My Inquiry
My Account
STMicroelectronics SMC50J5.0CA
- Part No.:
- SMC50J5.0CA
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC50J5.0CA.pdf
- Description:
- Linear IC's
- Quantity:
- Payment:
- Shipping:
Inventory:3,012
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMC50J5.0CA from STMicroelectronics is a bidirectional 5.0 V standoff transient voltage suppression (TVS) diode in SMC package, rated for 5000 W peak pulse power (10/1000 µs), 30 kV ESD immunity (IEC 61000-4-2), and 4 kV EFT protection (IEC 61000-4-4). It clamps to 9.2 V at 544 A surge current and operates up to 175 °C junction temperature, deployed in DC power rail protection for industrial PLC I/O modules.
For engineers reviewing the SMC50J5.0CA datasheet, SMC50J5.0CA pinout, SMC50J5.0CA application, or SMC50J5.0CA equivalent, key selection criteria include bidirectional clamping symmetry, low leakage (0.2 µA at 25 °C), JEDEC-registered SMC footprint compatibility, and validated 8/20 µs surge capability up to 14.4 A with dynamic resistance of 3.42 mΩ.
Technical Context
This TVS diode uses planar silicon junction technology to achieve precise breakdown voltage control (VBR = 5.0–6.74 V), low capacitance (<1000 nF at 1 V), and stable clamping performance across -55 °C to +175 °C operating range. Its bidirectional configuration enables symmetric overvoltage protection on AC-coupled or floating signal lines without polarity dependency.
The device complies with IEC 61000-4-2 Level 4 (30 kV air/contact discharge), IEC 61000-4-4 Level 4 (4 kV), and MIL-STD-883 Method 3015. Thermal design leverages SMC package's low junction-to-ambient thermal resistance (≤120 °C/W on recommended FR4 footprint) for sustained surge handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 5.0 V - Maximum continuous reverse working voltage before conduction begins. |
| Breakdown Voltage (VBR) | 6.4–6.74 V at 1 mA - Confirmed minimum/typical threshold where avalanche conduction initiates reliably. |
| Clamping Voltage (VCL) | 9.2 V at 544 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge event. |
| Peak Pulse Power | 5000 W (10/1000 µs) - Sustained energy absorption capacity under standard lightning surge waveform. |
| Leakage Current (IR) | 0.2 µA at 5.0 V, 25 °C - Minimal parasitic loading on low-power sensor or reference circuits. |
| Junction Temperature Range | -55 to +175 °C - Enables deployment in high-temperature industrial enclosures without derating. |
| ESD Withstand | 30 kV contact & air discharge (IEC 61000-4-2) - Meets highest immunity level for human-body-model surges. |
Pinout & Package
SMC50J5.0CA is housed in a JEDEC-registered SMC (DO-214AB) surface-mount package with matte tin-plated leads, 264 mg unit weight, and IPC7531-compliant footprint. The bidirectional structure has no anode/cathode polarity; both terminals function identically.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Surge current path terminal | Both terminals conduct equally during positive or negative transients-no orientation required during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR, VCL, and IPP for ± polarity surges-enables single-device protection of AC or floating lines. |
| Low dynamic resistance | 3.42 mΩ - Minimizes clamping voltage rise under high-current surges, improving protection margin. |
| High-temperature operation | 175 °C max Tj - Maintains specified surge ratings in thermally constrained environments like motor drives. |
| Ultra-low leakage | 0.2 µA at VRWM - Prevents signal distortion or bias shift in precision analog front-ends and sensor interfaces. |
| JEDEC-compliant SMC outline | Standardized mechanical dimensions (E = 7.75–8.15 mm, D = 5.55–6.25 mm) - Ensures automated placement and reflow compatibility. |
Applications
| Industrial PLC Analog I/O Protection | Automotive Body Control Module (BCM) Power Rails |
|---|---|
|
Use Scenario: Protecting 0–10 V analog input channels from induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between signal line and ground, responding within <1 ns to transients. Use Value: Limits voltage excursion to ≤9.2 V during 5000 W surges, preserving ADC integrity and preventing microcontroller latch-up. |
Use Scenario: Safeguarding 12 V supply inputs in BCM ECUs exposed to load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary surge suppressor on main power rail, absorbing energy before downstream LDOs or MCUs. Use Value: Withstands 4 kV EFT bursts (IEC 61000-4-4) and maintains <0.2 µA leakage to avoid battery drain in sleep mode. |
| Telecom Remote PHY Node Power Inputs | Medical Patient Monitoring Signal Conditioning |
|
Use Scenario: Shielding 48 V DC power feeds in distributed cable access nodes from lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS after primary GDT or MOV, providing fast-response clamping near powered components. Use Value: Delivers 5000 W (10/1000 µs) dissipation with 3.42 mΩ RD, reducing clamping overshoot versus higher-RD alternatives. |
