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Vishay General Semiconductor - Diodes Division SMBG36CA-M3/52
- Part No.:
- SMBG36CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG36CA-M3/52.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,200
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Product details
Overview
SMBG36CA-M3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping voltage transients on signal or power lines. It features a 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), 10.3 A peak pulse current (IPPM), and clamps to ≤58.1 V at IPPM, protecting automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the SMBG36CA-M3/52 datasheet, SMBG36CA-M3/52 pinout, SMBG36CA-M3/52 application, or SMBG36CA-M3/52 equivalent, key selection criteria include bidirectional clamping capability, 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 device operates as a voltage-clamped surge protector using an avalanche breakdown mechanism, with symmetrical forward/reverse conduction enabling bidirectional transient suppression without polarity sensitivity. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns), while low incremental surge resistance minimizes clamping overshoot during high-current transients.
The SMBG36CA-M3/52 is rated for repetitive 10/1000 µs waveform surges at 0.01% duty cycle and derates linearly above 25 °C ambient per Fig. 2. Thermal resistance is 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting reliable operation under sustained surge conditions when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected line. |
| VBR (min/max) | 40.0 V / 44.2 V at 1 mA - Ensures consistent avalanche initiation across production lots; guarantees clamping starts no later than 44.2 V. |
| IPPM | 10.3 A - Peak surge current it safely shunts during 10/1000 µs transient; determines minimum trace width and PCB copper area needed. |
| VC @ IPPM | ≤58.1 V - Clamped voltage seen by downstream IC; must be below protected device's absolute maximum rating. |
| PPPM | 600 W - Peak pulse power handling capacity; validates robustness against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and high-temperature industrial enclosures. |
| Package | SMBG (DO-215AA) - Surface-mount package with 2.10 mm × 1.96 mm body, optimized for high-density layouts and reflow compatibility. |
Pinout & Package
Two-terminal bidirectional device in SMBG (DO-215AA) package; no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, with MSL Level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Both terminals function identically; connects across protected line (e.g., CAN_H–CAN_L or RS-485 A–B) without orientation concern. |
| Case (body) | Thermal and mechanical interface | Non-electrical; transfers heat to PCB copper pads; requires 5.0 mm × 5.0 mm minimum pad per terminal per datasheet Fig. 2. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails. |
| Halogen-free & RoHS compliant (M3) | Meets environmental compliance requirements for global OEM supply chains and industrial safety standards. |
| 600 W peak pulse power (10/1000 µs) | Withstands severe transients such as load dump spikes and ESD-coupled surges without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on protected ICs-critical for 3.3 V or 5 V logic interfacing with 12 V/24 V buses. |
| Fast response time & low dynamic impedance | Clamps within <1 ns and maintains low surge resistance, reducing voltage overshoot during rapid dV/dt events. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from ISO 7637-2 coupled transients in vehicle harnesses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to limit surge energy entering MCU or ASIC. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V sensor signal conditioning ICs by clamping to ≤58.1 V while maintaining 36 V DC operating margin. | Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., MAX13487, SN65HVD72) in factory automation PLCs exposed to motor switching noise. IC Role / Device Role / Timing Role: Differential-line TVS connected across A/B bus lines to absorb common-mode surges without affecting signal integrity. Use Value: Enables reliable 250 kbps+ data transmission by limiting bus voltage excursions to <60 V, avoiding receiver saturation or false triggering. |
| Consumer Power Adapter Input | Smart Meter AC/DC Front-End |
Use Scenario: Secondary-side transient protection on 5 V/12 V DC outputs of wall adapters subjected to lightning-induced surges via shared mains wiring. IC Role / Device Role / Timing Role: Clamp device placed after DC-DC converter output to protect downstream USB ports or microcontroller VDD rails. Use Value: Absorbs up to 600 W surge energy without failure, preserving adapter reliability and meeting UL 62368-1 surge immunity requirements. | Use Scenario: Surge suppression on isolated DC bias rails powering metrology ADCs and communication modules in ANSI C12.1-compliant smart meters. IC Role / Device Role / Timing Role: Bidirectional TVS on 3.3 V or 5 V isolated supply lines to prevent meter calibration drift or firmware corruption during grid switching events. Use Value: Maintains measurement accuracy by limiting rail excursion to ≤58.1 V-well below 6.0 V absolute max rating of precision SAR ADCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA-M3/52 | Same VWM/VBR/VC, but lower PPPM = 600 W (same rating), different package: SMB (DO-214AA), slightly larger footprint (4.57 mm × 3.94 mm vs. 4.57 mm × 3.30 mm). | Less suitable for ultra-high-density layouts; thermal resistance higher (RθJA = 110 °C/W vs. 100 °C/W). | Select SMBJ36CA-M3/52 only if legacy board uses SMB footprint or requires higher IFSM (100 A vs. N/A for bidirectional). |
| SMCJ36CA-M3 | Higher PPPM = 1500 W, same VWM/VBR, larger SMC (DO-214AB) package (7.11 mm × 6.22 mm); RθJA = 50 °C/W. | Overqualified for 600 W needs; occupies >2× PCB area; used where extreme surge margin (e.g., outdoor metering) justifies size penalty. | Choose SMCJ36CA-M3 only when system-level testing confirms need for >600 W clamping headroom or extended thermal endurance. |
Compared with SMBJ36CA-M3/52 and SMCJ36CA-M3, the SMBG36CA-M3/52 delivers identical electrical protection in the smallest possible surface-mount footprint with best-in-class thermal resistance for its size-making it optimal for space-constrained automotive and industrial modules requiring AEC-Q101 compliance and halogen-free construction.
