My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCG70A-M3/9AT
- Part No.:
- SMCG70A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG70A-M3/9AT.pdf
- Description:
- TVS DIODE 70VWM 113VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,539
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCG70A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in DO-215AB (SMCG) package, with 70 V standoff voltage (VWM), 77.8–86.0 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and 13.3 A peak pulse current (IPPM) at 10/1000 µs waveform. It protects MOSFETs and signal lines in automotive powertrain control units against inductive switching transients.
For engineers reviewing the SMCG70A-M3/9AT datasheet, SMCG70A-M3/9AT pinout, SMCG70A-M3/9AT application, or SMCG70A-M3/9AT equivalent, key selection criteria include clamping voltage (VC = 113 V at IPPM), AEC-Q101 qualification, halogen-free RoHS compliance (M3 suffix), and thermal resistance (RθJA = 75 °C/W) for industrial and automotive board-level surge protection design.
Technical Context
This device operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 µs double-exponential surge waveform, with VC = 113 V measured at IPPM = 13.3 A under standardized 8.0 mm × 8.0 mm copper pad layout.
Thermal performance is characterized by RθJA = 75 °C/W and RθJL = 15 °C/W, enabling operation up to TJ = +150 °C. The M3 suffix confirms halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance - critical for long-life automotive and industrial deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70 V - maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 77.8 V / 86.0 V at IT = 1 mA - ensures reliable avalanche initiation within tight tolerance band |
| VC @ IPPM | 113 V at 13.3 A - clamping voltage limits downstream IC stress during 10/1000 µs surge events |
| PPPM | 1500 W - peak transient energy handling capability per single non-repetitive pulse |
| ID @ VWM | 1.0 µA - ultra-low leakage preserves signal integrity in high-impedance sensor interfaces |
| TJ max | +150 °C - supports under-hood automotive environments without derating below full rating |
| RθJA | 75 °C/W - defines thermal rise above ambient under standard PCB pad layout (8.0 mm × 8.0 mm) |
Pinout & Package
Package: DO-215AB (SMCG), surface-mount gull-wing lead frame with matte tin-plated terminals solderable per J-STD-002 and JESD22-B102. Polarity marked by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to protected line's low-side reference (e.g., ground return path for signal line clamp) |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected line (e.g., CAN_H or MCU I/O); band-marked end indicates cathode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain, body electronics, and ADAS modules requiring zero-failure reliability over 15-year service life |
| Glass-passivated junction | Enables stable VBR tolerance and long-term parameter stability under thermal cycling and humidity exposure |
| Halogen-free (M3) | Meets IPC-4101D/126 and JEDEC J-STD-020 MSL Level 1 requirements for lead-free reflow at 260 °C peak |
| Low RθJL = 15 °C/W | Supports efficient heat transfer to PCB copper pads, reducing localized hot spots during repetitive surge events |
| 1500 W PPPM @ 10/1000 µs | Provides robust protection against ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 Combination Wave surges |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting microcontroller I/O and gate driver inputs from load dump and inductive kickback in 12 V/24 V engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between MCU GPIO and external connector, clamping transients before they reach silicon. Use Value: VC = 113 V ensures MCU I/O remains below absolute maximum rating (typically 120 V) during 100 V/100 ms load dump events. | Use Scenario: Shielding PLC analog input channels from relay coil flyback and contact arcing in factory automation systems. IC Role / Device Role / Timing Role: Standoff-rated TVS on 4–20 mA loop inputs, absorbing 1500 W surges without degradation over 10⁵ cycles. Use Value: VWM = 70 V accommodates common-mode voltage swings while maintaining <1.0 µA leakage at full rated voltage. |
| Automotive Body Electronics | Telecom Line Interface Protection |
Use Scenario: Safeguarding LIN bus transceivers and door module sensors against ESD and battery reversal-induced transients. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional device used in series with pull-up resistors to maintain LIN signal integrity. Use Value: AEC-Q101 qualification and M3 halogen-free construction meet OEM Tier-1 environmental and reliability mandates. | Use Scenario: Front-end protection for Ethernet PHYs and RS-485 transceivers exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary clamping element in multi-stage protection circuit, shunting >90% of surge energy before secondary MOV/GDT stage. Use Value: 13.3 A IPPM and 113 V VC enable compliance with IEC 61000-4-5 Level 4 (4 kV/2 kA) when combined with series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ70A-E3/57T | Same VWM (70 V), lower PPPM (400 W), SMA (DO-214AC) package, non-AEC-Q101 | Not qualified for automotive; suitable only for consumer/industrial PCBs with lower surge exposure | Select if cost-sensitive and AEC-Q101 not required; verify thermal margin with RθJA = 110 °C/W |
| SMCJ70A-M3/9AT | Same VWM (70 V), higher PPPM (1500 W), identical DO-215AB package, AEC-Q101 qualified, but RθJA = 60 °C/W | Better thermal performance; same footprint but tighter thermal design margin required | Prefer for high-reliability automotive use where junction temperature must stay <135 °C under repeated surges |
Compared with SMAJ70A-E3/57T and SMCJ70A-M3/9AT, the SMCG70A-M3/9AT delivers identical surge rating and AEC-Q101 compliance in a lower-profile DO-215AB package, with optimized RθJA (75 °C/W) balancing board space and thermal management for compact ECU designs.
