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Vishay General Semiconductor - Diodes Division SMCG7.5CA-E3/57T
- Part No.:
- SMCG7.5CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG7.5CA-E3/57T.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,257
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Product details
Overview
SMCG7.5CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount TransZORB® transient voltage suppressor in DO-215AB (SMCG) package, with 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and 116.3 A peak pulse current (IPPM) under 10/1000 µs waveform. It protects signal lines and power rails in automotive sensor units and industrial control interfaces against ESD and inductive switching transients.
For engineers reviewing the SMCG7.5CA-E3/57T datasheet, SMCG7.5CA-E3/57T pinout, SMCG7.5CA-E3/57T application, or SMCG7.5CA-E3/57T equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, clamping behavior at rated surge, thermal resistance (RθJA = 75 °C/W), and bidirectional polarity configuration - all critical for robust overvoltage protection design in space-constrained PCB layouts.
Technical Context
This device operates as a bidirectional avalanche diode, symmetrically clamping voltage surges above ±8.33 V in either direction while maintaining ≤7.5 V reverse stand-off. Its glass-passivated junction ensures stable breakdown and low leakage (<100 µA at VWM), and its MSL Level 1 rating supports lead-free reflow up to 260 °C.
Designed for unclamped transient suppression per IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT), it delivers 12.9 V clamping voltage (VC) at 116.3 A IPPM, with low incremental surge resistance and fast response time <1 ns - enabling protection of sensitive analog inputs and CAN/LIN bus receivers without signal distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before conduction begins; defines safe signal rail margin. |
| VBR min/max | 8.33 V / 9.21 V at 1.0 mA IT - Confirmed breakdown threshold range; ensures predictable turn-on across production lot. |
| VC @ IPPM | 12.9 V at 116.3 A (10/1000 µs) - Clamped voltage during worst-case surge; determines protected circuit's maximum stress level. |
| PPPM | 1500 W - Peak transient energy handling capacity; validates suitability for ISO 7637-2 Pulse 1/2a/5a automotive load dump events. |
| ID @ VWM | ≤100 µA - Reverse leakage at stand-off; low enough to avoid loading high-impedance sensor outputs or reference nodes. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and sealed industrial enclosures. |
| RθJA | 75 °C/W - Thermal resistance junction-to-ambient on 8 mm × 8 mm copper pads; informs derating requirements for sustained surge duty cycles. |
Pinout & Package
Package: DO-215AB (SMCG) - surface-mount gull-wing outline, 0.310" × 0.400" footprint, matte tin-plated leads, RoHS-compliant (E3), AEC-Q101 qualified, MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking; terminals are functionally identical - enables placement without orientation check on automated SMT lines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS sensor, and body electronics. |
| Glass-passivated junction | Stable VBR over lifetime and temperature; eliminates parameter drift due to moisture ingress or metallization migration in humid environments. |
| Low-profile DO-215AB package | Height ≤0.058" (1.47 mm); fits beneath low-clearance shields and enables dense routing in compact ECUs and IoT edge nodes. |
| MSL Level 1 rating | Supports standard Pb-free reflow profiles up to 260 °C peak without baking - reduces manufacturing overhead and avoids moisture-induced popcorning. |
| 1500 W peak pulse power | Handles repetitive 10/1000 µs transients up to 116.3 A without degradation - sufficient for 12 V/24 V system-level surge immunity per ISO 16750-2. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog pressure sensor outputs in engine bay modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point, shunting transients before they reach ASIC input pins. Use Value: Maintains signal integrity below 12.9 V clamp during 116.3 A surges, preventing latch-up or permanent damage to 5 V tolerant sensor interface ICs. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) backplanes subject to relay coil flyback and field wiring faults. IC Role / Device Role / Timing Role: Standoff protector across input terminals, activated only during >8.33 V transients to avoid DC loading of optocoupler bias networks. Use Value: Enables direct connection to 24 V field wiring without series resistors or RC filters, reducing BOM count and board area. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Suppression |
Use Scenario: Input-stage protection for USB-C PD adapters and wireless charging controllers where ESD and hot-plug spikes threaten primary-side controllers. IC Role / Device Role / Timing Role: First-line transient absorber between AC/DC rectifier output and PWM controller VDD pin. Use Value: Clamps 1500 W surges within 1 ns, limiting voltage overshoot to 12.9 V and preserving gate driver functionality during repeated plug/unplug events. |
