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Vishay General Semiconductor - Diodes Division SMBG15A-M3/52
- Part No.:
- SMBG15A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG15A-M3/52.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,008
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Product details
Overview
SMBG15A-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 sensitive electronics. It features a 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 24.4 V clamping voltage (VC) at 24.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the SMBG15A-M3/52 datasheet, SMBG15A-M3/52 pinout, SMBG15A-M3/52 application, or SMBG15A-M3/52 equivalent, key selection considerations include unidirectional polarity, AEC-Q101 qualification, halogen-free RoHS compliance (M3 suffix), 150 °C max junction temperature, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, responding to transients within picoseconds by entering avalanche conduction when reverse voltage exceeds VBR. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) and low incremental surge resistance, enabling precise voltage limiting during ESD or load-switching events.
The SMBG15A-M3/52 is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports MSL Level 1 moisture sensitivity, and maintains thermal resistance of 20 °C/W junction-to-lead - critical for sustained surge handling in compact PCB layouts without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - guaranteed avalanche initiation range; ensures consistent turn-on across production lots and temperature. |
| VC @ IPPM | 24.4 V at 24.6 A - clamped voltage during 600 W transient; limits stress on downstream ICs like CAN transceivers or microcontrollers. |
| PPPM | 600 W - peak pulse power with 10/1000 μs waveform; validates protection against IEC 61000-4-5 Level 4 surges. |
| IFSM | 100 A - single half-sine surge rating (8.3 ms); supports protection against inductive kickback in relay or solenoid drivers. |
| TJ max | +150 °C - maximum junction temperature; enables reliable operation in under-hood automotive environments. |
| Package | SMBG (DO-215AA) - surface-mount, low-profile case with matte tin-plated leads; compatible with J-STD-002 solderability standards. |
Pinout & Package
SMBG15A-M3/52 uses the SMBG (DO-215AA) package: a 2-terminal, unidirectional surface-mount device with cathode band marking. The package measures 4.57 mm × 3.94 mm × 2.10 mm (L × W × H), features gull-wing leads, and mounts on 5.0 mm × 5.0 mm copper pads per terminal per Vishay's recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to system ground or return path; completes clamping loop during transient events. |
| Cathode | Protected line interface | Connected to signal/power line being protected; band-marked end indicates polarity for correct orientation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, mechanical shock, and humidity testing - suitable for engine control and ADAS sensor modules. |
| Halogen-free & RoHS compliant (M3) | Meets JEDEC JESD201 Class 2 whisker resistance and global environmental regulations - required for Tier 1 automotive supply chain compliance. |
| 600 W peak pulse power (10/1000 μs) | Provides immunity against high-energy transients such as ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Combination Wave surges. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage overshoot during clamping - preserves timing margins and logic integrity in high-speed digital interfaces. |
| MSL Level 1, 260 °C reflow compatible | Enables standard lead-free reflow assembly without pre-baking; reduces manufacturing complexity and cost in high-volume SMT lines. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) from load-dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Parallel-connected clamping element that diverts surge current away from precision ADC inputs or LIN transceivers. Use Value: Maintains signal integrity below 24.4 V clamp during 100 V/500 ms load dump events, preventing latch-up or damage to 3.3 V/5 V domain ICs. | Use Scenario: Safeguarding PLC digital input channels exposed to field wiring transients from motor drives or solenoids. IC Role / Device Role / Timing Role: Standoff protector placed between field-side optocoupler input and 24 V supply rail. Use Value: Limits induced voltage spikes to ≤24.4 V during 1 kV/500 A surge tests, ensuring optocoupler CTR stability and long-term isolation barrier integrity. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters subject to capacitor discharge and hot-plug transients. IC Role / Device Role / Timing Role: Fast-acting shunt device across DC output rails (e.g., 15 V bias for controller ICs). Use Value: Clamps 600 W surges within <1 ns, preventing overvoltage shutdown or gate oxide damage in synchronous rectifier MOSFETs. | Use Scenario: Front-end protection for Ethernet PHY power rails (e.g., 3.3 V bias) in network switches exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on PHY supply pins, coordinated with upstream gas discharge tubes. Use Value: Provides low-clamp, low-capacitance (<50 pF) protection aligned with IEEE 802.3bt surge requirements without degrading signal rise time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG15A-E3/52 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3 suffix). | Acceptable for industrial but not automotive programs requiring halogen-free materials. | Select SMBG15A-M3/52 when AEC-Q101 + halogen-free compliance is mandatory; choose E3 variant for cost-sensitive non-automotive designs. |
| SMBJ15A-M3/52 | Same VWM/VC, but SMBJ package (DO-214AB) has higher RθJA (120 °C/W vs. 100 °C/W) and lower IPPM (23.3 A vs. 24.6 A). | Suitable for less thermally constrained boards where footprint flexibility is prioritized over peak surge margin. | Prefer SMBG15A-M3/52 for space-constrained automotive modules needing optimal thermal dissipation; SMBJ15A-M3/52 fits legacy DO-214AB footprints. |
Compared with SMBG15A-E3/52, the M3 version adds halogen-free compliance for automotive use; versus SMBJ15A-M3/52, it delivers 5.6% higher peak surge current and better thermal performance in a smaller footprint - making SMBG15A-M3/52 optimal for next-gen compact, AEC-Q101–certified designs.
