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Vishay General Semiconductor - Diodes Division SMBJ13CD-M3/I
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- Part No.:
- SMBJ13CD-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ13CD-M3/I.pdf
- Description:
- TVS DIODE 13VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,361
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Product details
Overview
SMBJ13CD-M3/I from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 13 V stand-off voltage (VWM), 14.6–15.7 V breakdown voltage (VBR) at 1 mA, 21.2 V maximum clamping voltage (VC) at 28.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, sensor interfaces, and industrial I/O circuits.
For engineers reviewing the SMBJ13CD-M3/I datasheet, SMBJ13CD-M3/I pinout, SMBJ13CD-M3/I application, or SMBJ13CD-M3/I equivalent, key selection criteria include bidirectional polarity, ±3.5 % VBR tolerance, low leakage (<0.5 μA at VWM), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamping protection element in both forward and reverse directions, leveraging avalanche breakdown to divert surge energy away from sensitive downstream circuitry. Its bidirectional configuration eliminates polarity concerns during board layout and enables symmetric transient suppression on AC-coupled or differential signal paths.
The SMBJ13CD-M3/I delivers stable clamping performance under repetitive 10/1000 μs surges up to 0.01 % duty cycle, with thermal resistance RθJA of 125 °C/W (on minimum pad) and junction temperature range from –55 °C to +150 °C - supporting operation in harsh industrial and automotive environments without derating below 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - maximum continuous reverse stand-off voltage before significant leakage begins; defines safe operating window for protected circuit |
| VBR min/max | 14.6 V / 15.7 V at 1 mA - tight ±3.5 % tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 21.2 V at 28.3 A - clamping voltage limits stress on downstream ICs during 600 W transient events |
| PPPM | 600 W - peak pulse power handling per 10/1000 μs waveform; validates robustness against lightning-induced or inductive-switching surges |
| ID @ VWM | <0.5 μA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 2.20 mm height and 5.59 mm length; compatible with J-STD-020 reflow profiles |
Pinout & Package
Two-terminal device in SMB (DO-214AA) package; no cathode band marking due to bidirectional construction. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, with M3 suffix indicating halogen-free, RoHS-compliant, industrial-grade construction meeting JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Surge current path | Either terminal conducts during overvoltage in either polarity; no polarity orientation required on PCB |
| Case (cathode side not marked) | Thermal and mechanical interface | Exposed copper pad area provides primary thermal path; requires minimum 5.0 mm × 5.0 mm copper for rated power dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional symmetry | Enables single-device protection of AC lines, differential buses (e.g., RS-485), and ungrounded sensor outputs without polarity constraints |
| ±3.5 % VBR tolerance | Reduces design margin overhead and allows tighter coordination with IC absolute maximum ratings |
| MSL Level 1 rating | Permits unlimited floor life and standard reflow without baking, simplifying SMT line logistics |
| 600 W peak pulse capability | Meets IEC 61000-4-5 Level 4 (4 kV) surge immunity requirements when paired with appropriate series impedance |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV), improving protection fidelity |
Applications
| Industrial Sensor Interface Protection | RS-485 Transceiver Protection |
|---|---|
Use Scenario: Protecting analog voltage/current output sensors (e.g., 4–20 mA loops, 0–10 V transmitters) from inductive switching transients in factory automation cabinets. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed across signal and return lines upstream of signal conditioning op-amps or ADC inputs. Use Value: Limits transient excursions to ≤21.2 V, preventing latch-up or damage to 24 V-rated input stages while maintaining <0.5 μA leakage at 13 V nominal. | Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., MAX13487, SN65HVD72) against cable discharge events and ground potential differences in building control networks. IC Role / Device Role / Timing Role: Bidirectional clamping element connected between A/B differential pair and ground, absorbing common-mode surges without disrupting DC bias. Use Value: Maintains signal integrity during 10/1000 μs surges up to 600 W while adding negligible capacitance (<100 pF) to the bus, preserving data rates up to 20 Mbps. |
| DC Power Rail Protection | Automotive Body Control Module I/O |
Use Scenario: Secondary overvoltage protection on 12 V DC input rails feeding microcontrollers, CAN transceivers, and LED drivers in embedded systems. IC Role / Device Role / Timing Role: Parallel-connected clamping device placed after primary filtering (e.g., ferrite bead + bulk capacitor), responding within picoseconds to load dump or jump-start spikes. Use Value: Clamps 12 V rail transients to ≤21.2 V within nanoseconds, allowing downstream LDOs or DC-DC converters to remain functional during ISO 7637-2 Pulse 1/2a events. | Use Scenario: Input protection for GPIOs and LIN bus pins in automotive body control modules exposed to battery disconnect/load dump conditions. IC Role / Device Role / Timing Role: Bidirectional TVS on each protected pin, mounted directly at connector entry point to minimize inductance and maximize surge current diversion. Use Value: Withstands repeated 10/1000 μs surges up to 600 W and operates reliably from –40 °C to +125 °C ambient, meeting AEC-Q200 stress test requirements for Grade 2 components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13CA-E3/52 | Same VWM/VBR/VC specs; differs in packaging (tape-and-reel vs. bulk), MSL level (1 vs. 1), and compliance (RoHS vs. RoHS+HF) | No functional difference in circuit protection behavior; identical clamping performance and thermal characteristics | Select SMBJ13CA-E3/52 only if sourcing through Vishay's standard distribution channel with different reel size or compliance documentation needs |
| 1.5SMC13CA | Higher package thermal resistance (RθJA = 150 °C/W), larger SMC (DO-214AB) footprint, same electrical specs but lower surge current rating (27.3 A vs. 28.3 A) | Requires larger PCB area and exhibits higher junction temperature rise under identical surge conditions | Choose 1.5SMC13CA only if existing layout uses SMC footprint and thermal derating margins allow 1.0 °C/W higher resistance |
Compared with SMBJ13CD-M3/I, SMBJ13CA-E3/52 offers identical protection performance with alternate packaging logistics, while 1.5SMC13CA trades compact SMB size for slightly reduced thermal efficiency and larger board area - making SMBJ13CD-M3/I optimal for space-constrained, high-density industrial PCBs requiring MSL Level 1 reliability.
