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STMicroelectronics SMBJ5.0CA-TR
- Part No.:
- SMBJ5.0CA-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CA-TR.pdf
- Description:
- TVS DIODE 5VWM 9.2VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:488
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Product details
Overview
SMBJ5.0CA-TR from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode in SMB package, designed for IEC 61000-4-2 ESD and IEC 61000-4-4 surge protection on signal/power lines. It features 5.0 V standoff voltage (VRM), 9.2 V clamping voltage at 68 A (10/1000 µs), 600 W peak pulse power, 0.2 µA max leakage at 25 °C, and operates up to 150 °C junction temperature - deployed in industrial sensor interfaces and automotive body control modules.
For engineers reviewing the SMBJ5.0CA-TR datasheet, SMBJ5.0CA-TR pinout, SMBJ5.0CA-TR application, or SMBJ5.0CA-TR equivalent, key selection criteria include bidirectional clamping behavior, low-leakage performance at elevated temperature, UL497B recognition for isolated loop circuits, and compatibility with IPC7531 footprint and JEDEC SMB outline.
Technical Context
This TVS diode uses planar silicon technology to achieve stable breakdown characteristics and low dynamic resistance (0.031 Ω at 25 °C). Its bidirectional architecture enables symmetrical clamping for AC-coupled or floating signal paths without polarity dependency.
The device meets IEC 61000-4-2 level 4 (30 kV air/contact discharge) and IEC 61000-4-4 level 4 (4 kV), with clamping voltage defined across 10/1000 µs and 8/20 µs waveforms. Thermal design leverages FR4 PCB copper area to maintain Rth(j-a) ≤ 140 °C/W under recommended footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 5.0 V - Maximum continuous reverse operating voltage before significant conduction begins. |
| Breakdown Voltage (VBR) | 6.40–6.74 V at 10 mA - Ensures reliable triggering margin above VRM for robust overvoltage detection. |
| Clamping Voltage (VCL) | 9.2 V at 68 A (10/1000 µs) - Limits downstream IC stress during surge events within safe voltage envelope. |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs) - Sustains high-energy transients common in industrial switching environments. |
| Leakage Current (IRM) | 0.2 µA max at 25 °C - Minimizes standby power loss and signal integrity impact in low-power sensor nodes. |
| Junction Temperature Range | −55 to +150 °C - Supports operation in under-hood automotive and high-ambient industrial enclosures. |
| Dynamic Resistance (RD) | 0.031 Ω - Low impedance ensures rapid voltage stabilization during fast-rising surges. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, JEDEC registered outline, 3.3–3.95 mm width × 5.1–5.6 mm length × 1.9–2.45 mm height, matte tin-plated leads compliant with J-STD-020 MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (K) | Common terminal for bidirectional clamping | Internally connected to both P-N junctions; forms symmetrical clamping path between anode terminals. |
| Anode (A1) | First anode terminal | Provides one side of bidirectional conduction path; electrically identical to A2 in layout symmetry. |
| Anode (A2) | Second anode terminal | Completes bidirectional structure; enables equal clamping in either polarity without external orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and floating power rails without polarity constraints. |
| UL497B recognition | Agency file E136224 certifies use as isolated loop circuit protector - critical for telecom and process control safety compliance. |
| Low-temperature coefficient | αT = 5.7 × 10−4/°C - Ensures predictable VBR and VCL drift across −55 to +150 °C operating range. |
| High surge robustness | Withstands 4 kW (8/20 µs) per IEC 61000-4-4 - exceeds typical industrial surge requirements by >6×. |
| Low capacitance | ~1000 pF at 1 V (f = 1 MHz) - preserves signal integrity on data lines up to ~10 Mbps without added filtering. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 4–20 mA current-loop sensors against ESD and load-dump induced transients in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional TVS placed across sensor input terminals to clamp ±15 kV ESD and 100 V/100 ns surges before reaching precision ADC front-end. Use Value: Prevents latch-up or permanent damage to op-amps and current-sense ICs while maintaining <0.2 µA leakage-induced offset error. | Use Scenario: Safeguarding LIN bus transceivers and microcontroller GPIOs from battery reverse connection and alternator load dump in door module ECUs. IC Role / Device Role / Timing Role: TVS mounted directly at connector entry point to limit transient voltage to <12 V during 100 V/40 ms load dump events. Use Value: Enables reliable operation at 150 °C ambient under hood, with clamping response time <1 ns ensuring no propagation delay in fault signaling. |
| RS-485 Communication Port | Smart Meter Power Supply Input |