Availability
SMBG15A-M3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line card protection requiring stable component supply, AEC-Q101 qualification, and halogen-free compliance.
Supply support for SMBG15A-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 reliability, efficiency, and application-specific validation.
The SMBG series was engineered for high-reliability surface-mount transient suppression in automotive and industrial environments - balancing low clamping voltage, high surge capability, and stringent process control for mission-critical signal integrity.
FAQ
What is the breakdown voltage range for SMBG15A-M3/52?
The SMBG15A-M3/52 has a guaranteed breakdown voltage (VBR) range of 16.7 V to 18.5 V at 1 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures predictable clamping onset across temperature and production lots, directly supporting design margin verification for 12 V automotive systems where SMBG15A-M3/52 is commonly applied.
Is SMBG15A-M3/52 suitable for automotive applications?
Yes, SMBG15A-M3/52 is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials (M3 suffix). It meets automotive requirements for temperature cycling, mechanical shock, and surge immunity - validated for use in engine control units, body electronics, and ADAS sensor interfaces where SMBG15A-M3/52 provides certified overvoltage protection.
What does the "M3" suffix indicate in SMBG15A-M3/52?
The "M3" suffix in SMBG15A-M3/52 denotes halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance, distinguishing it from the E3 variant. This specification is mandatory for automotive Tier 1 suppliers and aligns with global environmental directives - a defining feature of SMBG15A-M3/52 in regulated markets.
What is the maximum clamping voltage of SMBG15A-M3/52 during a 600 W transient?
The SMBG15A-M3/52 clamps to a maximum of 24.4 V at its rated peak pulse current of 24.6 A (10/1000 μs waveform). This value is measured under standardized conditions per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuitry - a critical parameter for ensuring downstream ICs like SMBG15A-M3/52-protected CAN transceivers remain within absolute maximum ratings.
Can SMBG15A-M3/52 be used in bidirectional configurations?
No, SMBG15A-M3/52 is a unidirectional TVS diode, indicated by the "A" (not "CA") suffix and cathode band marking. For bidirectional protection, Vishay specifies variants with "CA" suffix (e.g., SMBG15CA); using SMBG15A-M3/52 in reverse-biased AC applications would result in forward conduction and failure - confirming SMBG15A-M3/52's strict unidirectional role.
SMBG15A-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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 24.6A
- 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)
SMBG15A-M3/52 FAQ
1.How can I place an order for SMBG15A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG15A-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 SMBG15A-M3/52 reliable?
The price and inventory of SMBG15A-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 SMBG15A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBG15A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG15A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG15A-M3/52?
SMBG15A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG15A-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 SMBG15A-M3/52?
For technical support, including SMBG15A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG15A-M3/52 requirements.
6.How does Aetrix verify that SMBG15A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG15A-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 SMBG15A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBG15A-M3/52?
All SMBG15A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG15A-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 SMBG15A-M3/52 part is unused and in its original packaging.
Return procedure for SMBG15A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG15A-M3/52 Tags
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