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Vishay General Semiconductor - Diodes Division 1N6267A-E3/51
- Part No.:
- 1N6267A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6267A-E3/51.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,270
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Product details
Overview
1N6267A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails and signal lines. It features a 6.45 V to 7.14 V breakdown voltage (VBR) at 10 mA, 5.80 V maximum stand-off voltage (VWM), 1000 µA maximum reverse leakage at VWM, 143 A peak pulse current (IPPM), and clamps transients to 10.5 V at IPPM. It is used in automotive body control modules and industrial sensor interfaces to protect MOSFETs and microcontrollers from inductive switching surges.
For engineers reviewing the 1N6267A-E3/51 datasheet, 1N6267A-E3/51 pinout, 1N6267A-E3/51 application, or 1N6267A-E3/51 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, clamping performance under 10/1000 µs surge, thermal derating behavior, and direct alternatives with documented VBR/VC/IPPM alignment.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, optimized for fast transient response (<1 ns) and low incremental clamping resistance. Its unidirectional polarity uses a cathode band marking, and it complies with JEDEC case style 1.5KE mechanical dimensions and UL 94 V-0 flammability requirements.
The 1N6267A-E3/51 sustains 1500 W peak pulse power per 10/1000 µs waveform at TA = 25 °C, with thermal resistance of 75 °C/W (junction-to-ambient) and 15.4 °C/W (junction-to-lead). It supports 200 A non-repetitive forward surge current (IFSM) and operates across –55 °C to +175 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines reliable avalanche initiation threshold for overvoltage detection |
| VWM | 5.80 V - maximum continuous reverse voltage before significant leakage begins |
| IPPM | 143 A - peak surge current it safely shunts during 10/1000 µs transient without failure |
| VC @ IPPM | 10.5 V - clamped voltage seen by protected circuit during full-rated surge |
| PPPM | 1500 W - peak transient power dissipation capability under standardized surge waveform |
| TJ max. | +175 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 75 °C/W - thermal resistance indicating required board copper area or heatsinking for sustained power handling |
Pinout & Package
Package: JEDEC-standard 1.5KE molded epoxy case (Case Style 1.5KE), axial leaded, RoHS-compliant matte tin-plated leads. Dimensions: 5.3 mm × 5.3 mm × 9.5 mm (L × W × H), lead diameter 1.07 mm, lead spacing 7.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional TVS configuration | Connected to ground or return path; carries surge current to reference plane during clamping |
| Cathode | High-side connection marked by color band | Connected to protected line (e.g., 5 V rail); initiates conduction when line exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges |
| Clamping ratio VC/VBR ≈ 1.55 | Indicates low dynamic impedance for effective voltage limiting without excessive overshoot |
| –55 °C to +175 °C operating range | Validates suitability for under-hood automotive ECUs and industrial motor drives with wide ambient swings |
| AEC-Q101 qualified option available (HE3 suffix) | Confirms stress-tested reliability for automotive electronics where 1N6267A-E3/51 serves as commercial-grade baseline |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects 12 V supply inputs in BCMs from load dump and inductive kickback during relay/coil de-energization. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and LDO input to clamp transients below IC absolute maximum rating. Use Value: Limits voltage to ≤10.5 V during 143 A surge, preventing damage to 16 V-rated regulators and CAN transceivers. |
Use Scenario: Shields 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Front-end clamping device on optocoupler input side, absorbing energy before signal conditioning circuitry. Use Value: Responds in <1 ns to suppress >1 kV transients per IEC 61000-4-5, maintaining input logic integrity without false triggering. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply EMI Filter Stage |
Use Scenario: Safeguards gate drivers and bootstrap circuits in BLDC motor inverters from commutation spikes. IC Role / Device Role / Timing Role: Placed across high-side FET source-drain to clamp shoot-through-induced voltage reversal. Use Value: Withstands 200 A IFSM, enabling survival of repetitive 100 µs motor stall surges without degradation. |
Use Scenario: Installed after AC-DC rectifier but before bulk capacitor to absorb line-side lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp in Class I/II AC input stage, coordinated with MOV and fuse. Use Value: Delivers 1500 W pulse power handling with 75 °C/W RθJA, allowing PCB-mount integration without discrete heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | Lower PPPM (600 W), smaller SMB package (3.5 mm × 4.6 mm), VC = 11.2 V @ 53.3 A | Better suited for space-constrained consumer PCBs; insufficient for 1500 W automotive load dump | Select only if surge energy is ≤0.75 J and layout area is limited; verify IPPM derating at elevated TA |
| 1.5KE6.8A | Identical electrical specs and 1.5KE package; differs only in part numbering convention (JEDEC vs. manufacturer prefix) | No functional or mechanical difference; same footprint, thermal profile, and test compliance | Drop-in replacement with identical sourcing and qualification history; preferred for legacy BOM continuity |
Compared with 1N6267A-E3/51, SMBJ6.8A trades peak power for compactness and lower cost in light-duty applications, while 1.5KE6.8A offers identical performance with JEDEC-standardized nomenclature-making it ideal for design reuse and cross-supplier procurement without requalification.
