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Vishay General Semiconductor - Diodes Division 1N6268AHE3/51
- Part No.:
- 1N6268AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6268AHE3/51.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,255
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Product details
Overview
1N6268AHE3/51 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 7.13 V minimum breakdown voltage (VBR), 6.40 V maximum stand-off voltage (VWM), 11.3 V clamping voltage at 133 A peak pulse current (VC), 1500 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the 1N6268AHE3/51 datasheet, 1N6268AHE3/51 pinout, 1N6268AHE3/51 application, or 1N6268AHE3/51 equivalent, this part serves as a robust, RoHS-compliant, lead-free TVS solution for protecting MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD events in industrial and automotive systems.
Technical Context
This uni-directional TVS diode operates with a glass-passivated junction and exhibits sub-nanosecond response time (<1 ns), enabling effective suppression of fast-rising transients before sensitive downstream components are stressed. Its low incremental surge resistance and excellent clamping ratio (VC/VBR ≈ 1.59) ensure predictable voltage limiting under 10/1000 µs surge conditions.
The device supports continuous power dissipation of 6.5 W on an infinite heatsink at 75 °C lead temperature and withstands 200 A non-repetitive forward surge current (8.3 ms half-sine). Its thermal resistance from junction to lead is 15.4 °C/W, supporting reliable operation up to 175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 7.13 V - Ensures reliable conduction onset above normal operating voltage (6.40 V VWM) without false triggering |
| VC @ IPPM | 11.3 V at 133 A - Limits transient voltage to safe levels for 3.3 V/5 V logic and power MOSFET gate drivers |
| PPPM | 1500 W (10/1000 µs) - Handles high-energy surges from inductive load switching and lightning-induced transients |
| IFSM | 200 A (8.3 ms half-sine) - Withstands repetitive motor drive or relay coil turn-off surges without degradation |
| TJ max | +175 °C - Enables deployment in under-hood automotive environments and high-temperature industrial enclosures |
| RθJL | 15.4 °C/W - Supports direct PCB copper pour heatsinking without external heatsinks for moderate duty cycles |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronics, including temperature cycling and HTRB |
Pinout & Package
1N6268AHE3/51 is housed in the industry-standard Case Style 1.5KE molded epoxy package (DO-201AD), featuring axial leads with cathode band marking. The device has two terminals: anode and cathode - polarity is unambiguous due to the color band indicating the cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to protected circuit ground or low-side return path | Enables standard placement in series with supply rail or across line-to-ground for uni-directional clamping |
| Cathode | Current exit point during reverse-biased clamping; marked with color band | Must be connected to higher-potential node (e.g., VCC, signal line) to activate clamping when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable leakage performance and long-term reliability under humidity and thermal cycling stress |
| 1500 W peak pulse power (10/1000 µs) | Provides single-event surge immunity exceeding IEC 61000-4-5 Level 4 (4 kV, 2 Ω source) |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS subsystems requiring zero-failure field performance |
| Matte tin-plated leads (J-STD-002 compliant) | Guarantees robust solderability and intermetallic formation control for automated reflow and wave soldering |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and transportation equipment |
Applications
| Automotive Power Supply 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: Uni-directional clamping device placed between battery rail and regulator input. Use Value: Clamps transients to ≤11.3 V, preventing damage to 16 V-rated LDOs and microcontrollers while surviving 200 A surge events. |
Use Scenario: Shielding 4–20 mA current loop transmitters from ESD and cable discharge events. IC Role / Device Role / Timing Role: Line-to-ground TVS on analog input/output terminals. Use Value: Sub-ns response ensures clamping occurs before op-amp input stages saturate or latch up, preserving signal integrity. |
| Consumer Power Adapter Output Protection | MOSFET Gate Driver Protection |
|
Use Scenario: Safeguarding USB-C PD and AC/DC adapter outputs against hot-plug and short-circuit transients. IC Role / Device Role / Timing Role: Output-side TVS suppressing overshoot during dynamic load changes. Use Value: 6.40 V VWM allows compatibility with 5 V ±10 % output rails; 11.3 V VC prevents downstream USB controller damage. |
Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs driven by PWM controllers. IC Role / Device Role / Timing Role: Cathode-to-gate, anode-to-source configuration for bidirectional gate protection. Use Value: Low VC/VBR ratio minimizes clamping overshoot, maintaining gate drive timing integrity during fast switching. |
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 | Lower PPPM (600 W), smaller SMB package (3.5 mm x 3.5 mm), 7.78 V VC @ 64.5 A | Better suited for space-constrained consumer PCBs; insufficient for 1500 W automotive load dump | Select when board area is critical and surge energy is ≤600 W (e.g., USB ports, low-power sensors) |
| 1.5KE7.5AHE3_A | Same electrical specs and 1.5KE package; differs only in revision code (A vs unspecified); identical VBR, VC, and qualification | No functional difference - alternate manufacturer-marked variant within same qualified lot family | Use interchangeably where revision traceability is not mandated; both meet AEC-Q101 and RoHS HE3 requirements |
Compared with SMBJ7.0A, 1N6268AHE3/51 delivers >2.5× peak power handling and superior thermal robustness in the larger DO-201AD package; versus 1.5KE7.5AHE3_A, it offers identical protection performance with no design or layout impact - confirming its role as a fully validated, production-ready AEC-Q101 TVS for demanding DC rail protection.
