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Vishay General Semiconductor - Diodes Division SMCG54CA-E3/9AT
- Part No.:
- SMCG54CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG54CA-E3/9AT.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,898
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Product details
Overview
SMCG54CA-E3/9AT from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, designed for robust overvoltage protection of sensitive electronics. It features a 54 V stand-off voltage (VWM), 60.0–66.3 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), clamping voltage of 87.1 V at 17.2 A, and AEC-Q101 qualification for automotive reliability.
For engineers reviewing the SMCG54CA-E3/9AT datasheet, SMCG54CA-E3/9AT pinout, SMCG54CA-E3/9AT application, or SMCG54CA-E3/9AT equivalent, this device serves as a high-energy, low-clamping TVS for bidirectional signal line and power rail protection in automotive ECUs, industrial sensor interfaces, and telecom infrastructure where fast response (<1 ns), low incremental surge resistance, and MSL Level 1 reflow compatibility are critical.
Technical Context
The SMCG54CA-E3/9AT operates as a bidirectional avalanche diode, symmetrically clamping transient voltages above ±60.0 V in both polarities without polarity marking. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability under repetitive surge stress per IEC 61000-4-5 (10/1000 µs waveform).
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, with maximum junction temperature rated at +150 °C. It meets JESD22-B102 solderability and JESD201 Class 2 whisker resistance, and is qualified to AEC-Q101 for automotive underhood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range on protected lines. |
| VBR (min/max) | 60.0 V / 66.3 V at IT = 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 87.1 V at 17.2 A - Clamping voltage during 10/1000 µs surge; directly determines maximum stress imposed on downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling capability; enables protection against high-energy transients like ISO 7637-2 Pulse 5a. |
| ID @ VWM | 1.0 µA - Reverse leakage at stand-off voltage; low value minimizes standby power loss and avoids false triggering. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing per AEC standard. |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount, gull-wing leaded case with matte tin-plated terminals; 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad layout recommended per datasheet Fig. 4; MSL Level 1, 260 °C peak reflow profile compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; cathode-defined polarity absent in bidirectional configuration | No functional polarity marking on SMCG54CA-E3/9AT; terminals are electrically symmetric for AC or dual-rail protection. |
| Cathode | Current exit terminal in forward bias; identical electrical role to Anode in bidirectional operation | Both terminals behave identically under positive or negative transients; no band marking required per spec. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., CAN, LIN, RS-485) without external polarity management. |
| 1500 W peak pulse power | Withstands high-energy surges such as load dump transients in 12 V automotive systems without degradation. |
| 87.1 V clamping at 17.2 A | Provides margin below typical 100 V absolute maximum ratings of microcontrollers and transceivers in harsh environments. |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-failure field reliability. |
| MSL Level 1 & J-STD-020 compliance | Supports standard SMT assembly without baking or special handling; compatible with high-volume automated placement. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply rails in engine control units (ECUs) against ISO 7637-2 Pulse 1, 2a, and 5a transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed upstream of LDOs and MCU power inputs. Use Value: Limits rail excursions to ≤87.1 V during 1500 W surges, preventing latch-up or permanent damage to 5 V/3.3 V logic domains. |
Use Scenario: Safeguarding analog outputs (4–20 mA) and digital I/O (RS-485, CAN FD) in PLC analog modules exposed to field wiring inductive kick. IC Role / Device Role / Timing Role: Low-capacitance (typ. <50 pF) bidirectional shunt protector on differential bus lines. Use Value: Responds in <1 ns to suppress >1 kV transients while maintaining signal integrity up to 5 Mbps on CAN FD links. |
| Telecom Base Station DC Feeds | Consumer Appliance Motor Drive Circuits |
Use Scenario: Protecting -48 V DC power feeds in remote radio units (RRUs) from lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on input bulk capacitor bank, coordinated with secondary MOV/GDT stages. Use Value: Absorbs 10/1000 µs surges up to 17.2 A without thermal runaway, enabling compact, maintenance-free front-end design. |
Use Scenario: Shielding microcontroller GPIOs and gate drivers in smart washing machine motor inverters from commutation spikes. IC Role / Device Role / Timing Role: Localized clamping at MOSFET gate-source and MCU ADC inputs adjacent to brushless DC motor windings. Use Value: Prevents false resets and ADC offset drift caused by sub-100 ns switching noise, improving system uptime and calibration stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54CA | Same VWM (54 V) and PPPM (1500 W), but SMA (DO-214AC) package; higher RθJA (95 °C/W) limits sustained surge duty cycle. | Larger footprint and lower thermal efficiency; suitable only for lower-duty-cycle or non-automotive applications. | Select SMAJ54CA only when DO-215AB board space is unavailable and AEC-Q101 is not required. |
| SMCJ54CA | Identical VWM and PPPM, but SMC (DO-214AB) package; RθJA = 60 °C/W improves thermal derating, yet lacks AEC-Q101 qualification. | Higher power handling margin at elevated ambient temperatures, but not validated for automotive qualification testing. | Choose SMCJ54CA for industrial power supplies needing enhanced thermal headroom where automotive certification is unnecessary. |
Compared with SMAJ54CA and SMCJ54CA, the SMCG54CA-E3/9AT delivers superior automotive-grade reliability (AEC-Q101), optimized thermal performance in compact DO-215AB packaging, and guaranteed bidirectional symmetry-making it the preferred choice for space-constrained, high-reliability automotive and industrial designs.
