My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCG26A-M3/57T
- Part No.:
- SMCG26A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG26A-M3/57T.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,499
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCG26A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the SMCG (DO-215AB) package, with a standoff voltage of 26 V, breakdown voltage range 28.9–31.9 V at 1 mA, peak pulse power rating of 1500 W (10/1000 µs), clamping voltage of 42.1 V at 35.6 A, and AEC-Q101 qualification for automotive-grade transient protection on power rails and signal lines.
For engineers reviewing the SMCG26A-M3/57T datasheet, SMCG26A-M3/57T pinout, SMCG26A-M3/57T application, or SMCG26A-M3/57T equivalent, key selection criteria include unidirectional polarity, 26 V stand-off rating, 1500 W surge capability, DO-215AB thermal performance (RθJA = 75 °C/W), and halogen-free RoHS compliance per M3 suffix - critical for automotive ECU, industrial sensor interface, and DC power input protection designs.
Technical Context
The SMCG26A-M3/57T operates as a silicon avalanche diode designed to clamp transient overvoltages above its breakdown threshold while maintaining low leakage (<1.0 µA at 26 V). Its glass-passivated junction ensures stable VBR tolerance and fast response time (<1 ns), enabling protection against ESD, load dump, and inductive switching spikes.
Rated for operation from –55 °C to +150 °C, it delivers 1500 W peak pulse power under standardized 10/1000 µs waveform conditions when mounted on 8.0 mm × 8.0 mm copper pads, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead) supporting robust thermal management in high-reliability applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 28.9 V / 31.9 V at 1 mA - defines reliable avalanche onset window for predictable clamping behavior |
| VC @ IPPM | 42.1 V at 35.6 A - clamped voltage during full 1500 W surge, limiting stress on downstream ICs |
| PPPM | 1500 W - peak pulse power handling for 10/1000 µs transients, suitable for ISO 7637-2 Pulse 1/2/5a |
| IFSM | 200 A - non-repetitive forward surge current rating (8.3 ms half-sine), supports load-dump immunity |
| TJ max | +150 °C - maximum junction temperature, enabling use in under-hood automotive environments |
| RθJA | 75 °C/W - thermal resistance with standard 8 mm × 8 mm pad layout, informs heatsinking requirements |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, low-profile gull-wing leaded case with matte tin-plated terminals, compliant with J-STD-002 and JESD 22-B102 solderability standards; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts during overvoltage to shunt energy to ground |
| Anode | Reference/return path | Typically tied to system ground or lower-potential rail; completes clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements, including temperature cycling, HTRB, and ESD |
| Halogen-free & RoHS compliant (M3) | Meets environmental compliance mandates without compromising surge robustness or thermal performance |
| Glass passivated junction | Ensures stable VBR over lifetime and improved reliability vs. epoxy-passivated alternatives |
| MSL Level 1 (J-STD-020) | Unlimited floor life at ≤30 °C/60% RH; no bake required prior to reflow, simplifying SMT assembly |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for sensitive MOSFETs and ICs |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) and body control modules (BCMs) against ISO 7637-2 load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input to clamp transients before they reach regulation circuitry. Use Value: Withstands 200 A surge (8.3 ms) and clamps to 42.1 V, preventing damage to downstream 36 V-rated regulators and microcontrollers. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) from ESD and cable discharge events in factory automation sensors. IC Role / Device Role / Timing Role: TVS connected across signal and ground near connector to divert sub-100 ns ESD pulses before reaching ADC front-end or op-amp buffers. Use Value: Sub-1 ns response and <1.0 µA leakage at 26 V preserve signal integrity and measurement accuracy in precision sensing systems. |
| Telecom DC Power Feeds | Consumer Device USB Power Input |
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras, access points) from induced surges on 48 V DC distribution lines. IC Role / Device Role / Timing Role: Unidirectional suppressor installed at DC input stage upstream of hot-swap controller and primary filter capacitors. Use Value: 1500 W peak power rating handles repetitive lightning-induced surges per IEC 61000-4-5 Level 4, while RθJL = 15 °C/W enables efficient heat transfer to PCB copper. | Use Scenario: Adding secondary-level overvoltage protection on 5 V USB-C power inputs in portable audio devices and smart home hubs. IC Role / Device Role / Timing Role: TVS placed after USB port EMI filter but before USB PD controller to absorb plug-in transients and contact bounce spikes. Use Value: 26 V standoff allows normal 5 V operation with headroom for USB PD 20 V negotiation, while 42.1 V clamping prevents latch-up in 5.5 V tolerant ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A-E3/57T | Same VWM (26 V), lower PPPM (400 W), SMA (DO-214AC) package, higher RθJA (~100 °C/W) | Limited to lower-energy transients; unsuitable for automotive load dump or telecom surge testing | Select when cost or board space is constrained and surge threat level is limited to IEC 61000-4-2 ESD only |
| SMCJ26A-M3/57T | Same VWM (26 V), identical PPPM (1500 W), but larger SMC (DO-214AB) package with higher thermal mass | Better thermal performance (RθJA ≈ 50 °C/W) but requires more PCB area and may not fit tight automotive layouts | Select when higher thermal margin is needed and footprint constraints allow DO-214AB dimensions |
Compared with SMAJ26A-E3/57T and SMCJ26A-M3/57T, the SMCG26A-M3/57T delivers identical surge robustness in a smaller DO-215AB footprint with superior thermal efficiency over SMAJ and better space utilization than SMCJ - making it optimal for high-density automotive and industrial modules where both performance and layout efficiency matter.
