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Vishay General Semiconductor - Diodes Division SMCG64CA-E3/9AT
- Part No.:
- SMCG64CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG64CA-E3/9AT.pdf
- Description:
- TVS DIODE 64VWM 103VC DO215AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMCG64CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), clamping voltage of 103 V at 14.6 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMCG64CA-E3/9AT datasheet, SMCG64CA-E3/9AT pinout, SMCG64CA-E3/9AT application, or SMCG64CA-E3/9AT equivalent, this device is selected for high-energy surge suppression in automotive power lines, industrial sensor interfaces, and telecom signal conditioning where bidirectional clamping, low clamping ratio, and MSL Level 1 reflow compatibility are critical.
Technical Context
The SMCG64CA-E3/9AT operates as a bidirectional avalanche diode, symmetrically clamping voltage transients in both polarities without polarity marking. Its glass-passivated junction ensures stable VBR and low leakage (<1.0 µA at VWM), while its DO-215AB package delivers thermal resistance of 75 °C/W (junction-to-ambient) and supports 260 °C peak reflow per J-STD-020.
It complies with ANSI/IEEE C62.35 for surge testing, uses a 10/1000 µs waveform for PPPM rating, and is rated for -55 °C to +150 °C operating junction temperature. The device is not a voltage regulator or rectifier - it functions exclusively as a passive, fast-response (sub-nanosecond) transient clamp.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - maximum continuous reverse voltage before clamping begins; defines safe operating window for protected circuitry |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - guaranteed avalanche onset range; ensures predictable turn-on under ESD/EFT stress |
| VC @ IPPM | 103 V at 14.6 A - clamped voltage during 1500 W surge; determines worst-case stress on downstream ICs |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform; enables protection against IEC 61000-4-5 Level 4 surges |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage at stand-off; prevents signal distortion or bias shift in high-impedance nodes |
| TJ max. | +150 °C - extended junction temperature rating supports under-hood automotive placement and industrial ambient conditions |
| AEC-Q101 | Qualified - validated for automotive reliability including HTOL, TC, UHAST, and ESD-HBM/MM; suitable for ASIL-B systems |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount gull-wing package with matte tin-plated leads, 8.0 mm × 8.0 mm copper pad layout recommended, MSL Level 1, RoHS-compliant (E3 suffix), 0.211 g unit weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Acts as cathode during positive transients and anode during negative transients; no polarity marking required |
| Cathode | Transient current exit (bidirectional) | Symmetric terminal; identical electrical behavior to Anode; bidirectional operation confirmed per datasheet note "Electrical characteristics apply in both directions" |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4 kV open-circuit / 2 kA short-circuit without degradation |
| Glass-passivated junction | Ensures long-term VBR stability and low parameter drift across temperature and lifetime stress |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-defect reliability |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow without pre-baking; eliminates moisture-related popcorning risk |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed at input filter stage to clamp ±100 V spikes within 1 ns. Use Value: Limits voltage seen by downstream DC/DC converters and microcontrollers to ≤103 V, preventing latch-up or gate oxide damage. | Use Scenario: Shielding 4–20 mA current loop transmitters from field-induced surges in factory automation. IC Role / Device Role / Timing Role: Transient shunt connected across loop terminals to divert >1 kA surge energy away from precision op-amps and ADCs. Use Value: Maintains loop integrity during lightning-induced transients by clamping within 103 V while adding <1.0 µA leakage at 64 V nominal. |
| Telecom Signal Line Protection | Consumer USB Port ESD Suppression |
Use Scenario: Safeguarding RS-485 transceivers in base station backhaul links exposed to induced surges. IC Role / Device Role / Timing Role: Bidirectional clamp on differential pair to suppress common-mode transients up to 1500 W without distorting data eye. Use Value: Preserves signal integrity with <1.0 pF junction capacitance (typ.) and sub-ns response, meeting TIA-485-A timing margins. | Use Scenario: Hardening USB 2.0 D+/D− lines against contact ESD per IEC 61000-4-2 ±15 kV. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to connector to absorb HBM events before reaching PHY. Use Value: Provides 1500 W surge margin beyond ESD requirements while maintaining USB full-speed signal rise time via minimal parasitic loading. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64CA-E3/57T | Same VWM/VBR/PPPM specs but in SMA (DO-214AC) package; RθJA = 85 °C/W vs. 75 °C/W; lower power density | Less effective in high-temperature PCB zones due to higher thermal resistance; unsuitable for dense automotive layouts | Select only if legacy SMA footprint reuse is mandatory and thermal derating can be accommodated |
| TPSMD64CA | 1500 W PPPM, same VWM, but TO-277 package; 3-pin configuration with center tab for enhanced heatsinking; RθJA ≈ 50 °C/W | Requires different layout and mounting; better for >100 kHz repetitive surge environments | Prefer when sustained surge duty cycle exceeds 0.1% or board space allows larger footprint |
Compared with SMAJ64CA-E3/57T and TPSMD64CA, the SMCG64CA-E3/9AT offers superior thermal performance in compact layouts and native AEC-Q101 qualification - making it optimal for new automotive and high-reliability industrial designs where DO-215AB's gull-wing geometry enables automated optical inspection and fine-pitch routing.
