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Vishay General Semiconductor - Diodes Division SMCG54A-M3/57T
- Part No.:
- SMCG54A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG54A-M3/57T.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,691
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Product details
Overview
SMCG54A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) diode in DO-215AB (SMCG) package, designed for clamping voltage transients on power and signal lines. 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 (10/1000 µs), 17.2 A peak pulse current (IPPM), and clamps to ≤87.1 V at rated surge. It is widely used in automotive power rail protection and industrial sensor interface circuits.
For engineers reviewing the SMCG54A-M3/57T datasheet, SMCG54A-M3/57T pinout, SMCG54A-M3/57T application, or SMCG54A-M3/57T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, halogen-free RoHS compliance (M3 suffix), 1500 W surge rating, and DO-215AB thermal performance with RθJA = 75 °C/W.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, entering avalanche conduction when reverse voltage exceeds VBR. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM), while the low incremental surge resistance enables effective energy diversion during fast transients (e.g., ISO 7637-2 pulses).
The SMCG54A-M3/57T is rated for TJ = –55 °C to +150 °C, supports 200 A non-repetitive forward surge (IFSM, 8.3 ms half-sine), and meets J-STD-020 MSL Level 1 with 260 °C reflow peak. Its DO-215AB package provides robust thermal dissipation via copper pad mounting (0.31" × 0.31") and complies with UL 94 V-0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR (min/max) | 60.0 V / 66.3 V at IT = 1 mA - Confirmed breakdown range ensures reliable turn-on within design tolerance. |
| VC @ IPPM | ≤87.1 V at 17.2 A - Clamping voltage under full 1500 W surge; determines maximum stress on downstream ICs. |
| PPPM | 1500 W (10/1000 µs waveform) - Peak transient energy handling capacity for automotive load-dump and ESD events. |
| ID @ VWM | ≤1.0 µA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| TJ max. | +150 °C - Enables operation in under-hood automotive environments and high-ambient industrial enclosures. |
| RθJA | 75 °C/W - Thermal resistance to ambient on standard 8 mm × 8 mm copper pads; informs heatsinking requirements. |
Pinout & Package
Package: DO-215AB (SMCG) - Surface-mount gull-wing leaded case with matte tin-plated terminals, UL 94 V-0 molding compound, and cathode band marking for unidirectional polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; completes clamping loop during transient events. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail); band-marked end carries reverse-biased voltage until clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TC, HTRB, etc.). |
| Halogen-free & RoHS compliant (M3) | Meets IEC 61249-2-21 and JEDEC J-STD-201 Class 2 whisker resistance; suitable for green manufacturing. |
| Low profile DO-215AB | Height ≤0.058" (1.47 mm); enables compact PCB layout in space-constrained modules like ECUs and motor drivers. |
| Fast response time | Sub-nanosecond turn-on; clamps ESD (IEC 61000-4-2) and switching spikes before sensitive ICs are damaged. |
| MSL Level 1 | No floor life limitation; supports standard SMT reflow without baking (peak 260 °C, <60 sec). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role: Unidirectional shunt clamp placed between VCC and GND, absorbing up to 1500 W surges. Use Value: Limits voltage seen by MCU to ≤87.1 V, preventing latch-up or permanent damage during vehicle cranking or alternator regulation faults. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA transmitter) from field-wiring induced surges in factory automation. IC Role / Device Role: Reverse-biased TVS across signal and return lines, triggered only during overvoltage events. Use Value: Maintains signal accuracy with <1.0 µA leakage at 54 V, while clamping cable discharge events to safe levels for precision DACs and op-amps. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Stage |
Use Scenario: Secondary-side DC bus protection in PoE-powered network switches exposed to lightning-induced surges on Ethernet cables. IC Role / Device Role: Unidirectional TVS on 48 V DC distribution rail, coordinated with upstream MOVs and gas discharge tubes. Use Value: Provides precise 54 V clamping threshold and fast response to complement slower primary-stage protectors, reducing let-through energy. |
Use Scenario: Input stage overvoltage suppression in USB-C PD adapters where 20 V input rails require robustness against AC line transients. IC Role / Device Role: Standoff-rated TVS placed after bridge rectifier and bulk capacitor, clamping switch-mode regulator input. Use Value: Withstands repeated 1500 W surges without degradation, ensuring long-term reliability in consumer-grade power supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54A-E3/57T (Vishay) | Same VWM/VBR/PPPM specs but in smaller SMA (DO-214AC) package; RθJA = 85 °C/W vs. 75 °C/W. | Limited thermal margin in high-power-density layouts; less suitable for sustained surge duty cycles. | Select SMAJ54A-E3/57T only if board space is constrained and average surge frequency is low. |
| 1.5KE54A (ON Semiconductor) | Through-hole DO-201 package; higher VBR tolerance (54–60.5 V), same 1500 W rating, but no AEC-Q101 qualification. | Not approved for automotive use; requires manual assembly or wave soldering; larger footprint. | Choose 1.5KE54A for cost-sensitive industrial prototypes where AEC-Q101 is not mandated. |
Compared with SMAJ54A-E3/57T and 1.5KE54A, the SMCG54A-M3/57T delivers superior thermal performance in surface-mount form factor and certified automotive reliability-critical for production ECUs and safety-critical subsystems.