Availability
SMCG70A-M3/9AT is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive inputs, and telecom line interface protection requiring stable component supply across extended production lifecycles.
Supply support for SMCG70A-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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and transient protection devices with emphasis on automotive-grade reliability and AEC-Q101 validation.
The SMCG series was engineered specifically for high-power, surface-mount transient suppression in space-constrained automotive and industrial control modules - prioritizing low-profile packaging, repeatable clamping, and long-term parametric stability under thermal stress.
FAQ
What is the clamping voltage of the SMCG70A-M3/9AT under a 10/1000 µs surge?
The SMCG70A-M3/9AT has a maximum clamping voltage (VC) of 113 V when subjected to its rated peak pulse current (IPPM = 13.3 A) using the standard 10/1000 µs double-exponential waveform. This value is measured under the defined 8.0 mm × 8.0 mm copper pad layout per Vishay Document 88457, ensuring consistent performance validation across designs that follow recommended PCB thermal design rules. The SMCG70A-M3/9AT maintains this clamping performance across its full operating temperature range (−55 °C to +150 °C).
Is the SMCG70A-M3/9AT qualified for automotive applications?
Yes, the SMCG70A-M3/9AT is AEC-Q101 qualified, confirming its suitability for automotive powertrain, body electronics, and ADAS applications. The M3 suffix denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance, and the device meets MSL Level 1 per J-STD-020 with a maximum peak reflow temperature of 260 °C. These qualifications are explicitly stated in Vishay Document 88457 and validated through accelerated stress testing including temperature cycling, humidity bias, and high-temperature operating life. The SMCG70A-M3/9AT is designed for deployment in under-hood ECUs where reliability over 15 years is mandatory.
What does the "M3" suffix mean in SMCG70A-M3/9AT?
The "M3" suffix in SMCG70A-M3/9AT indicates halogen-free, RoHS-compliant construction meeting IPC-4101D/126 and JEDEC J-STD-020 MSL Level 1 standards. It also certifies compliance with JESD201 Class 2 whisker resistance testing, ensuring long-term solder joint integrity in high-reliability applications. Unlike the E3 suffix (RoHS-compliant but not halogen-free), M3 guarantees absence of brominated flame retardants and chlorine-based compounds - a requirement for many Tier-1 automotive OEMs. The SMCG70A-M3/9AT's M3 designation applies to both material composition and process control, verified per Vishay's internal qualification protocol and third-party audits.
How does the SMCG70A-M3/9AT compare to SMAJ70A in terms of surge handling?
The SMCG70A-M3/9AT delivers 1500 W peak pulse power (PPPM) under a 10/1000 µs waveform, whereas the SMAJ70A offers only 400 W PPPM - a 275% increase in transient energy absorption. This difference stems from the SMCG's larger DO-215AB package (vs. SMA's DO-214AC), enabling lower thermal resistance (RθJA = 75 °C/W vs. 110 °C/W) and higher surge current capacity (IPPM = 13.3 A vs. 5.0 A). Both share identical VWM (70 V) and VBR (77.8–86.0 V), but the SMCG70A-M3/9AT sustains clamping performance across more severe surge profiles like ISO 7637-2 Pulse 5a. The SMCG70A-M3/9AT is therefore preferred for automotive and industrial applications demanding higher robustness.
What is the maximum operating temperature for the SMCG70A-M3/9AT?
The SMCG70A-M3/9AT has a maximum operating junction temperature (TJ max) of +150 °C, as specified in Vishay Document 88457. This rating enables continuous operation in under-hood automotive environments and industrial enclosures without derating, provided the PCB layout adheres to the recommended 8.0 mm × 8.0 mm copper pad per terminal and ambient temperature remains ≤ +85 °C. Thermal calculations using RθJA = 75 °C/W confirm that at 6.5 W steady-state dissipation (PD), junction temperature rise is limited to 488 °C - but since PD is specified at TA = 50 °C and derates linearly above that point, actual usable power at +105 °C ambient is ~3.3 W. The SMCG70A-M3/9AT maintains full transient rating up to TJ = +150 °C.
SMCG70A-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):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 13.3A
- 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)
SMCG70A-M3/9AT FAQ
1.How can I place an order for SMCG70A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG70A-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 SMCG70A-M3/9AT reliable?
The price and inventory of SMCG70A-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 SMCG70A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG70A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG70A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG70A-M3/9AT?
SMCG70A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG70A-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 SMCG70A-M3/9AT?
For technical support, including SMCG70A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG70A-M3/9AT requirements.
6.How does Aetrix verify that SMCG70A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG70A-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 SMCG70A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG70A-M3/9AT?
All SMCG70A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG70A-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 SMCG70A-M3/9AT part is unused and in its original packaging.
Return procedure for SMCG70A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG70A-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 …
