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Vishay General Semiconductor - Diodes Division SMBG24A-M3/52
- Part No.:
- SMBG24A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG24A-M3/52.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,269
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Product details
Overview
SMBG24A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMBG (DO-215AA) package, with 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 38.9 V maximum clamping voltage (VC) at 15.4 A peak pulse current, and 600 W peak pulse power rating under 10/1000 μs waveform - deployed for overvoltage protection of automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the SMBG24A-M3/52 datasheet, SMBG24A-M3/52 pinout, SMBG24A-M3/52 application, or SMBG24A-M3/52 equivalent, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, junction temperature derating above 25 °C, unidirectional polarity alignment with DC-biased circuits, and halogen-free RoHS compliance required for automotive Tier-1 supply chains.
Technical Context
This TVS diode operates as a shunt-clamping device that remains high-impedance below VWM = 24 V and rapidly transitions to low-impedance conduction once transient voltage exceeds VBR = 26.7–29.5 V, limiting downstream voltage to ≤38.9 V at 15.4 A. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and repeatable breakdown behavior across temperature.
Designed for 10/1000 μs surge waveforms per ANSI/IEEE C62.35, it delivers 600 W peak pulse power with 0.01 % duty cycle, supports 100 A non-repetitive forward surge (8.3 ms half-sine), and maintains operation from −55 °C to +150 °C junction temperature - meeting AEC-Q101 qualification for automotive under-hood use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected circuit's normal DC bias. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering without premature conduction during transients. |
| VC @ IPPM | 38.9 V at 15.4 A - Clamped voltage seen by downstream IC during worst-case 10/1000 μs surge; must stay below IC's absolute max rating. |
| PPPM | 600 W - Peak transient energy absorption capacity; defines survivability against lightning-induced or inductive-switching surges. |
| IFSM | 100 A - Single 8.3 ms half-sine surge current rating; validates robustness against motor driver or relay coil turn-off spikes. |
| TJ max | +150 °C - Maximum junction temperature; enables placement near heat sources in engine control units or power modules. |
| Package | SMBG (DO-215AA) - Surface-mount outline with 0.235–0.255" body length; compatible with automated pick-and-place and reflow profiles up to 260 °C peak. |
Pinout & Package
SMBG24A-M3/52 uses the SMBG (DO-215AA) package: a low-profile, gull-wing surface-mount case with two terminals, matte tin-plated leads solderable per J-STD-002, and cathode identified by a band on the marked end. Molding compound meets UL 94 V-0; M3 suffix denotes halogen-free, RoHS-compliant industrial-grade construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or lower-potential rail in unidirectional clamp configuration; enables low-VF path during surge. |
| Cathode | Current exit point during forward conduction; marked end | Connected to protected line (e.g., CAN_H, LIN, sensor output); defines polarity-sensitive placement on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces per stress test requirements. |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 Level 3 surges without degradation when mounted per recommended pad layout. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets automotive OEM material restrictions (e.g., GMW3172, Ford WSS-M99P9999-A1) and supports lead-free reflow assembly. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD >15 kV contact discharge), improving protection margin for 3.3 V/5 V logic. |
| MSL Level 1 (260 °C peak) | Enables single-pass reflow without moisture sensitivity concerns; eliminates bake-out requirement in high-volume SMT lines. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between sensor output and ground, triggered only during overvoltage events. Use Value: Limits transient voltage to ≤38.9 V, preserving ADC input integrity and preventing latch-up in microcontroller front-end circuitry. | Use Scenario: Safeguarding RS-485 transceiver data lines in factory automation PLCs subjected to inductive switching noise from solenoids and motors. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to local ground, absorbing common-mode surges coupled onto differential bus lines. Use Value: Maintains signal integrity during 600 W surges while adding <1 pF capacitance - no data rate degradation at 10 Mbps. |
| Power Supply Input Protection | Consumer Device USB Port |
Use Scenario: Secondary overvoltage protection on 24 V DC input rails of industrial HMIs after primary DC-DC converter stage. IC Role / Device Role / Timing Role: Standby-mode TVS holding off 24 V nominal, clamping to 38.9 V during 100 V/10 ms load-dump transients. Use Value: Prevents damage to downstream LDOs and PMICs rated for 40 V max input, extending system field life. | Use Scenario: ESD and surge suppression on VBUS line of USB 2.0 ports in smart home hubs exposed to human-body-model discharges. IC Role / Device Role / Timing Role: Fast-response unidirectional suppressor placed between USB connector and power switch IC. Use Value: Clamps 15 kV HBM ESD pulses within <1 ns, limiting voltage excursion to safe levels for USB controller ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG24AHM3/52 | AEC-Q101 qualified; identical electrical specs and SMBG package; HM3 suffix adds automotive qualification to M3 base. | Required for Tier-1 automotive designs where AEC-Q101 certification is mandatory (e.g., infotainment, ADAS). | Select SMBG24AHM3/52 when full AEC-Q101 documentation and traceability are contractually required. |
| SMAJ24A-M3 | Same VWM/VC, but SMA (DO-214AC) package; 400 W PPPM; higher RθJA (140 °C/W vs. 100 °C/W). | Suitable for space-constrained consumer boards where 600 W rating is not needed and thermal budget allows higher junction rise. | Choose SMAJ24A-M3 only if board layout lacks space for SMBG footprint and surge threat level is ≤400 W. |
Compared with SMBG24A-M3/52, SMBG24AHM3/52 adds verified AEC-Q101 compliance without electrical or mechanical trade-offs, while SMAJ24A-M3 reduces surge capability and thermal performance in exchange for smaller footprint - making SMBG24A-M3/52 the optimal balance of power handling, thermal efficiency, and industrial-grade compliance.