Availability
SMCG54CA-E3/9AT is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom DC feed surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCG54CA-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 high-reliability, high-efficiency, and automotive-qualified solutions.
The SMCG series was developed specifically for surface-mount transient suppression in space-constrained, high-surge environments-targeting automotive, industrial automation, and telecom infrastructure where AEC-Q101 compliance and low-profile packaging are mandatory.
FAQ
What is the clamping voltage of SMCG54CA-E3/9AT at its rated peak pulse current?
The SMCG54CA-E3/9AT has a maximum clamping voltage (VC) of 87.1 V at 17.2 A peak pulse current (IPPM), measured under the standardized 10/1000 µs waveform. This value is critical for ensuring protected ICs remain within their absolute maximum voltage ratings during surge events, and is confirmed in the Vishay datasheet Document Number 88457, Table on page 2.
Is SMCG54CA-E3/9AT suitable for automotive applications?
Yes, SMCG54CA-E3/9AT is AEC-Q101 qualified and explicitly listed in Vishay's automotive-grade product documentation. Its construction-including glass-passivated junction, MSL Level 1 reflow compatibility, and validation across HTOL, temperature cycling, and ESD tests-makes it appropriate for under-hood and chassis-mounted automotive modules such as body controllers and ADAS sensors.
Does SMCG54CA-E3/9AT have polarity markings on the package?
No, SMCG54CA-E3/9AT is a bidirectional TVS diode and carries no polarity marking (e.g., cathode band) on the SMCG (DO-215AB) package. Both terminals are functionally identical, enabling symmetrical clamping of positive and negative transients-ideal for AC-coupled lines like CAN, LIN, or RS-485 without orientation constraints during placement.
What is the thermal resistance of SMCG54CA-E3/9AT from junction to ambient?
The typical junction-to-ambient thermal resistance (RθJA) of SMCG54CA-E3/9AT is 75 °C/W, measured on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad layout per datasheet Figure 4. This value assumes no additional heatsinking and is essential for calculating safe power derating above 25 °C ambient temperature.
How does the SMCG54CA-E3/9AT differ from unidirectional variants like SMCG54A?
Unlike unidirectional SMCG54A-which clamps only in reverse bias and requires correct polarity alignment-SMCG54CA-E3/9AT provides symmetrical clamping in both directions due to its bidirectional construction. It also omits the cathode band marking, supports AC signal protection, and shares identical VWM (54 V), VBR (60.0–66.3 V), and PPPM (1500 W) ratings with its unidirectional counterpart.
SMCG54CA-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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 17.2A
- 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)
SMCG54CA-E3/9AT FAQ
1.How can I place an order for SMCG54CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG54CA-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 SMCG54CA-E3/9AT reliable?
The price and inventory of SMCG54CA-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 SMCG54CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG54CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG54CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG54CA-E3/9AT?
SMCG54CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG54CA-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 SMCG54CA-E3/9AT?
For technical support, including SMCG54CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG54CA-E3/9AT requirements.
6.How does Aetrix verify that SMCG54CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG54CA-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 SMCG54CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG54CA-E3/9AT?
All SMCG54CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG54CA-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 SMCG54CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG54CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG54CA-E3/9AT Tags
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