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Microchip Technology SMDA03C-5E3/TR13
- Part No.:
- SMDA03C-5E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA03C-5E3/TR13.pdf
- Description:
- TVS DIODE 3.3VWM 9VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:8,007
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Product details
Overview
SMDA03C-5E3/TR13 from Microsemi (now Microchip Technology) is a 5-line 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 TTL/CMOS I/O transceivers, microprocessors, and memory interfaces against ESD per IEC 61000-4-2 (±15 kV air, ±8 kV contact) and EFT per IEC 61000-4-4.
For engineers reviewing the SMDA03C-5E3/TR13 datasheet, SMDA03C-5E3/TR13 pinout, SMDA03C-5E3/TR13 application, or SMDA03C-5E3/TR13 equivalent, key selection criteria include VWM ≥ circuit operating voltage, low clamping voltage under 1–5 A surge, sub-300 pF line capacitance for high-speed data integrity, and SO-8 thermal/power derating compatibility with board-level layout constraints.
Technical Context
This TVS array integrates five identical, symmetrical, bidirectional avalanche diode pairs between I/O lines and ground - no internal series resistance or active control logic. Each channel operates independently with matched VBR (min 4.0 V, max not specified), temperature coefficient of −5 mV/°C, and leakage <200 µA at 3.3 V.
Clamping performance is characterized at 1 A (≤7 V) and 5 A (≤9 V) using standardized 8/20 µs current pulses; it does not include integrated overcurrent protection or status signaling. The device relies on PCB trace inductance and system grounding to achieve effective transient energy diversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 3.3 V - maximum continuous DC or RMS operating voltage each line can sustain without conduction |
| Breakdown Voltage (VBR) | 4.0 V min @ 1 mA - guaranteed avalanche initiation threshold across all five channels |
| Clamping Voltage (VC) | ≤7 V @ 1 A - maximum voltage seen by protected IC during 8/20 µs surge, preserving TTL/CMOS logic thresholds |
| Peak Pulse Power | 300 W @ 8/20 µs - energy-handling capacity per channel, derated above +85°C ambient |
| Line Capacitance | 300 pF @ 0 V, 1 MHz - limits signal rise time degradation on ≤10 Mbps digital buses |
| Operating Temp Range | −55°C to +150°C - supports automotive under-hood and industrial control environments |
| ESD Rating | ±15 kV air, ±8 kV contact (IEC 61000-4-2) - meets Level 4 immunity for external I/O ports |
Pinout & Package
SO-8 surface-mount package (JEDEC MS-012AC), 4.9 mm × 6.0 mm footprint, 1.75 mm max height, pin #1 marked by dot. Molded plastic body with gull-wing leads; RoHS-compliant matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5 | I/O Channel Anode/Cathode Pair | Five independent bidirectional TVS paths - each pin connects to one protected line and shares common ground reference |
| 6, 7, 8 | Ground (GND) | Three dedicated ground pins - low-inductance return path for surge current; must be tied to solid ground plane |
| NC (Pin 6–8 not isolated) | No Connect / Ground | Pins 6–8 are internally bonded to GND; used for mechanical stability and thermal dissipation, not functional isolation |
Key Features
| Feature | Design Value |
|---|---|
| 5-channel bidirectional protection | Enables single-device safeguarding of full 5-line interface (e.g., USB D+/D−, UART TX/RX, RTS/CTS + GND-return) |
| 300 W peak pulse rating | Withstands repeated 8/20 µs surges up to 15 A without parametric shift or failure under proper PCB layout |
| 3.3 V standoff voltage | Matches 3.3 V logic families (e.g., ARM Cortex-M I/O, SPI flash, SDIO) without false triggering during normal operation |
| −5 mV/°C VBR tempco | Ensures stable clamping margin over full industrial temperature range - critical for automotive infotainment modules |
| SO-8 mechanical standardization | Allows drop-in replacement in existing layouts designed for similar TVS arrays (e.g., SMAJ5.0A, P6SMB5.0A variants) |
Applications
| USB 2.0 Host Port Protection | Industrial RS-485 Transceiver Interface |
|---|---|
Use Scenario: Protecting upstream USB 2.0 host controller pins (VBUS, D+, D−, ID, GND) from ESD events during cable insertion and hot-plug operations. IC Role / Device Role / Timing Role: Board-level transient suppressor placed immediately adjacent to USB connector, shunting surge current to chassis ground before reaching PHY IC. Use Value: Prevents latch-up or gate oxide damage in USB transceivers (e.g., TUSB2036) while maintaining <1 ns response time and ≤300 pF loading on 480 Mbps differential signals. | Use Scenario: Safeguarding RS-485 transceivers (e.g., MAX13487E) in factory automation nodes exposed to motor drive noise and lightning-induced ground potential differences. IC Role / Device Role / Timing Role: Common-mode and differential-mode TVS clamp on A/B bus lines and receiver enable/control pins relative to local signal ground. Use Value: Maintains signal integrity under ±1 kV EFT bursts (IEC 61000-4-4) and prevents permanent damage to half-duplex transceiver inputs during 4 kV surge tests. |
| Automotive Body Control Module I/O | Medical Patient Monitor Sensor Interface |
