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Vishay General Semiconductor - Diodes Division SM15T7V5CA-E3/57T
- Part No.:
- SM15T7V5CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T7V5CA-E3/57T.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,645
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Product details
Overview
SM15T7V5CA-E3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on signal and power lines. It features 7.13 V minimum breakdown voltage (VBR), 5.8 V stand-off voltage (VWM), 11.3 V maximum clamping voltage (VC) at 132 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 μs waveform - used to protect automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the SM15T7V5CA-E3/57T datasheet, SM15T7V5CA-E3/57T pinout, SM15T7V5CA-E3/57T application, or SM15T7V5CA-E3/57T equivalent, key selection criteria include bidirectional clamping behavior, low clamping ratio (VC/VWM = 1.95), AEC-Q101 qualification eligibility, and compatibility with automated SMT assembly on 8 mm × 8 mm copper pads.
Technical Context
The SM15T7V5CA-E3/57T operates as a silicon avalanche diode with symmetrical bidirectional conduction, enabling protection of AC-coupled or differential signal paths without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<500 μA at VWM).
It delivers 1500 W transient suppression per 10/1000 μs waveform under standardized mounting conditions, with thermal resistance RθJA = 75 °C/W and maximum junction temperature of 150 °C. Failure mode under overstress is short circuit, consistent with IEC 61000-4-5 Level 4 compliance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.8 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected line. |
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA - Ensures predictable turn-on across production lot; tight 10.5% tolerance supports robust design margining. |
| VC @ IPPM | 11.3 V at 132 A - Clamping voltage during 10/1000 μs surge; limits downstream IC stress to <11.3 V during worst-case transients. |
| PPPM | 1500 W - Peak pulse power handling capability; enables protection against lightning-induced surges per IEC 61000-4-5. |
| IPPM | 132 A - Peak pulse current supported with 10/1000 μs waveform; determines minimum source impedance required for safe operation. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood automotive environments and industrial enclosures. |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient; informs PCB copper pad sizing (minimum 8 mm × 8 mm per terminal) for thermal reliability. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional device with no polarity marking. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); matte tin-plated leads, RoHS-compliant, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point in negative half-cycle | Provides symmetrical conduction path during bidirectional surges; connects to protected line without polarity constraint. |
| Cathode | Transient current entry point in positive half-cycle | Enables clamping in both directions; terminals are electrically identical - no cathode band marking on CA-suffix devices. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) in properly impedance-matched systems. |
| Low clamping voltage (11.3 V @ 132 A) | Reduces voltage overshoot on protected ICs such as CAN transceivers or microcontroller GPIOs during fast transients. |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<500 μA) over temperature and lifetime. |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free reflow soldering without moisture sensitivity concerns or baking requirements. |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications requiring validated reliability per stress test standard. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and temperature/pressure sensor outputs from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between sensor signal line and ground, absorbing ±1 kV ESD and 4 kV lightning surges. Use Value: Prevents latch-up or permanent damage to 5 V rail-tied op-amps and ADC front-ends by limiting transient voltage to ≤11.3 V. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring surges and relay coil kickback. IC Role / Device Role / Timing Role: High-power transient suppressor mounted at connector entry point, shunting surge energy before reaching precision current-to-voltage converter. Use Value: Maintains analog measurement integrity by clamping transients within 10/1000 μs window while sustaining 1500 W peak dissipation without degradation. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Control Board |
Use Scenario: Shielding Ethernet PHY interface and PoE detection circuitry from induced surges on outdoor cabling in network switches and base stations. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pairs (e.g., TX+/TX−) to suppress common-mode transients without distorting signal integrity. Use Value: Achieves <1 pF junction capacitance (typ.) at zero bias, minimizing signal attenuation and jitter on 100BASE-TX links. |
Use Scenario: Protecting microcontroller reset lines and optocoupler inputs on washing machine motor drive boards subject to brush-commutator noise and relay bounce. IC Role / Device Role / Timing Role: Low-inductance SMC-packaged TVS installed adjacent to MCU pins to minimize loop area and maximize clamping speed. Use Value: Limits transient rise time impact via low package inductance, ensuring sub-100 ns response to 1 kV/μs fast edges from brushed motor commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5CA | Lower peak power (400 W), smaller SMA package, higher VC/VWM ratio (2.2), same VBR range | Suitable only for lower-energy threats (IEC 61000-4-2 ESD, not lightning-level surges) | Select when board space is constrained and surge threat level is limited to ±8 kV contact ESD. |
| SMCJ7.5CA | Same SMC package, 1500 W rating, but wider VBR tolerance (6.45–7.88 V vs. SM15T7V5CA's 7.13–7.88 V), higher VC (12.0 V) | Acceptable for general-purpose industrial I/O where tighter clamping is not critical | Choose when cost optimization is prioritized and 0.7 V higher clamping voltage is acceptable for protected ICs. |
Compared with SMAJ7.5CA and SMCJ7.5CA, the SM15T7V5CA-E3/57T offers the tightest VBR tolerance in the SMC 1500 W class and lowest clamping voltage (11.3 V), making it preferred for protecting sensitive 5 V logic and automotive sensors where voltage margin is minimal.
