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Microchip Technology SMDA03C-4E3/TR13
- Part No.:
- SMDA03C-4E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA03C-4E3/TR13.pdf
- Description:
- TVS DIODE 3.3VWM 9VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:8,114
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Product details
Overview
SMDA03C-4E3/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), 3.3 V standoff voltage (VWM), and clamping ≤7.0 V at 1 A. It protects four I/O lines against ESD per IEC 61000-4-2, EFT per IEC 61000-4-4, and lightning-induced surges in board-level interface circuits.
For engineers reviewing the SMDA03C-4E3/TR13 datasheet, SMDA03C-4E3/TR13 pinout, SMDA03C-4E3/TR13 application, or SMDA03C-4E3/TR13 equivalent, key selection criteria include VWM ≥ circuit operating voltage, low clamping voltage for TTL/CMOS I/O protection, SO-8 footprint compatibility, and IEC-compliant surge handling for industrial and telecom interfaces.
Technical Context
This TVS array uses silicon avalanche diode technology with integrated dual-diode back-to-back configuration per channel to enable bidirectional clamping. Each of the four protected lines exhibits symmetrical breakdown behavior with VBR min = 4.0 V and max = 7.0 V at 1 mA, and leakage current ≤200 µA at VWM.
Designed for board-level ESD hardening, it operates across –55 °C to +150 °C and maintains stable clamping performance under repetitive transients (<0.01% duty cycle). Capacitance is 300 pF per line at 0 V and 1 MHz, making it suitable for low-speed data lines such as RS-232, RS-485, and parallel I/O buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 300 W (8/20 µs waveform); sustains single high-energy surges without failure |
| Standoff Voltage VWM | 3.3 V; maximum continuous operating voltage before conduction begins |
| Breakdown Voltage VBR | 4.0–7.0 V @ 1 mA; defines onset of avalanche clamping for overvoltage events |
| Clamping Voltage VC | ≤7.0 V @ 1 A; limits voltage seen by downstream ICs during ESD strike |
| Leakage Current ID | ≤200 µA @ VWM; ensures minimal loading on 3.3 V logic lines at normal operation |
| Capacitance C | 300 pF @ 0 V, 1 MHz; compatible with <10 Mbps digital interfaces |
| Operating Temp Range | –55 °C to +150 °C; supports automotive under-hood and industrial control environments |
Pinout & Package
SO-8 surface-mount package with standard JEDEC MS-012AC outline; 0.150 inch body width, 1.27 mm lead pitch, and pin #1 identified by dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Line 1 | Connects to first protected I/O trace; forms one side of bidirectional clamp pair |
| 2 | Cathode of Line 1 | Connects to common reference (GND or VCC); completes Line 1 clamp path |
| 3 | Anode of Line 2 | Second protected signal line input; electrically isolated from Line 1 |
| 4 | Cathode of Line 2 | Shared cathode node with Pins 2, 6, and 8 for compact layout |
| 5 | Anode of Line 3 | Third independent bidirectional protection path |
| 6 | Cathode of Line 3 | Common cathode connection supporting multi-line integration |
| 7 | Anode of Line 4 | Fourth protected line; enables full quad-channel I/O hardening |
| 8 | Cathode of Line 4 | Final cathode terminal; all cathodes tied internally to common reference plane |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional 4-line protection | Single SO-8 device replaces four discrete TVS diodes, reducing BOM count and PCB area |
| IEC 61000-4-2 ESD compliance | Withstands ±15 kV air discharge and ±8 kV contact discharge without degradation |
| Low clamping voltage (≤7.0 V) | Ensures safe operation of 3.3 V CMOS/TTL I/O pins during transient events |
| High surge robustness | 300 W rating supports immunity to 8/20 µs lightning-induced surges per IEC 61000-4-5 |
| Wide temperature range | Enables use in extended-environment applications including industrial automation and base station equipment |
Applications
| Industrial Serial Interfaces | Embedded Controller I/O Protection |
|---|---|
Use Scenario: RS-485 transceivers in factory-floor PLC modules exposed to cable-coupled EFT and ground potential differences. IC Role / Device Role: Board-level transient suppressor placed directly at connector entry point before MAX485 or SN65HVD7x. Use Value: Limits induced surges to ≤7.0 V, preventing latch-up or permanent damage to 3.3 V transceiver inputs. | Use Scenario: GPIO and UART lines of ARM Cortex-M4 microcontrollers in medical diagnostic equipment. IC Role / Device Role: Primary ESD guard for unshielded front-panel buttons, LED drivers, and debug headers. Use Value: 300 pF capacitance avoids signal integrity issues on 2 Mbps UART links while passing IEC 61000-4-2 Level 4. |
| Telecom Line Card Protection | Automotive Body Control Module |
Use Scenario: Protection of Ethernet PHY management I/O (MDIO/MDC) and reset lines on carrier-grade switch line cards. IC Role / Device Role: Secondary surge defense layer behind primary gas discharge tube (GDT) on backplane connectors. Use Value: Fast response (<1 ns) clamps residual transients after GDT firing, preserving PHY functionality during lightning surges. | Use Scenario: LIN bus and sensor interface lines in BCM units subjected to ISO 10605 ESD pulses during assembly and service. IC Role / Device Role: Dedicated TVS array for clustered low-voltage analog/digital sensors (temperature, door position). Use Value: –55 °C to +150 °C rating ensures reliability in engine bay proximity mounting without derating. |
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-4/TR7 | Same electrical specs; supplied in 7-inch tape-and-reel (1,000 pcs) vs. 13-inch reel (2,500 pcs) | No functional difference; suited for lower-volume prototyping or small-batch production | Select when matching existing SMT line feeder capacity or minimizing initial inventory commitment |
| SP1003-030 | 3.3 V VWM, 300 W, but 200 pF capacitance and different SO-8 pinout (common-anode vs. common-cathode) | Lower capacitance benefits higher-speed lines; requires PCB layout revision due to reversed polarity assignment | Choose for USB 2.0 or CAN FD interfaces where <200 pF is critical, accepting redesign effort |
Compared with SMDA03C-4E3/TR13, the TR7 variant offers identical protection with smaller reel logistics, while SP1003-030 trades layout compatibility for reduced capacitance-making SMDA03C-4E3/TR13 optimal for drop-in replacement in legacy SO-8 I/O protection designs.
