My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCG43A-M3/9AT
- Part No.:
- SMCG43A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG43A-M3/9AT.pdf
- Description:
- TVS DIODE 43VWM 69.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,322
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCG43A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in the SMCG (DO-215AB) package, with a 43 V stand-off voltage (VWM), 47.8–52.8 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and 21.6 A peak pulse current (IPPM) under 10/1000 µs waveform. It protects MOSFETs and signal lines in automotive powertrain control modules against inductive switching transients.
For engineers reviewing the SMCG43A-M3/9AT datasheet, SMCG43A-M3/9AT pinout, SMCG43A-M3/9AT application, or SMCG43A-M3/9AT equivalent, key selection criteria include clamping voltage (69.4 V at IPPM), AEC-Q101 qualification, halogen-free RoHS compliance, and thermal resistance (RθJA = 75 °C/W) for high-reliability automotive PCB layouts.
Technical Context
This device operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified breakdown range (47.8–52.8 V at 1 mA). Its glass-passivated junction ensures stable leakage performance (<1.0 µA at 43 V) and fast response to ESD and surge events.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads per terminal, it meets MSL Level 1 (260 °C reflow peak) and delivers 1500 W surge handling with low incremental surge resistance-critical for protecting 48 V mild-hybrid vehicle subsystems and industrial motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 47.8 V / 52.8 V at 1 mA - Confirmed breakdown threshold range for reliable overvoltage triggering |
| VC @ IPPM | 69.4 V at 21.6 A - Clamping voltage during 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - Peak transient energy absorption capability under standardized surge waveform |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on recommended 8 mm × 8 mm pad layout |
| TJ max. | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: SMCG (DO-215AB), surface-mount gull-wing leaded case with matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to system ground or low-side return in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 48 V rail or sensor input); band denotes cathode end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive powertrain and chassis applications requiring extended temperature and lifetime reliability |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets global environmental regulations without compromising surge robustness or thermal performance |
| Low incremental surge resistance | Enables tighter clamping (69.4 V) under 21.6 A surge, reducing voltage overshoot on protected nodes |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without preconditioning or dry-pack requirements |
| Glass-passivated junction | Ensures stable leakage (<1.0 µA) and repeatable VBR across temperature and life cycle |
Applications
| Automotive Power Distribution | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protection of 48 V battery rail inputs in mild-hybrid vehicle DC-DC converters. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient spikes induced by load dump or relay bounce. Use Value: Limits voltage excursion to ≤69.4 V during 1500 W surges, preserving gate oxide integrity of SiC MOSFETs. | Use Scenario: Input protection for isolated gate drivers in servo amplifier front-end stages. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp on PWM signal lines feeding IGBT half-bridges. Use Value: Sub-50 ns response time prevents false triggering and latch-up in high-speed drive circuits. |
| Automotive Sensor Interface | Telecom Power Supply Input |
Use Scenario: Reverse-polarity and surge protection for LIN bus transceivers in body control modules. IC Role / Device Role / Timing Role: Unidirectional clamping element placed between connector and transceiver IC. Use Value: Withstands 200 A IFSM (8.3 ms half-sine), covering both ESD and long-duration load-switching events. | Use Scenario: Primary-side transient suppression on 48 V telecom rectifier outputs feeding PoE injectors. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing lightning-induced surges on DC distribution lines. Use Value: 1500 W PPPM rating meets ITU-T K.20/21 immunity requirements for outdoor telecom infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-M3/86A | Same VWM (43 V), lower PPPM (400 W), SMA (DO-214AC) package | Limited to lower-energy surges; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 1500 W surge margin |
| SMCJ43A-M3/86A | Same VWM (43 V), identical PPPM (1500 W), but larger SMC (DO-214AB) package | Requires more PCB area; higher RθJA (~50 °C/W) limits power density | Choose only if existing SMC footprint is fixed and DO-215AB re-layout is impractical |
Compared with SMCG43A-M3/9AT, SMAJ43A-M3/86A offers reduced surge capacity and no automotive qualification, while SMCJ43A-M3/86A matches power rating but sacrifices board space efficiency and thermal performance due to larger package size and inferior thermal resistance.
Availability
SMCG43A-M3/9AT is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive protection, and telecom DC input conditioning requiring stable component supply across multi-year production cycles.
Supply support for SMCG43A-M3/9AT 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and application-specific ruggedization.
The SMCG series targets high-energy transient suppression in space-constrained, thermally demanding environments-specifically engineered for automotive AEC-Q101 compliance and industrial surge immunity standards.
FAQ
What is the clamping voltage of the SMCG43A-M3/9AT under maximum rated surge current?
The SMCG43A-M3/9AT has a maximum clamping voltage (VC) of 69.4 V when subjected to its rated peak pulse current (IPPM) of 21.6 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events, ensuring downstream components like MOSFETs remain within safe operating limits.
Is the SMCG43A-M3/9AT qualified for automotive applications?
Yes, the SMCG43A-M3/9AT is AEC-Q101 qualified, confirming its suitability for automotive applications including powertrain, chassis, and body electronics. The M3 suffix indicates halogen-free, RoHS-compliant construction, and the device meets MSL Level 1 reflow requirements-making it appropriate for under-hood and other high-reliability automotive PCB assemblies where thermal and mechanical robustness are critical.
What does the "M3" suffix mean in SMCG43A-M3/9AT?
The "M3" suffix in SMCG43A-M3/9AT designates halogen-free, RoHS-compliant construction with industrial-grade reliability. It distinguishes this variant from "E3" (standard RoHS) and "HM3" (AEC-Q101 + halogen-free) versions. All M3 devices meet JESD 201 Class 2 whisker resistance and are rated for operation from –55 °C to +150 °C, aligning with extended-temperature industrial and automotive use cases.
How does the SMCG43A-M3/9AT compare to bidirectional variants like SMCG43CA?
The SMCG43A-M3/9AT is unidirectional and features polarity marking (cathode band), whereas SMCG43CA is bidirectional with no polarity marking and symmetric clamping in both directions. SMCG43A-M3/9AT supports forward conduction and is suited for DC rail protection, while SMCG43CA applies to AC-coupled or differential signal lines. Their VWM, VBR, and PPPM ratings are identical, but circuit topology determines correct selection.
What is the thermal resistance of the SMCG43A-M3/9AT, and how does it affect layout?
The SMCG43A-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad per terminal. This value assumes no internal layer copper; adding inner-layer thermal vias or increasing pad area reduces effective RθJA. For sustained power dissipation or repeated surges, thermal design must ensure TJ remains below 150 °C using this baseline.
SMCG43A-M3/9AT 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 21.6A
- 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)
SMCG43A-M3/9AT FAQ
1.How can I place an order for SMCG43A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG43A-M3/9AT 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 SMCG43A-M3/9AT reliable?
The price and inventory of SMCG43A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG43A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG43A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG43A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG43A-M3/9AT?
SMCG43A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG43A-M3/9AT 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 SMCG43A-M3/9AT?
For technical support, including SMCG43A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG43A-M3/9AT requirements.
6.How does Aetrix verify that SMCG43A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG43A-M3/9AT 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 SMCG43A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG43A-M3/9AT?
All SMCG43A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG43A-M3/9AT, 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 SMCG43A-M3/9AT part is unused and in its original packaging.
Return procedure for SMCG43A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG43A-M3/9AT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
