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Vishay General Semiconductor - Diodes Division SMBG15CA-M3/5B
- Part No.:
- SMBG15CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG15CA-M3/5B.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,170
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Product details
Overview
SMBG15CA-M3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping voltage transients on signal and power lines. It features 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 24.4 V maximum clamping voltage (VC) at 24.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect automotive sensor interfaces and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the SMBG15CA-M3/5B datasheet, SMBG15CA-M3/5B pinout, SMBG15CA-M3/5B application, or SMBG15CA-M3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: during overvoltage events exceeding VWM = 15 V, it avalanches symmetrically in both directions to limit transient voltage to ≤24.4 V at 24.6 A. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the SMBG package provides thermal resistance of RθJA = 100 °C/W and RθJL = 20 °C/W under standard mounting conditions.
Designed for repetitive surge duty cycle ≤0.01 %, SMBG15CA-M3/5B supports operation from −55 °C to +150 °C junction temperature and meets J-STD-020 MSL Level 1 (peak reflow ≤260 °C). It is qualified to AEC-Q101 and rated for UL 497B recognition (file E136766) for telecom and automotive protection applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse working voltage before clamping initiates |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - Ensures reliable avalanche turn-on within defined tolerance band |
| VC @ IPPM | 24.4 V at 24.6 A - Clamped voltage during 10/1000 μs surge, defining protected circuit stress level |
| PPPM | 600 W - Peak pulse power handling capacity, derated above 25 °C per Fig. 2 |
| IPPM | 24.6 A - Maximum non-repetitive surge current supported with 10/1000 μs waveform |
| TJ max | +150 °C - Enables use in under-hood automotive and high-temperature industrial environments |
| Package | SMBG (DO-215AA) - Surface-mount outline with 0.235" × 0.255" footprint and gull-wing leads |
Pinout & Package
SMBG15CA-M3/5B uses a two-terminal SMBG (DO-215AA) package with no polarity marking - consistent with bidirectional functionality. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output; clamping occurs identically in both directions |
| Case (body) | Thermal and mechanical interface | Non-conductive molding compound meeting UL 94 V-0; requires 5.0 mm × 5.0 mm copper pads per terminal for rated power dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Halogen-free & RoHS compliant (M3 suffix) | Meets JEDEC JS709E and IPC-1752A material declarations; suitable for green manufacturing programs |
| 600 W peak pulse power (10/1000 μs) | Provides robust protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Combination Wave surges |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot during clamping, reducing stress on downstream ICs like CAN transceivers or ADC front-ends |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; peak temperature up to 260 °C allowed |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control units from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across sensor supply line and ground to divert transients before reaching precision amplifier or MCU ADC input. Use Value: Maintains signal integrity by limiting voltage excursions to ≤24.4 V during 100 V/50 ms load dump events, preventing latch-up or parametric drift in 3.3 V/5 V sensor signal chains. | Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to field wiring surges in factory automation. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input terminals to absorb induced lightning-induced surges from long cable runs. Use Value: Withstands ≥24.6 A surge current without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 Level 3 compliance when mounted per recommended pad layout. |
| Telecom Line Interface Protection | Consumer Power Adapter ESD Guard |
Use Scenario: Shielding RS-485 transceiver bus lines in base station backhaul equipment from EFT and surge coupling. IC Role / Device Role / Timing Role: Differential-mode TVS pair (one per line) referenced to common ground, suppressing common-mode transients up to ±1 kV. Use Value: Symmetric 15 V VWM and low capacitance (<100 pF at 0 V) preserve signal edge rate and minimize jitter on 10 Mbps differential data links. | Use Scenario: Adding secondary-level surge immunity to USB-C or barrel-jack DC inputs in smart home hubs and audio devices. IC Role / Device Role / Timing Role: Standoff-rated clamp between input rail and chassis ground, triggered only during abnormal overvoltage (e.g., hot-plug inrush or adapter fault). Use Value: Halogen-free M3 construction supports eco-label certifications (Energy Star, EPEAT), while 600 W rating handles 1.2/50 μs surges up to 400 V without failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG15CA-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3) | Lacks halogen-free certification; acceptable for industrial but not automotive or green-certified designs | Select SMBG15CA-M3/5B when halogen-free compliance is mandated by OEM or regulatory requirement |
| SMBJ15CA-T3 | Higher PPPM = 600 W same, but SMB (DO-214AA) package - larger footprint (4.58 mm × 3.94 mm vs. 6.48 mm × 5.97 mm) and higher RθJA = 110 °C/W | Less effective thermal dissipation; lower surge current density per unit area; not AEC-Q101 qualified | Choose SMBG15CA-M3/5B for space-constrained automotive PCBs requiring AEC-Q101 and superior thermal performance |
Compared with SMBG15CA-E3/5B and SMBJ15CA-T3, SMBG15CA-M3/5B uniquely combines halogen-free construction, AEC-Q101 qualification, and optimized SMBG thermal design - making it the preferred choice for next-generation automotive ECUs and industrial modules where material compliance and thermal margin are co-critical.
