge events and is critical for validating safe operating margins of downstream components like MOSFETs and regulators.
Does the 1N6294A-E3/54 have AEC-Q101 qualification?
The base 1N6294A-E3/54 is commercial grade. However, Vishay offers AEC-Q101 qualified equivalents under the HE3 suffix (e.g., 1.5KE91AHE3_B), which undergo extended stress testing including temperature cycling, HTRB, and ESD per AEC-Q101 Rev D. For automotive applications requiring qualification, specify the HE3 variant - not the E3/54 version.
1N6294A-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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
1N6294A-E3/54 FAQ
1.How can I place an order for 1N6294A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6294A-E3/54 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 1N6294A-E3/54 reliable?
The price and inventory of 1N6294A-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6294A-E3/54 is usually 5 days.
3.What payment methods are accepted for 1N6294A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6294A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6294A-E3/54?
1N6294A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6294A-E3/54 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 1N6294A-E3/54?
For technical support, including 1N6294A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6294A-E3/54 requirements.
6.How does Aetrix verify that 1N6294A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1N6294A-E3/54 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 1N6294A-E3/54 meets industry standards.
7.What is the process for return or replacement of 1N6294A-E3/54?
All 1N6294A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6294A-E3/54, 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 1N6294A-E3/54 part is unused and in its original packaging.
Return procedure for 1N6294A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6294A-E3/54 Tags
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