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Vishay General Semiconductor - Diodes Division SM15T7V5CA-E3/9AT
- Part No.:
- SM15T7V5CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T7V5CA-E3/9AT.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,013
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Product details
Overview
SM15T7V5CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 7.13–7.88 V breakdown voltage at 10 mA, and 11.3 V maximum clamping voltage at 132 A peak pulse current. It protects signal lines in automotive sensor units and industrial I/O interfaces against lightning-induced and inductive-switching transients.
For engineers reviewing the SM15T7V5CA-E3/9AT datasheet, SM15T7V5CA-E3/9AT pinout, SM15T7V5CA-E3/9AT application, or SM15T7V5CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.48), AEC-Q101 qualification eligibility, and compatibility with high-source-impedance transient paths requiring short-circuit failure mode.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR min/max (7.13 V / 7.88 V), ID ≤ 500 μA at 6.40 V stand-off, and VC = 11.3 V under 132 A IPPM (10/1000 μs). Its glass-passivated junction ensures stable leakage and robust surge handling.
Designed for surface-mount placement on 8.0 mm × 8.0 mm copper pads, it achieves RθJA = 75 °C/W and supports TJ up to +150 °C. The device meets MSL Level 1 (260 °C reflow) and qualifies for automotive use when ordered with HE3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V at IT = 10 mA - defines reliable conduction onset in both directions |
| VWM | 6.40 V - maximum continuous reverse voltage before significant leakage begins |
| VC @ IPPM | 11.3 V at 132 A (10/1000 μs) - clamping voltage limiting downstream IC stress during surge |
| PPPM | 1500 W (10/1000 μs) - energy-handling capacity for lightning and inductive load transients |
| ID @ VWM | ≤ 500 μA - low leakage preserves signal integrity in high-impedance sensor lines |
| TJ max. | +150 °C - enables operation in under-hood automotive and industrial ambient environments |
| Package | SMC (DO-214AB) - industry-standard SMT outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
SM15T7V5CA-E3/9AT uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, UL 94 V-0 rating, and no polarity marking (bidirectional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts during negative surges; symmetrical with cathode in bidirectional operation |
| Cathode | Transient current entry (positive half-cycle) | Conducts during positive surges; functionally identical to anode due to CA suffix design |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse power | Handles lightning-induced surges (IEC 61000-4-5 Level 4) on external I/O traces |
| Low clamping ratio (VC/VBR ≈ 1.48) | Minimizes overvoltage exposure to protected ICs such as CAN transceivers or ADC front-ends |
| MSL Level 1 moisture sensitivity | Permits standard SMT reflow without baking, reducing manufacturing overhead |
| AEC-Q101 qualification path | Supports automotive-grade sourcing via HE3/HM3 ordering codes for safety-critical modules |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., temperature, pressure) in engine control modules from load-dump and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and ECU input, absorbing transients before they reach precision amplifiers or ADCs. Use Value: Prevents latch-up or permanent damage to 5 V rail-connected microcontrollers by limiting voltage to ≤11.3 V during 100 A surges. | Use Scenario: Shielding RS-485 or 24 V digital I/O lines in PLC backplanes from motor drive noise and relay contact bounce. IC Role / Device Role / Timing Role: Standoff protector across differential pair or supply-to-ground, activated only during >6.4 V excursions. Use Value: Maintains signal fidelity with <500 μA leakage at 6.4 V while surviving repeated 1500 W pulses per IEC 61000-4-4. |
| Telecom Line Interface | Consumer Device USB/UART Lines |
Use Scenario: Safeguarding Ethernet PHY or DSL line drivers connected to unshielded outdoor cabling susceptible to induced lightning surges. IC Role / Device Role / Timing Role: First-stage transient absorber before secondary filtering, shunting surge current to ground via low-inductance layout. Use Value: Achieves <1 ns response time and clamps 10/1000 μs transients to 11.3 V, preserving PHY integrity without adding capacitance to data paths. | Use Scenario: Adding robustness to USB 2.0 D+/D− or UART TX/RX lines in smart home hubs exposed to ESD and cable coupling events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp (typ. CJ < 500 pF at 0 V) placed adjacent to connector. Use Value: Limits ESD strikes (IEC 61000-4-2 ±15 kV) to safe levels while introducing negligible signal distortion on 480 Mbps USB traffic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5CA | 600 W PPPM, same VBR range but lower surge rating; SMB package (smaller footprint, higher RθJA) | Limited to lower-energy threats (e.g., board-level ESD); not suitable for lightning-survivable designs | Select when space-constrained layouts preclude SMC and threat level is ≤600 W |
| 1.5KE7.5CA | 1500 W PPPM, axial DO-201AD package; higher mounting inductance and manual assembly requirement | Used in legacy through-hole systems; incompatible with automated SMT lines | Choose only for repair/refurbish of existing through-hole designs requiring drop-in voltage match |
Compared with SMBJ7.5CA and 1.5KE7.5CA, SM15T7V5CA-E3/9AT delivers identical bidirectional clamping performance at 1500 W in an RoHS-compliant SMC package optimized for high-volume SMT, enabling superior thermal dissipation and automated placement yield without sacrificing surge margin.
