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Vishay General Semiconductor - Diodes Division SMBG150A-M3/52
- Part No.:
- SMBG150A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG150A-M3/52.pdf
- Description:
- TVS DIODE 150VWM 243VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,302
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Product details
Overview
SMBG150A-M3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of power rails and signal lines. It features a 150 V stand-off voltage (VWM), 167–185 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), clamping voltage of 243 V at 2.5 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG150A-M3/52 datasheet, SMBG150A-M3/52 pinout, SMBG150A-M3/52 application, or SMBG150A-M3/52 equivalent, key selection criteria include clamping performance under 10/1000 μs surge, unidirectional polarity with cathode band marking, halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (<1.0 μA reverse leakage at 150 V), but triggers into low-impedance conduction when transient voltage exceeds its 167–185 V breakdown threshold. Its glass-passivated junction ensures stable avalanche characteristics and long-term reliability under repetitive surges.
The device is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine), junction temperature range of –55 °C to +150 °C, and thermal resistance of 20 °C/W (junction-to-lead), enabling effective heat dissipation in compact PCB layouts without heatsinking under typical transient duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 167 V / 185 V at 1 mA - defines precise avalanche initiation window for predictable protection threshold |
| VC @ IPPM | 243 V at 2.5 A - clamping voltage during 10/1000 μs surge; limits downstream voltage stress |
| PPPM | 600 W - peak pulse power handling capability per JEDEC standard waveform |
| IFSM | 100 A - surge current rating for 8.3 ms half-sine wave, critical for inductive load switching events |
| TJ max | +150 °C - maximum junction temperature supports operation in under-hood automotive environments |
| Package | SMBG (DO-215AA) - surface-mount package with 5.97 mm × 4.06 mm footprint and 1.90 mm height |
Pinout & Package
SMBG150A-M3/52 uses the SMBG (DO-215AA) package: a gull-wing, surface-mount case with two terminals, matte tin-plated leads, and cathode identification via a visible band on the body. The package meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground or low-side rail | Provides reference node for clamping action; must be routed with low-inductance path to ground plane |
| Cathode | Current exit point in forward bias; marked by band; connects to protected line or supply rail | Defines polarity-sensitive connection-reversal prevents clamping and risks device failure |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for industrial and automotive production without brominated flame retardants |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1/2a/3a transients and IEC 61000-4-5 surge events in 24 V systems |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., load dump, ESD coupling) |
| MSL Level 1 (260 °C reflow peak) | Enables single-pass lead-free reflow assembly without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs against load dump transients up to ±120 V per ISO 7637-2. IC Role / Device Role / Timing Role: Shunt clamping element placed between power rail and chassis ground, triggered within <1 ns. Use Value: Limits rail voltage to ≤243 V during 100 A/100 ms load dump, preventing damage to downstream DC-DC controllers and microcontrollers. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Unidirectional TVS connected across sensor output and ground to absorb EFT bursts and cable discharge events. Use Value: Maintains signal integrity by clamping transients to 243 V while adding only 2.0 pF junction capacitance at zero bias (per typical curve Fig. 4). |
| Telecom Line Card Surge Suppression | Motor Drive Gate Driver Protection |
Use Scenario: Secondary protection on 48 V DC power inputs of telecom line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of primary DC-DC converter input filter. Use Value: Absorbs 600 W surges per IEC 61000-4-5 Combination Wave (1.2/50 μs voltage, 8/20 μs current) without degradation over >1000 events. | Use Scenario: Clamping Miller-induced voltage spikes on high-side gate driver supply rails in 3-phase inverters. IC Role / Device Role / Timing Role: Unidirectional TVS tied between gate driver VDD and local ground to clamp positive-going transients. Use Value: Prevents false turn-on of SiC MOSFETs by limiting gate rail overshoot to 243 V during 50 ns dV/dt events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG150AHE3/52 | AEC-Q101 qualified; same electrical specs; E3 suffix denotes standard RoHS (non-halogen-free) | Preferred where halogen-free requirement is not mandated; identical automotive qualification | Select SMBG150AHE3/52 if halogen content is unrestricted and cost optimization is prioritized. |
| SMCJ150A-M3 | Higher package thermal mass (SMC, DO-214AB); 1500 W PPPM; same VWM/VBR but larger footprint (7.11 mm × 6.22 mm) | Better suited for higher-energy surges (e.g., IEC 61000-4-5 Level 4); requires PCB layout revision | Choose SMCJ150A-M3 only when 600 W is insufficient and board space allows larger package. |
Compared with SMBG150A-M3/52, SMBG150AHE3/52 offers identical protection performance without halogen-free constraint, while SMCJ150A-M3 delivers 2.5× higher surge energy handling at the cost of increased size and thermal inertia-making SMBG150A-M3/52 optimal for space-constrained, automotive-qualified 600 W protection.
