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Vishay General Semiconductor - Diodes Division SMBG36A-M3/5B
- Part No.:
- SMBG36A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG36A-M3/5B.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,860
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Product details
Overview
SMBG36A-M3/5B 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 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), clamping voltage of 58.1 V at 10.3 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG36A-M3/5B datasheet, SMBG36A-M3/5B pinout, SMBG36A-M3/5B application, or SMBG36A-M3/5B equivalent, key selection criteria include its unidirectional polarity, low clamping ratio (VC/VBR ≈ 1.42), 150 °C max junction temperature, halogen-free RoHS-compliant construction (M3 suffix), and suitability for high-surge industrial and automotive signal-line protection.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, responding to transients within picoseconds by entering avalanche breakdown when reverse voltage exceeds VBR. Its glass-passivated junction ensures stable leakage (<1.0 μA at 36 V) and long-term reliability under repetitive surge stress.
Rated for 600 W peak pulse power (10/1000 μs waveform, 0.01% duty cycle), it handles up to 10.3 A peak pulse current and 100 A non-repetitive forward surge (8.3 ms half-sine), with thermal resistance RθJA = 100 °C/W on 5.0 mm × 5.0 mm copper pads - critical for thermal management in compact PCB layouts.
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 - Confirmed avalanche onset range; ensures predictable turn-on across manufacturing lot. |
| VC @ IPPM | 58.1 V at 10.3 A - Clamped voltage during 600 W transient; determines maximum stress imposed on downstream ICs. |
| PPPM | 600 W - Peak pulse power handling per 10/1000 μs waveform; validates compliance with IEC 61000-4-5 Level 4 surge immunity. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms); supports protection against inductive switch-off events in power circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| Package | SMBG (DO-215AA) - Surface-mount, low-profile package with 5.97 mm × 4.06 mm footprint; optimized for automated placement and thermal pad attachment. |
Pinout & Package
SMBG36A-M3/5B uses the SMBG (DO-215AA) surface-mount package: 2-terminal, gull-wing leaded case with cathode band marking. The package measures 5.97 mm × 4.06 mm × 2.41 mm (L × W × H), features matte tin-plated leads compliant with J-STD-002, and meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage event. |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping path and defines reference for VWM/VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring zero-failure reliability. |
| 600 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive equipment without derating. |
| Halogen-free, RoHS-compliant (M3 suffix) | Complies with EU Directive 2011/65/EU and JEDEC JESD201 Class 2 whisker resistance for long-term solder joint integrity. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV), improving protection margin for 3.3 V/5 V logic. |
| MSL Level 1 (J-STD-020) | Unlimited floor life at ≤30 °C/60% RH; eliminates bake requirements prior to reflow assembly. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and body control module inputs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and ground, absorbing 600 W surges while holding clamped voltage below IC absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers during ISO 7637-2 Pulse 5a (load dump) events up to 60 V. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on 4–20 mA current loop or 0–10 V analog output lines exposed to relay switching noise. Use Value: Limits induced transients to ≤58.1 V, ensuring sensor signal integrity and preventing ADC saturation or op-amp input stage damage. |
| Telecom Equipment Surge Suppression | Consumer Device USB/Power Port Protection |
Use Scenario: Shielding Ethernet PHY power rails and auxiliary bias supplies in PoE-powered switches and base stations. IC Role / Device Role / Timing Role: Stand-off voltage-matched TVS on +12 V/+24 V bias rails, activated only during lightning-induced surges exceeding 36 V. Use Value: Maintains normal operation below 36 V while clamping 10/1000 μs surges to 58.1 V - compatible with standard DC-DC converter input ratings. | Use Scenario: Overvoltage guard on USB-C VBUS or external 12 V adapter input in smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: First-stage protection device upstream of eFuse or load switch, shunting fault energy before it reaches power management ICs. Use Value: Withstands 100 A 8.3 ms surges from hot-plug events and limits clamping voltage to protect 20 V-rated buck converters and USB PD controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG36A-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs M3). | Approved for industrial grade only; lacks AEC-Q101 qualification and JESD201 Class 2 whisker resistance. | Select when halogen-free requirement is absent and automotive qualification is unnecessary. |
| SMBG36CA-M3/5B | Bidirectional variant; symmetric VBR (40.0–44.2 V) in both polarities; same VWM, PPPM, and package. | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN FD) where reverse transients must also be suppressed. | Choose only if bidirectional clamping is needed; not a drop-in replacement for unidirectional use cases. |
Compared with SMBG36A-M3/5B, the E3 variant trades halogen-free content for lower cost in non-automotive settings, while the 36CA variant adds bidirectional capability at the expense of polarity-specific design flexibility - making SMBG36A-M3/5B optimal for cost-sensitive, single-polarity automotive power rail protection.
