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Vishay General Semiconductor - Diodes Division SMCG64CAHE3/9AT
- Part No.:
- SMCG64CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG64CAHE3/9AT.pdf
- Description:
- TVS DIODE 64VWM 103VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,000
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Product details
Overview
SMCG64CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for high-energy surge protection on signal and power lines. 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 (10/1000 µs), clamping voltage of 103 V at 14.6 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMCG64CAHE3/9AT datasheet, SMCG64CAHE3/9AT pinout, SMCG64CAHE3/9AT application, or SMCG64CAHE3/9AT equivalent, key selection criteria include bidirectional clamping behavior, low clamping ratio (VC/VBR ≈ 1.37), MSL Level 1 moisture sensitivity, RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche junction to limit voltage across protected circuitry. Its bidirectional symmetry ensures identical clamping in both polarities, eliminating polarity concerns in AC-coupled or differential lines like CAN FD or Ethernet PHY interfaces.
The SMCG64CAHE3/9AT uses glass-passivated silicon die in a low-profile surface-mount package with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation up to TJ = +150 °C. It meets UL 497B recognition (QVGQ2) and is rated for non-repetitive 10/1000 µs surges per ANSI/IEEE C62.35.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe signal swing margin in protected line. |
| VBR (min/max) | 71.1 V / 78.6 V at IT = 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on under surge conditions. |
| VC @ IPPM | 103 V at 14.6 A - Clamped voltage during 1500 W 10/1000 µs surge; determines maximum stress on downstream ICs. |
| PPPM | 1500 W - Peak surge energy handling capability; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) compliance when properly laid out. |
| ID @ VWM | 1.0 µA - Reverse leakage at stand-off voltage; negligible loading on high-impedance sensor or communication lines. |
| TJ max. | +150 °C - Maximum junction temperature; enables deployment in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, and ESD testing; suitable for ADAS and body control modules. |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount, gull-wing leaded case with 0.220–0.245 inch (5.59–6.22 mm) body length, 0.115–0.125 inch (2.92–3.17 mm) width, and 0.024–0.040 inch (0.61–1.02 mm) lead thickness. Matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional configuration | No polarity marking; symmetric terminals enable placement without orientation check-reduces SMT programming overhead. |
| Cathode | Current exit point in forward bias; common terminal in bidirectional configuration | Identical physical structure to Anode; bidirectional operation eliminates need for cathode band identification during assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled lines (e.g., RS-485, CAN, audio) without external polarity management or dual-diode arrangements. |
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control units and infotainment power rails where thermal cycling and vibration endurance are critical. |
| MSL Level 1 (260 °C peak) | Allows standard reflow profiles without baking; eliminates pre-conditioning steps and reduces production floor handling complexity. |
| Glass-passivated junction | Provides stable VBR over lifetime and improved resistance to humidity-induced parameter drift compared to epoxy-passivated alternatives. |
| UL 497B recognition (QVGQ2) | Confirms suitability for telecom and industrial surge protection systems requiring third-party safety certification for primary-side protectors. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
|
Use Scenario: Protecting ABS wheel speed sensors exposed to load dump and inductive switching noise in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential sensor output pins to clamp ±100 V transients without distorting low-amplitude analog signals. Use Value: Prevents latch-up or gate oxide damage in downstream op-amps and ADCs while maintaining <1.0 µA leakage at 64 V nominal rail. |
Use Scenario: Shielding CAN FD transceivers (e.g., TJA1057) from ESD and ISO 7637-2 pulse 1/2/5a surges in factory automation nodes. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) bidirectional clamp on CANH/CANL lines to preserve signal integrity up to 5 Mbps. Use Value: Achieves <103 V clamping at 14.6 A surge current, limiting transceiver stress below its 120 V absolute maximum rating. |
| Telecom Line Card Surge Suppression | Power Supply Input Transient Protection |
|
Use Scenario: Secondary-side protection on POTS line interface cards subjected to lightning-induced surges per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after isolation transformer to absorb residual common-mode energy before SLIC or codec inputs. Use Value: 1500 W PPPM rating supports multi-event surge testing; UL 497B recognition satisfies telecom safety agency requirements. |
Use Scenario: Input-stage clamping on 64 V DC industrial power supplies feeding PLC I/O modules vulnerable to back-EMF from solenoid loads. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) avalanche device shunting >1 kV spikes before they reach bulk capacitors or controller ICs. Use Value: 75 °C/W RθJA allows direct PCB copper pad heatsinking; no additional thermal vias required for 6.5 W steady-state dissipation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/57T | Unidirectional; same VWM/VBR/PPPM but lacks bidirectional symmetry and AEC-Q101 qualification. | Requires polarity-aware layout; unsuitable for AC or differential lines without external circuitry. | Select only if protecting unidirectional DC rails where polarity is fixed and automotive qualification is not required. |
| SMCJ64CA | Same bidirectional function and VWM, but in larger DO-214AB (SMC) package; higher RθJA (100 °C/W) and no AEC-Q101 listing. | Needs more PCB area; thermal performance limits sustained surge duty cycle in compact enclosures. | Use when legacy board space permits larger footprint and automotive qualification is not mandated. |
Compared with SMAJ64A-E3/57T and SMCJ64CA, the SMCG64CAHE3/9AT delivers verified bidirectional clamping in a smaller DO-215AB footprint, AEC-Q101 validation for automotive use, and lower thermal resistance-making it optimal for space-constrained, high-reliability differential-line protection.
