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Vishay General Semiconductor - Diodes Division SMBJ11CD-M3/I
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- Part No.:
- SMBJ11CD-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11CD-M3/I.pdf
- Description:
- TVS DIODE 11VWM 17.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,579
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Product details
Overview
SMBJ11CD-M3/I from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, with 11 V standoff voltage (VWM), 12.4–13.3 V breakdown voltage (VBR), and 600 W peak pulse power rating at 10/1000 μs waveform. It protects signal lines and power rails in sensor interfaces and industrial I/O against ESD and inductive switching transients.
For engineers reviewing the SMBJ11CD-M3/I datasheet, SMBJ11CD-M3/I pinout, SMBJ11CD-M3/I application, or SMBJ11CD-M3/I equivalent, key selection criteria include bidirectional clamping capability, ±3.5 % VBR tolerance, low leakage (<2.0 μA at VWM), M3 halogen-free RoHS-compliant construction, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates symmetrically in both polarities due to its bidirectional design, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its clamping voltage (VC = 17.9 V at IPPM) and low incremental surge resistance ensure effective voltage limiting during fast transients up to 33.5 A peak surge current.
The device meets J-STD-020 MSL Level 1 moisture sensitivity, supports 260 °C lead-free reflow, and features matte tin-plated terminals compliant with J-STD-002 and JESD 22-B102 solderability standards. Thermal resistance junction-to-ambient is 125 °C/W on minimum recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum reverse operating voltage before clamping begins; defines safe DC/AC signal swing range |
| VBR min/max | 12.4 V / 13.3 V - tight ±3.5 % breakdown tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 17.9 V - clamped voltage at 33.5 A surge; determines protected circuit's maximum transient overvoltage |
| PPPM | 600 W - peak pulse power handling per 10/1000 μs waveform; validates robustness against IEC 61000-4-5 surges |
| ID @ VWM | <2.0 μA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +150 °C - maximum junction temperature enables reliable operation in industrial ambient environments |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 3.94 mm footprint and 2.20 mm height |
Pinout & Package
Two-terminal device in SMB (DO-214AA) package; no polarity marking for bidirectional operation. Cathode band omitted per specification for CD-suffix parts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | Connects to line under protection; conducts during positive voltage excursions beyond VBR |
| Cathode | Transient current entry (negative half-cycle) | Connects to line under protection; conducts during negative voltage excursions beyond VBR |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC, differential, or floating signal paths without external polarity management |
| ±3.5 % VBR tolerance | Reduces design margin uncertainty and simplifies worst-case transient analysis for safety-critical systems |
| 600 W peak pulse power | Meets IEC 61000-4-5 Level 4 surge immunity requirements when mounted per recommended pad layout |
| MSL Level 1 rating | Eliminates bake-out requirement prior to assembly; supports standard SMT reflow profiles including lead-free |
| M3 suffix compliance | Guarantees halogen-free, RoHS-compliant, industrial-grade construction with JESD 201 Class 2 whisker resistance |
Applications
| Industrial Sensor Interface | RS-485 Communication Line |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to motor drive noise and relay switching transients in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional TVS clamp absorbing ±1 kV/500 A surges induced by nearby inductive loads. Use Value: Prevents sensor IC latch-up or damage while maintaining <2.0 μA leakage to avoid offset drift in precision 4–20 mA loops. | Use Scenario: Safeguarding RS-485 transceiver inputs/outputs connected to long cables in building control networks subject to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) voltage limiter clamping common-mode transients to ≤17.9 V during 10/1000 μs events. Use Value: Ensures data integrity and transceiver survival without adding series impedance or signal distortion to differential bus signals. |
| USB Port ESD Protection | DC Power Rail Clamp |
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D− lines downstream of integrated port protectors in embedded host controllers. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp suppressing ±15 kV contact discharge per IEC 61000-4-2. Use Value: Adds robustness without degrading signal rise/fall times due to absence of cathode band and optimized junction design. | Use Scenario: Overvoltage clamp on 12 V DC input rails of programmable logic controllers subjected to load dump and alternator spikes. IC Role / Device Role / Timing Role: Standoff-rated (11 V) transient suppressor conducting only during >12.4 V excursions to prevent upstream regulator failure. Use Value: Limits rail overshoot to 17.9 V during 33.5 A surges, protecting downstream MOSFETs and microcontrollers without crowbar action. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA-E3/52 | Same VWM/VBR/PPPM specs; differs in packaging (tape-and-reel quantity 2500 vs. 3200) and M3 vs. "E3" environmental compliance level | No functional difference in circuit behavior; E3 version lacks JESD 201 Class 2 whisker test certification | Select SMBJ11CD-M3/I for industrial deployments requiring verified whisker resistance and halogen-free compliance |
| P6SMB11CA | Identical electrical specs and SMB package; manufactured by STMicroelectronics with same VWM (11 V), VBR (12.4–13.3 V), and VC (17.9 V) | Same bidirectional clamping performance; minor variation in thermal resistance (RθJA = 130 °C/W vs. 125 °C/W) | Choose P6SMB11CA only if dual-sourcing is required and marginal thermal margin is acceptable |
Compared with SMBJ11CD-M3/I, SMBJ11CA-E3/52 offers identical protection performance but reduced reliability assurance for high-reliability industrial use, while P6SMB11CA delivers functionally equivalent clamping with slightly lower thermal efficiency-making SMBJ11CD-M3/I optimal for designs prioritizing MSL Level 1 process compatibility and whisker-resistant terminations.
