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Vishay General Semiconductor - Diodes Division 1.5SMC15CA-E3/57T
- Part No.:
- 1.5SMC15CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15CA-E3/57T.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,818
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Product details
Overview
1.5SMC15CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 15 V standoff voltage (VWM), 16.7 V minimum breakdown voltage (VBR), 21.2 V maximum clamping voltage at 70.8 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and operates across -65 °C to +150 °C junction temperature range - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC15CA-E3/57T datasheet, 1.5SMC15CA-E3/57T pinout, 1.5SMC15CA-E3/57T application, or 1.5SMC15CA-E3/57T equivalent, key selection criteria include bidirectional clamping performance under 10/1000 µs transients, thermal resistance (RθJA = 75 °C/W), RoHS-compliant SMC (DO-214AB) packaging, and AEC-Q101 qualification eligibility via HE3 suffix variants.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction to achieve fast response time (<1 ps) and low incremental surge resistance, enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients. Its symmetrical I-V characteristic ensures identical clamping behavior in both polarities, with no polarity marking required on the device body.
The 1.5SMC15CA-E3/57T is rated for 1500 W peak pulse power under standardized 10/1000 µs waveform conditions at 0.01% duty cycle, with derating applied above 25 °C ambient per Figure 2. Thermal performance relies on recommended 8.0 mm × 8.0 mm copper pad layout per terminal to maintain RθJL = 15 °C/W and sustain repetitive surge capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 12.8 V - Maximum continuous reverse working voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown, min) | 14.3 V at 1.0 mA test current - Guaranteed conduction onset voltage; ensures reliable triggering during transient events. |
| VC (Clamping, max) | 21.2 V at 70.8 A IPPM - Peak voltage seen by protected circuit during worst-case 10/1000 µs surge; critical for downstream IC survivability. |
| PPPM | 1500 W - Peak pulse power handling capacity under standard waveform; determines energy absorption capability without failure. |
| ID (Leakage, max) | 1.0 µA at VWM - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance nodes. |
| TJ Range | -65 °C to +150 °C - Wide operational junction temperature range supports under-hood automotive and industrial environments. |
| Package | SMC (DO-214AB) - Surface-mount package with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated pick-and-place. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C reflow peak), J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional configuration | No polarity marking; symmetric terminals enable identical clamping in either direction - simplifies PCB layout and eliminates orientation errors. |
| Cathode | Current exit point in forward bias; common terminal in bidirectional configuration | Same physical terminal as Anode; bidirectional operation means both ends function identically - no cathode band or marking present. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware placement in AC-coupled or floating signal paths. |
| 1500 W peak pulse power | Withstands high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without degradation when mounted on specified 8.0 mm × 8.0 mm copper pads. |
| Glass-passivated junction | Enhances reliability and stability of breakdown characteristics over temperature and lifetime versus epoxy-passivated alternatives. |
| AEC-Q101 qualification path | HE3/HM3 variants available - enables direct use in automotive ECUs, ADAS sensors, and infotainment systems requiring qualified components. |
| Low thermal resistance | RθJL = 15 °C/W - Enables efficient heat transfer to PCB copper, supporting sustained surge repetition in thermally constrained layouts. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle subsystems. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector interface to shunt transients before reaching sensitive front-end circuitry. Use Value: Clamps 10/1000 µs surges to ≤21.2 V while maintaining <1 µA leakage at 12.8 V - preserving signal fidelity and preventing latch-up in 3.3 V/5 V microcontrollers. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against induced surges from relay coil switching and motor drive noise. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on 24 V DC input lines, absorbing repetitive 1500 W pulses without parameter drift. Use Value: Withstands 0.01% duty cycle surges at full rating and operates reliably from -65 °C to +150 °C - ensuring uptime in uncontrolled factory environments. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from lightning-induced surges on twisted-pair data lines in outdoor access points. IC Role / Device Role / Timing Role: First-stage protection device placed before common-mode chokes and secondary TVS arrays to reduce energy burden on downstream stages. Use Value: Symmetric clamping limits differential-mode transients to <21.2 V peak while exhibiting <0.1% capacitance change - preserving 100BASE-TX signal integrity. |
Use Scenario: Secondary-side overvoltage suppression on 12 V/19 V DC outputs of wall adapters and laptop chargers exposed to mains-borne transients. IC Role / Device Role / Timing Role: Final-line defense against output short-circuit recovery spikes and external coupling events before connected devices. Use Value: 1500 W rating handles EN 61000-4-5 Level 4 surges; RoHS-compliant SMC package supports high-volume automated assembly with zero lead-free reflow defects. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Lower PPPM (600 W), same VWM/VC, SMB (DO-214AA) package - 30% smaller footprint but higher RθJA (110 °C/W). | Preferred where board space is constrained and surge energy is limited to ≤600 W (e.g., USB port protection). | Select SMBJ15CA only if peak transient energy is confirmed ≤600 W and thermal management allows higher junction temperature rise. |
| 1.5KE15CA | Higher VC (24.4 V), through-hole DO-201AE package, same 1500 W rating - lacks SMT compatibility and AEC-Q101 path. | Suitable for legacy through-hole designs or prototyping where manual assembly is acceptable and RoHS compliance is not mandated. | Choose 1.5KE15CA only for non-automated, cost-sensitive, or non-automotive applications where SMT placement is unavailable. |
Compared with SMBJ15CA and 1.5KE15CA, the 1.5SMC15CA-E3/57T delivers optimal balance of high-energy surge handling (1500 W), SMT manufacturability, and automotive qualification readiness - making it the preferred choice for new designs targeting production scalability and harsh-environment reliability.
