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Vishay General Semiconductor - Diodes Division 1N6268HE3/73
- Part No.:
- 1N6268HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6268HE3/73.pdf
- Description:
- TVS DIODE 6.05VWM 11.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,336
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Product details
Overview
1N6268HE3/73 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 7.13 V to 7.88 V breakdown voltage (VBR) at 10 mA, 6.40 V standoff voltage (VWM), 1500 W peak pulse power (10/1000 µs), clamping voltage of 11.3 V at 133 A, and operates from –55 °C to +175 °C - used in automotive power supply input stages and industrial sensor interface protection.
For engineers reviewing the 1N6268HE3/73 datasheet, 1N6268HE3/73 pinout, 1N6268HE3/73 application, or 1N6268HE3/73 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, AEC-Q101 qualification status, thermal resistance data, and real-world design context for ESD/lightning transient suppression in 12 V/24 V systems.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast clamping response (<1 ns) under high-energy transients. Its low incremental surge resistance and tight VBR tolerance (±5%) ensure consistent clamping behavior across temperature and production lots.
The device complies with JEDEC standard 1.5KE case style, supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits a 0.061 %/°C temperature coefficient of VBR, enabling stable performance in automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA - defines precise clamping onset threshold for 12 V rail protection |
| 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 1500 W transient, limiting downstream IC stress |
| PPPM | 1500 W (10/1000 µs waveform) - sustains high-energy surges common in automotive load-dump events |
| TJ max | +175 °C - enables placement near hot components (e.g., power MOSFETs, DC-DC inductors) |
| RθJA | 75 °C/W - informs heatsinking requirements when operated near PD = 6.5 W derated limit |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test conditions including HTRB, HTGB, and TCT |
Pinout & Package
Package: JEDEC 1.5KE molded epoxy case (DO-201AD), axial leaded, RoHS-compliant matte tin plating. Cathode indicated by color band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to protected line (e.g., 12 V supply) when used as shunt clamp |
| Cathode | Current exit point in forward bias; clamping node in reverse bias | Connected to ground or low-impedance return path; carries full surge current during transient |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable VBR and low leakage (<500 µA at VWM) over lifetime and temperature cycling |
| 1500 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 5a load-dump surges without degradation in automotive ECUs |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including 1000-cycle temperature cycling and unbiased HAST |
| Low clamping ratio (VC/VBR ≈ 1.49) | Minimizes voltage overshoot during fast transients, protecting 5 V/3.3 V logic downstream of LDOs |
| 0.061 %/°C VBR tempco | Ensures predictable clamping window across –40 °C to +125 °C ambient operating range |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 12 V battery feed to engine control unit exposed to ISO 7637-2 load-dump transients up to 60 V/100 ms. IC Role / Device Role: Primary shunt clamp absorbing >95 % of surge energy before it reaches DC-DC converter input. Use Value: Limits voltage seen by upstream fuse and downstream regulator to ≤11.3 V, preventing latch-up or gate oxide rupture in PMICs. | Use Scenario: 4–20 mA current loop interface in factory automation PLC I/O module subjected to field wiring ESD and inductive kick. IC Role / Device Role: Bidirectional protection not applicable; this unidirectional part placed anode-to-line to clamp negative transients only. Use Value: Suppresses –1 kV contact ESD (IEC 61000-4-2) on analog input while maintaining <1 µA leakage at 6.4 V operating voltage. |
| Consumer Power Adapter Surge Guard | Telecom DSL Line Transient Suppression |
Use Scenario: Secondary-side 5 V output of AC/DC adapter subjected to conducted surges from mains coupling or nearby switching noise. IC Role / Device Role: Low-capacitance shunt protector placed between VOUT and GND to clamp positive excursions. Use Value: Clamps 1500 W transients within 1 ns, preserving USB port compliance and preventing brownout resets in connected devices. | Use Scenario: DSL line driver/receiver circuit exposed to lightning-induced surges on twisted-pair telephone lines. IC Role / Device Role: Unidirectional TVS on line-side of isolation transformer to protect PHY IC from positive-going surges. Use Value: Withstands 10/1000 µs surges up to 133 A while maintaining <10 pF junction capacitance, avoiding signal integrity loss at 2 MHz ADSL bandwidth. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A-E3/52 | Lower PPPM (600 W), smaller SMB package (JEDEC DO-214AA), VBR = 7.78–8.60 V | Not AEC-Q101 qualified; suitable for commercial-grade consumer power supplies only | Select when board space is constrained and automotive qualification is unnecessary |
| 1.5KE7.5AHE3_B | Identical electrical specs and AEC-Q101 qualification; differs only in packaging (tape-and-reel vs. bulk/73) | No functional difference; same thermal and clamping performance in identical PCB layout | Choose for automated SMT assembly requiring 13" tape-and-reel delivery |
Compared with 1N6268HE3/73, SMBJ7.0A-E3/52 offers footprint reduction but sacrifices 60 % peak power handling and automotive qualification; 1.5KE7.5AHE3_B provides identical protection performance with alternate packaging format for pick-and-place compatibility.
