My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBG7.0A-M3/5B
- Part No.:
- SMBG7.0A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.0A-M3/5B.pdf
- Description:
- TVS DIODE 7VWM 12VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,003
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG7.0A-M3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMBG (DO-215AA) package, designed for clamping fast-rising voltage transients on power and signal lines. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage (VBR) at 10 mA, 12.0 V maximum clamping voltage (VC) at 50.0 A peak pulse current, and 600 W peak pulse power rating with a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMBG7.0A-M3/5B datasheet, SMBG7.0A-M3/5B pinout, SMBG7.0A-M3/5B application, or SMBG7.0A-M3/5B equivalent, key selection criteria include unidirectional polarity, 12.0 V clamping performance at 50 A, AEC-Q101 qualification status, halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold (7.78–8.60 V). Its low incremental surge resistance and sub-nanosecond response time enable effective suppression of ESD, lightning-induced surges, and inductive switching transients.
The SMBG7.0A-M3/5B is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), junction temperature range of –55 °C to +150 °C, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its cathode-band marking denotes polarity on the unidirectional variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - Ensures reliable turn-on within defined tolerance band under standardized test conditions |
| VC @ IPPM | 12.0 V at 50.0 A - Clamped voltage seen by protected circuit during worst-case 10/1000 μs surge |
| PPPM | 600 W - Peak transient power handling capability without failure under standard waveform |
| IFSM | 100 A - Withstands single 8.3 ms half-sine surge, critical for relay/coil-switching protection |
| TJ max | +150 °C - Enables operation in under-hood automotive and high-ambient industrial environments |
| Package | SMBG (DO-215AA) - Low-profile SMT outline with 0.255" × 0.155" footprint and matte tin-plated leads |
Pinout & Package
SMBG7.0A-M3/5B uses the SMBG (DO-215AA) surface-mount package: 2-terminal, gull-wing leaded, halogen-free, RoHS-compliant, and qualified to AEC-Q101. The cathode is marked by a band on the body; anode is unmarked. Leads are matte tin-plated and solderable per J-STD-002/JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts avalanche current during overvoltage events |
| Anode | Reference/ground return | Typically tied to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Provides robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on DC power rails |
| AEC-Q101 qualified | Validated for automotive electronics use including engine control units and body modules |
| Halogen-free & RoHS compliant (M3 suffix) | Meets environmental compliance requirements for industrial and automotive OEM production |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for downstream ICs |
| MSL Level 1, 260 °C peak reflow | Enables standard lead-free SMT assembly without moisture sensitivity concerns |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges above 7.0 V. Use Value: Limits voltage seen by MCU and CAN transceivers to ≤12.0 V during 50 A transients, preventing latch-up or gate oxide damage. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS connected across differential signal pair or from signal to ground to absorb ±8 kV HBM ESD. Use Value: Maintains signal integrity below 12.0 V clamping level while preserving low capacitance (<100 pF at 0 V), avoiding bandwidth degradation. |
| DC Motor Drive Circuit Protection | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding MOSFET gate drivers and freewheeling diodes in brushed DC motor controllers. IC Role / Device Role / Timing Role: Mounted across motor terminals or supply input to suppress inductive kickback spikes. Use Value: Absorbs 600 W transient energy with 100 A surge rating, enabling reliable operation under repeated 8.3 ms coil-deenergization events. | Use Scenario: Front-end protection for PoE-powered Ethernet ports exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Paired with common-mode chokes to suppress differential-mode surges on data pairs. Use Value: Delivers 12.0 V clamping at 50 A with <1 ns response, meeting GR-1089-CORE Level 3 telecom surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG7.0A-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3) | Acceptable for industrial use where halogen-free requirement is not mandated | Select SMBG7.0A-E3/5B if halogen-free certification is not required and cost optimization is prioritized. |
| SMBJ7.0A-M3 | Same VWM/VC, but SMBJ package (DO-214AB); higher thermal resistance (RθJA = 125 °C/W vs. 100 °C/W) | Lower power density handling; less suitable for high-duty-cycle surge environments | Choose SMBG7.0A-M3/5B over SMBJ7.0A-M3 when board space allows SMBG's superior thermal performance and AEC-Q101 validation. |
Compared with SMBG7.0A-E3/5B, the M3 version adds halogen-free compliance without sacrificing clamping or surge capability; versus SMBJ7.0A-M3, it delivers lower RθJA, tighter VBR tolerance, and verified automotive qualification - making it preferable for high-reliability, thermally constrained, or automotive-grade designs.
