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Vishay General Semiconductor - Diodes Division 1.5SMC15A-E3/57T
- Part No.:
- 1.5SMC15A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15A-E3/57T.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:1,557
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Product details
Overview
1.5SMC15A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 15 V breakdown voltage (VBR min/max: 14.3–15.8 V at 1.0 mA), 12.8 V stand-off voltage (VWM), 21.2 V clamping voltage (VC) at 70.8 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC15A-E3/57T datasheet, 1.5SMC15A-E3/57T pinout, 1.5SMC15A-E3/57T application, or 1.5SMC15A-E3/57T equivalent, key selection criteria include unidirectional polarity, SMC (DO-214AB) package compatibility, clamping performance under 10/1000 µs transients, and AEC-Q101 qualification eligibility via HE3 suffix variants.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 12.8 V, it transitions from high-impedance blocking to low-impedance conduction, limiting transient energy to safe levels at VC = 21.2 V. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM).
Designed for automated SMT assembly, it meets J-STD-020 MSL Level 1 (260 °C peak reflow), has matte tin-plated leads, and delivers 200 A non-repetitive forward surge capability (8.3 ms half-sine). Thermal resistance is RθJA = 75 °C/W on standard 8.0 mm × 8.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 14.3 V / 15.8 V at 1.0 mA - defines precise breakdown onset for reliable triggering above normal operating voltage |
| VWM | 12.8 V - maximum continuous reverse working voltage before leakage rises significantly |
| VC @ IPPM | 21.2 V at 70.8 A - clamping voltage during 1500 W 10/1000 µs transient, directly limits stress on downstream ICs |
| PPPM | 1500 W - peak pulse power handling capacity per standardized lightning/inductive-switching surge test |
| IFSM | 200 A - single half-sine surge current rating (8.3 ms), supports high-energy fault events without failure |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive and industrial environments |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return plane; completes clamping loop during overvoltage events |
| Cathode | Reverse-biased terminal / protected line connection | Connected to the line being protected (e.g., CAN_H, 12 V rail); conducts when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without derating in standard layouts |
| Low clamping ratio (VC/VBR ≈ 1.41) | Minimizes voltage overshoot during clamping, reducing risk of latch-up or damage to 15 V-tolerant receivers |
| MSL Level 1 moisture sensitivity | Eliminates bake requirements prior to reflow, supporting direct placement in high-volume SMT lines |
| AEC-Q101 qualification path | HE3/HM3 variants available - enables use in automotive powertrain and body electronics with full reliability validation |
| Glass passivated junction | Ensures stable VBR over temperature and lifetime, critical for long-term field reliability in harsh environments |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceiver pins and analog sensor supply lines (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role: Unidirectional shunt clamp placed between protected line and chassis ground. Use Value: Limits transient voltage to ≤21.2 V, preventing damage to 24 V-rated transceivers and maintaining signal integrity during 100 V/50 ms load dump events. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers exposed to relay coil flyback and ESD. IC Role / Device Role: Primary overvoltage clamp on field-side input terminals before optocoupler isolation stage. Use Value: Absorbs 1500 W surges while holding clamped voltage below 24 V system tolerance, eliminating need for additional series impedance or filtering. |
| Consumer Power Adapter Output Protection | Telecom Line Card Surge Suppression |
|
Use Scenario: Secondary-side overvoltage suppression on 12–15 V SMPS outputs powering USB-C PD controllers or display logic. IC Role / Device Role: Final-stage TVS parallel to output capacitor, triggered only during abnormal regulation loss or feedback fault. Use Value: Clamps output to 21.2 V within nanoseconds, preventing catastrophic failure of downstream 15 V-rated PMICs and interface ICs. |
Use Scenario: Front-end protection on telecom line cards handling T1/E1 signals or PoE-powered Ethernet ports. IC Role / Device Role: First-line defense against lightning-induced common-mode surges coupled onto twisted-pair cables. Use Value: Withstands repetitive 10/1000 µs transients up to 1500 W, meeting GR-1089-CORE Level 3 requirements for central office equipment. |
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 PPPM (600 W), same VBR/VC, SMB (DO-214AA) package - 30% smaller footprint, lower thermal mass | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump or industrial motor switching | Select when board space is constrained and surge energy is ≤600 W; verify thermal derating on small pads |
| 1.5KE15A | Through-hole TO-204AE (DO-41) package, identical electrical specs but higher RθJA (~100 °C/W), no MSL rating | Requires wave soldering; not suitable for mixed-technology or fully SMT production; lacks reflow compatibility | Choose only for legacy through-hole designs or prototyping where SMT infrastructure is unavailable |
Compared with SMBJ15A-E3/52 and 1.5KE15A, the 1.5SMC15A-E3/57T delivers optimal balance of high-energy clamping (1500 W), SMT manufacturability (MSL-1), and thermal performance (RθJA = 75 °C/W), making it preferred for volume automotive and industrial applications requiring AEC-Q101 scalability.