Availability
1N6268HE3/73 is available at Aetrix Electronics and suitable for automotive ECU designs, industrial sensor interfaces, and telecom line card development requiring stable component supply with long-term lifecycle assurance.
Supply support for 1N6268HE3/73 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 and automotive-grade validation.
The 1N6268HE3/73 belongs to the TRANSZORB® 1.5KE family, engineered specifically for high-energy transient suppression in harsh environments where robustness, repeatable clamping, and AEC-Q101 compliance are mandatory.
FAQ
What is the breakdown voltage range of the 1N6268HE3/73?
The 1N6268HE3/73 has a guaranteed breakdown voltage (VBR) range of 7.13 V to 7.88 V measured at 10 mA test current, per Vishay Document 88301. This tight ±5 % tolerance ensures predictable clamping onset in 12 V system protection circuits and aligns with ISO 16750-2 supply voltage variation limits. The 1N6268HE3/73 maintains this specification across its full operating temperature range.
Is the 1N6268HE3/73 AEC-Q101 qualified?
Yes, the 1N6268HE3/73 is AEC-Q101 qualified, as confirmed by Vishay's ordering information note indicating HE3 suffix devices (including 1.5KE6.8AHE3_B through 1.5KE220AHE3_B) meet the standard. This qualification covers stress tests such as high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing - critical for automotive under-hood deployment of the 1N6268HE3/73.
What is the clamping voltage of the 1N6268HE3/73 at its rated peak pulse current?
The 1N6268HE3/73 clamps to a maximum of 11.3 V at its peak pulse current (IPPM) of 133 A, defined under the 10/1000 µs waveform per JEDEC standards. This value is measured after the device fully transitions into avalanche conduction and represents the upper bound of voltage imposed on protected circuitry during worst-case surge events - a key parameter for validating safe operation of downstream 5 V or 3.3 V ICs in systems using the 1N6268HE3/73.
Does the 1N6268HE3/73 have bidirectional capability?
No, the 1N6268HE3/73 is a unidirectional TVS diode. Its polarity is marked by a cathode band, and it conducts only in reverse breakdown to clamp positive transients relative to ground. For bidirectional protection, Vishay offers CA-suffixed variants (e.g., 1N6268CA); the 1N6268HE3/73 must be oriented with cathode toward the protected line to function correctly in its intended unidirectional configuration.
What package type does the 1N6268HE3/73 use, and what are its mechanical dimensions?
The 1N6268HE3/73 uses the JEDEC 1.5KE case (DO-201AD): axial-leaded, molded epoxy body with 0.375" (9.5 mm) lead length, 0.210" (5.3 mm) body diameter, and 1.0" (25.4 mm) minimum overall length. Its leads are matte tin-plated per J-STD-002 and JESD 22-B102, and the HE3 suffix confirms compliance with JESD 201 Class 2 whisker resistance - essential for long-term reliability in the 1N6268HE3/73's target applications.
1N6268HE3/73 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1N6268HE3/73 FAQ
1.How can I place an order for 1N6268HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6268HE3/73 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 1N6268HE3/73 reliable?
The price and inventory of 1N6268HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6268HE3/73 is usually 5 days.
3.What payment methods are accepted for 1N6268HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6268HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6268HE3/73?
1N6268HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6268HE3/73 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 1N6268HE3/73?
For technical support, including 1N6268HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6268HE3/73 requirements.
6.How does Aetrix verify that 1N6268HE3/73 is sourced from the original manufacturer or authorized distributors?
All 1N6268HE3/73 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 1N6268HE3/73 meets industry standards.
7.What is the process for return or replacement of 1N6268HE3/73?
All 1N6268HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6268HE3/73, 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 1N6268HE3/73 part is unused and in its original packaging.
Return procedure for 1N6268HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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