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Vishay General Semiconductor - Diodes Division 1N6268A-E3/51
- Part No.:
- 1N6268A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6268A-E3/51.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:3,442
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Product details
Overview
1N6268A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power 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), 11.3 V clamping voltage (VC) at 133 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 transients and inductive switching surges.
For engineers reviewing the 1N6268A-E3/51 datasheet, 1N6268A-E3/51 pinout, 1N6268A-E3/51 application, or 1N6268A-E3/51 equivalent, this part delivers verified bidirectional-capable family-level performance with RoHS-compliant matte tin-plated leads, JEDEC 1.5KE package, and AEC-Q101-qualified variants available under HE3 suffix - critical for automotive, industrial, and telecom surge protection design validation.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector, activating within <1 ns when transient voltage exceeds its VBR threshold. Its glass-passivated junction ensures stable avalanche characteristics and low incremental surge resistance, enabling precise clamping at 11.3 V under 133 A 10/1000 µs pulses while maintaining 5.0 µA max reverse leakage at VWM.
The device complies with UL 497B recognition (QVGQ2) and supports 175 °C maximum junction temperature operation. Thermal resistance is specified at RθJA = 75 °C/W and RθJL = 15.4 °C/W, confirming suitability for lead-mounted PCB layouts without heatsinking in moderate-duty-cycle applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA - defines precise avalanche initiation window for repeatable clamping onset |
| VWM | 6.40 V - maximum continuous reverse operating voltage before leakage rises above 5.0 µA |
| VC @ IPPM | 11.3 V at 133 A - clamping voltage during full 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform, supporting IEC 61000-4-5 Level 4 compliance |
| IFSM | 200 A - non-repetitive forward surge rating (8.3 ms half-sine), enabling robust inrush tolerance |
| TJ range | –55 °C to +175 °C - wide operational junction temperature span for under-hood and industrial environments |
| Package | JEDEC 1.5KE - axial-leaded molded epoxy case (UL 94 V-0), 0.375" lead length standard |
Pinout & Package
Package: JEDEC 1.5KE - axial-leaded, molded epoxy body with matte tin-plated leads; cathode indicated by color band; meets J-STD-002 solderability and JESD 201 Class 1A whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side in unidirectional clamp configuration; carries full surge current during forward conduction events |
| Cathode | Avalanche clamping terminal | Marked with color band; referenced to system ground or protected line; sinks transient energy into ground path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable, low-drift avalanche characteristics over temperature and lifetime - critical for consistent clamping accuracy |
| 1500 W peak pulse power (10/1000 µs) | Supports high-energy transient suppression per IEC 61000-4-5 without thermal runaway under defined duty cycle |
| Clamping ratio VC/VBR ≈ 1.48 | Indicates tight voltage control margin - limits protected circuit overvoltage to <48% above breakdown |
| Response time < 1 ns | Enables protection of fast-edge digital interfaces and high-speed analog sensors before damage occurs |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker test and J-STD-002 solderability - qualified for commercial-grade automated assembly |
Applications
| Automotive Power Line 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 shunt TVS placed between power rail and chassis ground to clamp spikes up to ±100 V. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤11.3 V during 133 A surges, preventing latch-up or gate oxide rupture. | Use Scenario: Shielding 4–20 mA current-loop sensor outputs from ESD and field wiring surges. IC Role / Device Role / Timing Role: Bidirectional-capable family member (with CA variant) used across signal pair; here, unidirectional version guards supply-side rail. Use Value: Maintains signal integrity by clamping transients before they couple into precision op-amp front-ends or ADC reference paths. |
| Telecom DSL Line Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding ADSL/VDSL line interface ICs from lightning-induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: Primary shunt protector on tip/ring lines upstream of transformer coupling and line driver ICs. Use Value: Clamps induced kV-level transients to sub-12 V levels within nanoseconds, preserving PHY layer IC reliability per ITU-T K.20/K.21. | Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge supply rails to divert flyback energy. Use Value: Absorbs 1500 W flyback pulses without degradation, extending MOSFET lifespan and eliminating relay contact arcing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1.5KE7.5A-E3/54 | Identical electrical specs and package; same VBR, VWM, VC, and PPPM; differs only in tape-and-reel packaging (54 vs. 51 carrier). | No functional difference; both rated for commercial-grade use with E3 RoHS compliance. | Select 1.5KE7.5A-E3/54 when requiring 1400-unit reel quantity and standard 13" paper tape delivery. |
| SMBJ7.0A | Lower PPPM (600 W), smaller SMB package, higher VC/VBR ratio (≈1.63), and tighter VBR tolerance (5%). | Better suited for space-constrained consumer electronics; insufficient for 1500 W industrial surge requirements. | Choose SMBJ7.0A only for compact board layouts where full 1500 W rating is not mandated by standards or system testing. |
Compared with 1N6268A-E3/51, 1.5KE7.5A-E3/54 offers identical protection performance in alternate packaging, while SMBJ7.0A trades peak power and ruggedness for footprint reduction - making the 1N6268A-E3/51 optimal for high-energy, leaded-mount industrial and automotive applications demanding proven 1500 W capability.
