My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCG26CA-M3/57T
- Part No.:
- SMCG26CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG26CA-M3/57T.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,720
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCG26CA-M3/57T 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 signal and power lines. It features a 26 V stand-off voltage (VWM), 28.9–31.9 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), clamping voltage of 42.1 V at 35.6 A, and AEC-Q101 qualification for automotive reliability.
For engineers reviewing the SMCG26CA-M3/57T datasheet, SMCG26CA-M3/57T pinout, SMCG26CA-M3/57T application, or SMCG26CA-M3/57T equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.4), halogen-free RoHS compliance (M3 suffix), MSL Level 1 rating, and suitability for 12 V/24 V automotive bus protection, sensor I/O lines, and industrial control inputs.
Technical Context
This device operates as a bidirectional avalanche diode, leveraging glass-passivated junction technology to deliver symmetrical clamping in both polarities without polarity marking. Its 1500 W PPPM rating is specified under the standardized 10/1000 µs waveform, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W enabling effective surge energy dissipation on standard PCB copper pads.
The SMCG26CA-M3/57T exhibits ≤1.0 µA maximum reverse leakage at VWM (26 V), a clamping voltage of 42.1 V at 35.6 A IPPM, and operates across –55 °C to +150 °C junction temperature range - meeting requirements for under-hood automotive and harsh industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for 24 V nominal systems. |
| VBR (min/max) | 28.9 V / 31.9 V at 1 mA - Confirmed bidirectional breakdown threshold; ensures predictable turn-on during transients. |
| VC @ IPPM | 42.1 V at 35.6 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 1500 W - Peak surge power handling per IEC 61000-4-5; supports high-energy lightning and EFT events. |
| TJ max | +150 °C - Enables operation in engine control units, motor drives, and other high-temperature locations. |
| Package | SMCG (DO-215AB) - Low-profile SMD outline with 0.31" × 0.31" copper pad requirement; optimized for automated placement and reflow. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
SMCG26CA-M3/57T uses the DO-215AB (SMCG) surface-mount package: dual-terminal, symmetrical, unmarked bidirectional configuration. No polarity band; terminals are functionally identical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no fixed polarity assignment. |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; forms symmetrical clamping path across protected line pair (e.g., CAN_H/CAN_L, RS-485 A/B). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential or AC-coupled lines (e.g., CAN, RS-485, audio) without polarity concerns. |
| Halogen-free & RoHS compliant (M3) | Meets IPC-1752A material declaration requirements and environmental compliance mandates for global OEMs. |
| MSL Level 1 (260 °C peak) | Allows standard lead-free reflow without baking or special handling; simplifies manufacturing integration. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients (e.g., ISO 7637-2 Pulse 1/2a/5a); improves system immunity margin. |
| Glass-passivated junction | Provides stable VBR over lifetime and temperature; eliminates risk of junction degradation under repeated surge stress. |
Applications
| Automotive CAN Bus Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN_H and CAN_L lines in body control modules against load dump, jump-start surges, and ESD. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pair to clamp common-mode and differential transients before transceiver input. Use Value: Maintains CAN signal integrity by limiting clamped voltage to 42.1 V while absorbing 1500 W surges - within TJA1042/TJA1051 absolute maximum ratings. | Use Scenario: Safeguarding RS-485 transceivers (e.g., MAX13487, SN65HVD72) in factory automation PLCs exposed to motor switching noise. IC Role / Device Role / Timing Role: Differential-line TVS connected between A and B lines to suppress ±30 kV ESD (IEC 61000-4-2) and 1 kV EFT bursts. Use Value: Achieves <100 ns response time and clamps to 42.1 V, preventing latch-up or damage to transceiver input stages rated for ±15 V common-mode range. |
| Automotive Sensor Signal Lines | Power Supply Input Protection (24 V) |
Use Scenario: Shielding analog outputs (e.g., pressure, temperature sensors) in ADAS front radar modules from board-level ESD and cable discharge events. IC Role / Device Role / Timing Role: Single SMCG26CA-M3/57T placed from signal line to ground to suppress unidirectional or bipolar transients induced by nearby RF sources. Use Value: Leverages bidirectional symmetry to handle both positive and negative transients without external polarity logic - reducing BOM count vs. unidirectional solutions. | Use Scenario: Front-end protection of 24 V power rails feeding infotainment head units or telematics gateways subjected to ISO 16750-2 load dump pulses. IC Role / Device Role / Timing Role: Primary TVS in series with upstream fuse and parallel to bulk capacitor to absorb 1500 W surge energy before regulator input. Use Value: Withstands 35.6 A peak current at 42.1 V clamping, ensuring downstream DC/DC converters (e.g., LM5017) remain within 45 V absolute max rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26CA-E3/57T | Same VWM (26 V), lower PPPM (400 W), SMA (DO-214AC) package, higher RθJA (110 °C/W). | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-current EFT. | Select only when space constraints favor SMA footprint and surge requirements are ≤400 W. |
| SMCJ26CA-M3 | Same VWM (26 V), same PPPM (1500 W), but SMC (DO-214AB) package - larger footprint, higher thermal mass. | Better thermal performance (RθJA ≈ 50 °C/W), but incompatible with SMCG land pattern; requires PCB redesign. | Choose when higher thermal margin is critical and layout flexibility allows SMC footprint adoption. |
Compared with SMAJ26CA-E3/57T and SMCJ26CA-M3, the SMCG26CA-M3/57T delivers optimal balance of high-power surge handling (1500 W), compact DO-215AB packaging, and automotive-grade reliability - making it preferred for space-constrained, high-immunity automotive and industrial designs where MSL Level 1 and halogen-free compliance are mandatory.
