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Vishay General Semiconductor - Diodes Division 1N6268-E3/73
- Part No.:
- 1N6268-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6268-E3/73.pdf
- Description:
- TVS DIODE 6.05VWM 11.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,425
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Product details
Overview
1N6268-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of sensitive electronics. It features a 7.13 V to 7.88 V breakdown voltage (VBR) at 10 mA test current, 6.40 V maximum standoff voltage (VWM), 11.3 V clamping voltage (VC) at 133 A peak pulse current, 1500 W peak pulse power rating with 10/1000 µs waveform, and operates across –55 °C to +175 °C junction temperature range - deployed in DC power rail and signal line protection for industrial control modules.
For engineers reviewing the 1N6268-E3/73 datasheet, 1N6268-E3/73 pinout, 1N6268-E3/73 application, or 1N6268-E3/73 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, polarity marking convention, clamping performance under surge conditions, and direct alternative options for circuit-level ESD and lightning transient suppression.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its clamping action begins at 6.40 V standoff and limits transient voltages to ≤11.3 V at 133 A, enabling robust protection of downstream MOSFETs and ICs without forward conduction during normal operation.
The device complies with JEDEC standard 1.5KE case style, supports 200 A non-repetitive forward surge current (IFSM), and exhibits a +0.061 %/°C temperature coefficient of VBR, ensuring predictable voltage threshold drift across automotive and industrial ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 7.13 V / 7.88 V at 10 mA - defines precise voltage threshold where clamping initiates under controlled test conditions |
| VWM | 6.40 V - maximum continuous reverse operating voltage before leakage exceeds 500 µA |
| VC @ IPPM | 11.3 V at 133 A - peak clamped voltage during 10/1000 µs surge, limiting stress on protected circuitry |
| PPPM | 1500 W - peak pulse power handling capability per single 10/1000 µs transient event |
| IFSM | 200 A - maximum non-repetitive forward surge current (8.3 ms half-sine), critical for inductive switch-off events |
| TJ range | –55 °C to +175 °C - enables deployment in under-hood automotive, motor drives, and industrial power supplies |
| Leakage @ VWM | 500 µA max - ensures minimal standby power loss and signal integrity in high-impedance circuits |
Pinout & Package
1N6268-E3/73 is housed in the industry-standard axial-leaded JEDEC 1.5KE package (Case Style 1.5KE), molded epoxy body with matte tin-plated leads. Polarity is marked by a cathode band at one end; the banded terminal is the cathode (K), and the unmarked terminal is the anode (A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased clamping node | Connected to protected line; conducts during overvoltage to shunt energy to ground or rail |
| Anode (unmarked end) | Reference/return path | Typically tied to system ground or lower-potential rail to complete clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 1500 W 10/1000 µs pulse rating | Supports protection against severe transients including ISO 7637-2 Pulse 5a (load dump) in 12 V systems |
| 0.061 %/°C VBR tempco | Ensures <±0.6 V shift over full –55 °C to +125 °C operating range, minimizing false triggering |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, suitable for lead-free reflow and wave soldering processes |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation required for safety-critical industrial and transportation equipment |
Applications
| DC Power Input Protection | Automotive Sensor Signal Lines |
|---|---|
Use Scenario: 12 V battery-fed microcontroller power supply exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and ground to clamp transients before LDO or DC-DC converter input. Use Value: Limits voltage to ≤11.3 V during 133 A surge, preventing damage to 16 V-rated input capacitors and regulator ICs. |
Use Scenario: CAN or LIN bus lines in engine control units subjected to ESD and coupled ignition noise. IC Role / Device Role / Timing Role: TVS connected line-to-ground on each differential signal pair to suppress common-mode transients. Use Value: Sub-1 ns response ensures clamping occurs before edge-sensitive transceivers experience latch-up or gate oxide rupture. |
| Industrial Motor Drive Control Boards | Telecom Power Feeds |
Use Scenario: Gate driver supply rails in IGBT-based inverters experiencing inductive kickback from coil de-energization. IC Role / Device Role / Timing Role: TVS mounted directly at gate driver IC input pins to absorb fast-rising spikes from PCB trace inductance. Use Value: 1500 W rating handles repetitive 10/1000 µs pulses from PWM switching, maintaining gate voltage integrity. |
Use Scenario: -48 V DC telecom power feed entering remote radio head enclosures exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-stage TVS on input terminals, coordinated with gas discharge tube (GDT) for staged protection. Use Value: 6.40 V VWM allows safe operation at nominal -48 V while clamping >100 V transients to protect downstream DC-DC converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A | Lower PPPM (600 W), smaller SMB package (surface-mount), VBR = 7.78–8.60 V, VC = 11.2 V @ 53.3 A | Best suited for space-constrained PCBs with lower-energy transients; not rated for 200 A IFSM | Select when board area is limited and surge duty cycle is light; verify layout thermal relief for SMB footprint. |
| 1.5KE7.5A-E3/54 | Identical electrical specs and 1.5KE package; differs only in packaging format (tape-and-reel vs. bulk/ammopack) | No functional difference; identical use in same circuits and footprints | Choose for automated SMT assembly requiring 13" tape-and-reel delivery; same clamping and thermal behavior. |
Compared with SMBJ7.0A, 1N6268-E3/73 delivers 2.5× higher pulse power and 2.5× higher surge current handling in a through-hole package ideal for high-reliability power entry points; compared with 1.5KE7.5A-E3/54, it shares identical protection performance but differs in packaging configuration and reel quantity.
