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Microchip Technology SMDA03C-7E3/TR13
- Part No.:
- SMDA03C-7E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA03C-7E3/TR13.pdf
- Description:
- TVS DIODE 3.3VWM 9VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:7,411
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Product details
Overview
SMDA03C-7E3/TR13 from Diodes Incorporated is a 7-channel bidirectional transient voltage suppressor (TVS) array in SO-8 package, rated for 300 W peak pulse power (8/20 µs), 3.3 V standoff voltage (VWM), and clamping ≤7 V at 1 A. It protects I/O transceivers, microprocessors, and memory interfaces against ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges.
For engineers reviewing the SMDA03C-7E3/TR13 datasheet, SMDA03C-7E3/TR13 pinout, SMDA03C-7E3/TR13 application, or SMDA03C-7E3/TR13 equivalent, key selection criteria include bidirectional line count (7), VWM = 3.3 V, clamping performance at 1 A and 5 A, SO-8 thermal and layout compatibility, and board-level surge compliance per IEC standards.
Technical Context
This TVS array employs silicon avalanche diode technology with integrated common-cathode configuration across seven bidirectional channels. Each channel provides symmetrical clamping in both polarities, enabling protection of data lines without polarity constraints.
Designed for board-level I/O protection, it operates over –55 °C to +150 °C and supports tape-and-reel packaging (EIA-481-1-A, 2500 pcs/reel). Its 300 W peak power rating applies strictly to the standardized 8/20 µs current waveform per Figure 1 of MSC0888.PDF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 3.3 V - Maximum continuous operating voltage before conduction; must exceed circuit's peak signal voltage. |
| Breakdown Voltage (VBR) | 4.0 V min @ 1 mA - Guaranteed avalanche initiation threshold for reliable triggering. |
| Clamping Voltage (VC) | 7.0 V max @ 1 A - Limits transient voltage seen by protected IC during 1 A surge event. |
| Peak Pulse Power | 300 W @ 8/20 µs - Sustains high-energy transients without failure per IEC test waveforms. |
| Leakage Current (ID) | 200 µA max @ VWM - Minimal DC loading on low-voltage data lines at rated standoff. |
| Capacitance (C) | 300 pF typ @ 0 V, 1 MHz - Measured per-line capacitance affecting high-speed signal integrity. |
| Operating Temp Range | –55 °C to +150 °C - Enables use in automotive under-hood and industrial control environments. |
Pinout & Package
Molded SO-8 surface-mount package (JEDEC MS-012AC), 0.150" body width, 0.050" lead pitch, marked with logo, "SDL7", and date code; Pin 1 identified by dot on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Channel 1 | Input terminal for first bidirectional line; connects to protected I/O trace. |
| 2 | Cathode Common | Shared cathode node for all 7 channels; ties to system ground plane for low-inductance return path. |
| 3 | Anode of Channel 2 | Input terminal for second bidirectional line; electrically isolated from other anodes. |
| 4 | Anode of Channel 3 | Input terminal for third bidirectional line; maintains independent surge path per line. |
| 5 | Anode of Channel 4 | Input terminal for fourth bidirectional line; enables parallel protection of multi-lane interfaces. |
| 6 | Anode of Channel 5 | Input terminal for fifth bidirectional line; supports differential or single-ended bus protection. |
| 7 | Anode of Channel 6 | Input terminal for sixth bidirectional line; matches layout symmetry of SO-8 footprint. |
| 8 | Anode of Channel 7 | Input terminal for seventh bidirectional line; completes full 7-line coverage in compact SO-8 form factor. |
Key Features
| Feature | Design Value |
|---|---|
| 7-channel bidirectional protection | Enables simultaneous safeguarding of 7 independent data or control lines without external polarity management. |
| IEC 61000-4-2 / -4-4 compliant | Validated to withstand ±8 kV contact / ±15 kV air discharge ESD and 4 kV EFT bursts per standard test methods. |
| SO-8 surface-mount package | Provides mechanical robustness and thermal dissipation suitable for automated PCB assembly and reflow profiles. |
| Low leakage at 3.3 V | 200 µA max ensures minimal impact on battery-powered or low-power logic circuits operating near VWM. |
| –55 °C to +150 °C operation | Supports deployment in extended-temperature environments including automotive engine control units and industrial PLCs. |
Applications
| USB 2.0 Interface Protection | Industrial RS-485 Transceiver Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of embedded USB 2.0 ports against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Board-level TVS array clamping fast-rising transients before they reach the USB PHY IC. Use Value: Prevents latch-up or gate oxide damage in 3.3 V USB transceivers while maintaining signal integrity via 300 pF typical line capacitance. | Use Scenario: Safeguarding differential A/B lines and enable/disable pins of RS-485 transceivers in factory automation networks. IC Role / Device Role / Timing Role: Bidirectional surge suppression on all 7 pins connected to field-wired communication buses exposed to EFT and lightning coupling. Use Value: Ensures uninterrupted serial communication by limiting transient voltages to ≤7 V at 1 A, below RS-485 receiver input absolute maximum ratings. |
| Embedded Memory Card Slot (SDIO) | Automotive Infotainment I/O Protection |
Use Scenario: Shielding SDIO command, clock, and data lines (CMD, CLK, DAT0–DAT3) in portable medical devices. IC Role / Device Role / Timing Role: Multi-line TVS array placed at card-edge connector to absorb ESD from user handling before signals enter host controller. Use Value: Maintains 3.3 V logic compatibility and meets IEC 61000-4-2 Level 4 (±8 kV contact) without degrading 25 MHz SDIO timing margins. | Use Scenario: Protecting touchscreen controller, audio codec, and CAN/LIN interface pins in vehicle infotainment head units. IC Role / Device Role / Timing Role: Single-device solution for 7 mixed-signal I/O lines subject to load-dump and ISO 7637-2 transient coupling. Use Value: Operates reliably from –40 °C to +105 °C ambient and clamps secondary lightning surges to <9 V at 5 A, preserving downstream analog front-end functionality. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMDA03C-7 | No "E3/TR13" suffix; same electrical specs, SO-8 package, but unspecified tape-and-reel quantity and marking variant. | Identical protection function; differs only in packaging detail (TR13 denotes 13-inch reel, 2500 pcs). | Select SMDA03C-7E3/TR13 when volume production requires EIA-481-compliant 13″ reels with traceable lot coding. |
| SP1003-03HTG | 3.3 V VWM, 7-line bidirectional SO-8 TVS, but rated 200 W peak power and 120 pF capacitance per line. | Better high-frequency response due to lower capacitance; less robust against high-energy 8/20 µs surges. | Choose SP1003-03HTG where signal bandwidth >100 MHz dominates; retain SMDA03C-7E3/TR13 for higher surge immunity in industrial settings. |
Compared with SMDA03C-7E3/TR13, the base SMDA03C-7 offers identical protection performance but lacks defined reel packaging, while SP1003-03HTG trades 33% lower peak power for reduced line capacitance-making SMDA03C-7E3/TR13 optimal for cost-sensitive, high-surge industrial I/O protection where 300 W rating and SO-8 layout reuse are critical.