Use Scenario: Shielding half-duplex RS-485 transceivers (e.g., SN65HVD72) from lightning-induced surges on long outdoor cable runs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across A/B differential pair and ground to suppress common-mode and differential-mode transients simultaneously. Use Value: Maintains signal fidelity up to 10 Mbps due to low 1000 pF capacitance and symmetrical 9.2 V clamping, eliminating need for additional series impedance. | Use Scenario: Protecting AC-DC converter primary-side rectifier and controller ICs from mains-borne surges in residential smart electricity meters. IC Role / Device Role / Timing Role: TVS installed across bridge rectifier output to clamp 6 kV ring-wave transients per IEC 61000-4-5 before bulk capacitor and PWM controller. Use Value: Delivers 600 W (10/1000 µs) energy absorption without derating at 85 °C ambient, extending lifetime in sealed meter enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CA from Vishay (SMBJ5.0CA-E3/5BT) | Same SMB package, 5.0 V VRM, but higher clamping voltage (9.6 V @ 65 A) and higher leakage (1 µA @ 25 °C). | Marginally lower surge immunity in high-speed data lines due to 0.4 V higher VCL and 5× leakage. | Select when cost sensitivity outweighs sub-0.5 V clamping advantage and ultra-low leakage is noncritical. |
| P6SMB5.0CA from ON Semiconductor | Identical electrical specs (9.2 V VCL @ 68 A, 0.2 µA IR), but rated only to 125 °C Tj and lacks UL497B recognition. | Not suitable for isolated loop safety-critical systems requiring UL certification. | Prefer for non-certified consumer electronics where thermal margin is sufficient and agency approval is not mandated. |
Compared with Vishay's SMBJ5.0CA-E3/5BT and ON Semi's P6SMB5.0CA, the STMicroelectronics SMBJ5.0CA-TR offers superior thermal capability (150 °C vs. 125 °C), certified UL497B isolation compliance, and lowest leakage - making it optimal for safety-critical industrial and automotive designs demanding long-term reliability under thermal stress.
Availability
SMBJ5.0CA-TR is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, RS-485 communication ports, and smart meter power supply inputs requiring stable component supply and full regulatory traceability.
Supply support for SMBJ5.0CA-TR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering innovative solutions across automotive, industrial, power, and sensing markets with strong IP and manufacturing vertical integration.
The SMBJ series belongs to ST's Transient Voltage Suppressor portfolio, engineered specifically for high-reliability surge and ESD protection in harsh electromagnetic environments where low leakage, high-temperature stability, and regulatory compliance are mandatory.
FAQ
What is the difference between SMBJ5.0CA-TR and SMBJ5.0A-TR?
The "CA" suffix denotes bidirectional configuration, meaning it clamps symmetrically for both positive and negative transients, while "A" indicates unidirectional operation with cathode-anode polarity. SMBJ5.0CA-TR has identical standoff (5.0 V) and clamping (9.2 V) values but supports AC-coupled or floating signal lines without polarity concerns - essential for RS-485, CAN, or audio interfaces.
Does SMBJ5.0CA-TR meet automotive AEC-Q200 requirements?
No - SMBJ5.0CA-TR is not AEC-Q200 qualified. It is rated for operation up to 150 °C junction temperature and complies with UL497B, IEC 61000-4-2/4-4, and J-STD-020 MSL Level 1, but lacks the extended temperature cycling, vibration, and failure rate testing required for AEC-Q200. For automotive-grade TVS, ST recommends the SMAJ or SMCJ series with explicit AEC qualification.
Can SMBJ5.0CA-TR be used in parallel to increase surge current handling?
Parallel use is not recommended without current-sharing resistors or matched dynamic resistance. Due to parametric variation in VBR (±5%) and RD (±15%), uneven current division may cause one device to absorb >80% of the surge, leading to premature failure. For higher IPP, select a higher-rated part like SMBJ12CA or use discrete TVS arrays with integrated balancing.
What PCB layout practices maximize thermal performance for SMBJ5.0CA-TR?
Maximize copper area under both anode pads and cathode pad using ≥2.5 cm² total copper (per lead ≥1.25 cm²) on inner layers connected via ≥4 thermal vias per pad. Maintain IPC7531-compliant footprint (5.84 × 2.07 mm), avoid solder mask over thermal pads, and ensure reflow profile adheres to ST's 240–245 °C peak with ≤3 °C/s ramp rate to prevent intermetallic degradation.
SMBJ5.0CA-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 68A
- 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
SMBJ5.0CA-TR FAQ
1.How can I place an order for SMBJ5.0CA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CA-TR 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 SMBJ5.0CA-TR reliable?
The price and inventory of SMBJ5.0CA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0CA-TR is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CA-TR?
SMBJ5.0CA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CA-TR 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 SMBJ5.0CA-TR?
For technical support, including SMBJ5.0CA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CA-TR requirements.
6.How does Aetrix verify that SMBJ5.0CA-TR is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CA-TR 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 SMBJ5.0CA-TR meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CA-TR?
All SMBJ5.0CA-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CA-TR, 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 SMBJ5.0CA-TR part is unused and in its original packaging.
Return procedure for SMBJ5.0CA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0CA-TR Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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