Availability
SMBG150A-M3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power supply protection requiring stable component supply, halogen-free compliance, and AEC-Q101 reliability assurance.
Supply support for SMBG150A-M3/52 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 protection devices with emphasis on high-reliability, automotive-qualified components.
The SMBG series was engineered specifically for surface-mount transient suppression in space-constrained, high-reliability applications-including automotive power distribution, industrial control I/O, and telecom infrastructure-balancing low profile, high surge capability, and process consistency.
FAQ
What is the clamping voltage of SMBG150A-M3/52 and how is it measured?
The SMBG150A-M3/52 has a maximum clamping voltage (VC) of 243 V, measured at a peak pulse current (IPPM) of 2.5 A using the standardized 10/1000 μs double-exponential surge waveform. This value reflects the actual voltage seen by protected circuitry during a transient event and is guaranteed across the full operating temperature range per Vishay Document 88456.
Is SMBG150A-M3/52 suitable for automotive applications?
Yes, SMBG150A-M3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor modules. Its construction-glass-passivated junction, MSL Level 1 reflow compatibility, and –55 °C to +150 °C junction temperature range-meets stringent automotive environmental and reliability requirements as documented in the Vishay SMBG family datasheet.
What does the "M3" suffix mean in SMBG150A-M3/52?
The "M3" suffix in SMBG150A-M3/52 indicates halogen-free, RoHS-compliant construction meeting JEDEC J-STD-201 Class 2 whisker resistance requirements. It also specifies matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, distinguishing it from E3 (standard RoHS) and HM3 (AEC-Q101 + halogen-free) variants.
How does SMBG150A-M3/52 differ from bidirectional TVS diodes like SMBG150CA?
SMBG150A-M3/52 is unidirectional and features a cathode band for polarity-sensitive installation, whereas SMBG150CA is bidirectional with no polarity marking and symmetric clamping in both directions. The unidirectional SMBG150A-M3/52 provides lower leakage (<1.0 μA at 150 V) and is preferred for DC power rail protection, while SMBG150CA suits AC-coupled or floating signal lines.
What is the recommended PCB pad layout for SMBG150A-M3/52?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad for each terminal of SMBG150A-M3/52 to ensure adequate thermal dissipation and surge current handling. The pad layout must follow the DO-215AA outline in the datasheet, maintain ≥0.15 mm solder mask clearance, and avoid thermal reliefs on high-current paths to preserve RθJL = 20 °C/W performance.
SMBG150A-M3/52 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):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- 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)
SMBG150A-M3/52 FAQ
1.How can I place an order for SMBG150A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG150A-M3/52 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 SMBG150A-M3/52 reliable?
The price and inventory of SMBG150A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG150A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBG150A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG150A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG150A-M3/52?
SMBG150A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG150A-M3/52 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 SMBG150A-M3/52?
For technical support, including SMBG150A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG150A-M3/52 requirements.
6.How does Aetrix verify that SMBG150A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG150A-M3/52 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 SMBG150A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBG150A-M3/52?
All SMBG150A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG150A-M3/52, 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 SMBG150A-M3/52 part is unused and in its original packaging.
Return procedure for SMBG150A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG150A-M3/52 Tags
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