Availability
SMBJ11CD-M3/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, RS-485 communication lines, and DC power rail clamping requiring stable component supply across extended production lifecycles.
Supply support for SMBJ11CD-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 and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in harsh industrial and automotive environments, delivering consistent clamping performance across temperature and lifetime while supporting automated manufacturing.
FAQ
What does the "CD" suffix indicate in SMBJ11CD-M3/I?
The "CD" suffix in SMBJ11CD-M3/I denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression for both positive and negative polarity transients. Unlike unidirectional "D" variants, SMBJ11CD-M3/I has no cathode band and functions identically in either orientation-ideal for AC-coupled or differential signal lines where polarity cannot be guaranteed.
Is SMBJ11CD-M3/I compatible with lead-free reflow processes?
Yes, SMBJ11CD-M3/I is fully compatible with lead-free reflow processes. It meets J-STD-020 MSL Level 1 and supports a maximum peak temperature of 260 °C. The matte tin-plated terminals comply with J-STD-002 and JESD 22-B102 solderability standards, ensuring reliable wetting and joint formation without pre-baking.
What is the clamping voltage of SMBJ11CD-M3/I at its rated surge current?
The clamping voltage (VC) of SMBJ11CD-M3/I is 17.9 V at its peak pulse current (IPPM) of 33.5 A, measured using the standard 10/1000 μs waveform. This value represents the maximum voltage imposed on the protected circuit during a full-rated transient event and is critical for verifying that downstream components remain within their absolute maximum ratings.
How does the M3 suffix affect the specifications of SMBJ11CD-M3/I?
The M3 suffix on SMBJ11CD-M3/I indicates halogen-free, RoHS-compliant, industrial-grade construction with JESD 201 Class 2 whisker resistance. It does not alter electrical parameters like VWM, VBR, or PPPM-but guarantees enhanced material reliability for long-term deployment in demanding environments where tin whisker growth or regulatory compliance are critical concerns.
Can SMBJ11CD-M3/I be used in place of a unidirectional SMBJ11D-M3/I?
No-SMBJ11CD-M3/I is not a drop-in replacement for unidirectional SMBJ11D-M3/I. While both share identical VWM (11 V), VBR (12.4–13.3 V), and PPPM (600 W), the CD variant is bidirectional with no polarity marking, whereas the D variant requires correct cathode orientation. Substituting one for the other may result in improper clamping or failure to suppress negative transients in unidirectional circuits.
SMBJ11CD-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):
- 11V
- Voltage - Breakdown (Min):
- 12.4V
- Voltage - Clamping (Max) @ Ipp:
- 17.9V
- Current - Peak Pulse (10/1000µs):
- 33.5A
- 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)
SMBJ11CD-M3/I FAQ
1.How can I place an order for SMBJ11CD-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11CD-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 SMBJ11CD-M3/I reliable?
The price and inventory of SMBJ11CD-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 SMBJ11CD-M3/I is usually 5 days.
3.What payment methods are accepted for SMBJ11CD-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11CD-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11CD-M3/I?
SMBJ11CD-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11CD-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 SMBJ11CD-M3/I?
For technical support, including SMBJ11CD-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11CD-M3/I requirements.
6.How does Aetrix verify that SMBJ11CD-M3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ11CD-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 SMBJ11CD-M3/I meets industry standards.
7.What is the process for return or replacement of SMBJ11CD-M3/I?
All SMBJ11CD-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11CD-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 SMBJ11CD-M3/I part is unused and in its original packaging.
Return procedure for SMBJ11CD-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11CD-M3/I Tags
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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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onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
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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