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Vishay General Semiconductor - Diodes Division SMBJ36CD-M3/I
- Part No.:
- SMBJ36CD-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ36CD-M3/I.pdf
- Description:
- TVS DIODE 36VWM 57.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,770
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Product details
Overview
SMBJ36CD-M3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 36 V stand-off voltage (VWM), 40.6–43.6 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), and clamps to ≤57.3 V at 10.5 A peak surge current - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ36CD-M3/I datasheet, SMBJ36CD-M3/I pinout, SMBJ36CD-M3/I application, or SMBJ36CD-M3/I equivalent, key selection criteria include bidirectional clamping capability, ±3.5% VBR tolerance, MSL Level 1 moisture sensitivity, halogen-free RoHS-compliant construction, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling transient suppression without polarity dependency - critical for AC-coupled or differential signal lines. Its low incremental surge resistance and fast response time (<1 ns) ensure effective clamping before downstream ICs experience overvoltage stress.
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient, with thermal resistance RθJA = 125 °C/W on minimum recommended pad layout. It meets UL 497B recognition (QVGQ2) and complies with JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse working voltage before leakage exceeds 0.5 μA |
| VBR min/max | 40.6 V / 43.6 V at 1 mA - tight ±3.5% tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | ≤57.3 V at 10.5 A - clamping voltage limits stress on protected MOSFETs or interface ICs during ESD/EFT events |
| PPPM | 600 W (10/1000 μs waveform) - sustains high-energy surges common in industrial power rail transients |
| ID @ VWM | ≤0.5 μA - ultra-low leakage preserves signal integrity in high-impedance sensor bias networks |
| Package | SMB (DO-214AA) - 2-pin surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
| MSL Level | Level 1 (J-STD-020) - supports lead-free reflow up to 260 °C peak without baking |
Pinout & Package
Two-terminal SMB (DO-214AA) package with no polarity marking - bidirectional operation eliminates cathode band identification requirement. Terminals are matte tin-plated, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Either terminal serves as anode or cathode depending on instantaneous polarity - enables single-device protection of AC or floating lines |
| Cathode/Anode (symmetrical) | Transient conduction path | Identical electrical behavior in both directions - simplifies layout and eliminates orientation errors during placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of differential pairs (e.g., RS-485, CAN bus) without external polarity management circuitry |
| ±3.5% VBR tolerance | Reduces design margin overhead and allows tighter coordination with IC absolute maximum ratings |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surge (4 kV, 2 Ω source) on 24 V industrial control lines |
| Halogen-free, RoHS-compliant M3 suffix | Meets IPC-1752A material declaration requirements and JESD201 Class 2 whisker resistance for automotive-grade reliability |
| UL 497B recognized (QVGQ2) | Validated for use in telecom and industrial equipment requiring third-party safety certification |
Applications
| Industrial Sensor Interface | RS-485 Communication Line |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature transmitters exposed to motor drive noise and relay switching transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, limiting transients to <57.3 V during 10.5 A surges. Use Value: Prevents latch-up or gate oxide damage in downstream op-amps and ADC drivers operating at ±15 V rails. |
Use Scenario: Shielding half-duplex RS-485 transceivers (e.g., SN65HVD72) against EFT bursts and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Common-mode transient suppressor across A/B differential pair and ground, leveraging symmetrical clamping. Use Value: Maintains signal integrity below 57.3 V clamping threshold while preserving DC common-mode range required for fail-safe biasing. |
| Telecom Power Feeding | PLC Digital Input Module |
Use Scenario: Safeguarding PoE-powered Ethernet PHYs and auxiliary DC-DC converters from induced surges on twisted-pair cables. IC Role / Device Role / Timing Role: Bidirectional clamp on each conductor relative to chassis ground, handling ±1 kV IEC 61000-4-5 surges. Use Value: Limits transient energy delivered to isolation barriers and magnetics, reducing risk of insulation breakdown in 100BASE-TX circuits. |
Use Scenario: Protecting 24 V DC digital input channels in programmable logic controllers subjected to inductive load switching spikes. IC Role / Device Role / Timing Role: Clamp placed between field input and internal optocoupler input, absorbing 600 W pulses without degradation. Use Value: Extends optocoupler lifetime by preventing reverse-bias overstress during 100 V/10 μs transients typical in solenoid coil flyback events. |
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-E3/52 (Vishay) | Same VWM/VBR/PPPM specs but M3 suffix omitted; RoHS-compliant but not halogen-free or JESD201 Class 2 qualified | Lacks M3's whisker resistance and halogen-free certification - unsuitable for automotive or high-reliability industrial deployments | Select SMBJ36CD-M3/I when traceable sourcing, extended lifecycle support, and Class 2 whisker resistance are required. |
| 1.5SMC36CA (ON Semiconductor) | Same SMB package and 36 V bidirectional rating, but 1.5 kW peak power (10/1000 μs); higher VC (63.2 V) and looser VBR tolerance (±5%) | Higher clamping voltage may exceed safe margins for 3.3 V or 5 V logic interfaces; better suited for 48 V power rail protection | Choose SMBJ36CD-M3/I where precise clamping (<57.3 V), tight VBR tolerance, and MSL Level 1 process compatibility are critical. |
Compared with SMBJ36CA-E3/52 and 1.5SMC36CA, the SMBJ36CD-M3/I delivers tighter VBR control, lower clamping voltage, halogen-free compliance, and verified whisker resistance - making it optimal for space-constrained, high-reliability industrial and telecom designs requiring consistent surge immunity.
