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Vishay General Semiconductor - Diodes Division 1N6268HE3/54
- Part No.:
- 1N6268HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6268HE3/54.pdf
- Description:
- TVS DIODE 6.05VWM 11.7VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,917
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Product details
Overview
1N6268HE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary 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), 11.3 V clamping voltage (VC) at 133 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across -55 °C to +175 °C junction temperature range - deployed in automotive power supply input stages and industrial sensor interface protection.
For engineers reviewing the 1N6268HE3/54 datasheet, 1N6268HE3/54 pinout, 1N6268HE3/54 application, or 1N6268HE3/54 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, AEC-Q101 qualification status, thermal resistance (RθJL = 15.4 °C/W), and real-world clamping behavior under transient surge conditions.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) to ESD and lightning-induced transients. Its clamping action limits voltage excursions to ≤11.3 V at 133 A (10/1000 µs), with low incremental surge resistance ensuring minimal overshoot during fast-rising surges up to 200 A non-repetitive forward surge capability.
The device complies with AEC-Q101 stress testing for automotive use and supports soldering per J-STD-002/JESD 22-B102. Its matte tin-plated leads meet JESD 201 Class 2 whisker resistance, and the molded epoxy case meets UL 94 V-0 flammability rating - confirming suitability for high-reliability board-level surge suppression where lead-free assembly and long-term stability are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA - defines precise voltage threshold at which clamping initiates; critical for matching system overvoltage tolerance margins. |
| VWM | 6.40 V - maximum continuous reverse working voltage; ensures no conduction during normal operation, preserving signal integrity. |
| VC @ IPPM | 11.3 V at 133 A (10/1000 µs) - actual clamped voltage seen by protected IC; determines residual stress on downstream components. |
| PPPM | 1500 W - peak transient energy absorption capacity; enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without failure. |
| IFSM | 200 A (8.3 ms half-sine) - non-repetitive surge current handling; supports robustness against load dump events in 12 V automotive systems. |
| TJ Range | -55 °C to +175 °C - extended thermal operating envelope; allows placement near hot components (e.g., power MOSFETs, DC/DC converters). |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance; enables effective heat dissipation through PCB copper pours or chassis mounting. |
Pinout & Package
Package: JEDEC-standard Case Style 1.5KE - axial-leaded, molded epoxy body (1.0" × 0.285", 25.4 mm × 7.2 mm), UL 94 V-0 rated, RoHS-compliant, matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., GND or return path); polarity must be observed to avoid unintended conduction in unidirectional configuration. |
| Cathode (banded end) | Reverse-biased clamping node | Connected to protected line (e.g., 5 V rail, CAN_H); color band identifies cathode - essential for correct orientation in series-connected protection schemes. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over time and temperature; eliminates surface leakage paths that degrade clamping consistency in humid environments. |
| AEC-Q101 qualified | Validated for automotive under-hood applications including engine control units and body electronics - meets stress tests for temperature cycling, HTRB, and ESD. |
| 1500 W peak pulse power (10/1000 µs) | Supports single-event surge immunity up to IEC 61000-4-5 4 kV (2 Ω source impedance), exceeding industrial and automotive surge immunity requirements. |
| Sub-nanosecond response time | Clamps transients within <1 ns - faster than MOVs or polymer-based protectors - preventing latch-up or gate oxide damage in CMOS ICs and MOSFETs. |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth under thermal cycling and humidity; critical for long-life reliability in sealed automotive modules and industrial controllers. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery feed to infotainment head unit exposed to load dump (up to 60 V, 400 ms) and jump-start transients. IC Role / Device Role: Primary clamping element placed between input fuse and DC/DC converter input. Use Value: Limits voltage to ≤11.3 V during 133 A surge, protecting downstream LDOs and microcontrollers without derating or thermal shutdown. |
Use Scenario: 4–20 mA current loop interface in factory automation PLC I/O module subject to field wiring ESD and inductive kickback. IC Role / Device Role: Unidirectional shunt protector across analog input terminals, referenced to system ground. Use Value: Clamps transients before they reach precision op-amps and ADC front-ends, maintaining measurement accuracy and avoiding reset events. |
| Telecom Line Interface Protection | Consumer Power Adapter Output Protection |
Use Scenario: DC power input (5 V/9 V) of VoIP phone adapter connected to PoE-powered switch with potential ground loop surges. IC Role / Device Role: Secondary overvoltage clamp after primary DC/DC stage, safeguarding USB controller and Ethernet PHY. Use Value: Absorbs 1500 W surge energy without degradation, enabling compliance with GR-1089-CORE telecom immunity standards. |
