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STMicroelectronics SMBJ10CA-TR
- Part No.:
- SMBJ10CA-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ10CA-TR.pdf
- Description:
- TVS DIODE 10VWM 17VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:22,502
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Product details
Overview
SMBJ10CA-TR from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode in SMB package, designed to clamp ESD and surge transients on signal/power lines. It features 10 V standoff voltage (VRM), 17 V clamping voltage at 37 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 I/O protection and telecom interface circuits.
For engineers reviewing the SMBJ10CA-TR datasheet, SMBJ10CA-TR pinout, SMBJ10CA-TR application, or SMBJ10CA-TR equivalent, key selection criteria include bidirectional clamping capability, low-leakage performance at elevated temperature, UL497B recognition for isolated loop protection, and compatibility with IPC7531 footprint and JEDEC SMB outline.
Technical Context
This TVS diode uses planar silicon technology to achieve stable breakdown behavior and low dynamic resistance (0.127 Ω at 10/1000 µs). Its bidirectional configuration enables symmetrical clamping across both polarities without external polarity management.
It meets IEC 61000-4-2 level 4 (±30 kV contact/air discharge) and IEC 61000-4-4 level 4 (4 kV), with failure mode specified as short-circuit under over-specified voltage/current - enabling predictable system-level fault containment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 10 V - maximum continuous reverse working voltage before clamping initiates |
| Breakdown Voltage (VBR min) | 11.1 V at 1 mA - guaranteed conduction onset under DC stress |
| Clamping Voltage (VCL) | 17 V at 37 A (10/1000 µs) - peak line voltage seen by protected IC during surge |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs) - surge energy handling capacity at 25 °C ambient |
| Leakage Current (IRM) | 0.2 µA at 10 V, 25 °C - minimal loading on high-impedance signal paths |
| Junction Temperature Range | −55 °C to +150 °C - supports operation in harsh industrial environments |
| UL Recognition | UL497B (file E136224) - certified for isolated loop circuit protection |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, JEDEC registered outline, IPC7531 compliant footprint, matte tin-plated leads per J-STD-002/E3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Marked Band) | Anode/Cathode reference for bidirectional symmetry | No functional polarity - band denotes terminal 1 per JEDEC DO-214AA; terminals are electrically identical |
| Anode (Unmarked End) | Anode/Cathode reference for bidirectional symmetry | Terminal 2 per JEDEC; device conducts identically in either direction above VBR |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity awareness |
| Low dynamic resistance | 0.127 Ω ensures minimal voltage overshoot during fast 10/1000 µs surges |
| High-temperature reliability | Rated for 150 °C Tj with <0.2 µA leakage at 25 °C and <1 µA at 85 °C - critical for sealed enclosures |
| UL497B certification | Validated for isolated loop protection in telecom and process control systems requiring safety agency compliance |
| ESD robustness | Withstands ±30 kV contact/air discharge (IEC 61000-4-2 level 4), exceeding typical interface IC immunity |
Applications
| Industrial PLC I/O Protection | Telecom Line Interface |
|---|---|
|
Use Scenario: Protecting 24 V DC digital input channels in programmable logic controllers against field-induced surges and ESD. IC Role / Device Role / Timing Role: Bidirectional TVS placed between signal line and ground, clamping transients before they reach input buffer ICs. Use Value: Prevents latch-up or permanent damage to microcontroller GPIOs during maintenance hot-plug events or lightning-induced coupling. |
Use Scenario: Shielding RS-485 transceivers on telecom base station backhaul links from induced surges on long cable runs. IC Role / Device Role / Timing Role: Placed differential-line-to-ground to suppress common-mode transients while preserving signal integrity. Use Value: Maintains >1 Mbps data rate integrity under 4 kV IEC 61000-4-4 burst testing without bit errors or reset events. |
| Automotive Body Control Module | Smart Meter Communication Port |
|
Use Scenario: Safeguarding LIN bus nodes in vehicle body electronics against load dump and battery reversal transients. IC Role / Device Role / Timing Role: Connected line-to-ground on LIN signal path, leveraging bidirectional response for polarity-agnostic protection. Use Value: Survives 12 V system transients up to 150 °C ambient in engine bay mounting, eliminating need for redundant protection. |