Availability
SMCG64CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN FD networks, telecom line cards, and 64 V DC power supply inputs requiring stable component supply and long-term lifecycle support.
Supply support for SMCG64CAHE3/9AT 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, efficiency, and application-specific optimization.
The SMCG series targets high-power transient suppression in automotive, industrial, and telecom systems where compact size, AEC-Q101 compliance, and bidirectional symmetry are mandatory design requirements.
FAQ
What is the clamping voltage of SMCG64CAHE3/9AT at its rated peak pulse current?
The SMCG64CAHE3/9AT has a maximum clamping voltage (VC) of 103 V when subjected to its rated peak pulse current (IPPM) of 14.6 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for downstream components in the SMCG64CAHE3/9AT protection path.
Is SMCG64CAHE3/9AT suitable for automotive applications?
Yes, the SMCG64CAHE3/9AT is AEC-Q101 qualified and explicitly listed in Vishay's mechanical and qualification data as meeting automotive reliability standards-including HTOL, temperature cycling, and ESD testing. Its DO-215AB package, matte tin terminations, and -55 °C to +150 °C operating range make SMCG64CAHE3/9AT appropriate for engine control, ADAS sensor, and body electronics modules.
Does SMCG64CAHE3/9AT have polarity markings on the package?
No, the SMCG64CAHE3/9AT is a bidirectional TVS diode and carries no cathode band or polarity marking. Both terminals are functionally identical, allowing unrestricted orientation during automated placement-a key advantage over unidirectional variants like SMCG64AHE3/9AT, where correct band alignment is mandatory for proper operation.
What is the maximum steady-state power dissipation for SMCG64CAHE3/9AT?
The SMCG64CAHE3/9AT has a maximum power dissipation (PD) of 6.5 W at TA = 50 °C on an infinite heatsink. In real-world PCB layouts using the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, derating applies above 25 °C ambient per Figure 2 in the Vishay datasheet-ensuring thermal stability for continuous operation within the SMCG64CAHE3/9AT specification limits.
How does the SMCG64CAHE3/9AT differ from SMCG64AHE3/9AT?
The SMCG64CAHE3/9AT is bidirectional, while SMCG64AHE3/9AT is unidirectional. This means SMCG64CAHE3/9AT clamps voltage symmetrically in both directions-ideal for AC, differential, or floating lines-whereas SMCG64AHE3/9AT only protects against reverse-polarity surges and requires correct cathode orientation. Both share identical VWM (64 V), PPPM (1500 W), and AEC-Q101 qualification, but only SMCG64CAHE3/9AT supports polarity-agnostic placement.
SMCG64CAHE3/9AT 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG64CAHE3/9AT FAQ
1.How can I place an order for SMCG64CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG64CAHE3/9AT 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 SMCG64CAHE3/9AT reliable?
The price and inventory of SMCG64CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG64CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG64CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG64CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG64CAHE3/9AT?
SMCG64CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG64CAHE3/9AT 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 SMCG64CAHE3/9AT?
For technical support, including SMCG64CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG64CAHE3/9AT requirements.
6.How does Aetrix verify that SMCG64CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG64CAHE3/9AT 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 SMCG64CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG64CAHE3/9AT?
All SMCG64CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG64CAHE3/9AT, 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 SMCG64CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG64CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG64CAHE3/9AT Tags
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