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Vishay General Semiconductor - Diodes Division 1N6268A-E3/54
- Part No.:
- 1N6268A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1N6268A-E3/54.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,459
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Product details
Overview
1N6268A-E3/54 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, 1500 W peak pulse power (10/1000 µs), and operates across –55 °C to +175 °C junction temperature - deployed in automotive power supply rails and industrial sensor interfaces.
For engineers reviewing the 1N6268A-E3/54 datasheet, 1N6268A-E3/54 pinout, 1N6268A-E3/54 application, or 1N6268A-E3/54 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, JEDEC 1.5KE package mechanical data, and direct alternative options with documented parameter differences.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time (<1 ns) and low incremental surge resistance. Its clamping action begins at 6.40 V (VWM) and limits transient excursions to ≤11.3 V at 133 A (10/1000 µs), enabling reliable protection of downstream MOSFETs and ICs against inductive switching spikes and ESD events.
The device complies with JEDEC standard 1.5KE case outline, supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits a +0.061 %/°C temperature coefficient of VBR. Thermal resistance is 75 °C/W (junction-to-ambient) and 15.4 °C/W (junction-to-lead), confirming suitability for lead-mounted PCB designs without heatsinking under moderate duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA - defines precise conduction onset threshold for overvoltage detection |
| VWM | 6.40 V - maximum continuous reverse operating voltage before leakage exceeds 500 µA |
| VC @ IPPM | 11.3 V at 133 A - clamped voltage during 1500 W transient, limiting stress on protected circuitry |
| PPPM | 1500 W (10/1000 µs waveform) - peak surge energy handling capacity per single event |
| IFSM | 200 A (8.3 ms half-sine) - withstands high-current inrush without bond wire failure |
| TJ range | –55 °C to +175 °C - enables deployment in under-hood automotive and industrial environments |
| Package | JEDEC 1.5KE - axial-leaded, epoxy-molded case rated UL 94 V-0, RoHS-compliant (E3 suffix) |
Pinout & Package
1N6268A-E3/54 is housed in the JEDEC-standard 1.5KE axial package: molded epoxy body over passivated junction, matte tin-plated leads, 0.375" (9.5 mm) lead length, 0.210" (5.3 mm) body diameter. The cathode is marked by a color band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode | Current exit point during forward conduction; clamping node in reverse bias | Connected to protected line (e.g., 5 V rail); conducts when line voltage exceeds VWM, shunting surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) in properly filtered systems |
| Sub-nanosecond response time | Clamps transients before sensitive ICs experience damaging overvoltage (e.g., <10 ns propagation delay) |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising surges (e.g., EFT/burst), improving clamping precision |
| AEC-Q101 qualification option (HE3 suffix) | Validated for automotive powertrain and chassis applications requiring zero-defect reliability |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and ground, conducting only during positive overvoltage events. Use Value: Limits clamped voltage to 11.3 V, preventing damage to 16 V-rated LDOs and microcontrollers while surviving 1500 W surges. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and field-induced surges in factory automation. IC Role / Device Role / Timing Role: TVS connected between signal line and local ground, absorbing ±8 kV contact ESD per IEC 61000-4-2. Use Value: Sub-ns response ensures clamping initiates before op-amp input stages exceed absolute maximum ratings. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Protection |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifier and controller ICs against lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Mounted across bridge rectifier output, clamping voltage spikes before bulk capacitor and PWM controller. Use Value: 1500 W rating handles 10/1000 µs surges up to 1.5 kV, reducing need for multi-stage protection networks. |
Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras) from induced surges on 48 V DC feeder lines. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC+ and ground, suppressing common-mode transients entering via Ethernet cable shield. Use Value: 6.40 V VWM allows operation with 48 V nominal supply while clamping to 11.3 V during 133 A surges. |
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 (surface-mount), VBR = 7.78–8.60 V, VC = 12.0 V @ 50 A | Not suitable for 1500 W surge requirements; used where board space is constrained and surge levels are ≤600 W | Select SMBJ7.0A only if system-level surge testing confirms 600 W is sufficient and SMT assembly is preferred. |
| 1.5KE7.5A | Identical electrical specs and 1.5KE package; differs only in ordering code (no -E3/54 tape-and-reel designation) | No functional difference; same clamping, thermal, and reliability behavior in circuit | 1.5KE7.5A is functionally identical but lacks RoHS-compliant E3 plating and 1400-unit reel packaging - use only if compliance and logistics are not required. |
Compared with SMBJ7.0A, 1N6268A-E3/54 delivers 2.5× higher surge power handling and axial-leaded through-hole mounting for high-reliability power stages; versus 1.5KE7.5A, it adds RoHS compliance, JESD 201 Class 1A whisker resistance, and standardized tape-and-reel delivery for automated manufacturing.