Use Scenario: Protecting isolated ECG/EEG front-end amplifiers from ESD events during patient contact. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on differential sensor inputs referenced to isolated ground. Use Value: 0.2 µA leakage prevents DC offset drift; 30 kV ESD rating exceeds IEC 60601-1-2 clinical immunity requirements. |
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 (STMicroelectronics) | Lower peak power: 600 W (10/1000 µs); same VRWM/VCL; SMB package (smaller footprint, higher thermal resistance). | Suitable only for sub-1 kW surge environments; not recommended for industrial mains-connected equipment. | Select when board space is critical and surge threat level is limited to IEC 61000-4-2 only. |
| SAC5.0 (Littelfuse) | Same 5.0 V VRWM, but unidirectional; requires external series resistor or dual-device layout for bidirectional coverage. | Increases BOM count and PCB area; introduces asymmetry in clamping response for AC signals. | Choose only if system architecture mandates unidirectional devices or legacy design reuse is required. |
Compared with SMBJ5.0CA and SAC5.0, SMC50J5.0CA provides 8.3× higher surge power handling and true single-device bidirectionality-critical for protecting floating or AC-coupled interfaces in harsh industrial settings without layout compromise.
Availability
SMC50J5.0CA is available at Aetrix Electronics and suitable for industrial PLC analog I/O protection, automotive BCM power rails, telecom remote PHY node power inputs, and medical patient monitoring signal conditioning requiring stable component supply and long-term lifecycle support.
Supply support for SMC50J5.0CA 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, designing and manufacturing microcontrollers, power ICs, sensors, and discrete protection devices for industrial, automotive, and consumer markets.
The SMC50J TVS series targets high-reliability surge protection in space-constrained, high-temperature applications-specifically engineered for robustness against IEC 61000-4-2/4-4 threats in industrial automation and transportation systems.
FAQ
What is the difference between SMC50J5.0A and SMC50J5.0CA?
SMC50J5.0A is unidirectional (anode-cathode polarity sensitive), while SMC50J5.0CA is bidirectional-both terminals behave identically under positive or negative transients. The 'CA' suffix denotes symmetrical clamping, essential for AC-coupled or floating signal lines where polarity cannot be guaranteed.
Can SMC50J5.0CA replace P6KE5.0CA in existing designs?
No-P6KE5.0CA is a through-hole DO-15 device rated for 600 W (10/1000 µs), whereas SMC50J5.0CA delivers 5000 W in SMC package. Direct replacement requires PCB footprint redesign, thermal validation, and verification of clamping voltage match (9.2 V vs. ~9.5 V), but offers 8.3× higher surge capacity.
Does SMC50J5.0CA meet AEC-Q200 for automotive use?
SMC50J5.0CA is not AEC-Q200 qualified. While it meets IEC 61000-4-2/4-4 and operates up to 175 °C, ST does not list it in their AEC-Q200 stress-tested portfolio. For automotive-grade qualification, consider ST's Automotive TVS series such as SMAJ5.0A-Q or SMBJ5.0A-Q.
How does junction temperature affect clamping voltage?
VCL increases with junction temperature at 10⁻⁴/°C coefficient: VCL(Tj) = VCL(25 °C) × [1 + αT × (Tj − 25)]. At 150 °C, VCL rises ~1.25% to ~9.3 V-still within safe margin for 5 V logic rails, but must be factored into worst-case transient analysis.
SMC50J5.0CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AB, SMC
- Series:
- SMC50J
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 544A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
SMC50J5.0CA FAQ
1.How can I place an order for SMC50J5.0CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC50J5.0CA 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 SMC50J5.0CA reliable?
The price and inventory of SMC50J5.0CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC50J5.0CA is usually 5 days.
3.What payment methods are accepted for SMC50J5.0CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC50J5.0CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC50J5.0CA?
SMC50J5.0CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC50J5.0CA 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 SMC50J5.0CA?
For technical support, including SMC50J5.0CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC50J5.0CA requirements.
6.How does Aetrix verify that SMC50J5.0CA is sourced from the original manufacturer or authorized distributors?
All SMC50J5.0CA 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 SMC50J5.0CA meets industry standards.
7.What is the process for return or replacement of SMC50J5.0CA?
All SMC50J5.0CA units undergo pre-shipment inspection (PSI). If there is an issue with SMC50J5.0CA, 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 SMC50J5.0CA part is unused and in its original packaging.
Return procedure for SMC50J5.0CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC50J5.0CA Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