Availability
1N6268A-E3/51 is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface hardening, telecom DSL line safeguarding, and consumer appliance motor drive surge suppression requiring stable component supply and long-term BOM continuity.
Supply support for 1N6268A-E3/51 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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1N6268A-E3/51 belongs to Vishay's TRANSZORB® TVS family - engineered specifically for high-energy transient suppression in harsh environments, targeting compliance with IEC 61000-4-5, ISO 7637-2, and UL 497B standards.
FAQ
What is the breakdown voltage range of the 1N6268A-E3/51?
The 1N6268A-E3/51 has a guaranteed breakdown voltage (VBR) range of 7.13 V to 7.88 V at a test current of 10 mA. This narrow window ensures predictable clamping behavior across manufacturing lots and temperature extremes, directly supporting design margining for 6.40 V maximum working voltage (VWM) applications. The specification is validated per JEDEC test methods and appears in Vishay's official 88301 datasheet revision 09-Aug-2022.
Is the 1N6268A-E3/51 RoHS compliant and lead-free?
Yes, the 1N6268A-E3/51 is RoHS compliant and lead-free. The "E3" suffix explicitly denotes Vishay's commercial-grade, RoHS-compliant construction with matte tin-plated leads that meet J-STD-002 solderability and JESD 201 Class 1A whisker resistance requirements. This makes the 1N6268A-E3/51 suitable for automated reflow and wave soldering in environmentally regulated production environments.
What is the clamping voltage of the 1N6268A-E3/51 at its rated peak pulse current?
The 1N6268A-E3/51 clamps to a maximum of 11.3 V at its rated peak pulse current (IPPM) of 133 A, measured using the standardized 10/1000 µs double-exponential waveform. This value reflects the actual voltage imposed on protected circuitry during worst-case surge events and is critical for verifying compatibility with downstream IC absolute maximum ratings - for example, ensuring microcontroller I/O pins remain below 12 V during transient conditions.
Can the 1N6268A-E3/51 be used in automotive applications?
The base 1N6268A-E3/51 is commercial-grade and not AEC-Q101 qualified; however, Vishay offers the functionally identical 1N6268AHE3_B variant which is AEC-Q101 qualified for automotive use. Engineers designing for under-hood or body-control modules should specify the HE3 suffix version. The 1N6268A-E3/51 itself remains suitable for non-safety-critical automotive subsystems where qualification is not mandated, provided thermal and surge margins are independently validated.
What package type does the 1N6268A-E3/51 use and what are its mechanical dimensions?
The 1N6268A-E3/51 uses the JEDEC-standardized 1.5KE axial-leaded package: molded epoxy body meeting UL 94 V-0 flammability rating, with 0.375" (9.5 mm) lead length and 0.038"–0.042" lead diameter. Its case outline matches industry-standard DO-201AD, enabling drop-in replacement in existing through-hole layouts designed for 1.5 kW TVS diodes - no PCB redesign is needed when migrating from legacy 1.5KE-series parts.
1N6268A-E3/51 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1N6268A-E3/51 FAQ
1.How can I place an order for 1N6268A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6268A-E3/51 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 1N6268A-E3/51 reliable?
The price and inventory of 1N6268A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6268A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1N6268A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6268A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6268A-E3/51?
1N6268A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6268A-E3/51 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 1N6268A-E3/51?
For technical support, including 1N6268A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6268A-E3/51 requirements.
6.How does Aetrix verify that 1N6268A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6268A-E3/51 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 1N6268A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1N6268A-E3/51?
All 1N6268A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6268A-E3/51, 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 1N6268A-E3/51 part is unused and in its original packaging.
Return procedure for 1N6268A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6268A-E3/51 Tags
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