Availability
SMCG54A-M3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning, and telecom power supply designs requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for SMCG54A-M3/57T 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 and automotive-grade qualification.
The SMCG series targets high-energy transient suppression in harsh environments, with design focus on AEC-Q101 compliance, low clamping voltage, and surface-mount manufacturability for next-generation automotive and industrial systems.
FAQ
What is the polarity configuration of the SMCG54A-M3/57T?
The SMCG54A-M3/57T is a unidirectional TVS diode, meaning it conducts only in reverse bias above its breakdown voltage. The cathode is marked by a band on the DO-215AB package body, and the anode connects to ground. This configuration ensures clamping action only on positive transients relative to ground-ideal for protecting positive supply rails. Its unidirectional nature distinguishes it from bidirectional variants like SMCG54CA.
Does the SMCG54A-M3/57T meet automotive qualification standards?
Yes, the SMCG54A-M3/57T is AEC-Q101 qualified, as confirmed in Vishay's official documentation (Document Number: 88457). This certification covers stress tests including high-temperature operating life, temperature cycling, and highly accelerated stress testing-validating its suitability for automotive powertrain, body control, and ADAS applications where reliability under thermal and mechanical stress is critical.
What does the "M3" suffix indicate in SMCG54A-M3/57T?
The "M3" suffix denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. Unlike "E3" (standard RoHS), M3 ensures compliance with stricter environmental regulations in automotive and consumer markets, particularly where brominated flame retardants are prohibited. This makes SMCG54A-M3/57T appropriate for green manufacturing and export-controlled supply chains.
How is the SMCG54A-M3/57T mounted and what PCB layout is recommended?
The SMCG54A-M3/57T uses gull-wing leads for surface-mount reflow and requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve specified thermal performance (RθJA = 75 °C/W). Pad layout must follow Vishay's DO-215AB outline drawing: 0.038"–0.058" lead width, 0.220"–0.245" body length, and proper solder mask clearance. Avoid thermal reliefs on pads to maintain heat dissipation.
Can the SMCG54A-M3/57T be used in bidirectional protection applications?
No-the SMCG54A-M3/57T is strictly unidirectional and lacks symmetrical breakdown characteristics. For bidirectional protection, Vishay specifies the SMCG54CA variant (with CA suffix), which exhibits matched VBR in both polarities. Using SMCG54A-M3/57T in bidirectional configurations risks failure during negative transients, as it blocks conduction below ~0.7 V forward drop and offers no reverse clamping capability.
SMCG54A-M3/57T 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMCG54A-M3/57T FAQ
1.How can I place an order for SMCG54A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG54A-M3/57T 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 SMCG54A-M3/57T reliable?
The price and inventory of SMCG54A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG54A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCG54A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG54A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG54A-M3/57T?
SMCG54A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG54A-M3/57T 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 SMCG54A-M3/57T?
For technical support, including SMCG54A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG54A-M3/57T requirements.
6.How does Aetrix verify that SMCG54A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG54A-M3/57T 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 SMCG54A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCG54A-M3/57T?
All SMCG54A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG54A-M3/57T, 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 SMCG54A-M3/57T part is unused and in its original packaging.
Return procedure for SMCG54A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG54A-M3/57T Tags
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