Availability
1.5SMC15CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter outputs requiring stable component supply, RoHS compliance, and consistent SMC (DO-214AB) form factor.
Supply support for 1.5SMC15CA-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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1.5SMC Series is engineered specifically for high-power transient suppression in demanding environments - delivering consistent clamping performance, low leakage, and robust thermal behavior across automotive, industrial, and telecom applications.
FAQ
What is the clamping voltage of the 1.5SMC15CA-E3/57T at its rated peak pulse current?
The 1.5SMC15CA-E3/57T has a maximum clamping voltage (VC) of 21.2 V at its rated peak pulse current (IPPM) of 70.8 A under the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and reflects worst-case voltage imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC15CA-E3/57T suitable for automotive applications?
The 1.5SMC15CA-E3/57T itself is RoHS-compliant and commercial-grade; however, Vishay offers AEC-Q101-qualified versions under HE3 and HM3 suffixes (e.g., 1.5SMC15CAHE3_A). For automotive use, engineers must specify those qualified variants - the 1.5SMC15CA-E3/57T provides the same electrical and mechanical specs but lacks formal automotive qualification documentation.
What is the standoff voltage (VWM) and why is it important for the 1.5SMC15CA-E3/57T?
The 1.5SMC15CA-E3/57T has a standoff voltage (VWM) of 12.8 V, representing the maximum continuous reverse voltage it can block without significant leakage (<1.0 µA). This parameter ensures the device remains non-conductive during normal operation - preserving signal integrity and minimizing power loss - while still triggering reliably when transients exceed the breakdown threshold.
Does the 1.5SMC15CA-E3/57T have polarity markings, and how is it oriented on the PCB?
No - the 1.5SMC15CA-E3/57T is a bidirectional TVS diode and carries no polarity marking (no cathode band). Both terminals are functionally identical, allowing unrestricted orientation during placement. This eliminates assembly errors and simplifies layout for AC-coupled or floating circuits where voltage polarity reverses dynamically.
What thermal derating applies to the 1.5SMC15CA-E3/57T above 25 °C ambient temperature?
The 1.5SMC15CA-E3/57T requires linear derating of its peak pulse power (PPPM) above 25 °C ambient, per Figure 2 in the Vishay datasheet (Document Number: 88303). At 75 °C ambient, PPPM drops to approximately 75% of 1500 W (i.e., ~1125 W); at 125 °C, it falls to ~35% (~525 W). Proper copper pad layout (8.0 mm × 8.0 mm per terminal) is mandatory to achieve published thermal resistance values.
1.5SMC15CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
1.5SMC15CA-E3/57T FAQ
1.How can I place an order for 1.5SMC15CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15CA-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 1.5SMC15CA-E3/57T reliable?
The price and inventory of 1.5SMC15CA-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 1.5SMC15CA-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC15CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15CA-E3/57T?
1.5SMC15CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15CA-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 1.5SMC15CA-E3/57T?
For technical support, including 1.5SMC15CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15CA-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC15CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15CA-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 1.5SMC15CA-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC15CA-E3/57T?
All 1.5SMC15CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15CA-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 1.5SMC15CA-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC15CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15CA-E3/57T Tags
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