Use Scenario: Output rail of wall-mounted AC/DC adapter powering smart home hub, exposed to mains-borne transients via shared building wiring. IC Role / Device Role: Final-stage TVS across output capacitor, directly upstream of connector pins. Use Value: Prevents transient coupling into USB-C or Ethernet ports, eliminating user-reported "phantom disconnects" during nearby lightning events. |
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 (3.5 mm × 4.6 mm), VC = 11.2 V @ 53.3 A | Targeted at space-constrained consumer electronics; insufficient for automotive load dump per ISO 7637-2 Pulse 5a. | Select 1N6268HE3/54 when 1500 W surge handling and AEC-Q101 qualification are mandatory; choose SMBJ7.0A only for cost-sensitive, low-energy signal-line protection. |
| 1.5KE7.5A-E3/54 | Identical electrical specs and AEC-Q101 qualification; differs only in packaging suffix (E3 vs HE3) - HE3 denotes JESD 201 Class 2 whisker resistance, E3 is Class 1A. | No functional difference in clamping or thermal performance; both share same 1.5KE case and pinout. | 1N6268HE3/54 is preferred for automotive modules requiring enhanced whisker resistance; 1.5KE7.5A-E3/54 remains suitable for commercial-grade industrial equipment. |
Compared with SMBJ7.0A, 1N6268HE3/54 delivers 2.5× higher surge power handling and automotive qualification; versus 1.5KE7.5A-E3/54, it adds Class 2 whisker resistance for extended reliability in thermally cycled automotive environments - making it the optimal choice for safety-critical 12 V rail protection.
Availability
1N6268HE3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power input stages requiring stable component supply, long-lifecycle support, and AEC-Q101 traceability.
Supply support for 1N6268HE3/54 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, thermal performance, and automotive-grade qualification.
The 1N6268HE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be eliminated through proven surge robustness.
FAQ
What is the breakdown voltage tolerance for 1N6268HE3/54?
The 1N6268HE3/54 has a specified breakdown voltage (VBR) 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 distribution ensures predictable clamping onset across production lots and supports accurate margining in 5 V or 6 V system designs where overvoltage thresholds must remain within strict limits.
Is 1N6268HE3/54 suitable for bidirectional transient protection?
No, 1N6268HE3/54 is a unidirectional TVS diode - its cathode band indicates polarity, and it conducts only in reverse bias above VBR. For bidirectional protection, Vishay offers the 1N6268CA variant (or 1.5KE7.5CA). Using 1N6268HE3/54 in AC-coupled or floating signal lines without proper DC biasing will result in asymmetric clamping and possible forward conduction during negative transients.
Does 1N6268HE3/54 require a heatsink for standard operation?
No external heatsink is required for 1N6268HE3/54 under typical transient conditions, as its 1500 W rating applies to single pulses (10/1000 µs) with ≤0.01% duty cycle. However, for repetitive surge events or sustained power dissipation, PCB copper area (≥1 in² per lead) is recommended to leverage its RθJL = 15.4 °C/W and maintain TJ below 175 °C - verified in Vishay's thermal derating curves (Fig. 5).
How does the HE3 suffix affect the reliability of 1N6268HE3/54?
The HE3 suffix on 1N6268HE3/54 indicates compliance with JESD 201 Class 2 whisker resistance testing - a stricter requirement than the Class 1A level met by E3-suffix parts. This enhances long-term reliability in automotive modules subjected to thermal cycling (-40 °C to +125 °C), reducing risk of tin whisker-induced short circuits in sealed enclosures over 15+ year service life.
Can 1N6268HE3/54 be used in parallel to increase surge current handling?
Parallel connection of 1N6268HE3/54 devices is not recommended due to VBR mismatch (±5%), which causes uneven current sharing and thermal runaway in one device. For higher surge ratings, Vishay specifies larger packages (e.g., 3KP series) or recommends using a single higher-rated part like 1N6269HE3/54 (8.2 V) - validated in application note AN940 for coordinated multi-stage protection schemes.
1N6268HE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- 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
1N6268HE3/54 FAQ
1.How can I place an order for 1N6268HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6268HE3/54 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 1N6268HE3/54 reliable?
The price and inventory of 1N6268HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6268HE3/54 is usually 5 days.
3.What payment methods are accepted for 1N6268HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6268HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6268HE3/54?
1N6268HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6268HE3/54 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 1N6268HE3/54?
For technical support, including 1N6268HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6268HE3/54 requirements.
6.How does Aetrix verify that 1N6268HE3/54 is sourced from the original manufacturer or authorized distributors?
All 1N6268HE3/54 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 1N6268HE3/54 meets industry standards.
7.What is the process for return or replacement of 1N6268HE3/54?
All 1N6268HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6268HE3/54, 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 1N6268HE3/54 part is unused and in its original packaging.
Return procedure for 1N6268HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6268HE3/54 Tags
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