Use Scenario: Protecting LIN bus, switch inputs, and LED driver control lines in BCMs subjected to ISO 16750-2 load dump and ISO 7637-2 pulse 1/2/3a/b transients. IC Role / Device Role / Timing Role: Primary front-end suppression for 12 V nominal circuits operating down to 3.3 V logic levels after regulation. Use Value: Clamps transients to <9 V at 5 A, ensuring downstream 3.3 V MCU GPIOs remain within absolute maximum ratings during battery disconnection events. | Use Scenario: Shielding analog sensor inputs (ECG, SpO₂) and digital communication lines (I²C to ADC) in Class II medical devices requiring IEC 60601-1-2 4th Ed. ESD immunity. IC Role / Device Role / Timing Role: Low-capacitance, low-leakage TVS on patient-connected signal paths to avoid DC offset drift or noise coupling into µV-level bio-amplifiers. Use Value: Delivers <200 µA leakage at 3.3 V and 300 pF capacitance - preserves amplifier CMRR and avoids baseline wander in multi-channel acquisition systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ3.3A | Single-line unidirectional TVS; 3.3 V VWM, 13.3 V VBR, 11.2 V VC@10 A; DO-214AC package | Requires five discrete devices + shared ground routing; higher clamping voltage reduces safety margin for 3.3 V logic | Use only when board space allows discrete placement and system tolerates higher clamping voltage |
| SP1003-030 | 5-line bidirectional array; 3.3 V VWM, 4.5 V VBR, 6.8 V VC@1 A; SOT-23-6 package (3 lines) | Only 3 protected lines; smaller footprint but lower power rating (150 W); requires two devices for 5-line coverage | Select when space-constrained and peak surge current remains <7.5 A per line |
Compared with SMAJ3.3A and SP1003-030, the SMDA03C-5E3/TR13 delivers integrated 5-line protection in SO-8 with lowest clamping voltage (≤7 V @1 A) and highest per-channel surge rating (300 W), making it optimal for compact, high-reliability 3.3 V interface designs where layout efficiency and ESD margin are critical.
Availability
SMDA03C-5E3/TR13 is available at Aetrix Electronics and suitable for USB 2.0 host ports, industrial RS-485 nodes, and automotive body control modules requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for SMDA03C-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 TVSarray™ series - including SMDA03C-5E3/TR13 - was engineered specifically for board-level ESD/EFT protection of high-speed digital interfaces in harsh electromagnetic environments, emphasizing low clamping, tight parameter matching, and robust thermal performance in standard surface-mount packages.
FAQ
What is the maximum clamping voltage of SMDA03C-5E3/TR13 at 5 A?
The SMDA03C-5E3/TR13 has a maximum clamping voltage of 9 V at 5 A for an 8/20 µs surge waveform, as specified in the MSC0331A.PDF datasheet Figure 2. This value ensures protected 3.3 V logic circuits remain within safe operating limits during moderate-energy transients. The clamping voltage is measured across each individual I/O line relative to the common ground pins (6–8) under standardized test conditions.
Does SMDA03C-5E3/TR13 support bidirectional signal lines like USB D+ and D−?
Yes, the SMDA03C-5E3/TR13 is explicitly designed as a bidirectional TVS array, with symmetrical avalanche characteristics on all five channels. Its circuit diagram shows back-to-back diode pairs per line, enabling effective suppression of both positive and negative transients - essential for differential interfaces such as USB 2.0 D+ and D−, RS-422, or LVDS buses.
What is the meaning of "TR13" in SMDA03C-5E3/TR13?
The "TR13" suffix in SMDA03C-5E3/TR13 indicates tape-and-reel packaging per EIA-481-1-A standard on a 13-inch reel containing 2,500 units. This is an optional packaging configuration (standard is tube packaging with 95 units); the "E3" denotes lead finish - matte tin over nickel, compliant with RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 3.
Can SMDA03C-5E3/TR13 replace SMDA03C-5 in an existing design?
Yes, SMDA03C-5E3/TR13 is functionally and mechanically identical to SMDA03C-5, differing only in packaging format (tape-and-reel vs. tube) and lead finish specification. Both share identical electrical parameters, SO-8 footprint, pinout, and thermal characteristics. No PCB or schematic changes are required when migrating from SMDA03C-5 to SMDA03C-5E3/TR13 for automated assembly.
What is the leakage current specification for SMDA03C-5E3/TR13 at its standoff voltage?
The SMDA03C-5E3/TR13 exhibits a maximum leakage current of 200 µA at its 3.3 V standoff voltage (VWM) and 25°C ambient temperature, as confirmed in the Electrical Characteristics table of MSC0331A.PDF. This low leakage ensures minimal impact on battery-powered or high-impedance sensor circuits while maintaining reliable turn-off behavior during normal operation.
SMDA03C-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):
- 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-5E3/TR13 FAQ
1.How can I place an order for SMDA03C-5E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA03C-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 SMDA03C-5E3/TR13 reliable?
The price and inventory of SMDA03C-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 SMDA03C-5E3/TR13 is usually 5 days.
3.What payment methods are accepted for SMDA03C-5E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA03C-5E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA03C-5E3/TR13?
SMDA03C-5E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA03C-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 SMDA03C-5E3/TR13?
For technical support, including SMDA03C-5E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA03C-5E3/TR13 requirements.
6.How does Aetrix verify that SMDA03C-5E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMDA03C-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 SMDA03C-5E3/TR13 meets industry standards.
7.What is the process for return or replacement of SMDA03C-5E3/TR13?
All SMDA03C-5E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMDA03C-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 SMDA03C-5E3/TR13 part is unused and in its original packaging.
Return procedure for SMDA03C-5E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA03C-5E3/TR13 Tags
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Diodes Incorporated
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