Availability
SMCG26A-M3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom DC power feeds, and consumer USB power input circuits requiring stable component supply with AEC-Q101 assurance and halogen-free compliance.
Supply support for SMCG26A-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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, automotive qualification, and application-specific performance.
The SMCG series is engineered for high-power transient suppression in space-constrained, thermally demanding environments - targeting automotive power systems, industrial controls, and infrastructure equipment where AEC-Q101 validation and consistent clamping behavior are mandatory.
FAQ
What is the clamping voltage of the SMCG26A-M3/57T at its rated peak pulse current?
The SMCG26A-M3/57T has a maximum clamping voltage (VC) of 42.1 V at its peak pulse current (IPPM) of 35.6 A, measured under the standard 10/1000 µs waveform. This value ensures downstream components rated up to 45 V remain within safe operating limits during surge events. The SMCG26A-M3/57T achieves this clamping performance while maintaining low leakage and fast response, critical for protecting sensitive power management ICs.
Is the SMCG26A-M3/57T suitable for automotive applications?
Yes, the SMCG26A-M3/57T is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and ADAS sensor modules. Its operating temperature range of –55 °C to +150 °C, 200 A surge rating (8.3 ms), and compliance with ISO 7637-2 test pulses confirm suitability. The SMCG26A-M3/57T also carries the M3 suffix indicating halogen-free, RoHS-compliant construction required by modern automotive OEMs.
What does the "M3" suffix mean in SMCG26A-M3/57T?
The "M3" suffix in SMCG26A-M3/57T denotes halogen-free, RoHS-compliant construction with industrial-grade reliability and JESD 201 Class 2 whisker resistance. It distinguishes the part from E3 (RoHS-compliant but not halogen-free) and HM3 (AEC-Q101 qualified + halogen-free) variants. The SMCG26A-M3/57T meets all material compliance requirements for automotive and industrial deployments without sacrificing electrical performance or thermal capability.
How does the SMCG26A-M3/57T compare to the SMAJ26A in terms of surge handling?
The SMCG26A-M3/57T provides 1500 W peak pulse power (10/1000 µs), triple that of the SMAJ26A (400 W), and supports higher surge currents (35.6 A vs. 12.3 A). Its DO-215AB package offers lower thermal resistance (75 °C/W vs. ~100 °C/W for SMA), enabling sustained operation under repeated transients. The SMCG26A-M3/57T is therefore preferred for demanding applications like automotive load dump, whereas SMAJ26A suits lighter-duty ESD-only scenarios.
What is the recommended PCB pad layout for optimal thermal performance of the SMCG26A-M3/57T?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area per terminal for the SMCG26A-M3/57T to achieve its rated 1500 W pulse power and 75 °C/W thermal resistance. Internal layer copper pours connected via multiple thermal vias further reduce RθJA. Deviating from this layout degrades surge capability and risks thermal runaway during repetitive events. The SMCG26A-M3/57T datasheet Figure 2 provides derating curves for elevated ambient temperatures based on this pad configuration.
SMCG26A-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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 35.6A
- 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)
SMCG26A-M3/57T FAQ
1.How can I place an order for SMCG26A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG26A-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 SMCG26A-M3/57T reliable?
The price and inventory of SMCG26A-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 SMCG26A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCG26A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG26A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG26A-M3/57T?
SMCG26A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG26A-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 SMCG26A-M3/57T?
For technical support, including SMCG26A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG26A-M3/57T requirements.
6.How does Aetrix verify that SMCG26A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG26A-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 SMCG26A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCG26A-M3/57T?
All SMCG26A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG26A-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 SMCG26A-M3/57T part is unused and in its original packaging.
Return procedure for SMCG26A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG26A-M3/57T 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 …