Availability
SMBG15CA-M3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG15CA-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, power efficiency, and automotive-grade qualification.
The SMBG series was developed specifically for high-reliability surface-mount transient suppression in automotive and industrial environments - delivering AEC-Q101 compliance, low-profile packaging, and repeatable clamping performance under harsh thermal and electrical stress.
FAQ
What is the breakdown voltage range of SMBG15CA-M3/5B?
The SMBG15CA-M3/5B has a minimum breakdown voltage (VBR) of 16.7 V and a maximum of 18.5 V at 1 mA test current, as specified in the Vishay datasheet document 88456. This tight 1.8 V window ensures predictable clamping onset and compatibility with 15 V nominal systems. The value applies bidirectionally due to its symmetrical construction.
Is SMBG15CA-M3/5B suitable for automotive applications?
Yes, SMBG15CA-M3/5B is AEC-Q101 qualified and explicitly rated for automotive use per Vishay's documentation. Its halogen-free (M3) construction, MSL Level 1 rating, and guaranteed operation from −55 °C to +150 °C make SMBG15CA-M3/5B appropriate for engine control units, body electronics, and ADAS sensor interfaces where reliability under thermal cycling and vibration is critical.
What does the "M3" suffix indicate in SMBG15CA-M3/5B?
The "M3" suffix in SMBG15CA-M3/5B denotes halogen-free, RoHS-compliant, industrial-grade construction per Vishay's ordering nomenclature. Unlike the "E3" variant, M3 meets JEDEC JS709E requirements for bromine/chlorine content <900 ppm and antimony <1000 ppm - essential for compliance with EU RoHS 2 and automotive OEM material declarations.
How is SMBG15CA-M3/5B mounted on PCBs for optimal thermal performance?
SMBG15CA-M3/5B must be mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve its rated 600 W peak pulse power and thermal resistance values. The SMBG (DO-215AA) package requires gull-wing lead soldering per J-STD-002, and the absence of polarity marking simplifies automated placement orientation during SMT assembly.
Does SMBG15CA-M3/5B have UL recognition?
Yes, SMBG15CA-M3/5B carries Underwriters Laboratories recognition under UL 497B (file E136766) for both unidirectional and bidirectional transient protectors. This certification validates its safety performance in telecom, industrial, and automotive applications involving hazardous voltage isolation and surge energy dissipation.
SMBG15CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBG15CA-M3/5B FAQ
1.How can I place an order for SMBG15CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG15CA-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 SMBG15CA-M3/5B reliable?
The price and inventory of SMBG15CA-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 SMBG15CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG15CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG15CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG15CA-M3/5B?
SMBG15CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG15CA-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 SMBG15CA-M3/5B?
For technical support, including SMBG15CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG15CA-M3/5B requirements.
6.How does Aetrix verify that SMBG15CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG15CA-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 SMBG15CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG15CA-M3/5B?
All SMBG15CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG15CA-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 SMBG15CA-M3/5B part is unused and in its original packaging.
Return procedure for SMBG15CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG15CA-M3/5B Tags
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