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Diodes Incorporated SMBJ12CA-13-F
- Part No.:
- SMBJ12CA-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ12CA-13-F.pdf
- Description:
- TVS DIODE 12VWM 19.9VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:125,190
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Product details
Overview
SMBJ12CA-13-F from Diodes Incorporated is a bi-directional 600W surface-mount transient voltage suppressor (TVS) diode with 12V reverse standoff voltage, 13.3V minimum breakdown voltage, and 19.9V maximum clamping voltage at 30.2A peak pulse current. It features glass-passivated die construction, SMB package, and RoHS-compliant lead-free plating - used for ESD and surge protection in DC power rails and I/O interfaces of industrial controllers.
For engineers reviewing the SMBJ12CA-13-F datasheet, SMBJ12CA-13-F pinout, SMBJ12CA-13-F application, or SMBJ12CA-13-F equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, peak pulse current capability under 8.3ms waveform, unidirectional vs. bi-directional polarity requirements, and thermal derating above +25°C ambient.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling robust protection against positive and negative transients without requiring circuit polarity awareness. Its glass-passivated junction ensures stable leakage performance and high reliability under repeated surge stress.
The device complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) immunity standards when integrated with appropriate PCB layout and series impedance. Clamping begins at ~13.3V and limits to ≤19.9V at 30.2A, providing defined overvoltage headroom for 12V nominal systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 8.3ms half-sine surge without failure; derates linearly above +25°C ambient. |
| Reverse Standoff Voltage (VRWM) | 12.0V - maximum continuous DC or RMS voltage before significant leakage; defines operating rail compatibility. |
| Breakdown Voltage (VBR) | 13.3–15.3V @ 1.0mA - onset of avalanche conduction; ensures reliable turn-on before system damage threshold. |
| Clamping Voltage (VC) | 19.9V @ 30.2A - maximum voltage seen by protected circuit during specified 8.3ms surge event. |
| Peak Pulse Current (IPP) | 30.2A - peak current handled at 19.9V clamping; correlates directly to IEC 61000-4-5 Level 3 (1kV/2Ω) surge capability. |
| Leakage Current (IR) | ≤5.0µA @ 12V - negligible standby power loss and minimal impact on high-impedance sensing nodes. |
| Operating Temperature | −55°C to +150°C - supports deployment in automotive engine compartments and industrial outdoor enclosures. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case rated UL 94V-0; dimensions: 3.30–3.94mm (A), 4.06–4.57mm (B), 1.96–2.21mm (C); weight ≈ 0.1g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode for reverse polarity) | Bi-directional terminal pair | No polarity marking; terminals are functionally identical - enables placement without orientation check on PCB. |
| Anode (Cathode for reverse polarity) | Bi-directional terminal pair | Same electrical behavior as other terminal; symmetrical IV curve ensures equal clamping for ± transients. |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse power | Enables compliance with IEC 61000-4-5 surge test Level 3 (1kV line-to-ground, 2Ω source impedance) in typical 12V supply paths. |
| Glass-passivated die | Reduces parameter drift over time and temperature; improves long-term stability of VRWM and leakage versus silicon-only passivation. |
| Bi-directional configuration | Eliminates need for polarity-aware routing or dual-device solutions; simplifies layout for AC-coupled or floating signal lines. |
| RoHS & halogen-free | Meets EU Directive 2011/65/EU and green manufacturing requirements (<900ppm Br/Cl, <1000ppm Sb); suitable for export-sensitive designs. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protects 12V CAN transceiver power pins and digital input channels against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional TVS clamps fast-rising transients before they reach sensitive transceiver or microcontroller I/O structures. Use Value: Limits voltage to ≤19.9V during 30.2A surge, preserving 3.3V/5V logic integrity downstream via proper series impedance design. |
Use Scenario: Shields LIN bus transceivers and sensor supply lines from battery reversal and jump-start induced spikes. IC Role / Device Role / Timing Role: Acts as first-line overvoltage clamp on 12V rail inputs, absorbing energy before LDO regulators or MCU power domains. Use Value: Withstands 100A surge (per IFSM rating) and maintains <5µA leakage at 12V, minimizing quiescent current impact. |
| DC Power Supply Input Stage | USB-C Port ESD Protection |
Use Scenario: Placed at input of 12V switching regulator in telecom power modules exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response TVS diverts surge current away from primary-side MOSFETs and controller ICs during line transients. Use Value: 600W rating and 19.9V clamping ensure upstream components see no more than safe overvoltage margin during 8.3ms events. |