Availability
SMBG24A-M3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and power supply input surge suppression requiring stable component supply, halogen-free compliance, and AEC-Q101-aligned reliability.
Supply support for SMBG24A-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, MOSFETs, and protection devices with emphasis on high-reliability, automotive-qualified, and industry-standard solutions.
The SMBG Transient Voltage Suppressor family targets high-energy surge protection in space-constrained, thermally demanding environments - engineered specifically for automotive, industrial, and telecom systems requiring robust, standardized, and AEC-Q101-ready TVS components.
FAQ
What is the clamping voltage of SMBG24A-M3/52 at its rated peak pulse current?
The SMBG24A-M3/52 has a maximum clamping voltage (VC) of 38.9 V at its rated peak pulse current (IPPM) of 15.4 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024. The SMBG24A-M3/52 achieves this clamping performance while maintaining low incremental surge resistance, ensuring predictable protection behavior across temperature and aging conditions.
Is SMBG24A-M3/52 suitable for automotive applications?
Yes, SMBG24A-M3/52 is halogen-free, RoHS-compliant, and meets MSL Level 1 - but it is not AEC-Q101 qualified. For automotive use, Vishay offers SMBG24AHM3/52, which shares identical electrical and mechanical specs but carries full AEC-Q101 qualification. The SMBG24A-M3/52 itself is rated for industrial-grade operation from −55 °C to +150 °C and is commonly used in non-safety-critical automotive subsystems where formal qualification is not mandated.
What does the "M3" suffix mean in SMBG24A-M3/52?
The "M3" suffix in SMBG24A-M3/52 indicates halogen-free, RoHS-compliant construction with industrial-grade reliability and JESD 201 Class 2 whisker resistance. It distinguishes the part from "E3" (standard RoHS) and "HM3" (AEC-Q101 qualified + halogen-free) variants. All M3 parts use matte tin-plated leads, meet UL 94 V-0 flammability, and support peak reflow temperatures up to 260 °C - critical for lead-free manufacturing of SMBG24A-M3/52.
How does SMBG24A-M3/52 differ from bidirectional TVS diodes like SMBG24CA?
SMBG24A-M3/52 is unidirectional and features polarity-sensitive mounting (cathode band), conducting only in reverse breakdown to clamp positive transients to ground. In contrast, SMBG24CA is bidirectional, symmetrically clamping both positive and negative excursions - used where AC-coupled or floating lines require protection in both directions. The SMBG24A-M3/52 offers lower leakage (<1.0 μA at 24 V) and is preferred for DC-biased signal paths like sensor outputs or power rails.
What is the thermal resistance of SMBG24A-M3/52, and how does it affect layout?
SMBG24A-M3/52 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. This value assumes minimum recommended pad layout per Vishay's datasheet. To maintain TJ ≤150 °C under repetitive surges, PCB layout must allocate adequate copper area and avoid thermal bottlenecks - undersized pads will raise RθJA and risk thermal runaway during sustained transient activity involving SMBG24A-M3/52.
SMBG24A-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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 15.4A
- 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)
SMBG24A-M3/52 FAQ
1.How can I place an order for SMBG24A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG24A-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 SMBG24A-M3/52 reliable?
The price and inventory of SMBG24A-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 SMBG24A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBG24A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG24A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG24A-M3/52?
SMBG24A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG24A-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 SMBG24A-M3/52?
For technical support, including SMBG24A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG24A-M3/52 requirements.
6.How does Aetrix verify that SMBG24A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG24A-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 SMBG24A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBG24A-M3/52?
All SMBG24A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG24A-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 SMBG24A-M3/52 part is unused and in its original packaging.
Return procedure for SMBG24A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG24A-M3/52 Tags
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