Availability
SMBG36A-M3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer USB-C power port protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBG36A-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, efficiency, and application-specific performance.
The SMBG series was developed to deliver high-power transient suppression in compact surface-mount packages for automotive, industrial, and telecom systems where space, thermal performance, and AEC-Q101 compliance are mandatory.
FAQ
What is the breakdown voltage range of SMBG36A-M3/5B?
The SMBG36A-M3/5B has a specified breakdown voltage (VBR) range of 40.0 V to 44.2 V at a test current of 1 mA. This range reflects manufacturing tolerance and ensures consistent clamping behavior across production lots. The value is measured under standard conditions (TA = 25 °C) and is critical for verifying compatibility with the protected circuit's overvoltage threshold. All SMBG36A-M3/5B units meet this specification per Vishay Document Number 88456.
Is SMBG36A-M3/5B suitable for automotive applications?
Yes, SMBG36A-M3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and chassis-mounted modules. Its 150 °C maximum junction temperature, halogen-free construction (M3 suffix), and JESD201 Class 2 whisker resistance support long-term reliability in harsh environments. The SMBG36A-M3/5B datasheet confirms qualification per AEC-Q101 Rev D, making it appropriate for engine control, lighting, and ADAS subsystems.
What does the "M3" suffix indicate in SMBG36A-M3/5B?
The "M3" suffix in SMBG36A-M3/5B denotes halogen-free, RoHS-compliant, industrial-grade construction with JESD201 Class 2 whisker resistance. It distinguishes the part from E3 (RoHS-compliant but not halogen-free) and HM3 (AEC-Q101 qualified + halogen-free). The M3 version retains AEC-Q101 qualification and is approved for automotive use, unlike E3. This designation is defined in Vishay's ordering information table on page 3 of Document 88456.
How does SMBG36A-M3/5B compare to SMBG36CA-M3/5B?
SMBG36A-M3/5B is unidirectional, while SMBG36CA-M3/5B is bidirectional - meaning the latter clamps transients of either polarity, whereas SMBG36A-M3/5B only protects against reverse-biased overvoltage. Both share identical VWM (36 V), VBR (40.0–44.2 V), PPPM (600 W), and SMBG package. SMBG36A-M3/5B is not interchangeable with SMBG36CA-M3/5B unless circuit polarity is verified and unidirectional operation is confirmed.
What is the maximum clamping voltage of SMBG36A-M3/5B at rated peak pulse current?
The maximum clamping voltage (VC) of SMBG36A-M3/5B is 58.1 V at its rated peak pulse current (IPPM) of 10.3 A, measured using a 10/1000 μs waveform. This value represents the upper limit of voltage seen by downstream components during a full-power transient event. It is derived from standardized testing per ANSI/IEEE C62.35 and published in Table 1 of Vishay Document 88456 - a key parameter for validating protection margins in 36 V nominal systems.
SMBG36A-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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBG36A-M3/5B FAQ
1.How can I place an order for SMBG36A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG36A-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 SMBG36A-M3/5B reliable?
The price and inventory of SMBG36A-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 SMBG36A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG36A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG36A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG36A-M3/5B?
SMBG36A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG36A-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 SMBG36A-M3/5B?
For technical support, including SMBG36A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG36A-M3/5B requirements.
6.How does Aetrix verify that SMBG36A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG36A-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 SMBG36A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG36A-M3/5B?
All SMBG36A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG36A-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 SMBG36A-M3/5B part is unused and in its original packaging.
Return procedure for SMBG36A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG36A-M3/5B Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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