Availability
SMCG64CA-E3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface, and telecom line protection requiring stable component supply, AEC-Q101 compliance, and 13″ tape-and-reel delivery for SMT production.
Supply support for SMCG64CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and automotive-grade qualification.
The SMCG series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power, bidirectional transient suppression in harsh environments - targeting automotive, industrial, and infrastructure applications demanding AEC-Q101 validation and MSL Level 1 process compatibility.
FAQ
What is the clamping voltage of the SMCG64CA-E3/9AT and how is it measured?
The SMCG64CA-E3/9AT has a maximum clamping voltage (VC) of 103 V, measured at a peak pulse current (IPPM) of 14.6 A using a 10/1000 µs waveform per ANSI/IEEE C62.35. This value represents the worst-case voltage imposed on protected circuitry during a standardized surge event and is verified per the Vishay datasheet revision 09-Jan-2024, Document Number 88457. The SMCG64CA-E3/9AT maintains this clamping performance across its full operating temperature range.
Is the SMCG64CA-E3/9AT suitable for automotive applications?
Yes, the SMCG64CA-E3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its construction includes glass-passivated junctions, MSL Level 1 reflow compatibility, and operation from -55 °C to +150 °C junction temperature. The SMCG64CA-E3/9AT meets requirements for ECUs, body control modules, and ADAS sensors where bidirectional surge immunity and zero-defect reliability are mandated.
Does the SMCG64CA-E3/9AT have polarity markings?
No, the SMCG64CA-E3/9AT does not have polarity markings because it is a bidirectional TVS diode. As stated in the Vishay datasheet, "no marking on bidirectional types" and "electrical characteristics apply in both directions." This symmetry eliminates orientation concerns during automated placement and simplifies design for AC-coupled or floating circuits - a key distinction from unidirectional variants like SMCG64A.
What is the thermal resistance of the SMCG64CA-E3/9AT and how does it affect layout?
The SMCG64CA-E3/9AT 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 assumes the recommended pad layout shown in Figure 6 of the datasheet. To maintain reliability under repeated surges, designers must allocate sufficient copper area and avoid thermal bottlenecks - undersized pads increase junction temperature and reduce PPPM derating per Figure 2. The SMCG64CA-E3/9AT's RθJA is 10 °C/W lower than SMAJ64CA-E3/57T, enabling tighter thermal margins.
How does the SMCG64CA-E3/9AT differ from the unidirectional SMCG64A?
The SMCG64CA-E3/9AT is bidirectional with symmetrical clamping in both polarities and no cathode band marking, whereas SMCG64A is unidirectional with a cathode band and forward conduction capability (VF = 3.5 V at 100 A). Their VWM (64 V), VBR (71.1–78.6 V), and PPPM (1500 W) are identical, but SMCG64A supports forward surge current (IFSM = 200 A) - a feature irrelevant for SMCG64CA-E3/9AT. Use SMCG64CA-E3/9AT for AC signals or floating rails; use SMCG64A only where DC polarity is fixed and forward conduction may occur.
SMCG64CA-E3/9AT 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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- 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)
SMCG64CA-E3/9AT FAQ
1.How can I place an order for SMCG64CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG64CA-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 SMCG64CA-E3/9AT reliable?
The price and inventory of SMCG64CA-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 SMCG64CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG64CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG64CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG64CA-E3/9AT?
SMCG64CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG64CA-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 SMCG64CA-E3/9AT?
For technical support, including SMCG64CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG64CA-E3/9AT requirements.
6.How does Aetrix verify that SMCG64CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG64CA-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 SMCG64CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG64CA-E3/9AT?
All SMCG64CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG64CA-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 SMCG64CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG64CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG64CA-E3/9AT Tags
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