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Vishay General Semiconductor - Diodes Division 1.5SMC68AHE3/57T
- Part No.:
- 1.5SMC68AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68AHE3/57T.pdf
- Description:
- TVS DIODE 58.1VWM 92VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,570
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Product details
Overview
1.5SMC68AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power rails and signal lines. It features a 68 V breakdown voltage (VBR = 64.6–71.4 V at IT = 1.0 mA), 58.1 V stand-off voltage (VWM), 92.0 V maximum clamping voltage (VC) at 16.3 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial DC power inputs.
For engineers reviewing the 1.5SMC68AHE3/57T datasheet, 1.5SMC68AHE3/57T pinout, 1.5SMC68AHE3/57T application, or 1.5SMC68AHE3/57T equivalent, key selection criteria include its AEC-Q101 qualification, SMC (DO-214AB) package thermal performance (RθJA = 75 °C/W), low leakage (<1.0 µA at VWM), and unidirectional polarity with cathode band marking.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under transient overvoltage events exceeding VWM, it avalanches rapidly to clamp the line at ≤92.0 V while diverting up to 16.3 A (10/1000 µs). Its glass-passivated junction ensures stable breakdown and low incremental surge resistance, critical for repeatable clamping in automotive environments.
The device is rated for -65 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and is RoHS-compliant with matte tin-plated leads solderable per J-STD-002. Its unidirectional configuration requires correct cathode orientation relative to protected circuit polarity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1.0 mA test current - defines precise avalanche onset window for reliable triggering |
| VWM | 58.1 V - maximum continuous reverse voltage before leakage exceeds 1.0 µA; sets safe operating margin below VBR |
| VC @ IPPM | 92.0 V at 16.3 A - clamping voltage during 1500 W transient; determines protected IC's voltage stress limit |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform; validates surge immunity per IEC 61000-4-5 |
| IFSM | 200 A - non-repetitive forward surge rating (8.3 ms half-sine); supports inrush or fault-current tolerance |
| TJ max. | +150 °C - maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial settings |
| RθJA | 75 °C/W - thermal resistance junction-to-ambient on standard 8.0 mm × 8.0 mm copper pads; informs PCB thermal design |
Pinout & Package
Package: SMC (DO-214AB) - surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0 flammability; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point | Connected to protected line; conducts avalanche current toward ground when transient exceeds VWM |
| Anode (non-banded end) | Cathode-side connection point | Typically tied to system ground or low-impedance return path; completes shunt conduction path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC specification |
| 1500 W peak pulse power | Withstands severe transients such as ISO 7637-2 Pulse 5a (load dump) without degradation |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter consistency across temperature and life cycles |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; compatible with high-volume automated assembly |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage overshoot during fast transients, protecting downstream 75 V-rated MOSFETs or controllers |
Applications
| Automotive Sensor Protection | Industrial DC Power Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and inductive switching spikes in 12 V vehicle systems. IC Role / Device Role: Unidirectional shunt TVS placed between signal line and chassis ground to clamp transients before they reach sensitive input pins. Use Value: Clamps to 92.0 V within nanoseconds, preserving signal integrity and preventing latch-up or gate oxide damage in AEC-Q100 qualified ICs. |
Use Scenario: Safeguarding 24 V industrial PLC I/O modules and motor drive control boards against lightning-induced surges and relay coil flyback. IC Role / Device Role: Primary overvoltage clamp on DC input rail upstream of DC-DC converters and microcontrollers. Use Value: Absorbs 1500 W pulses without failure, maintaining system uptime and eliminating need for redundant fusing or complex crowbar circuits. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from ESD and induced surges on twisted-pair data lines in outdoor telecom cabinets. IC Role / Device Role: Secondary-level TVS on isolated data lines, coordinated with primary gas discharge tube (GDT) protection. Use Value: Low capacitance (<50 pF typical) avoids signal integrity loss at 100 Mbps; fast response complements slower GDTs. |
