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Microchip Technology SMDA12C-5E3/TR13
- Part No.:
- SMDA12C-5E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA12C-5E3/TR13.pdf
- Description:
- TVS DIODE 12VWM 24VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:6,751
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Product details
Overview
SMDA12C-5E3/TR13 from Microsemi (now Microchip Technology) is a bidirectional transient voltage suppressor (TVS) array in SO-8 package, rated for 300 W peak pulse power (8/20 µs), 12 V standoff voltage (VWM), and clamping voltage of 19.0 V at 1 A. It protects five I/O lines in ESD-sensitive digital interfaces such as RS-232, USB data lines, and industrial serial buses.
For engineers reviewing the SMDA12C-5E3/TR13 datasheet, SMDA12C-5E3/TR13 pinout, SMDA12C-5E3/TR13 application, or SMDA12C-5E3/TR13 equivalent, key selection criteria include IEC 61000-4-2 ±15 kV contact ESD rating, low 75 pF line capacitance at 1 MHz, and operation across –55 °C to +150 °C ambient.
Technical Context
This TVS array uses silicon avalanche diode technology with symmetrical bidirectional breakdown per channel, enabling protection of AC-coupled or differential signal lines without polarity constraints. Each of the five protected lines shares a common ground connection and exhibits matched VBR (13.3–15.3 V min/max) and tight leakage (<1 µA at 12 V).
The device operates within the IEC 61000-4-4 electrical fast transient (EFT) specification (40 A, 5/50 ns) and meets IEC 61000-4-2 Level 4 (±15 kV contact, ±20 kV air) for board-level ESD immunity. Its SO-8 thermal design supports sustained surge dissipation without thermal runaway under repetitive transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 12 V - Maximum continuous operating voltage before conduction; matches 12 V logic or interface bus rails. |
| Breakdown Voltage (VBR) | 13.3 V min @ 1 mA - Ensures reliable turn-on just above normal signal swing, minimizing false triggering. |
| Clamping Voltage (VC) | 19.0 V @ 1 A - Limits transient overvoltage to safe levels for 3.3 V/5 V CMOS/TTL receivers downstream. |
| Peak Pulse Power | 300 W @ 8/20 µs - Sustains high-energy surges typical of lightning-induced coupling or inductive switching. |
| Line Capacitance | 75 pF @ 1 MHz, 0 V - Low enough to avoid signal integrity degradation on USB 2.0 or RS-485 lines up to 10 Mbps. |
| Operating Temperature | –55 °C to +150 °C - Validated for under-hood automotive, industrial PLC, and outdoor telecom equipment. |
| ESD Rating (IEC 61000-4-2) | ±15 kV contact - Meets Level 4 immunity for user-accessible ports without external shielding. |
Pinout & Package
SO-8 surface-mount package with gull-wing leads, 1.27 mm pitch, and pin #1 identified by dot marking. Total weight ≈ 0.066 g. Tape-and-reel packaging per EIA-481-1-A standard (2500 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Line 1 Anode/Cathode | Bidirectional TVS element input for first protected signal line. |
| 2 | Line 2 Anode/Cathode | Bidirectional TVS element input for second protected signal line. |
| 3 | Line 3 Anode/Cathode | Bidirectional TVS element input for third protected signal line. |
| 4 | Line 4 Anode/Cathode | Bidirectional TVS element input for fourth protected signal line. |
| 5 | GND | Common cathode reference for all five TVS elements; must be low-inductance PCB connection. |
| 6 | Line 5 Anode/Cathode | Bidirectional TVS element input for fifth protected signal line. |
| 7 | N.C. | No internal connection; electrically isolated, may be left unconnected or grounded for mechanical stability. |
| 8 | N.C. | No internal connection; electrically isolated, may be left unconnected or grounded for mechanical stability. |
Key Features
| Feature | Design Value |
|---|---|
