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Vishay General Semiconductor - Diodes Division SMBG9.0A-M3/5B
- Part No.:
- SMBG9.0A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG9.0A-M3/5B.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,798
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Product details
Overview
SMBG9.0A-M3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping fast-rising voltage transients on power and signal lines. It features 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1.0 mA test current, 15.4 V maximum clamping voltage (VC) at 39.0 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMBG9.0A-M3/5B datasheet, SMBG9.0A-M3/5B pinout, SMBG9.0A-M3/5B application, or SMBG9.0A-M3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 100 °C/W), and mounting pad layout guidance per DO-215AA mechanical drawing.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable surge response. Its low incremental surge resistance and sub-nanosecond response time enable effective suppression of ESD, lightning-induced surges, and inductive switching transients.
Rated for -55 °C to +150 °C operating junction temperature, it supports repetitive 0.01 % duty cycle pulses and meets J-STD-020 MSL Level 1 (260 °C peak reflow). The SMBG9.0A-M3/5B variant uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and passes JESD 201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse working voltage before clamping begins; sets upper limit for normal circuit operation. |
| VBR (min/max) | 10.0 V / 11.1 V at IT = 1.0 mA - Confirmed breakdown threshold range; ensures reliable turn-on during overvoltage events. |
| VC @ IPPM | 15.4 V at 39.0 A - Clamped voltage under 600 W 10/1000 μs surge; defines worst-case stress on downstream components. |
| IPPM | 39.0 A - Peak pulse current capability; determines survivability against defined transient waveforms. |
| PPPM | 600 W - Peak pulse power rating with 10/1000 μs waveform; validates energy-handling capacity for standard surge immunity tests. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on 5.0 mm × 5.0 mm copper pads; informs board-level thermal design requirements. |
| TJ max | +150 °C - Maximum junction temperature; constrains ambient and power dissipation limits in sealed enclosures. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile gull-wing leaded case with cathode band marking. Dimensions: 6.48 mm × 5.97 mm × 2.41 mm (L × W × H); 0.255" × 0.235" × 0.095". Mounting requires 5.0 mm × 5.0 mm copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection in reverse-biased clamping configuration | Connected to protected line; conducts during overvoltage to shunt surge current to ground. |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping current path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per stress test requirements. |
| Halogen-free & RoHS compliant (M3 suffix) | Meets environmental compliance mandates without compromising surge performance or solderability. |
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out with low-inductance grounding. |
| Low RθJA = 100 °C/W | Enables higher sustained surge repetition rates in thermally constrained PCB environments. |
| Glass passivated junction | Provides stable VBR tolerance and long-term parameter stability under thermal and humidity stress. |
Applications
| Automotive Power Rail 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 chassis ground to clamp positive-going surges above 9.0 V. Use Value: Limits transient voltage to ≤15.4 V during 39 A surges, preventing damage to 16 V-rated DC-DC controllers and microcontrollers. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in PLC I/O modules exposed to field wiring faults. IC Role / Device Role / Timing Role: TVS connected across signal and return lines to absorb induced surges from nearby motor drives or relay coils. Use Value: Clamps transients within nanoseconds while adding only 10 pF typical junction capacitance at zero bias, preserving signal integrity up to 1 MHz. |
| Consumer Device USB Port Protection | Telecom Line Card Surge Suppression |
Use Scenario: Secondary protection on VBUS line of USB Type-A ports in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Standoff-rated TVS positioned upstream of polyfuse and USB switch to handle ESD and hot-swap overshoot. Use Value: Withstands ±30 kV contact ESD per IEC 61000-4-2 and clamps to <16 V, protecting 5.5 V tolerant USB PHYs without affecting enumeration timing. | Use Scenario: Front-end protection on DSL or POTS line interface circuits subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Paired unidirectional SMBG9.0A-M3/5B devices used in back-to-back configuration for differential-mode clamping. Use Value: Delivers coordinated 600 W surge handling per leg with matched VBR tolerance (±5.5 %), enabling predictable cross-talk-free clamping behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A-M3/5B | Same VWM (9.0 V), but lower PPPM = 600 W (same rating), higher VC = 16.0 V at same IPPM; SMBJ has larger body (DO-214AB) and higher RθJA (110 °C/W). | Less suitable for space-constrained layouts; marginally higher clamping voltage increases stress on protected ICs. | Select SMBG9.0A-M3/5B when board area is limited and lower thermal resistance is required. |
| SMBG9.0CA-M3/5B | Bidirectional version with identical VWM (9.0 V), same VBR range (10.0–11.1 V), but symmetric clamping in both polarities; no polarity marking. | Required only where AC-coupled or bidirectional signal lines (e.g., RS-485, CAN) need protection without polarity dependency. | Choose SMBG9.0A-M3/5B for DC power rails or unidirectional signals where cathode-ground orientation simplifies layout. |
Compared with SMBJ9.0A-M3/5B, the SMBG9.0A-M3/5B offers tighter board footprint and better thermal performance; versus SMBG9.0CA-M3/5B, it provides optimized clamping for DC-biased lines with explicit polarity control - critical for minimizing leakage and ensuring deterministic turn-on behavior.