Use Scenario: Secondary-side protection on Ethernet PHY power rails and RS-485 transceiver VCC lines in telecom base station line cards. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) bidirectional clamp isolating high-speed data paths from bulk power rail disturbances. Use Value: Adds <100 µA leakage at 7.5 V while delivering 12.9 V clamping - prevents false triggering and maintains signal eye diagram integrity. |
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 | Same VWM (7.5 V) and bidirectional configuration, but lower PPPM (400 W) and higher VC (12.0 V at 32.4 A). | Limited to lower-energy transients (e.g., IEC 61000-4-2 ±8 kV contact discharge only); unsuitable for ISO 7637-2 Pulse 5a. | Select SMAJ7.5CA only when board space allows larger SMA package and surge energy is strictly limited to <400 W. |
| 1.5KE7.5CA | Through-hole DO-201 package, same VWM and bidirectional operation, but higher VC (12.9 V at 113 A) and identical PPPM (1500 W). | Requires through-hole assembly and larger PCB real estate; not suitable for fully SMT production or AEC-Q101 automotive use. | Choose 1.5KE7.5CA only for legacy through-hole designs or prototyping where reflow compatibility and automotive qualification are not required. |
Compared with SMAJ7.5CA and 1.5KE7.5CA, SMCG7.5CA-E3/57T uniquely combines AEC-Q101 qualification, DO-215AB surface-mount geometry, and full 1500 W surge capability - making it the only option qualified for volume automotive SMT production requiring both high reliability and high energy absorption in minimal footprint.
Availability
SMCG7.5CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O terminals, consumer power adapter front-ends, and telecom line card protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCG7.5CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific performance.
The SMCG series targets high-reliability transient suppression in automotive and industrial systems, designed specifically to meet AEC-Q101 stress requirements while enabling compact, automated SMT assembly of robust overvoltage protection circuits.
FAQ
What is the clamping voltage of SMCG7.5CA-E3/57T at its rated peak pulse current?
The SMCG7.5CA-E3/57T has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current (IPPM) of 116.3 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for downstream ICs protected by SMCG7.5CA-E3/57T.
Is SMCG7.5CA-E3/57T qualified for automotive applications?
Yes, SMCG7.5CA-E3/57T is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number: 88457, Revision: 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, confirming its suitability for under-hood and chassis-mounted automotive electronics where SMCG7.5CA-E3/57T is deployed.
Does SMCG7.5CA-E3/57T have polarity markings on the package?
No, SMCG7.5CA-E3/57T does not have polarity markings because it is a bidirectional TVS diode. The device functions identically in both directions, with no anode or cathode designation - a key feature confirmed in the "Polarity" section of the Vishay datasheet, which states "no marking on bidirectional types" for SMCG7.5CA-E3/57T and other CA-suffix variants.
What is the thermal resistance of SMCG7.5CA-E3/57T, and how does it affect layout?
The SMCG7.5CA-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value directly informs PCB copper area requirements: reducing pad size increases RθJA, risking thermal runaway during repetitive surges - so SMCG7.5CA-E3/57T must be laid out per Vishay's recommended mounting pad dimensions to maintain safe TJ.
Can SMCG7.5CA-E3/57T replace unidirectional TVS diodes like SMCG7.5A-E3/57T in existing designs?
No - SMCG7.5CA-E3/57T is bidirectional and lacks polarity marking, whereas SMCG7.5A-E3/57T is unidirectional with cathode band identification. Substituting SMCG7.5CA-E3/57T for SMCG7.5A-E3/57T may cause unintended conduction in DC-biased circuits. The datasheet confirms separate electrical tables and polarity definitions, so SMCG7.5CA-E3/57T must only be used where bidirectional clamping is explicitly required and validated in the target application.
SMCG7.5CA-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 116.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG7.5CA-E3/57T FAQ
1.How can I place an order for SMCG7.5CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG7.5CA-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 SMCG7.5CA-E3/57T reliable?
The price and inventory of SMCG7.5CA-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 SMCG7.5CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG7.5CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG7.5CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG7.5CA-E3/57T?
SMCG7.5CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG7.5CA-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 SMCG7.5CA-E3/57T?
For technical support, including SMCG7.5CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG7.5CA-E3/57T requirements.
6.How does Aetrix verify that SMCG7.5CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG7.5CA-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 SMCG7.5CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG7.5CA-E3/57T?
All SMCG7.5CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG7.5CA-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 SMCG7.5CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCG7.5CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG7.5CA-E3/57T Tags
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