Availability
SMBJ36CD-M3/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, RS-485 communication lines, and PLC digital input modules requiring stable component supply, full traceability, and long-term lifecycle assurance.
Supply support for SMBJ36CD-M3/I 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, precision, and application-specific optimization.
The SMBJ series targets robust transient suppression in harsh environments - engineered for industrial automation, telecom infrastructure, and automotive subsystems where surge immunity and long-term stability are non-negotiable.
FAQ
What is the clamping voltage of SMBJ36CD-M3/I at its rated peak pulse current?
The SMBJ36CD-M3/I clamps to a maximum of 57.3 V at its rated peak pulse current of 10.5 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees protection margin for downstream components rated for ≤60 V absolute maximum voltage, such as many industrial-grade op-amps and interface ICs.
Is SMBJ36CD-M3/I suitable for bidirectional signal line protection?
Yes, SMBJ36CD-M3/I is explicitly designed for bidirectional applications, as indicated by the "CD" suffix. Its symmetrical breakdown characteristics allow identical clamping performance regardless of voltage polarity - making it ideal for protecting differential buses like RS-485, CAN, or LVDS signal pairs without requiring dual-device configurations.
Does SMBJ36CD-M3/I meet UL safety certification requirements?
Yes, SMBJ36CD-M3/I carries Underwriters Laboratory Recognition under UL 497B (file E136766) for both unidirectional and bidirectional protectors. This certification validates its suitability in telecom and industrial equipment where third-party safety approval is mandated for transient protection components.
What is the thermal resistance of SMBJ36CD-M3/I on standard PCB layout?
The SMBJ36CD-M3/I exhibits a typical junction-to-ambient thermal resistance (RθJA) of 125 °C/W when mounted on the minimum recommended pad layout per Vishay's datasheet. This value informs derating calculations for sustained power dissipation and must be used alongside the 5.0 W PD rating at TJ = 50 °C for thermal design validation.
How does the M3 suffix affect SMBJ36CD-M3/I's compliance and reliability?
The M3 suffix on SMBJ36CD-M3/I denotes halogen-free, RoHS-compliant construction with matte tin-plated leads that pass JESD201 Class 2 whisker testing. It also confirms compliance with J-STD-020 MSL Level 1, enabling direct use in lead-free reflow processes up to 260 °C without preconditioning - enhancing long-term reliability in automotive and industrial applications.
SMBJ36CD-M3/I 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40.6V
- Voltage - Clamping (Max) @ Ipp:
- 57.3V
- Current - Peak Pulse (10/1000µs):
- 10.5A
- 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)
SMBJ36CD-M3/I FAQ
1.How can I place an order for SMBJ36CD-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ36CD-M3/I 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 SMBJ36CD-M3/I reliable?
The price and inventory of SMBJ36CD-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ36CD-M3/I is usually 5 days.
3.What payment methods are accepted for SMBJ36CD-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ36CD-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ36CD-M3/I?
SMBJ36CD-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ36CD-M3/I 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 SMBJ36CD-M3/I?
For technical support, including SMBJ36CD-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ36CD-M3/I requirements.
6.How does Aetrix verify that SMBJ36CD-M3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ36CD-M3/I 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 SMBJ36CD-M3/I meets industry standards.
7.What is the process for return or replacement of SMBJ36CD-M3/I?
All SMBJ36CD-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ36CD-M3/I, 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 SMBJ36CD-M3/I part is unused and in its original packaging.
Return procedure for SMBJ36CD-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ36CD-M3/I Tags
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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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