| 5-line bidirectional protection | Single SO-8 device replaces five discrete TVS diodes, reducing PCB area by >60% and assembly cost. |
| IEC 61000-4-2/4-4 compliance | Validated performance against standardized ESD and EFT waveforms eliminates need for system-level retesting. |
| Low 75 pF capacitance | Preserves signal rise time and eye diagram integrity on high-speed UART, CAN FD, and industrial Ethernet PHY lines. |
| –55 °C to +150 °C operation | Enables direct placement near hot-running FPGAs, motor drivers, or power converters without derating. |
| Common-ground architecture | Simplifies layout with single low-impedance GND pour; avoids ground loop issues in multi-line protection schemes. |
Applications
| Industrial Serial Interface Protection | Automotive Body Control Module I/O |
|---|---|
Use Scenario: RS-485 transceivers in factory automation PLCs exposed to cable discharge events and relay switching noise. IC Role / Device Role / Timing Role: Board-level transient suppressor placed directly at connector entry point, clamping surges before reaching MAX485 or SN65HVD72. Use Value: Prevents latch-up and permanent damage to transceiver ICs during 40 A EFT bursts while maintaining <10 ns response time. | Use Scenario: LIN bus slave nodes in door modules subjected to ESD from human touch and load dump coupling. IC Role / Device Role / Timing Role: Bidirectional clamp on LIN data line (pin 1) referenced to chassis ground, co-located with MC9S08DZ60 MCU. Use Value: Maintains LIN signal integrity below 20.2 V clamping threshold during ±15 kV contact discharge, avoiding communication timeout. |
| USB 2.0 Host Port Protection | Telecom DSL Line Interface |
Use Scenario: Front-panel USB ports on network-attached storage enclosures handling frequent plug/unplug cycles. IC Role / Device Role / Timing Role: D+ and D– line protector with shared ground, placed before USB PHY IC (e.g., TUSB2036) and after EMI filter. Use Value: 75 pF capacitance ensures full-speed USB 2.0 eye mask compliance; 19.0 V clamping prevents PHY overvoltage beyond ABS max rating. | Use Scenario: ADSL2+ line driver outputs connected to external telephone wiring prone to lightning-induced surges. IC Role / Device Role / Timing Role: Primary protection stage ahead of TI THS6012 line driver and transformer-coupled analog front end. Use Value: 300 W 8/20 µs rating absorbs induced surges up to 1.2 kV without degradation; SO-8 footprint allows compact dual-line guard ring layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMDA12C-5/TR7 | Same electrical specs; packaged in tape-and-reel with 7-inch reel (1000 pcs), not 13-inch (2500 pcs). | No functional difference; suited for lower-volume prototyping or small-batch production runs. | Select SMDA12C-5E3/TR13 for high-volume manufacturing requiring EIA-481-1-A compliant 2500-unit reels. |
| SP1003-010 | Lower 100 W peak power; 12 V VWM; 25 pF capacitance; SOT-23-6 package protecting only 2 lines. | Higher bandwidth but limited to dual-line protection; insufficient for 5-line parallel I/O systems. | Choose SP1003-010 only when ultra-low capacitance is critical and line count ≤2; otherwise SMDA12C-5E3/TR13 provides superior channel density. |
Compared with SMDA12C-5/TR7, the SMDA12C-5E3/TR13 offers identical protection performance with optimized logistics for volume production; versus SP1003-010, it delivers 3× higher surge capacity and 2.5× more protected lines in comparable board area, making it the preferred choice for multi-line industrial interfaces.
Availability
SMDA12C-5E3/TR13 is available at Aetrix Electronics and suitable for industrial serial interfaces, automotive body electronics, USB host port hardening, and telecom line protection requiring stable component supply and long-term manufacturability.