Availability
SM15T7V5CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and telecom line card designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM15T7V5CA-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 SM15T Series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where failure modes must be controlled and clamping performance tightly specified.
FAQ
What is the polarity configuration of SM15T7V5CA-E3/57T?
The SM15T7V5CA-E3/57T is a bidirectional TVS diode with no polarity marking - unlike unidirectional variants (suffix "A"), it has no cathode band and conducts symmetrically in both directions. This makes it ideal for protecting AC-coupled lines, differential buses like CAN or RS-485, and any signal path where voltage polarity reversal may occur during transients.
Does SM15T7V5CA-E3/57T meet AEC-Q101 requirements?
The base SM15T7V5CA-E3/57T is RoHS-compliant and commercial grade; however, Vishay offers AEC-Q101 qualified versions under ordering codes SM15T7V5CAHE3_A/H or SM15T7V5CAHM3_A/H. These variants undergo stress testing per AEC-Q101 and are marked with HE3 or HM3 suffixes - the SM15T7V5CA-E3/57T itself is not AEC-Q101 qualified unless ordered with HE3/HM3 suffix.
What is the recommended PCB pad layout for SM15T7V5CA-E3/57T?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area per terminal for SM15T7V5CA-E3/57T to achieve rated 1500 W pulse power and thermal performance. Smaller pads reduce heat dissipation and cause premature thermal runaway during repetitive surges. The pad layout must also maintain ≥0.76 mm creepage/clearance for reinforced insulation in industrial applications.
How does SM15T7V5CA-E3/57T compare to unidirectional SM15T7V5A-E3/57T in circuit implementation?
The SM15T7V5CA-E3/57T replaces two unidirectional TVS diodes back-to-back and eliminates polarity dependency, simplifying layout and reducing BOM count. Unlike the unidirectional SM15T7V5A-E3/57T (which requires correct cathode orientation), the CA version installs without orientation checks - critical for automated assembly of differential or AC signal paths where polarity is undefined.
What is the maximum junction temperature and thermal resistance of SM15T7V5CA-E3/57T?
The SM15T7V5CA-E3/57T has a maximum junction temperature (TJ) of +150 °C and typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8 mm × 8 mm copper pads. This means at 6.5 W steady-state dissipation, junction temperature rises ~488 °C above ambient - confirming that the device is intended for transient-only duty, not continuous power dissipation.
SM15T7V5CA-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 132A
- 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)
SM15T7V5CA-E3/57T FAQ
1.How can I place an order for SM15T7V5CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T7V5CA-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 SM15T7V5CA-E3/57T reliable?
The price and inventory of SM15T7V5CA-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 SM15T7V5CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SM15T7V5CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T7V5CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T7V5CA-E3/57T?
SM15T7V5CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T7V5CA-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 SM15T7V5CA-E3/57T?
For technical support, including SM15T7V5CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T7V5CA-E3/57T requirements.
6.How does Aetrix verify that SM15T7V5CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SM15T7V5CA-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 SM15T7V5CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SM15T7V5CA-E3/57T?
All SM15T7V5CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SM15T7V5CA-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 SM15T7V5CA-E3/57T part is unused and in its original packaging.
Return procedure for SM15T7V5CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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