Availability
SMBG9.0A-M3/5B is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and consumer USB port surge suppression requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification.
Supply support for SMBG9.0A-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBG series was developed for high-reliability surface-mount transient suppression in space-constrained, thermally demanding environments - particularly targeting automotive, industrial, and telecom infrastructure where AEC-Q101 validation and consistent clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of SMBG9.0A-M3/5B under rated surge conditions?
The SMBG9.0A-M3/5B exhibits a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current of 39.0 A using the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88456 and defines the upper voltage limit imposed on protected circuitry during transient events. Designers must ensure downstream components tolerate this clamped level under worst-case surge conditions.
Is SMBG9.0A-M3/5B suitable for automotive applications?
Yes, SMBG9.0A-M3/5B is AEC-Q101 qualified per Vishay documentation, confirming its suitability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. Its construction - glass-passivated junction, halogen-free M3 suffix, MSL Level 1 reflow compatibility, and -55 °C to +150 °C operating range - meets stringent automotive reliability and process requirements. The SMBG9.0A-M3/5B is explicitly listed in Vishay's AEC-Q101 qualified product table.
How does the M3 suffix affect the SMBG9.0A-M3/5B specification?
The M3 suffix on SMBG9.0A-M3/5B indicates halogen-free, RoHS-compliant construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 22-B102 solder heat resistance standards. It also confirms compliance with JESD 201 Class 2 whisker testing. Unlike E3 variants, M3 ensures full halogen-free material content without altering electrical parameters - all ratings (VWM, VBR, VC, PPPM) remain identical to non-M3 versions of SMBG9.0A.
What is the thermal resistance of SMBG9.0A-M3/5B, and how should it be applied in layout?
The SMBG9.0A-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay document 88456. To achieve this rating, designers must implement minimum pad dimensions, avoid thermal isolation, and consider internal copper layers for enhanced heat spreading. Exceeding 150 °C junction temperature risks parametric shift or failure during repetitive surge events.
Does SMBG9.0A-M3/5B have polarity marking, and how is it oriented in circuit?
Yes, SMBG9.0A-M3/5B is a unidirectional TVS diode with a visible cathode band marking on the SMBG (DO-215AA) package body. During normal operation, the cathode connects to the line being protected (e.g., 12 V rail), and the anode connects to ground. This orientation ensures reverse-bias operation - allowing the device to remain non-conductive below VWM = 9.0 V and clamp rapidly above VBR during overvoltage events. Incorrect polarity results in forward conduction and potential failure.
SMBG9.0A-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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 39A
- 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)
SMBG9.0A-M3/5B FAQ
1.How can I place an order for SMBG9.0A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG9.0A-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 SMBG9.0A-M3/5B reliable?
The price and inventory of SMBG9.0A-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 SMBG9.0A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG9.0A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG9.0A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG9.0A-M3/5B?
SMBG9.0A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG9.0A-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 SMBG9.0A-M3/5B?
For technical support, including SMBG9.0A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG9.0A-M3/5B requirements.
6.How does Aetrix verify that SMBG9.0A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG9.0A-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 SMBG9.0A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG9.0A-M3/5B?
All SMBG9.0A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG9.0A-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 SMBG9.0A-M3/5B part is unused and in its original packaging.
Return procedure for SMBG9.0A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG9.0A-M3/5B Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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