Availability
1N6268-E3/73 is available at Aetrix Electronics and suitable for industrial motor controls, automotive body electronics, telecom power interfaces, and embedded power supply designs requiring stable component supply, long-lifecycle support, and RoHS-compliant transient protection.
Supply support for 1N6268-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, MOSFETs, and protection devices with emphasis on reliability, ruggedness, and AEC-Q101 qualification.
The 1N6268-E3/73 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial automation, and infrastructure power systems.
FAQ
What is the breakdown voltage tolerance for 1N6268-E3/73?
The 1N6268-E3/73 has a specified breakdown voltage range of 7.13 V to 7.88 V at 10 mA test current, representing ±5% tolerance around the nominal 7.5 V rating. This tight VBR window ensures consistent clamping onset across production lots and supports reliable coordination with downstream overvoltage protection thresholds in the 1N6268-E3/73 design.
Is 1N6268-E3/73 suitable for automotive applications?
Yes - the 1N6268-E3/73 meets AEC-Q101 requirements when ordered with HE3 suffix (e.g., 1N6268AHE3_B), but the E3/73 variant is commercial-grade. For automotive use, confirm qualification status via Vishay's official documentation; the 1N6268-E3/73 base construction supports under-hood temperatures up to +175 °C junction, making it viable in non-safety-critical modules with proper derating.
How does the 1N6268-E3/73 compare to bidirectional TVS diodes like 1N6268CA?
The 1N6268-E3/73 is unidirectional and intended for DC line-to-ground protection where polarity is fixed; 1N6268CA is bidirectional and used for AC or differential signal lines like RS-485. They share identical VBR, VC, and PPPM, but the 1N6268-E3/73 has a cathode band marking and cannot suppress negative-going transients on positive rails without additional circuitry.
What is the maximum clamping voltage of 1N6268-E3/73 under surge conditions?
The 1N6268-E3/73 clamps to a maximum of 11.3 V at its rated peak pulse current of 133 A (10/1000 µs waveform). This value is guaranteed per datasheet Fig. 7 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events - critical for ensuring compatibility with 12 V logic and power ICs in the 1N6268-E3/73 application.
Can 1N6268-E3/73 be used in parallel for higher surge capacity?
Yes - multiple 1N6268-E3/73 devices can be paralleled to increase total peak pulse power handling, provided matched VBR units are selected and PCB layout ensures equal current sharing (symmetrical trace lengths, shared thermal plane). Derating of 15–20% per added unit is recommended to account for parameter spread; the 1N6268-E3/73 datasheet confirms this practice in Application Notes section.
1N6268-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):
- 6.05V
- Voltage - Breakdown (Min):
- 6.75V
- Voltage - Clamping (Max) @ Ipp:
- 11.7V
- Current - Peak Pulse (10/1000µs):
- 128A
- 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
1N6268-E3/73 FAQ
1.How can I place an order for 1N6268-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6268-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 1N6268-E3/73 reliable?
The price and inventory of 1N6268-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 1N6268-E3/73 is usually 5 days.
3.What payment methods are accepted for 1N6268-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6268-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6268-E3/73?
1N6268-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6268-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 1N6268-E3/73?
For technical support, including 1N6268-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6268-E3/73 requirements.
6.How does Aetrix verify that 1N6268-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1N6268-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 1N6268-E3/73 meets industry standards.
7.What is the process for return or replacement of 1N6268-E3/73?
All 1N6268-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6268-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 1N6268-E3/73 part is unused and in its original packaging.
Return procedure for 1N6268-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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