Availability
SMBG36CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and smart meter front-end protection requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified reliability.
Supply support for SMBG36CA-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-grade, and industry-standard solutions.
The SMBG series was developed specifically for high-density, AEC-Q101-compliant transient suppression in automotive and industrial electronics-prioritizing low-profile packaging, repeatable clamping, and robust surge survivability in harsh environments.
FAQ
What is the clamping voltage of SMBG36CA-M3/52 at its rated peak pulse current?
The SMBG36CA-M3/52 clamps to a maximum of 58.1 V when subjected to its rated 10.3 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is guaranteed across temperature and production lot, ensuring downstream ICs see no more than 58.1 V during surge events-critical for protecting 3.3 V or 5 V logic interfaces. The SMBG36CA-M3/52 achieves this with low dynamic impedance and fast avalanche response.
Is SMBG36CA-M3/52 suitable for automotive applications?
Yes, the SMBG36CA-M3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, ADAS camera modules, and body electronics. Its halogen-free (M3) construction, 150 °C max junction temperature, and validated performance under ISO 7637-2 Pulse 1/2a/5a make it appropriate for under-hood and cabin environments. The SMBG36CA-M3/52 meets all required stress tests per AEC-Q101 Rev D.
How does the SMBG36CA-M3/52 differ from unidirectional variants like SMBG36A-M3/52?
The SMBG36CA-M3/52 is bidirectional, meaning it provides symmetrical clamping in both polarities-ideal for differential lines like CAN, RS-485, or AC-coupled signals. In contrast, SMBG36A-M3/52 is unidirectional with a cathode band marking and conducts only in reverse bias; it cannot suppress positive-going transients on the anode side. The SMBG36CA-M3/52 has no polarity marking and identical VBR in both directions (40.0–44.2 V).
What is the thermal resistance of SMBG36CA-M3/52, and how does it affect layout design?
The SMBG36CA-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 dictates minimum copper area required to avoid thermal runaway during repetitive surges. Layouts must follow the recommended pad dimensions in the Vishay SMBG outline drawing; reducing pad size increases RθJA and degrades surge endurance. The SMBG36CA-M3/52 benefits from internal thermal path optimization via its DO-215AA leadframe design.
Does SMBG36CA-M3/52 require orientation during PCB placement?
No, the SMBG36CA-M3/52 is a bidirectional device with no polarity marking-its two terminals are functionally identical. Unlike unidirectional TVS diodes (e.g., SMBG36A-M3/52), it does not have a cathode band and can be placed in either orientation on the PCB. This simplifies automated assembly and eliminates orientation-related assembly errors. The SMBG36CA-M3/52 is designed specifically for differential or AC-coupled protection where polarity independence is essential.
SMBG36CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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)
SMBG36CA-M3/52 FAQ
1.How can I place an order for SMBG36CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG36CA-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 SMBG36CA-M3/52 reliable?
The price and inventory of SMBG36CA-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 SMBG36CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBG36CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG36CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG36CA-M3/52?
SMBG36CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG36CA-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 SMBG36CA-M3/52?
For technical support, including SMBG36CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG36CA-M3/52 requirements.
6.How does Aetrix verify that SMBG36CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG36CA-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 SMBG36CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBG36CA-M3/52?
All SMBG36CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG36CA-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 SMBG36CA-M3/52 part is unused and in its original packaging.
Return procedure for SMBG36CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG36CA-M3/52 Tags
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