Availability
SMBJ13CD-M3/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, RS-485 communication ports, and 12 V DC power rail protection requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for SMBJ13CD-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 is engineered for high-energy transient suppression in industrial, automotive, and telecom infrastructure - delivering tight VBR tolerance, low clamping voltage, and robust surge handling in compact surface-mount packages.
FAQ
What is the polarity configuration of SMBJ13CD-M3/I?
SMBJ13CD-M3/I is a bidirectional TVS diode, meaning it provides symmetrical clamping in both forward and reverse directions. Unlike unidirectional variants (e.g., SMBJ13D), it has no cathode band marking and functions identically regardless of voltage polarity applied across its terminals - ideal for AC-coupled or differential signal protection where polarity cannot be guaranteed.
Does SMBJ13CD-M3/I meet automotive qualification standards?
SMBJ13CD-M3/I is not AEC-Q200 qualified, but its –55 °C to +150 °C operating junction temperature range, MSL Level 1 rating, and robust 600 W surge capability make it suitable for non-safety-critical automotive applications such as body control module I/O protection, provided system-level validation confirms compliance with ISO 7637-2 Pulse 1/2a requirements. For AEC-Q200–mandated designs, consult Vishay's Automotive-grade SMBJ variants.
What is the maximum clamping voltage of SMBJ13CD-M3/I under surge conditions?
The maximum clamping voltage (VC) of SMBJ13CD-M3/I is 21.2 V at 28.3 A peak pulse current (IPPM), measured using the standardized 10/1000 μs double-exponential surge waveform. This value represents the upper limit of voltage seen by downstream circuitry during worst-case transient events and is critical for ensuring compatibility with 24 V-rated ICs and interfaces.
Can SMBJ13CD-M3/I replace SMBJ13D in an existing design?
SMBJ13CD-M3/I cannot directly replace SMBJ13D without layout review, because SMBJ13D is unidirectional (cathode-banded) while SMBJ13CD-M3/I is bidirectional (no band). If the original design relies on polarity-sensitive placement or DC biasing, substitution may cause unintended conduction. However, in AC or differential applications where polarity independence is beneficial, SMBJ13CD-M3/I offers enhanced flexibility - verify clamping behavior under actual operating bias conditions before replacement.
What PCB pad layout is recommended for SMBJ13CD-M3/I to achieve full 600 W rating?
To sustain the full 600 W peak pulse power rating, SMBJ13CD-M3/I requires mounting on a minimum 5.0 mm × 5.0 mm copper pad area per terminal, as specified in Vishay's datasheet Figure 2 and Thermal Characteristics table. Using smaller pads increases thermal resistance (RθJA up to 125 °C/W), causing junction temperature to rise faster during surge events and potentially reducing effective power handling - always follow the recommended land pattern in DO-214AA outline drawing.
SMBJ13CD-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):
- 13V
- Voltage - Breakdown (Min):
- 14.6V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 28.3A
- 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)
SMBJ13CD-M3/I FAQ
1.How can I place an order for SMBJ13CD-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ13CD-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 SMBJ13CD-M3/I reliable?
The price and inventory of SMBJ13CD-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 SMBJ13CD-M3/I is usually 5 days.
3.What payment methods are accepted for SMBJ13CD-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ13CD-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ13CD-M3/I?
SMBJ13CD-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ13CD-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 SMBJ13CD-M3/I?
For technical support, including SMBJ13CD-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ13CD-M3/I requirements.
6.How does Aetrix verify that SMBJ13CD-M3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ13CD-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 SMBJ13CD-M3/I meets industry standards.
7.What is the process for return or replacement of SMBJ13CD-M3/I?
All SMBJ13CD-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ13CD-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 SMBJ13CD-M3/I part is unused and in its original packaging.
Return procedure for SMBJ13CD-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ13CD-M3/I Tags
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DESD3V3E1BL-7B
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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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