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Vishay General Semiconductor - Diodes Division 1.5SMC68AHE3_A/H
- Part No.:
- 1.5SMC68AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68AHE3_A/H.pdf
- Description:
- TVS DIODE 58.1VWM 92VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,331
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Product details
Overview
1.5SMC68AHE3_A/H 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 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 rating with 10/1000 μs waveform - deployed in automotive ECUs, industrial sensor interfaces, and DC power rails.
For engineers reviewing the 1.5SMC68AHE3_A/H datasheet, 1.5SMC68AHE3_A/H pinout, 1.5SMC68AHE3_A/H application, or 1.5SMC68AHE3_A/H equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, fast response time (<1 ns), and SMC (DO-214AB) surface-mount packaging optimized for automated placement and high-reliability environments.
Technical Context
The 1.5SMC68AHE3_A/H operates as a unidirectional avalanche diode, clamping transients above its reverse stand-off voltage (58.1 V) by entering avalanche breakdown. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 μA at VWM), while thermal resistance (RθJA = 75 °C/W) supports operation up to 150 °C junction temperature.
It is rated for 1500 W peak pulse power (10/1000 μs), 16.3 A peak pulse current (IPPM), and 200 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine). The device meets MSL Level 1 per J-STD-020 and is RoHS-compliant with matte tin-plated leads solderable per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at IT = 1.0 mA - defines precise avalanche onset range for reliable clamping threshold |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 92.0 V at 16.3 A - clamped voltage during 10/1000 μs transient, limiting downstream stress |
| PPPM | 1500 W - peak transient energy absorption capability under standardized surge waveform |
| IFSM | 200 A - surge current handling for 8.3 ms half-sine, critical for inductive load switching events |
| Junction Temp | -65 °C to +150 °C - enables deployment in under-hood automotive and industrial ambient conditions |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal management |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; polarity indicated by cathode band on unidirectional devices; compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 12 V supply or CAN_H); band-marked end for orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge events without degradation |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes voltage overshoot during clamping, protecting downstream MOSFETs and ICs |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage across temperature and life cycle |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed control modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 58.1 V. Use Value: Limits clamped voltage to 92.0 V during 16.3 A transients, preventing damage to MCU power supplies and CAN transceivers. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA loops) and digital sensor interfaces (I²C, SPI) from ESD and cable discharge. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt fast transients (<1 ns response) before reaching precision front-end circuitry. Use Value: Sub-1.0 μA leakage at 58.1 V avoids signal offset errors; low capacitance preserves signal integrity up to 1 MHz. |
| DC-DC Converter Input Protection | Telecom Power Interface Protection |
Use Scenario: Shielding buck converter inputs from voltage spikes caused by upstream switching or hot-plug events. IC Role / Device Role / Timing Role: Placed upstream of input filter capacitor to absorb energy before it reaches switching FETs and controller ICs. Use Value: 1500 W rating handles repetitive 10/1000 μs surges; thermal resistance (75 °C/W) enables stable operation at 50 °C ambient. |
Use Scenario: Guarding PoE-powered equipment (e.g., IP cameras, access points) against lightning-induced surges on Ethernet pairs. IC Role / Device Role / Timing Role: Used in conjunction with common-mode chokes and gas discharge tubes to provide secondary-level differential-mode clamping. Use Value: 92.0 V clamping voltage aligns with IEEE 802.3af/at insulation requirements; AEC-Q101 qualification supports extended field life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ68A-E3/57T | Same VWM (58.1 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a (load dump) | Select when board space is constrained and surge energy is ≤400 W; verify thermal margin at full load. |
| 1.5KE68A | Through-hole DO-201 package, identical electrical specs (VBR, VC, PPPM), no AEC-Q101 qualification | Not qualified for automotive use; requires wave soldering or hand assembly | Choose for cost-sensitive industrial prototypes where AEC-Q101 is not mandated and through-hole assembly is acceptable. |
Compared with SMAJ68A-E3/57T and 1.5KE68A, the 1.5SMC68AHE3_A/H uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and SMC surface-mount compatibility - making it the preferred choice for production automotive and high-reliability industrial designs requiring validated long-term performance.
Availability
1.5SMC68AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interface modules, and telecom power interface circuits requiring stable component supply, AEC-Q101 compliance, and repeatable surge immunity performance.
Supply support for 1.5SMC68AHE3_A/H 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, efficiency, and application-specific optimization.
The 1.5SMC Series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where robustness against lightning, ESD, and inductive switching surges is mission-critical.
FAQ
What is the clamping voltage of the 1.5SMC68AHE3_A/H under a 10/1000 μs surge?
The 1.5SMC68AHE3_A/H has a maximum clamping voltage (VC) of 92.0 V at 16.3 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured per Fig. 1 and Fig. 3 in Vishay document 88303 and reflects worst-case clamping performance at TA = 25 °C with recommended PCB pad layout (8.0 mm × 8.0 mm copper).
Is the 1.5SMC68AHE3_A/H qualified for automotive applications?
Yes, the 1.5SMC68AHE3_A/H is AEC-Q101 qualified, as confirmed by its "HE3" suffix and documentation in Vishay's 1.5SMC Series datasheet (Rev. 09-Mar-2026, Doc. #88303). It undergoes stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 requirements for discrete semiconductors.
What does the "_A/H" suffix mean in 1.5SMC68AHE3_A/H?
The "_A/H" suffix in 1.5SMC68AHE3_A/H indicates AEC-Q101 qualification ('A') and packaging in 7-inch diameter plastic tape and reel ('H'), containing 850 units per reel. This ordering code aligns with Vishay's documented format in the "Ordering Information" section of document 88303.
How does the 1.5SMC68AHE3_A/H compare to bidirectional TVS diodes like 1.5SMC68CA?
The 1.5SMC68AHE3_A/H is unidirectional and intended for DC line protection with polarity-sensitive placement (cathode toward protected line), whereas 1.5SMC68CA is bidirectional and suitable for AC or differential signal lines. Their VBR, VWM, and VC values differ: 1.5SMC68CA has symmetric breakdown (±64.6 V) and higher VWM (58.1 V per direction), but same PPPM (1500 W).
What is the maximum operating temperature for the 1.5SMC68AHE3_A/H?
The 1.5SMC68AHE3_A/H has a specified operating junction and storage temperature range of -65 °C to +150 °C. Its thermal resistance (RθJA = 75 °C/W) allows sustained operation at 150 °C junction temperature when mounted on the recommended 8.0 mm × 8.0 mm copper pads, making it suitable for under-hood automotive and high-ambient industrial environments.
1.5SMC68AHE3_A/H 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:
- Active
- 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_A/H FAQ
1.How can I place an order for 1.5SMC68AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68AHE3_A/H 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_A/H reliable?
The price and inventory of 1.5SMC68AHE3_A/H 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_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC68AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68AHE3_A/H?
1.5SMC68AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68AHE3_A/H 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_A/H?
For technical support, including 1.5SMC68AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68AHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC68AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68AHE3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC68AHE3_A/H?
All 1.5SMC68AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68AHE3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC68AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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