Availability
1N6267A-E3/51 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply with consistent RoHS-compliant manufacturing and traceable lot documentation.
Supply support for 1N6267A-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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, power handling, and automotive qualification.
The 1N6267A-E3/51 belongs to Vishay's TRANSZORB® family of high-power TVS diodes, engineered specifically for robust transient suppression in harsh environments such as automotive, industrial, and telecom power systems.
FAQ
What is the breakdown voltage tolerance of the 1N6267A-E3/51?
The 1N6267A-E3/51 has a specified breakdown voltage (VBR) range of 6.45 V to 7.14 V at 10 mA test current, representing ±5% tolerance around the nominal 6.8 V rating. This tight distribution ensures predictable clamping onset across production lots and supports reliable coordination with downstream overvoltage protection thresholds in the 1N6267A-E3/51's target applications.
Is the 1N6267A-E3/51 suitable for bidirectional transient suppression?
No, the 1N6267A-E3/51 is a unidirectional TVS diode, indicated by the "A" suffix and absence of "CA" in its designation. It conducts only in reverse bias above VBR; for bidirectional protection, Vishay offers the 1N6267CA variant. Using the 1N6267A-E3/51 in AC-coupled or floating signal paths would leave positive-going transients unprotected.
What is the maximum clamping voltage of the 1N6267A-E3/51 under rated surge conditions?
The 1N6267A-E3/51 clamps to a maximum of 10.5 V when subjected to its rated 143 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case surge events, ensuring compatibility with 5 V and 3.3 V logic interfaces downstream of the 1N6267A-E3/51.
Does the 1N6267A-E3/51 meet automotive qualification standards?
The base 1N6267A-E3/51 is commercial-grade; however, Vishay offers the AEC-Q101-qualified 1N6267AHE3_B variant with identical electrical specs and 1.5KE packaging. The 1N6267A-E3/51 itself is not AEC-Q101 certified, so for automotive safety-critical modules, designers must specify the HE3 suffix version or validate equivalency per their internal qualification process.
How does thermal derating affect the 1N6267A-E3/51's surge capability above 25 °C?
The 1N6267A-E3/51's peak pulse power (PPPM) is derated linearly above 25 °C ambient, dropping to ~75% at 75 °C and ~50% at 125 °C per Vishay's Fig. 2. This means its effective IPPM at 100 °C ambient falls to approximately 100 A, requiring system-level thermal management or surge margin adjustment when deployed in high-temperature enclosures or near heat sources.
1N6267A-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):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 143A
- 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
1N6267A-E3/51 FAQ
1.How can I place an order for 1N6267A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6267A-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 1N6267A-E3/51 reliable?
The price and inventory of 1N6267A-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 1N6267A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1N6267A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6267A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6267A-E3/51?
1N6267A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6267A-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 1N6267A-E3/51?
For technical support, including 1N6267A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6267A-E3/51 requirements.
6.How does Aetrix verify that 1N6267A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1N6267A-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 1N6267A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1N6267A-E3/51?
All 1N6267A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6267A-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 1N6267A-E3/51 part is unused and in its original packaging.
Return procedure for 1N6267A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6267A-E3/51 Tags
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