Availability
SMDA03C-7E3/TR13 is available at Aetrix Electronics and suitable for industrial RS-485 networks, automotive infotainment I/O, and embedded USB 2.0 interfaces requiring stable component supply, long-term lifecycle support, and EIA-481-compliant tape-and-reel delivery.
Supply support for SMDA03C-7E3/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
Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in protection, signal integrity, and power management solutions for industrial, computing, and automotive markets.
The SMDAxxC-7 series was developed specifically for board-level transient suppression of high-pin-count digital interfaces, balancing low clamping voltage, multi-line integration, and SO-8 manufacturability for cost-effective ESD/EFT hardening.
FAQ
What is the standoff voltage (VWM) of the SMDA03C-7E3/TR13?
The SMDA03C-7E3/TR13 has a standoff voltage (VWM) of 3.3 V, meaning it remains non-conductive up to this DC or continuous peak AC voltage. This value ensures compatibility with 3.3 V logic systems while providing margin above typical signal swing. Exceeding VWM risks premature conduction; therefore, circuit operating voltage must stay at or below 3.3 V for reliable SMDA03C-7E3/TR13 operation.
Does the SMDA03C-7E3/TR13 meet IEC 61000-4-2 ESD requirements?
Yes, the SMDA03C-7E3/TR13 is designed and characterized to meet IEC 61000-4-2 Level 4 (±8 kV contact discharge, ±15 kV air discharge). Its clamping behavior and low leakage ensure protected circuits remain functional after repeated ESD events. Test validation is documented in the MSC0888.PDF datasheet, confirming SMDA03C-7E3/TR13 suitability for ESD-critical interfaces like USB and SDIO.
How many lines does the SMDA03C-7E3/TR13 protect, and what is its configuration?
The SMDA03C-7E3/TR13 protects exactly seven bidirectional data or interface lines using a common-cathode SO-8 configuration. Pins 1, 3–8 serve as individual anodes for each line, while Pin 2 is the shared cathode tied to ground. This architecture allows symmetrical clamping for both positive and negative transients on each line without external components, making SMDA03C-7E3/TR13 ideal for compact multi-line I/O protection.
What is the peak pulse power rating of the SMDA03C-7E3/TR13, and under what conditions?
The SMDA03C-7E3/TR13 is rated for 300 W peak pulse power under the standardized 8/20 µs current waveform, as defined in IEC 61000-4-5 Annex A. This rating applies per channel and assumes proper PCB layout with low-inductance grounding. The 300 W value reflects energy-handling capability during short-duration surges such as lightning-induced transients, and is validated in Figure 1 of the MSC0888.PDF datasheet for SMDA03C-7E3/TR13.
Is the SMDA03C-7E3/TR13 suitable for automotive applications?
Yes, the SMDA03C-7E3/TR13 supports operating temperatures from –55 °C to +150 °C and meets IEC 61000-4-2 and -4-4 immunity standards, making it suitable for under-hood and infotainment applications. Its SO-8 package and robust clamping (≤7 V @ 1 A) align with automotive I/O protection needs. However, AEC-Q200 qualification is not claimed in MSC0888.PDF, so SMDA03C-7E3/TR13 should be validated per specific vehicle program requirements before deployment.
SMDA03C-7E3/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:
- 7
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- 4V
- Voltage - Clamping (Max) @ Ipp:
- 9V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 300pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SMDA03C-7E3/TR13 FAQ
1.How can I place an order for SMDA03C-7E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA03C-7E3/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 SMDA03C-7E3/TR13 reliable?
The price and inventory of SMDA03C-7E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDA03C-7E3/TR13 is usually 5 days.
3.What payment methods are accepted for SMDA03C-7E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA03C-7E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA03C-7E3/TR13?
SMDA03C-7E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA03C-7E3/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 SMDA03C-7E3/TR13?
For technical support, including SMDA03C-7E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA03C-7E3/TR13 requirements.
6.How does Aetrix verify that SMDA03C-7E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMDA03C-7E3/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 SMDA03C-7E3/TR13 meets industry standards.
7.What is the process for return or replacement of SMDA03C-7E3/TR13?
All SMDA03C-7E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMDA03C-7E3/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 SMDA03C-7E3/TR13 part is unused and in its original packaging.
Return procedure for SMDA03C-7E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA03C-7E3/TR13 Tags
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ESD9B5.0ST5G
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