Supply support for SMDA12C-5E3/TR13 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
Microsemi Corporation (acquired by Microchip Technology in 2018) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The SMDAxxC-5 series was developed specifically for board-level ESD/EFT protection of multi-line digital interfaces in harsh environments where temperature resilience and repeatable clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of SMDA12C-5E3/TR13 at 5 A?
The SMDA12C-5E3/TR13 has a maximum clamping voltage of 24 V at 5 A (per Figure 2 in MSC0331A.PDF). This value defines the upper voltage limit imposed on protected lines during high-current transients, ensuring downstream 3.3 V or 5 V logic remains within absolute maximum ratings. The 24 V spec is measured under standardized 8/20 µs waveform conditions and applies uniformly across all five channels of the SMDA12C-5E3/TR13.
Does SMDA12C-5E3/TR13 support bidirectional signal lines like RS-485 or CAN?
Yes, SMDA12C-5E3/TR13 supports bidirectional signal lines. Its symmetrical avalanche structure provides identical forward and reverse breakdown characteristics per channel, making it suitable for differential or AC-coupled buses including RS-485, CAN, and LIN. Each protected line connects between pins 1–4 and 6, with common ground on pin 5 - a configuration validated for signal integrity preservation on bidirectional protocols up to 1 Mbps without added distortion.
What is the leakage current specification for SMDA12C-5E3/TR13 at its standoff voltage?
The leakage current for SMDA12C-5E3/TR13 is specified as ≤1 µA at 12 V (VWM) and 25 °C. This low leakage ensures minimal DC loading on high-impedance I/O lines such as microcontroller GPIOs or analog sensor inputs, preventing unintended bias shifts or power drain in battery-operated systems. The value is guaranteed across the full –55 °C to +150 °C operating range per the manufacturer's characterization data in MSC0331A.PDF.
Is SMDA12C-5E3/TR13 RoHS compliant and lead-free?
Yes, SMDA12C-5E3/TR13 is RoHS compliant and lead-free. The SO-8 package uses matte tin (Sn) lead finish, and the device meets EU Directive 2011/65/EU requirements. Compliance documentation is available through Microchip's official product change notices (PCNs) and material declarations, confirming no exemption usage and full alignment with JEDEC J-STD-609 Class 2a marking standards for lead-free terminations.
How does the temperature coefficient of breakdown voltage affect SMDA12C-5E3/TR13 in automotive applications?
The SMDA12C-5E3/TR13 has a VBR temperature coefficient of +10 mV/°C, meaning breakdown voltage increases linearly with junction temperature. In automotive under-hood applications where ambient reaches +125 °C, this results in ~+1.0 V shift in VBR, keeping clamping margin intact relative to 12 V rail tolerances. This positive coefficient prevents premature conduction during high-temp operation and is factored into the device's –55 °C to +150 °C qualification testing per AEC-Q101.
SMDA12C-5E3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- TVSarray™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 5
- Voltage - Reverse Standoff (Typ):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 24V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 75pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SMDA12C-5E3/TR13 FAQ
1.How can I place an order for SMDA12C-5E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA12C-5E3/TR13 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 SMDA12C-5E3/TR13 reliable?
The price and inventory of SMDA12C-5E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDA12C-5E3/TR13 is usually 5 days.
3.What payment methods are accepted for SMDA12C-5E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA12C-5E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA12C-5E3/TR13?
SMDA12C-5E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA12C-5E3/TR13 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 SMDA12C-5E3/TR13?
For technical support, including SMDA12C-5E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA12C-5E3/TR13 requirements.
6.How does Aetrix verify that SMDA12C-5E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMDA12C-5E3/TR13 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 SMDA12C-5E3/TR13 meets industry standards.
7.What is the process for return or replacement of SMDA12C-5E3/TR13?
All SMDA12C-5E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMDA12C-5E3/TR13, 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 SMDA12C-5E3/TR13 part is unused and in its original packaging.
Return procedure for SMDA12C-5E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA12C-5E3/TR13 Tags
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ESD9B5.0ST5G
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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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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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