Availability
SMBG7.0A-M3/5B is available at Aetrix Electronics and suitable for automotive power supply protection, industrial sensor interface hardening, and DC motor drive circuit protection requiring stable component supply and long-term lifecycle support.
Supply support for SMBG7.0A-M3/5B 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, automotive qualification, and high-volume manufacturability.
The SMBG series was developed specifically for surface-mount transient suppression in space-constrained, high-reliability applications - combining AEC-Q101 qualification, halogen-free materials, and optimized thermal performance in the DO-215AA outline.
FAQ
What is the clamping voltage of SMBG7.0A-M3/5B at its rated peak pulse current?
The SMBG7.0A-M3/5B has a maximum clamping voltage (VC) of 12.0 V at 50.0 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per JEDEC standards and ensures downstream components experience no more than 12.0 V during transient events - critical for safeguarding 3.3 V or 5 V logic interfaces powered from a 7–12 V rail. The SMBG7.0A-M3/5B achieves this with low dynamic impedance and fast avalanche response.
Is SMBG7.0A-M3/5B qualified for automotive applications?
Yes, SMBG7.0A-M3/5B is AEC-Q101 qualified, confirming its suitability for automotive electronic systems including engine control, body electronics, and infotainment power domains. The qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and surge endurance. As part of the SMBG family, the SMBG7.0A-M3/5B also meets MSL Level 1 and supports lead-free reflow up to 260 °C - fulfilling key manufacturing and reliability requirements for Tier 1 automotive suppliers.
What does the "M3" suffix indicate in SMBG7.0A-M3/5B?
The "M3" suffix in SMBG7.0A-M3/5B denotes halogen-free, RoHS-compliant construction with industrial-grade reliability and JESD201 Class 2 whisker resistance. Unlike the "E3" variant, M3 uses bromine- and chlorine-free molding compounds and plating - satisfying strict environmental mandates in EU, China, and automotive OEM specifications. This designation applies to both the die passivation and external packaging, and is verified per Vishay's material categorization standard (doc# 99912).
How does SMBG7.0A-M3/5B differ from SMBG7.0CA-M3/5B?
SMBG7.0A-M3/5B is unidirectional, while SMBG7.0CA-M3/5B is bidirectional - meaning the latter clamps in both polarities and lacks polarity marking. Electrically, SMBG7.0CA-M3/5B has identical VWM (7.0 V), VBR (7.78–8.60 V), and VC (12.0 V) ratings but is intended for AC-coupled or floating signal lines (e.g., USB D+/D−, RS-485). The SMBG7.0A-M3/5B must be oriented with cathode toward the protected line; incorrect placement renders it ineffective. Both share the same SMBG package and AEC-Q101 qualification.
What PCB pad layout is recommended for optimal thermal and surge performance of SMBG7.0A-M3/5B?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for SMBG7.0A-M3/5B to achieve rated 600 W pulse power and 100 A surge current. These pads improve heat dissipation and reduce trace inductance during transient events. The recommended mounting pad layout is documented in the SMBG outline drawing (Document #88456, page 5), and adherence ensures compliance with derating curves in Figure 2. Using smaller pads reduces both surge current capability and thermal stability - especially critical in automotive under-hood deployments.
SMBG7.0A-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 50A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG7.0A-M3/5B FAQ
1.How can I place an order for SMBG7.0A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.0A-M3/5B 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 SMBG7.0A-M3/5B reliable?
The price and inventory of SMBG7.0A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG7.0A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG7.0A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.0A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.0A-M3/5B?
SMBG7.0A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.0A-M3/5B 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 SMBG7.0A-M3/5B?
For technical support, including SMBG7.0A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.0A-M3/5B requirements.
6.How does Aetrix verify that SMBG7.0A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG7.0A-M3/5B 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 SMBG7.0A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG7.0A-M3/5B?
All SMBG7.0A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.0A-M3/5B, 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 SMBG7.0A-M3/5B part is unused and in its original packaging.
Return procedure for SMBG7.0A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.0A-M3/5B 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 …