Availability
SMCG26CA-M3/57T is available at Aetrix Electronics and suitable for automotive CAN bus protection, industrial RS-485 interfaces, automotive sensor signal lines, and 24 V power supply input protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMCG26CA-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series is engineered for high-power transient suppression in automotive and industrial environments, targeting applications demanding AEC-Q101 qualification, low-profile SMD packaging, and consistent bidirectional clamping performance.
FAQ
What does the "CA" suffix indicate in SMCG26CA-M3/57T?
The "CA" suffix denotes a bidirectional configuration: SMCG26CA-M3/57T provides symmetrical clamping in both polarities, with no cathode marking and identical electrical behavior regardless of voltage polarity applied. This distinguishes it from unidirectional variants (e.g., SMCG26A), which feature a cathode band and conduct only in one direction. The CA version is essential for protecting differential or AC-coupled signal lines like CAN or RS-485.
Is SMCG26CA-M3/57T suitable for automotive applications?
Yes, SMCG26CA-M3/57T is AEC-Q101 qualified and specifically designed for automotive use. It meets stringent requirements for temperature cycling, high-temperature reverse bias, and ESD robustness. Its 26 V VWM aligns with 24 V vehicle electrical systems, and its 1500 W PPPM rating handles ISO 7637-2 load dump and pulse 5a events. The M3 suffix confirms halogen-free, RoHS-compliant construction required by major Tier 1 suppliers.
What is the clamping voltage of SMCG26CA-M3/57T and why does it matter?
The clamping voltage (VC) of SMCG26CA-M3/57T is 42.1 V at 35.6 A peak pulse current (IPPM) under the 10/1000 µs waveform. This value represents the maximum voltage imposed on protected circuitry during a surge event. It matters because downstream components - such as CAN transceivers or RS-485 drivers - must withstand this clamped level; exceeding their absolute maximum ratings causes permanent damage. At 42.1 V, SMCG26CA-M3/57T safely protects devices rated for ≥45 V absolute max.
How does the SMCG (DO-215AB) package compare to SMA or SMC packages?
The SMCG (DO-215AB) package used by SMCG26CA-M3/57T offers a 30 % smaller footprint than SMC (DO-214AB) and 15 % smaller than SMA (DO-214AC), while maintaining 1500 W PPPM capability. Its low profile (0.058" height) suits ultra-thin modules, and MSL Level 1 rating enables standard reflow without pre-baking. Unlike SMA, SMCG achieves lower thermal resistance (RθJA = 75 °C/W vs. 110 °C/W), improving power derating in compact layouts.
Does SMCG26CA-M3/57T require a heatsink for 1500 W surge handling?
No, SMCG26CA-M3/57T does not require an external heatsink for single-event 1500 W surge handling, as the energy is dissipated transiently (≤1 ms). Its thermal design relies on short-term junction-to-lead (RθJL = 15 °C/W) conduction into PCB copper pads - specifically 0.31" × 0.31" (8.0 mm × 8.0 mm) per terminal. Continuous power dissipation is limited to 6.5 W at TA = 50 °C, so sustained DC stress is not applicable; the device is intended solely for transient suppression, not steady-state regulation.
SMCG26CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCG26CA-M3/57T FAQ
1.How can I place an order for SMCG26CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG26CA-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 SMCG26CA-M3/57T reliable?
The price and inventory of SMCG26CA-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 SMCG26CA-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCG26CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG26CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG26CA-M3/57T?
SMCG26CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG26CA-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 SMCG26CA-M3/57T?
For technical support, including SMCG26CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG26CA-M3/57T requirements.
6.How does Aetrix verify that SMCG26CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG26CA-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 SMCG26CA-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCG26CA-M3/57T?
All SMCG26CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG26CA-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 SMCG26CA-M3/57T part is unused and in its original packaging.
Return procedure for SMCG26CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG26CA-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 …