Use Scenario: Adding robust overvoltage protection to the 5–20 V output stage of wall-mounted AC/DC adapters used in smart home hubs and IoT gateways. IC Role / Device Role: Final-stage clamp preventing output overvoltage from damaging connected USB-C or battery management ICs. Use Value: 58.1 V VWM provides ample margin above 20 V nominal output while enabling tight 92.0 V clamping ceiling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A-E3/52 | Lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 85 °C/W), same VWM/VBR range | Better suited for space-constrained consumer PCBs where 1500 W surge is not required | Select when board area is critical and surge threat level is moderate (e.g., IEC 61000-4-2 only) |
| 1.5KE68A-T | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 qualification or MSL Level 1 rating | Applicable in legacy industrial equipment where reflow compatibility and automotive qualification are not mandated | Choose for cost-sensitive, non-automotive designs requiring proven reliability without SMT process constraints |
Compared with 1.5SMC68AHE3/57T, SMBJ64A-E3/52 trades surge capacity for compactness, while 1.5KE68A-T sacrifices AEC-Q101 compliance and SMT readiness for through-hole ease - making 1.5SMC68AHE3/57T the optimal choice for new automotive and high-reliability SMT designs demanding full qualification and 1500 W immunity.
Availability
1.5SMC68AHE3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC power inputs, telecom line interfaces, and consumer power adapter outputs requiring stable component supply, AEC-Q101 validation, and consistent 1500 W surge performance.
Supply support for 1.5SMC68AHE3/57T 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, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, 1500 W pulse handling, and SMT manufacturability are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC68AHE3/57T under maximum rated surge current?
The 1.5SMC68AHE3/57T exhibits a maximum clamping voltage (VC) of 92.0 V when subjected to its rated peak pulse current of 16.3 A (10/1000 µs waveform). This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88303) and defines the upper voltage limit imposed on the protected circuit during transient events.
Is the 1.5SMC68AHE3/57T qualified for automotive use?
Yes, the 1.5SMC68AHE3/57T carries AEC-Q101 qualification, confirmed by its "HE3" suffix and documentation in the Vishay 1.5SMC Series datasheet. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD, making the 1.5SMC68AHE3/57T suitable for under-hood and body-control module applications.
What does the "HE3/57T" suffix indicate in 1.5SMC68AHE3/57T?
The "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification; "57T" specifies packaging in a 7-inch diameter plastic tape-and-reel format containing 850 units. This ordering code aligns with Vishay's standardized nomenclature for automotive-grade SMC-packaged TVS diodes, ensuring traceability and process compatibility.
How does the thermal performance of the 1.5SMC68AHE3/57T affect PCB layout?
The 1.5SMC68AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain TJ ≤ 150 °C under worst-case power dissipation, designers must allocate adequate copper area and avoid excessive trace length - especially critical in automotive engine bay or industrial enclosure applications.
Can the 1.5SMC68AHE3/57T be used in bidirectional configurations?
No - the 1.5SMC68AHE3/57T is strictly unidirectional, as indicated by its "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the 1.5SMC68CA variant (with "CA" suffix), which provides symmetrical clamping in both polarities and no polarity marking. Using 1.5SMC68AHE3/57T in reverse-biased mode risks permanent damage due to forward conduction.
1.5SMC68AHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 16.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC68AHE3/57T FAQ
1.How can I place an order for 1.5SMC68AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68AHE3/57T 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 1.5SMC68AHE3/57T reliable?
The price and inventory of 1.5SMC68AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC68AHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC68AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68AHE3/57T?
1.5SMC68AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68AHE3/57T 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 1.5SMC68AHE3/57T?
For technical support, including 1.5SMC68AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68AHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC68AHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68AHE3/57T 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 1.5SMC68AHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC68AHE3/57T?
All 1.5SMC68AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68AHE3/57T, 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 1.5SMC68AHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC68AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC68AHE3/57T Tags
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