Availability
1N6268AHE3/51 is available at Aetrix Electronics and suitable for automotive ECU power management, industrial sensor interface protection, and consumer power adapter output safeguarding requiring stable component supply, full AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for 1N6268AHE3/51 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 1N6268AHE3/51 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in harsh environments - emphasizing low clamping voltage, repeatable surge endurance, and AEC-Q101 compliance from wafer to final test.
FAQ
What is the breakdown voltage range for the 1N6268AHE3/51?
The 1N6268AHE3/51 has a specified breakdown voltage (VBR) range of 7.13 V to 7.88 V at 10 mA test current (IT). This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining against system overvoltage thresholds. The value is measured per JEDEC standard and confirmed in Vishay's 88301 datasheet.
Is the 1N6268AHE3/51 suitable for automotive applications?
Yes, the 1N6268AHE3/51 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction - including glass-passivated junction, matte tin-plated leads, UL 94 V-0 epoxy, and 175 °C maximum junction temperature - meets stress-test requirements for engine control, body electronics, and infotainment systems. The HE3 suffix confirms RoHS compliance and AEC-Q101 qualification per Vishay documentation.
What is the clamping voltage of the 1N6268AHE3/51 under surge conditions?
The 1N6268AHE3/51 clamps to a maximum of 11.3 V at its rated peak pulse current of 133 A (10/1000 µs waveform). This clamping voltage is guaranteed across temperature and lifetime, enabling precise protection of 5 V and 3.3 V logic rails. The low VC/VBR ratio reflects optimized silicon design for minimal overshoot during fast transients.
Does the 1N6268AHE3/51 have polarity marking, and how is it identified?
Yes, the 1N6268AHE3/51 is a uni-directional TVS diode with clear polarity marking: a color band (typically black or dark gray) on the cathode end of the DO-201AD package. The cathode must be connected toward the higher-potential node (e.g., VCC, signal line) to enable proper reverse-bias clamping. No marking appears on bi-directional variants - confirming this part's uni-directional identity.
What packaging and reel options are available for the 1N6268AHE3/51?
The 1N6268AHE3/51 ships in 13-inch paper tape and reel format with a base quantity of 1400 units per reel (package code "51"). The "HE3" suffix denotes RoHS-compliant, AEC-Q101-qualified construction with JESD 201 Class 2 whisker resistance. Lead finish is matte tin, compliant with J-STD-002 and JESD 22-B102 for reliable solder joint formation.
1N6268AHE3/51 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):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 133A
- 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
1N6268AHE3/51 FAQ
1.How can I place an order for 1N6268AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6268AHE3/51 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 1N6268AHE3/51 reliable?
The price and inventory of 1N6268AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6268AHE3/51 is usually 5 days.
3.What payment methods are accepted for 1N6268AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6268AHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6268AHE3/51?
1N6268AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6268AHE3/51 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 1N6268AHE3/51?
For technical support, including 1N6268AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6268AHE3/51 requirements.
6.How does Aetrix verify that 1N6268AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6268AHE3/51 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 1N6268AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1N6268AHE3/51?
All 1N6268AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6268AHE3/51, 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 1N6268AHE3/51 part is unused and in its original packaging.
Return procedure for 1N6268AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6268AHE3/51 Tags
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