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Vishay General Semiconductor - Diodes Division SMBJ36A-M3/52
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- Part No.:
- SMBJ36A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36A-M3/52.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,952
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Product details
Overview
SMBJ36A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown voltage (VBR) at 1.0 mA test current, 58.1 V maximum clamping voltage (VC) at 10.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ36A-M3/52 datasheet, SMBJ36A-M3/52 pinout, SMBJ36A-M3/52 application, or SMBJ36A-M3/52 equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, 1.0 µA max reverse leakage at VWM, halogen-free RoHS-compliant construction (M3 suffix), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, entering avalanche breakdown when transient voltage exceeds VBR. Its low incremental surge resistance and fast response time (<1 ps) enable effective suppression of inductive switching spikes and ESD events per IEC 61000-4-2.
The SMBJ36A-M3/52 uses a glass-passivated silicon junction and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It is rated for repetitive 0.01% duty cycle pulses and derates linearly above 25 °C ambient per Fig. 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 36 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin. |
| VBR (Breakdown Voltage) | 40.0–44.2 V at 1.0 mA - Guaranteed avalanche initiation range; ensures predictable clamping onset. |
| VC (Clamping Voltage) | 58.1 V at 10.3 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; limits stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Surge energy handling capability under standardized 10/1000 µs waveform; supports robust industrial transients. |
| IPPM (Peak Pulse Current) | 10.3 A - Maximum non-repetitive surge current the device can shunt without failure. |
| RθJA (Junction-to-Ambient θ) | 100 °C/W - Thermal resistance with standard pad layout; informs derating requirements for sustained power dissipation. |
| TJmax | 150 °C - Maximum allowable junction temperature; sets upper limit for thermal design margin in enclosed environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant (M3 suffix), matte tin-plated leads, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes conduction path during reverse-biased avalanche. |
| Cathode | High-side connection point | Connected to protected line (e.g., 36 V rail); carries surge current into ground via anode during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against high-energy transients common in 24–48 V industrial control systems without derating. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to downstream ICs while maintaining margin above VWM. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT manufacturing flow. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for export and automotive-tier supply chains. |
| 1.0 µA max reverse leakage at VWM | Prevents excessive standby current draw in battery-powered or low-power sensor nodes. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontrollers against inductive kickback from relay coils and solenoid loads. IC Role / Device Role / Timing Role: Unidirectional TVS placed across 36 V supply rail or MOSFET gate-source terminals to clamp transients below IC absolute maximum ratings. Use Value: Limits VDS overshoot to ≤58.1 V during 10.3 A surges, preventing gate oxide rupture and latch-up in 40 V-rated logic-level MOSFETs. |
Use Scenario: Safeguarding LIN bus transceivers and power management ICs in BCMs exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff-rated TVS on 36 V auxiliary rail, absorbing ISO 7637-2 Pulse 1/2a/5a energy without degradation. Use Value: Maintains <1.0 µA leakage at 36 V, avoiding false wake-up in sleep-mode LIN nodes while surviving 600 W pulses. |
| Programmable Logic Controllers | Industrial IoT Sensor Nodes |
|
Use Scenario: Input/output protection on 24–48 V digital I/O modules subjected to field wiring transients and ESD. IC Role / Device Role / Timing Role: Parallel-connected TVS on each channel's power and signal line, referenced to local ground plane. Use Value: Clamps 10/1000 µs surges to ≤58.1 V within nanoseconds, preserving signal integrity and enabling >100 kV ESD immunity per IEC 61000-4-2. |
Use Scenario: Overvoltage protection for battery-charged 36 V sensor hubs interfacing with analog front-ends and ADCs. IC Role / Device Role / Timing Role: Primary clamping device on main power input, upstream of LDO regulators and precision references. Use Value: 40.0–44.2 V VBR ensures reliable triggering above nominal 36 V rail while avoiding nuisance conduction during normal operation. |
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 | Bidirectional variant; symmetric VBR (40.0–44.2 V) in both polarities; no polarity marking. | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN FD); unsuitable for DC rails with defined polarity. | Select SMBJ36CA-M3/52 only when protecting bidirectional data lines or floating references where reverse conduction must be suppressed. |
| SMAJ36A-M3/52 | Lower 400 W PPPM; same VWM/VBR/VC but higher RθJA (140 °C/W); SMA (DO-214AC) package, smaller footprint. | Acceptable for lower-energy transients (e.g., consumer-grade sensors); limited thermal margin in high-ambient industrial enclosures. | Choose SMAJ36A-M3/52 only if board space is constrained and surge threat level is ≤400 W; verify thermal performance with actual PCB layout. |
Compared with SMBJ36CA-M3/52 and SMAJ36A-M3/52, the SMBJ36A-M3/52 provides optimal balance of 600 W surge capacity, 100 °C/W thermal resistance, and unidirectional polarity for 36 V DC power rail protection - making it the preferred choice for industrial motor drives and PLC I/O modules where polarity is fixed and energy levels are high.