Availability
SMDA03C-4E3/TR13 is available at Aetrix Electronics and suitable for industrial serial interfaces, embedded controller I/O protection, and telecom line card surge hardening requiring stable component supply and long-term manufacturability.
Supply support for SMDA03C-4E3/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.
The SMDAxxC-4 TVS array product line was developed specifically for board-level ESD and surge protection of low-voltage digital interfaces in industrial, telecom, and automotive electronics.
FAQ
What is the standoff voltage rating of SMDA03C-4E3/TR13?
The SMDA03C-4E3/TR13 has a standoff voltage (VWM) of 3.3 V, meaning it remains non-conductive up to this DC or RMS voltage level. This matches standard 3.3 V logic systems and ensures no interference during normal operation while triggering reliably during overvoltage events. The SMDA03C-4E3/TR13 is designed to protect precisely those circuits.
Does SMDA03C-4E3/TR13 meet IEC 61000-4-2 ESD requirements?
Yes, the SMDA03C-4E3/TR13 is characterized to withstand ±15 kV air discharge and ±8 kV contact discharge per IEC 61000-4-2 Level 4. Its low clamping voltage (≤7.0 V at 1 A) and fast response time ensure protected ICs remain within safe operating limits. This performance is verified in the original MSC0886.PDF datasheet for SMDA03C-4E3/TR13.
What is the pin configuration of SMDA03C-4E3/TR13?
SMDA03C-4E3/TR13 uses an SO-8 package with pins 1–8 arranged as four independent bidirectional clamp pairs: (1,2), (3,4), (5,6), (7,8), where odd pins are anodes and even pins are cathodes tied to a common reference. Pin #1 is marked by a dot on the package top. This layout is confirmed in the "CIRCUIT DIAGRAM" and "MOUNTING PAD SO-8" diagrams of the SMDA03C-4E3/TR13 datasheet.
Can SMDA03C-4E3/TR13 be used for 5 V logic protection?
No - SMDA03C-4E3/TR13 is rated for 3.3 V standoff and is not recommended for 5 V systems. Its VWM of 3.3 V is too low for reliable 5 V operation and may cause leakage or premature conduction. For 5 V interfaces, use SMDA05C-4 instead. The SMDA03C-4E3/TR13 datasheet explicitly specifies 3.3 V as its maximum continuous operating voltage.
What is the thermal operating range of SMDA03C-4E3/TR13?
The SMDA03C-4E3/TR13 operates from –55 °C to +150 °C, validated per the manufacturer's maximum ratings table. This wide range supports deployment in harsh environments such as automotive engine compartments, industrial motor drives, and outdoor telecom enclosures. All electrical parameters in the SMDA03C-4E3/TR13 datasheet are specified at 25 °C but remain functional across this full range.
SMDA03C-4E3/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:
- 4
- 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-4E3/TR13 FAQ
1.How can I place an order for SMDA03C-4E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA03C-4E3/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-4E3/TR13 reliable?
The price and inventory of SMDA03C-4E3/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-4E3/TR13 is usually 5 days.
3.What payment methods are accepted for SMDA03C-4E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA03C-4E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA03C-4E3/TR13?
SMDA03C-4E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA03C-4E3/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-4E3/TR13?
For technical support, including SMDA03C-4E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA03C-4E3/TR13 requirements.
6.How does Aetrix verify that SMDA03C-4E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMDA03C-4E3/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-4E3/TR13 meets industry standards.
7.What is the process for return or replacement of SMDA03C-4E3/TR13?
All SMDA03C-4E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMDA03C-4E3/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-4E3/TR13 part is unused and in its original packaging.
Return procedure for SMDA03C-4E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA03C-4E3/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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onsemi
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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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