Availability
1.5SMC15A-E3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC inputs, and telecom line card protection requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC15A-E3/57T 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for high-power, surface-mount transient suppression in harsh environments - emphasizing robust clamping, AEC-Q101 readiness, and automated assembly compatibility.
FAQ
What is the clamping voltage of the 1.5SMC15A-E3/57T under a 10/1000 µs surge?
The 1.5SMC15A-E3/57T clamps to a maximum of 21.2 V when subjected to its rated peak pulse current of 70.8 A, corresponding to a 1500 W 10/1000 µs transient. This value is measured per Figure 1 in Vishay document 88303 and represents the upper limit of voltage seen by downstream circuitry during worst-case surge conditions. The 1.5SMC15A-E3/57T maintains this clamping performance across its specified operating temperature range.
Is the 1.5SMC15A-E3/57T RoHS-compliant and halogen-free?
Yes, the 1.5SMC15A-E3/57T carries the "E3" suffix, indicating full RoHS compliance per EU Directive 2011/65/EU and exemption 7a. It is not halogen-free; for halogen-free and RoHS-compliant versions, specify the "M3" suffix (e.g., 1.5SMC15A-M3/57T). Both E3 and M3 variants meet JESD201 Class 2 whisker resistance requirements.
Does the 1.5SMC15A-E3/57T have AEC-Q101 qualification?
The base 1.5SMC15A-E3/57T is commercial-grade and not AEC-Q101 qualified. However, Vishay offers AEC-Q101-qualified variants under the HE3 (RoHS-compliant) and HM3 (halogen-free + RoHS) suffixes - for example, 1.5SMC15AHE3_A/H. These qualified versions undergo extended stress testing including HTOL, TC, and UHAST to meet automotive reliability standards.
What is the maximum reverse leakage current for the 1.5SMC15A-E3/57T at its stand-off voltage?
At VWM = 12.8 V and TA = 25 °C, the 1.5SMC15A-E3/57T exhibits a maximum reverse leakage current (ID) of 1.0 µA. This low leakage ensures minimal power loss in standby mode and avoids false triggering in high-impedance sensing circuits. Leakage remains below 5.0 µA up to +85 °C per Vishay's characterization data.
Can the 1.5SMC15A-E3/57T be used in bidirectional configurations?
No - the 1.5SMC15A-E3/57T is strictly unidirectional, as indicated by the "A" suffix and cathode band marking. For bidirectional operation, select the "CA" variant (e.g., 1.5SMC15CA-E3/57T), which provides symmetrical clamping in both polarities and omits the polarity marking. Using the unidirectional 1.5SMC15A-E3/57T in AC or floating applications risks forward conduction and failure.
1.5SMC15A-E3/57T 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC15A-E3/57T FAQ
1.How can I place an order for 1.5SMC15A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15A-E3/57T 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 1.5SMC15A-E3/57T reliable?
The price and inventory of 1.5SMC15A-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC15A-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC15A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15A-E3/57T?
1.5SMC15A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15A-E3/57T 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 1.5SMC15A-E3/57T?
For technical support, including 1.5SMC15A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15A-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC15A-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15A-E3/57T 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 1.5SMC15A-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC15A-E3/57T?
All 1.5SMC15A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15A-E3/57T, 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 1.5SMC15A-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC15A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15A-E3/57T Tags
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