Availability
SMBJ36A-M3/52 is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, and automotive body control modules requiring stable component supply with halogen-free compliance and MSL Level 1 handling.
Supply support for SMBJ36A-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, thermal performance, and automotive qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting industrial automation, transportation, and telecom infrastructure where long-term stability and surge survivability are critical.
FAQ
What is the maximum clamping voltage of SMBJ36A-M3/52 at its rated peak pulse current?
The SMBJ36A-M3/52 has a maximum clamping voltage (VC) of 58.1 V at 10.3 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the highest voltage the protected circuit will experience during a full-rated surge event. The SMBJ36A-M3/52 maintains this clamping performance across its specified operating temperature range when mounted per recommended pad layout.
Is SMBJ36A-M3/52 suitable for automotive applications requiring AEC-Q101 qualification?
No, SMBJ36A-M3/52 is not AEC-Q101 qualified. It is a commercial-grade, halogen-free, RoHS-compliant part (M3 suffix). For automotive use, select the HM3-suffixed variant - such as SMBJ36A-HM3/52 - which adds AEC-Q101 qualification while retaining identical electrical characteristics and SMB package. The SMBJ36A-M3/52 remains appropriate for industrial and telecom applications where automotive qualification is not mandated.
How does the M3 suffix affect the material composition and compliance of SMBJ36A-M3/52?
The M3 suffix on SMBJ36A-M3/52 indicates halogen-free, RoHS-compliant construction per Vishay's material categorization standards. This includes bromine- and chlorine-free molding compounds and lead-free matte tin plating on terminals. The M3 variant meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability rating. Unlike E3-suffixed parts, M3 ensures full halogen-free compliance required by certain EU and OEM environmental specifications.
What is the reverse leakage current specification for SMBJ36A-M3/52 at its stand-off voltage?
The SMBJ36A-M3/52 specifies a maximum reverse leakage current (ID) of 1.0 µA at its 36 V stand-off voltage (VWM) and 25 °C ambient temperature. This low leakage ensures minimal power loss in always-on circuits and avoids interference with high-impedance sensor inputs or battery-backed systems. Leakage increases with temperature and voltage but remains within datasheet limits up to 150 °C junction temperature.
Can SMBJ36A-M3/52 be used in bidirectional signal line protection?
No, SMBJ36A-M3/52 is a unidirectional TVS diode and must not be used on bidirectional signal lines such as RS-485, CAN, or USB. Its cathode band marks the high-side terminal, and it conducts only when the cathode is positive relative to the anode. For bidirectional protection, use the SMBJ36CA-M3/52 variant, which provides symmetrical clamping in both directions and has no polarity marking. Using SMBJ36A-M3/52 on AC or dual-polarity lines risks permanent failure during negative half-cycles.
SMBJ36A-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ36A-M3/52 FAQ
1.How can I place an order for SMBJ36A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36A-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 SMBJ36A-M3/52 reliable?
The price and inventory of SMBJ36A-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 SMBJ36A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ36A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36A-M3/52?
SMBJ36A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36A-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 SMBJ36A-M3/52?
For technical support, including SMBJ36A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36A-M3/52 requirements.
6.How does Aetrix verify that SMBJ36A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ36A-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 SMBJ36A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ36A-M3/52?
All SMBJ36A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36A-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 SMBJ36A-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ36A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36A-M3/52 Tags
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