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Vishay General Semiconductor - Diodes Division SMBG30A-M3/52
- Part No.:
- SMBG30A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG30A-M3/52.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,101
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Product details
Overview
SMBG30A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMBG (DO-215AA) package, with 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR) at 1 mA, 48.4 V clamping voltage (VC) at 12.4 A peak pulse current, and 600 W peak pulse power rating under 10/1000 μs waveform - designed for robust overvoltage protection of DC power rails and signal lines in automotive ECUs and industrial control modules.
For engineers reviewing the SMBG30A-M3/52 datasheet, SMBG30A-M3/52 pinout, SMBG30A-M3/52 application, or SMBG30A-M3/52 equivalent, key selection considerations include its AEC-Q101 qualification, halogen-free RoHS-compliant M3 suffix, 150 °C max junction temperature, low 1.0 μA reverse leakage at VWM, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging an avalanche breakdown mechanism to limit transient voltages above its VBR threshold while maintaining low dynamic impedance during surge events. Its glass-passivated junction ensures stable electrical characteristics and long-term reliability under repetitive surge stress.
The SMBG30A-M3/52 delivers 600 W peak pulse power handling with a 10/1000 μs waveform at 0.01 % duty cycle, supported by thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling effective heat dissipation when mounted on 5.0 mm × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC rail voltage margin |
| VBR @ IT = 1 mA | 33.3–36.8 V - guaranteed avalanche onset range; ensures consistent turn-on across production lots |
| VC @ IPPM = 12.4 A | 48.4 V - clamped voltage during 10/1000 μs surge; determines protected circuit's maximum transient exposure |
| PPPM | 600 W - peak pulse power capability; validates suitability for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3/4 transients |
| IFSM | 100 A - 8.3 ms half-sine surge rating; supports high-energy inductive switch-off events in automotive power circuits |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments |
| Leakage @ VWM | ≤1.0 μA - ultra-low reverse leakage; minimizes standby power loss in battery-critical systems |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band; meets UL 94 V-0 flammability rating and MSL level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or lower-potential node; completes clamping path during positive transients |
| Cathode | High-side connection point | Connected to protected line (e.g., 24 V rail); carries surge current into ground via anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Halogen-free & RoHS compliant (M3 suffix) | Meets JEDEC JESD201 Class 2 whisker resistance and global environmental compliance requirements |
| 600 W peak pulse power (10/1000 μs) | Provides robust protection against load dump, inductive kickback, and ESD-induced surges in harsh environments |
| Fast response time & low clamping ratio | Sub-nanosecond turn-on and VC/VBR ≈ 1.45 ensure minimal overshoot and reliable IC-level protection |
| Glass passivated junction | Enhances moisture resistance and long-term parameter stability under thermal and humidity stress |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) against ISO 7637-2 load dump pulses and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and downstream DC/DC converter input. Use Value: Limits transient voltage to ≤48.4 V, preventing damage to 36 V-rated input stages while supporting 100 A surge current capability. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC analog input modules. IC Role / Device Role / Timing Role: Point-of-entry TVS on twisted-pair signal lines exposed to field wiring transients and EFT bursts. Use Value: Clamps fast-rising transients (<1 ns rise time) with <1.0 μA leakage, preserving signal integrity and measurement accuracy. |
| Telecom DC Feeder Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding 48 V DC power feeds in remote radio head (RRH) base stations from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary overvoltage suppressor on input side of telecom rectifier module. Use Value: Withstands repeated 600 W surges and maintains stable VBR across -55 °C to +150 °C ambient range. | Use Scenario: Suppressing inductive spikes generated by brushed DC motor commutation in smart home appliances. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; this unidirectional part protects low-side MOSFET source nodes tied to ground-referenced logic. Use Value: Enables compact layout with SMBG footprint and eliminates need for external series impedance due to low dynamic impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG30A-E3/52 | Same electrical specs; uses standard RoHS-compliant (non-halogen-free) molding compound | Approved for industrial but not automotive AEC-Q101 applications | Select when halogen-free requirement is not mandated and cost optimization is prioritized |
| SMBG30AHM3/52 | Identical electrical and thermal specs; adds AEC-Q101 qualification and halogen-free construction | Qualified for automotive safety-critical subsystems (e.g., ADAS power domains) | Select when full automotive qualification and halogen-free compliance are mandatory |
Compared with SMBG30A-M3/52, SMBG30A-E3/52 lacks halogen-free certification and AEC-Q101 validation, while SMBG30AHM3/52 provides identical performance with extended automotive qualification - making the M3 version the optimal balance of automotive readiness and environmental compliance for Tier 1 supplier BOMs.
Availability
SMBG30A-M3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for SMBG30A-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 reliability, efficiency, and application-specific optimization.
The SMBG Transient Voltage Suppressor family is engineered for high-energy surge immunity in space-constrained, high-reliability applications - particularly targeting automotive, industrial, and telecom systems where AEC-Q101 qualification and repeatable clamping performance are essential.
FAQ
What is the clamping voltage of SMBG30A-M3/52 at its rated peak pulse current?
The SMBG30A-M3/52 has a maximum clamping voltage (VC) of 48.4 V at 12.4 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88456 and defines the upper voltage limit imposed on protected circuits during surge events. The SMBG30A-M3/52 maintains this clamping performance across its full operating temperature range.
Is SMBG30A-M3/52 suitable for automotive applications?
Yes, SMBG30A-M3/52 is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and infotainment power supplies. Its halogen-free (M3) construction, 150 °C max junction temperature, and validated performance under ISO 7637-2 transients make it appropriate for under-hood and cabin environments. The SMBG30A-M3/52 meets all required stress tests per the AEC-Q101 standard.
What does the "M3" suffix indicate in SMBG30A-M3/52?
The "M3" suffix in SMBG30A-M3/52 denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance, intended for industrial-grade applications requiring enhanced environmental compliance. It distinguishes the part from E3 (standard RoHS) and HM3 (AEC-Q101 + halogen-free) variants. The SMBG30A-M3/52 shares identical electrical and thermal specifications with other SMBG30A variants except for material composition and qualification scope.
What is the reverse leakage current of SMBG30A-M3/52 at its stand-off voltage?
The SMBG30A-M3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 30 V stand-off voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage minimizes quiescent power draw in battery-powered or energy-sensitive systems. The SMBG30A-M3/52 maintains leakage below 10 μA up to 125 °C, as confirmed in Vishay's thermal derating curves.
How is SMBG30A-M3/52 packaged for automated assembly?
SMBG30A-M3/52 is supplied in 7" diameter plastic tape and reel packaging (package code /52), with 750 units per reel, optimized for high-speed pick-and-place equipment. Its SMBG (DO-215AA) low-profile package features gull-wing leads and matte tin plating compliant with J-STD-002 and JESD 22-B102 solderability standards. The SMBG30A-M3/52's standardized footprint supports IPC-7351B land patterns for reliable reflow yield.
SMBG30A-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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 12.4A
- 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)
SMBG30A-M3/52 FAQ
1.How can I place an order for SMBG30A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG30A-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 SMBG30A-M3/52 reliable?
The price and inventory of SMBG30A-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 SMBG30A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBG30A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG30A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG30A-M3/52?
SMBG30A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG30A-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 SMBG30A-M3/52?
For technical support, including SMBG30A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG30A-M3/52 requirements.
6.How does Aetrix verify that SMBG30A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG30A-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 SMBG30A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBG30A-M3/52?
All SMBG30A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG30A-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 SMBG30A-M3/52 part is unused and in its original packaging.
Return procedure for SMBG30A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG30A-M3/52 Tags
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