Availability
SM15T7V5CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface circuits requiring stable component supply and long-term production continuity.
Supply support for SM15T7V5CA-E3/9AT 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 and AEC-Q qualification.
The SM15T Series targets high-energy transient suppression in harsh environments, designed specifically for automotive, industrial, and telecom applications where failure modes must be predictable (short-circuit) and surge immunity must exceed IEC 61000-4-5 Level 4.
FAQ
What does the "CA" suffix indicate in SM15T7V5CA-E3/9AT?
The "CA" suffix denotes a bidirectional configuration: SM15T7V5CA-E3/9AT conducts symmetrically in both polarities, making it suitable for AC signal lines, differential buses, or floating nodes where polarity reversal may occur. Unlike unidirectional "A" variants, it has no cathode marking and identical VBR/VWM specifications in either direction. This behavior is confirmed in the Electrical Characteristics table on page 2 of Vishay document 88380.
Is SM15T7V5CA-E3/9AT qualified for automotive applications?
SM15T7V5CA-E3/9AT itself is RoHS-compliant commercial grade (E3 suffix); however, the SM15T7V5CA family supports AEC-Q101 qualification via the HE3 ordering code (e.g., SM15T7V5CAHE3_A/I). The base SM15T7V5CA-E3/9AT shares identical die and construction-only the test documentation and traceability differ. Automotive programs should specify the HE3 variant for formal qualification compliance.
What is the maximum clamping voltage of SM15T7V5CA-E3/9AT under standard test conditions?
The maximum clamping voltage (VC) of SM15T7V5CA-E3/9AT is 11.3 V when subjected to a 10/1000 μs waveform at its rated peak pulse current of 132 A. This value is measured per Figure 1 and Table on page 2 of Vishay document 88380 and reflects worst-case voltage seen by protected circuitry during surge events.
How does the SMC package of SM15T7V5CA-E3/9AT compare thermally to smaller packages like SMB?
SM15T7V5CA-E3/9AT in SMC (DO-214AB) offers RθJA = 75 °C/W (vs. ~100–120 °C/W for SMB), enabling higher sustained power dissipation. Its larger copper pad area (8.0 mm × 8.0 mm per terminal) improves heat spreading, supporting longer surge durations and higher ambient temperatures-critical for under-hood automotive use where SMB variants would thermally saturate.
Can SM15T7V5CA-E3/9AT replace older P6KE7.5CA devices in existing designs?
SM15T7V5CA-E3/9AT is not a direct pin-compatible replacement for P6KE7.5CA due to differing packages (SMC vs. DO-15) and mounting requirements. While electrical parameters (VBR, VC, PPPM) align closely, the SMC footprint requires PCB layout revision. For drop-in replacement, consider SMAJ7.5CA (SMA package) or verify mechanical fit and thermal relief in the target assembly before substitution.
SM15T7V5CA-E3/9AT 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-E3/9AT FAQ
1.How can I place an order for SM15T7V5CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T7V5CA-E3/9AT 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-E3/9AT reliable?
The price and inventory of SM15T7V5CA-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T7V5CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SM15T7V5CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T7V5CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T7V5CA-E3/9AT?
SM15T7V5CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T7V5CA-E3/9AT 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-E3/9AT?
For technical support, including SM15T7V5CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T7V5CA-E3/9AT requirements.
6.How does Aetrix verify that SM15T7V5CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SM15T7V5CA-E3/9AT 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-E3/9AT meets industry standards.
7.What is the process for return or replacement of SM15T7V5CA-E3/9AT?
All SM15T7V5CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SM15T7V5CA-E3/9AT, 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-E3/9AT part is unused and in its original packaging.
Return procedure for SM15T7V5CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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