Use Scenario: Integrated into USB-C receptacle ESD protection network for VBUS and CC lines in portable docking stations. IC Role / Device Role / Timing Role: Bi-directional clamping handles both hot-plug voltage overshoot and contact ESD events on reversible connector pins. Use Value: Symmetric response eliminates need for separate uni-directional devices per pin; 12V VRWM aligns with USB PD 12V profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA-T | Same electrical specs; differs only in packaging - tape-and-reel quantity (5,000 pcs) and carrier tape width. | No functional difference; suited for high-volume SMT lines using different feeder configurations. | Select based on production volume and pick-and-place equipment compatibility, not performance. |
| SMCJ12CA-13-F | Higher 1500W peak power, larger SMC package (7.11 × 6.22 mm), higher clamping voltage (21.2V @ 71.4A). | Better for higher-energy threats (e.g., IEC 61000-4-5 Level 4), but requires more PCB area and has slower response due to higher junction capacitance. | Choose SMCJ12CA-13-F only if 600W is insufficient and board space allows larger footprint. |
Compared with SMBJ12CA-13-F, SMBJ12CA-T offers identical protection in alternate packaging, while SMCJ12CA-13-F trades compact size for higher surge capacity - making the SMBJ variant optimal for space-constrained 12V rail protection where 600W suffices.
Availability
SMBJ12CA-13-F is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and DC power supply input stages requiring stable component supply, consistent RoHS compliance, and verified surge performance.
Supply support for SMBJ12CA-13-F 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal devices, with emphasis on high-reliability protection, power management, and signal integrity solutions.
SMBJxxCA devices belong to Diodes' transient voltage suppressor portfolio, engineered specifically for robust, low-leakage, surface-mount surge protection in automotive, industrial, and communications infrastructure applications.
FAQ
What does the "C" suffix in SMBJ12CA-13-F indicate?
The "C" denotes bi-directional configuration - meaning the device clamps symmetrically for both positive and negative transients without polarity sensitivity. This distinguishes it from uni-directional variants like SMBJ12A-13-F, which require correct cathode orientation and only protect against one polarity of overvoltage.
How does SMBJ12CA-13-F perform under repeated surge stress?
It is rated for non-repetitive pulses per JEDEC standards; repeated surges must respect the derating curve (4.8W/°C above +25°C) and duty cycle limit of ≤4 pulses per minute. Thermal design must ensure junction temperature stays within −55°C to +150°C to maintain clamping consistency and avoid parametric shift.
Can SMBJ12CA-13-F be used on a 5V logic line?
No - its 12V standoff voltage is too high for direct 5V rail protection. At 5V operation, leakage remains low, but clamping starts at 13.3V and reaches 19.9V, exceeding safe margins for 5V ICs. Use SMBJ5.0CA-13-F (5V VRWM) instead for 5V systems.
Is SMBJ12CA-13-F compatible with lead-free reflow soldering?
Yes - it features matte tin lead-free plating and is qualified for standard Pb-free reflow profiles (J-STD-020 Level 1 moisture sensitivity). The SMB package withstands peak temperatures up to 260°C, and terminals meet MIL-STD-202 Method 208 solderability requirements.
SMBJ12CA-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 30.2A
- 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:
- SMB
SMBJ12CA-13-F FAQ
1.How can I place an order for SMBJ12CA-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ12CA-13-F 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 SMBJ12CA-13-F reliable?
The price and inventory of SMBJ12CA-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ12CA-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ12CA-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ12CA-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ12CA-13-F?
SMBJ12CA-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ12CA-13-F 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 SMBJ12CA-13-F?
For technical support, including SMBJ12CA-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ12CA-13-F requirements.
6.How does Aetrix verify that SMBJ12CA-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ12CA-13-F 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 SMBJ12CA-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ12CA-13-F?
All SMBJ12CA-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ12CA-13-F, 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 SMBJ12CA-13-F part is unused and in its original packaging.
Return procedure for SMBJ12CA-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ12CA-13-F Tags
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ESD9B5.0ST5G
onsemi
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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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ESD5Z5.0T1G
onsemi
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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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