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Vishay General Semiconductor - Diodes Division SMBG150A-M3/5B
- Part No.:
- SMBG150A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG150A-M3/5B.pdf
- Description:
- TVS DIODE 150VWM 243VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,322
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Product details
Overview
SMBG150A-M3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in 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-M3/5B datasheet, SMBG150A-M3/5B pinout, SMBG150A-M3/5B application, or SMBG150A-M3/5B equivalent, key selection criteria include clamping performance under 10/1000 μs surge, junction temperature derating above 25 °C, unidirectional polarity marking, and halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: during transients exceeding VBR, it avalanches to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at 150 V).
Thermal design relies on its RθJA = 100 °C/W (on 5.0 mm × 5.0 mm copper pads) and maximum junction temperature of +150 °C. The device sustains repetitive 10/1000 μs pulses at 0.01% duty cycle and handles non-repetitive 8.3 ms half-sine surges up to 100 A (IFSM).
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 - Ensures reliable turn-on margin above VWM with tight tolerance |
| VC @ IPPM | 243 V at 2.5 A - Clamping voltage limits protected circuit stress during 10/1000 μs surge |
| PPPM | 600 W - Peak pulse power rating defines maximum transient energy absorption capability |
| IFSM | 100 A - Single 8.3 ms half-sine surge current rating for inductive load switching events |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures |
| Leakage @ VWM | ≤1.0 μA - Minimal standby power loss and negligible impact on high-impedance sensor bias networks |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile gull-wing leadframe with matte tin-plated terminals. Cathode indicated by band; polarity critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction; connected to protected line's ground reference | Provides return path for clamped surge current; must be routed to low-impedance ground plane |
| Cathode | Current exit during avalanche clamping; connected to protected line's positive rail or signal | Acts as high-impedance input until VBR; band-marked end ensures correct PCB orientation |
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 for industrial and automotive supply chains without compromising thermal or electrical performance |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 4 surges when properly laid out |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD, relay bounce) |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Shunt TVS placed between power rail and chassis ground to clamp surges before they reach DC-DC converters or microcontrollers. Use Value: Withstands 600 W pulses and clamps to 243 V, limiting stress on downstream 36 V-rated input stages while maintaining AEC-Q101 reliability. | Use Scenario: Safeguarding analog outputs of pressure or temperature sensors exposed to cable-induced surges in factory automation. IC Role / Device Role / Timing Role: Unidirectional TVS on sensor output line referenced to system ground, absorbing induced spikes from nearby motor drives. Use Value: ≤1.0 μA leakage preserves sensor accuracy; 243 V clamping prevents op-amp saturation or ADC overrange during 1 kV/500 A transients. |
| Telecom Line Card Surge Suppression | Consumer Power Adapter Input Protection |
Use Scenario: Front-end protection for PoE-powered Ethernet switches subjected to lightning-induced surges on data lines. IC Role / Device Role / Timing Role: Paired unidirectional TVS on each DC feed line (e.g., +48 V and return), coordinated with common-mode chokes. Use Value: 150 V VWM allows normal operation across PoE voltage range; 243 V clamping aligns with IEEE 802.3bt surge immunity targets. | Use Scenario: Secondary-side overvoltage clamp in AC/DC adapters after rectification, guarding against transformer flyback spikes. IC Role / Device Role / Timing Role: Unidirectional TVS across bulk capacitor terminals to absorb residual switching transients not filtered by LC stages. Use Value: 600 W rating handles repetitive flyback energy; halogen-free M3 suffix supports global regulatory compliance for consumer goods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG150A-E3/5B | Same electrical specs; RoHS-compliant but contains brominated flame retardants (non-halogen-free) | Acceptable for industrial use where halogen-free is not mandated | Select SMBG150A-E3/5B if halogen-free requirement is waived and cost optimization is prioritized |
| SMBG150AHM3/5B | Identical specs plus AEC-Q101 qualification explicitly stated in part number (HM3 suffix) | Required for automotive OEM designs needing documented qualification evidence beyond base M3 | Choose SMBG150AHM3/5B when formal AEC-Q101 documentation traceability is contractually required |
Compared with SMBG150A-M3/5B, the E3 variant trades halogen-free status for lower cost in non-automotive settings, while the HM3 variant adds auditable AEC-Q101 certification overhead for Tier 1 automotive BOMs-neither is pin-compatible in the sense of guaranteed interchangeability without review of qualification scope and material declarations.
Availability
SMBG150A-M3/5B is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom line card surge suppression requiring stable component supply, halogen-free compliance, and AEC-Q101 reliability assurance.
Supply support for SMBG150A-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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The SMBG series is engineered for surface-mount transient suppression in harsh environments, targeting applications demanding high surge robustness, low leakage, and qualification to AEC-Q101 and industry safety standards.
FAQ
What is the clamping voltage of SMBG150A-M3/5B and how is it measured?
The SMBG150A-M3/5B has a maximum clamping voltage (VC) of 243 V, measured at a peak pulse current (IPPM) of 2.5 A using a 10/1000 μs waveform. This value reflects the voltage across the device during standardized surge testing and defines the upper limit of stress imposed on protected circuitry when the SMBG150A-M3/5B activates.
Is SMBG150A-M3/5B suitable for automotive applications?
Yes, SMBG150A-M3/5B is AEC-Q101 qualified and rated for operation from –55 °C to +150 °C, making it suitable for under-hood and body-control module applications. Its glass-passivated junction, low leakage, and 600 W surge capability meet automotive transient immunity requirements such as ISO 7637-2 and ISO 16750-2.
What does the "M3" suffix indicate in SMBG150A-M3/5B?
The "M3" suffix in SMBG150A-M3/5B denotes halogen-free, RoHS-compliant construction meeting JEDEC J-STD-201 Class 2 whisker resistance, alongside industrial-grade reliability. It distinguishes the part from E3 (RoHS but not halogen-free) and HM3 (AEC-Q101 qualified with halogen-free materials).
How does SMBG150A-M3/5B differ from bidirectional TVS diodes like SMBG150CA?
SMBG150A-M3/5B is unidirectional and features polarity marking (cathode band); it conducts only in reverse avalanche and blocks forward current. In contrast, SMBG150CA is bidirectional with symmetrical clamping in both directions and no polarity marking-making it suitable for AC signal lines or differential buses where polarity reversal occurs.
What PCB layout considerations apply to SMBG150A-M3/5B for optimal surge performance?
For optimal performance, SMBG150A-M3/5B must be mounted on minimum 5.0 mm × 5.0 mm copper pads per terminal to achieve specified thermal resistance (RθJA = 100 °C/W) and surge current handling. Short, low-inductance traces to ground and minimized loop area between anode/cathode paths are essential to reduce voltage overshoot during fast transients.
SMBG150A-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):
- 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-M3/5B FAQ
1.How can I place an order for SMBG150A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG150A-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 SMBG150A-M3/5B reliable?
The price and inventory of SMBG150A-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 SMBG150A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG150A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG150A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG150A-M3/5B?
SMBG150A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG150A-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 SMBG150A-M3/5B?
For technical support, including SMBG150A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG150A-M3/5B requirements.
6.How does Aetrix verify that SMBG150A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG150A-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 SMBG150A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG150A-M3/5B?
All SMBG150A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG150A-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 SMBG150A-M3/5B part is unused and in its original packaging.
Return procedure for SMBG150A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG150A-M3/5B Tags
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