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Vishay General Semiconductor - Diodes Division 1.5SMC15AHE3/57T
- Part No.:
- 1.5SMC15AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15AHE3/57T.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,538
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Product details
Overview
1.5SMC15AHE3/57T 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 15 V standoff voltage (VWM), 21.2 V clamping voltage at 70.8 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive ECUs, industrial sensor interfaces, and DC power rails.
For engineers reviewing the 1.5SMC15AHE3/57T datasheet, 1.5SMC15AHE3/57T pinout, 1.5SMC15AHE3/57T application, or 1.5SMC15AHE3/57T equivalent, key selection criteria include clamping performance under repetitive surge conditions, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to deliver fast response (<1 ps) and low incremental surge resistance. Its breakdown voltage is specified at 14.3–15.8 V (min/max) with 1 mA test current, ensuring precise triggering near system operating voltage.
Designed for surface-mount use in the SMC (DO-214AB) package, it supports 200 A non-repetitive forward surge current (8.3 ms half-sine) and maintains stable operation across -65 °C to +150 °C junction temperature range - critical for under-hood automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12.8 V - maximum reverse working voltage before leakage exceeds 1 μA; defines safe continuous operating limit for 12 V nominal systems |
| VBR (min/max) | 14.3 V / 15.8 V at 1 mA - ensures reliable turn-on above normal rail voltage while avoiding false triggering |
| VC @ IPPM | 21.2 V at 70.8 A - clamping voltage during 10/1000 μs surge; limits downstream IC stress to <22 V |
| PPPM | 1500 W - peak pulse power handling per JEDEC standard; supports high-energy transients from load switching or ESD |
| RθJA | 75 °C/W - thermal resistance from junction to ambient on standard 8 mm × 8 mm copper pads; enables thermal design without forced cooling |
| IFSM | 200 A - peak forward surge current rating (8.3 ms half-sine); validates robustness against inrush and fault currents |
| TJ max | +150 °C - maximum junction temperature; supports operation in high-ambient environments like engine compartments |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail; conducts during forward surge events |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V supply); initiates avalanche breakdown when VLINE > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces |
| 1500 W peak pulse power (10/1000 μs) | Withstands high-energy transients from relay coil de-energization, motor commutation, and ISO 7637-2 Pulse 1/2a/5a |
| Glass passivated junction | Ensures long-term reliability and stable VBR drift < ±5 % over lifetime under thermal cycling |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage overshoot during suppression - critical for protecting 15 V-tolerant CAN transceivers and microcontrollers |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp surges up to 35 V. Use Value: Limits voltage seen by downstream PMICs and MCUs to ≤21.2 V, preventing latch-up or gate oxide damage. |
Use Scenario: Shielding 4–20 mA analog sensor outputs from field-induced transients in factory automation. IC Role / Device Role / Timing Role: TVS mounted across signal and return lines to absorb induced common-mode spikes. Use Value: Maintains signal integrity below 21.2 V clamping threshold, preserving ADC accuracy and isolator input thresholds. |
| DC-DC Converter Input Protection | Automotive CAN Bus Node Protection |
Use Scenario: Safeguarding buck converter inputs against back-EMF from solenoid drivers in ADAS modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VIN rail upstream of controller IC. Use Value: Absorbs 1500 W pulses without degradation, enabling compact layout with no external heat sinking required. |
Use Scenario: Secondary protection for CANH/CANL lines in junction boxes exposed to cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS on each line referenced to ground, complementing integrated bus transceiver protection. Use Value: Clamps transients to 21.2 V within nanoseconds - preserves CAN bit timing and prevents dominant-state corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A-E3/52 | Lower peak power (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for load dump or ISO 7637-2 Pulse 5a | Select when board space is constrained and surge energy remains below 600 W |
| 1.5KE15A | Through-hole DO-201 package, identical electrical specs but incompatible with SMT assembly | Requires manual or wave soldering; not viable for high-volume automated production | Choose only for legacy through-hole designs or prototyping where rework tolerance is prioritized |
Compared with SMBJ15A-E3/52 and 1.5KE15A, the 1.5SMC15AHE3/57T uniquely delivers 1500 W SMT-compatible surge protection with AEC-Q101 qualification - making it the only option among the three validated for automotive power rail deployment without layout or process compromise.
Availability
1.5SMC15AHE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning, and DC-DC converter input stages requiring stable component supply, AEC-Q101 compliance, and high-reliability transient suppression.
Supply support for 1.5SMC15AHE3/57T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The 1.5SMC Series was developed specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness, repeatability, and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC15AHE3/57T under maximum surge conditions?
The 1.5SMC15AHE3/57T clamps to 21.2 V at its rated peak pulse current of 70.8 A using the industry-standard 10/1000 μs waveform. This value is measured under defined test conditions (TA = 25 °C, mounted on 8 mm × 8 mm copper pads) and represents the maximum voltage imposed on protected circuitry during worst-case transient events - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC15AHE3/57T qualified for automotive applications?
Yes, the 1.5SMC15AHE3/57T carries AEC-Q101 qualification, confirmed by its HE3 suffix and explicit listing in Vishay's AEC-Q101-compliant product documentation. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and surge robustness - validating its use in engine control modules, body controllers, and other automotive subsystems where reliability under vibration and thermal extremes is essential.
What does the "HE3/57T" suffix indicate in 1.5SMC15AHE3/57T?
The "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification, while "57T" specifies packaging in 7-inch plastic tape-and-reel format with 850 units per reel. This ordering code ensures traceability, consistent solderability (matte tin plating), and compatibility with high-speed pick-and-place equipment - distinguishing it from commercial-grade E3 variants or alternate reel sizes like 9AT.
How does the 1.5SMC15AHE3/57T compare to bidirectional TVS diodes in circuit design?
The 1.5SMC15AHE3/57T is unidirectional and must be oriented with cathode toward the protected line - unlike bidirectional types (e.g., 1.5SMC15CA), which suppress surges regardless of polarity. This makes the 1.5SMC15AHE3/57T ideal for DC rails where polarity is fixed, offering tighter VBR tolerance and lower leakage than equivalent bidirectional parts, but requiring correct PCB placement to avoid reverse-bias failure.
What is the thermal resistance and maximum junction temperature of the 1.5SMC15AHE3/57T?
The 1.5SMC15AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 8 mm × 8 mm copper pads, and a maximum junction temperature (TJ) of +150 °C. These values enable reliable operation in sealed enclosures or high-ambient environments - such as under-hood automotive locations - without active cooling, provided power dissipation remains within derated limits per Vishay's Fig. 2.
1.5SMC15AHE3/57T 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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 70.8A
- 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)
1.5SMC15AHE3/57T FAQ
1.How can I place an order for 1.5SMC15AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15AHE3/57T 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 1.5SMC15AHE3/57T reliable?
The price and inventory of 1.5SMC15AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC15AHE3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC15AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15AHE3/57T?
1.5SMC15AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15AHE3/57T 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 1.5SMC15AHE3/57T?
For technical support, including 1.5SMC15AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15AHE3/57T requirements.
6.How does Aetrix verify that 1.5SMC15AHE3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15AHE3/57T 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 1.5SMC15AHE3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC15AHE3/57T?
All 1.5SMC15AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15AHE3/57T, 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 1.5SMC15AHE3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC15AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15AHE3/57T Tags
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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