Availability
1N6268A-E3/54 is available at Aetrix Electronics and suitable for automotive power distribution modules, industrial PLC analog I/O protection, and telecom DC power feeders requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1N6268A-E3/54 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, MOSFETs, and protection devices with emphasis on reliability, thermal performance, and automotive-grade qualification.
The 1N6268A-E3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against lightning, EFT, and load dump is mandatory.
FAQ
What is the breakdown voltage tolerance for 1N6268A-E3/54?
The 1N6268A-E3/54 has a specified breakdown voltage (VBR) range of 7.13 V to 7.88 V at 10 mA test current, representing a ±5 % tolerance around the nominal 7.5 V rating. This tight tolerance ensures consistent clamping onset across production lots and supports predictable overvoltage protection design margins in safety-critical circuits.
Is 1N6268A-E3/54 RoHS compliant and lead-free?
Yes, the "E3" suffix in 1N6268A-E3/54 indicates full RoHS compliance per Directive 2011/65/EU, with matte tin-plated leads and no lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE. It also meets JESD 201 Class 1A whisker resistance requirements, making it suitable for high-reliability commercial and industrial applications.
What is the maximum clamping voltage of 1N6268A-E3/54 under surge conditions?
The maximum clamping voltage (VC) of 1N6268A-E3/54 is 11.3 V at 133 A peak pulse current (10/1000 µs waveform). This value is guaranteed per datasheet and reflects worst-case voltage seen by protected circuitry during a full 1500 W transient event - critical for verifying that downstream components remain within absolute maximum ratings.
Can 1N6268A-E3/54 be used in bidirectional configurations?
No, 1N6268A-E3/54 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional variants (e.g., 1N6268CA) exist in the same family but are distinct orderable parts. Using 1N6268A-E3/54 in bidirectional applications would result in forward conduction during negative transients, causing failure or incorrect protection behavior.
What is the thermal resistance and derating behavior of 1N6268A-E3/54?
The 1N6268A-E3/54 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15.4 °C/W. Power dissipation must be derated linearly above 25 °C ambient: at 75 °C lead temperature, rated power drops to 6.5 W (per Fig. 5), and full derating applies beyond that point to maintain TJ ≤ 175 °C.
1N6268A-E3/54 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:
- Active
- 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-E3/54 FAQ
1.How can I place an order for 1N6268A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6268A-E3/54 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 1N6268A-E3/54 reliable?
The price and inventory of 1N6268A-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6268A-E3/54 is usually 5 days.
3.What payment methods are accepted for 1N6268A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6268A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6268A-E3/54?
1N6268A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6268A-E3/54 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 1N6268A-E3/54?
For technical support, including 1N6268A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6268A-E3/54 requirements.
6.How does Aetrix verify that 1N6268A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1N6268A-E3/54 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 1N6268A-E3/54 meets industry standards.
7.What is the process for return or replacement of 1N6268A-E3/54?
All 1N6268A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6268A-E3/54, 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 1N6268A-E3/54 part is unused and in its original packaging.
Return procedure for 1N6268A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6268A-E3/54 Tags
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