Use Scenario: Securing HPLC (HomePlug AV) or M-Bus communication ports in utility smart meters exposed to grid noise. IC Role / Device Role / Timing Role: Installed on primary-side signal lines entering meter enclosure, meeting IEC 61000-4-5 surge immunity requirements. Use Value: Enables CE-compliant Class B emissions and immunity without adding bulkier MOV-based solutions or derating penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10CA from Vishay (SMCJ10CA) | Same VRM (10 V), higher PPP (1500 W), larger SMC package (7.11 × 6.22 mm vs SMB 3.95 × 5.60 mm) | Requires PCB redesign; better suited for high-energy surge zones like AC mains entry | Select when surge energy exceeds 600 W and board space allows larger footprint |
| P6SMB10CA from ON Semiconductor | Identical VRM (10 V), same SMB package, but higher VCL (17.5 V @ 35.3 A) and lower PPP (600 W) | Marginally reduced clamping performance; UL497B not claimed in latest datasheet | Acceptable where UL497B is not mandated and 0.5 V clamping delta is tolerable |
Compared with SMBJ10CA-TR, the Vishay SMCJ10CA offers higher surge margin at cost of board area, while the ON Semiconductor P6SMB10CA matches form factor but lacks UL497B validation and exhibits slightly weaker clamping - making the ST part optimal for safety-critical isolated-loop designs.
Availability
SMBJ10CA-TR is available at Aetrix Electronics and suitable for industrial automation interfaces, telecom line cards, automotive body electronics, and smart metering systems requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ10CA-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 automotive, industrial, power, and analog/mixed-signal solutions with vertical manufacturing and broad IP portfolio.
The SMBJ series belongs to ST's Transient Voltage Suppressor product line, engineered specifically for high-reliability ESD and surge protection in industrial and telecom infrastructure where low leakage, thermal stability, and safety certification are mandatory.
FAQ
What is the difference between SMBJ10A and SMBJ10CA?
SMBJ10A is unidirectional - it clamps only in reverse bias and conducts forward current like a standard diode. SMBJ10CA is bidirectional, providing symmetrical clamping for both positive and negative transients without polarity constraints. The 'CA' suffix explicitly denotes bidirectional functionality per ST's marking convention and electrical characterization.
Does SMBJ10CA-TR meet RoHS and REACH requirements?
Yes - SMBJ10CA-TR is manufactured in ST's ECOPACK2-compliant facilities, meeting RoHS Directive 2011/65/EU (Pb-free matte tin plating) and REACH SVHC thresholds. Full material declarations and CoC are available via ST's quality portal using order code SMBJ10CA-TR.
Can SMBJ10CA-TR be used in parallel for higher surge current handling?
No - parallel connection is not recommended due to mismatched dynamic resistance and VBR tolerance (±5%), which causes current imbalance and premature failure of one device. For higher IPP, select a higher-power TVS (e.g., 1.5KE10CA) or use staged protection with upstream current-limiting resistors.
What is the thermal resistance (Rth j-a) for SMBJ10CA-TR on a standard FR4 PCB?
On a 1 cm² copper pad per lead (per Figure 12), Rth j-a is 4.5 °C/W for SMBJ10CA-TR. With the recommended IPC7531 footprint (2.07 × 5.84 mm pads), measured Rth j-a is ~5.2 °C/W - enabling safe 600 W pulse dissipation only for short durations (<100 ms) at Tamb ≤ 75 °C.
SMBJ10CA-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):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 37A
- 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
SMBJ10CA-TR FAQ
1.How can I place an order for SMBJ10CA-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ10CA-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 SMBJ10CA-TR reliable?
The price and inventory of SMBJ10CA-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ10CA-TR is usually 5 days.
3.What payment methods are accepted for SMBJ10CA-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ10CA-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ10CA-TR?
SMBJ10CA-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ10CA-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 SMBJ10CA-TR?
For technical support, including SMBJ10CA-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ10CA-TR requirements.
6.How does Aetrix verify that SMBJ10CA-TR is sourced from the original manufacturer or authorized distributors?
All SMBJ10CA-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 SMBJ10CA-TR meets industry standards.
7.What is the process for return or replacement of SMBJ10CA-TR?
All SMBJ10CA-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ10CA-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 SMBJ10CA-TR part is unused and in its original packaging.
Return procedure for SMBJ10CA-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ10CA-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
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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