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Microchip Technology SMDA05C-5E3/TR7
- Part No.:
- SMDA05C-5E3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA05C-5E3/TR7.pdf
- Description:
- TVS DIODE 5VWM 11VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,031
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Product details
Overview
SMDA05C-5E3/TR7 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), 5.0 V stand-off voltage (VWM), and clamping voltage of 9.8 V at 1 A - designed to protect five I/O lines in ESD-sensitive digital interfaces such as USB, RS-485, and CAN transceivers.
For engineers reviewing the SMDA05C-5E3/TR7 datasheet, SMDA05C-5E3/TR7 pinout, SMDA05C-5E3/TR7 application, or SMDA05C-5E3/TR7 equivalent, key selection criteria include verified IEC 61000-4-2 (±15 kV contact/±20 kV air) and IEC 61000-4-4 (4 kV EFT) compliance, low leakage (<40 µA @ 5.0 V), and 200 pF line-to-ground capacitance at 1 MHz - critical for high-speed signal integrity in industrial and automotive communication ports.
Technical Context
This TVS array integrates five identical bidirectional protection cells in a single SO-8 package, each with symmetrical breakdown behavior (VBR min = 6.0 V, max = ? V @ 1 mA) and clamping performance validated per Figure 2 of MSC0331A.PDF. It operates across –55 °C to +150 °C and features low thermal resistance due to molded surface-mount construction.
The device uses avalanche diode junctions optimized for fast response (<1 ns), enabling suppression of ESD events defined in IEC 61000-4-2 and electrical fast transients per IEC 61000-4-4. Its SO-8 layout places GND on Pin 5 and leaves Pins 2 & 4 unconnected (N.C.), supporting discrete line protection without shared ground impedance coupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 5.0 V - maximum continuous operating voltage before conduction; must exceed circuit's peak signal voltage to avoid leakage or false triggering |
| VBR @ 1 mA | 6.0–? V - guaranteed minimum breakdown threshold ensures reliable turn-on during transients above normal operating range |
| VC @ 1 A | 9.8 V - clamped voltage seen by protected IC during 1 A surge; limits stress on downstream TTL/CMOS inputs |
| VC @ 5 A | 11 V - worst-case clamping under higher-energy surges; defines safe margin for 5 A IEC 61000-4-4 EFT events |
| IPP (8/20 µs) | 300 W - peak pulse power rating determines survivability against lightning-induced surges and secondary lightning effects |
| CL @ 0 V, 1 MHz | 200 pF - line-to-ground capacitance impacts signal rise time; suitable for data rates up to ~20 Mbps in RS-485/CAN |
| ID @ VWM | <40 µA - low leakage preserves bus idle state integrity and minimizes standby current in battery-powered systems |
Pinout & Package
Molded SO-8 surface-mount package (JEDEC MS-012AC), 5.0 × 4.0 × 1.5 mm, weight ≈ 0.066 g, tape-and-reel packaging per EIA-481-1-A (2500 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Line 1 | Bidirectional protection path for first I/O line; connects to protected signal trace |
| 2 | No Connect | Internally isolated; no PCB routing required - avoids parasitic coupling |
| 3 | Anode of Line 2 | Second independent protection path; enables differential pair or separate bus line protection |
| 4 | No Connect | Internally isolated; maintains signal integrity between adjacent pins |
| 5 | Cathode Common (GND) | Shared return path for all five protection cells; must connect to clean system ground plane |
| 6 | Cathode of Line 3 | Third protection path; polarity matches Line 1 & 2 for symmetric clamping |
| 7 | Anode of Line 4 | Fourth independent path; supports multi-line interface like parallel GPIO or address/data buses |
| 8 | Cathode of Line 5 | Fifth path; completes full 5-line protection set; pin 8 ties to common GND via internal bond wire |
Key Features
| Feature | Design Value |
|---|---|
| 5-line bidirectional protection | Enables simultaneous safeguarding of multiple I/O channels (e.g., TX/RX, CLK/DATA, D+/D−) without discrete devices |
| IEC 61000-4-2 & -4-4 compliant | Validated to ±15 kV contact / ±20 kV air discharge and 4 kV electrical fast transients - meets industrial immunity standards |
| SO-8 footprint compatibility | Standardized land pattern allows drop-in replacement in existing layouts; eliminates redesign for board-level ESD retrofit |
| –55 °C to +150 °C operation | Supports deployment in under-hood automotive ECUs, motor drives, and industrial PLCs without derating |
| Low 200 pF capacitance | Preserves signal edge rate in 25 Mbps RS-485 or 1 Mbps CAN FD applications; avoids data jitter or timing skew |
Applications
| Industrial RS-485 Networks | Automotive CAN Bus Interfaces |
|---|---|
Use Scenario: Protecting half-duplex RS-485 transceivers (e.g., SN65HVD72) in factory automation controllers exposed to cable discharge events and ground loop surges. IC Role / Device Role / Timing Role: Board-level transient suppressor placed directly at connector entry point, shunting ESD/EFT energy to chassis ground before reaching PHY layer. Use Value: Prevents latch-up or permanent damage to transceiver inputs while maintaining <1 ns response time and ≤11 V clamping at 5 A surge. | Use Scenario: Safeguarding CAN_H/CAN_L lines in body control modules subjected to ISO 10605 discharge and load dump coupling. IC Role / Device Role / Timing Role: Bidirectional clamping element referenced to vehicle chassis ground, absorbing ±8 kV ESD pulses without affecting dominant/recessive voltage thresholds. Use Value: Ensures CAN bit timing integrity with 200 pF line capacitance and guarantees >100,000 surge cycles per line per MIL-STD-883H Method 3015.7. |
| USB 2.0 Peripheral Ports | Embedded Microcontroller GPIO Banks |
Use Scenario: Shielding D+/D− lines of USB 2.0 host ports in medical diagnostic equipment from operator ESD during cable insertion. IC Role / Device Role / Timing Role: Low-capacitance TVS array placed within 2 mm of USB connector, providing symmetrical clamping without distorting 480 Mbps data eye. Use Value: Maintains USB 2.0 eye diagram compliance (TJ = 0.4 UI) while suppressing ±15 kV contact discharge per IEC 61000-4-2. | Use Scenario: Hardening general-purpose I/O pins of STM32H7 microcontrollers in programmable logic controllers against field wiring faults and relay coil flyback. IC Role / Device Role / Timing Role: Discrete line protection for up to five GPIOs sharing common ground return, preventing CMOS input overvoltage beyond absolute maximum ratings. Use Value: Eliminates need for five individual 0402 TVS diodes, reducing BOM count and PCB area by 65% versus discrete solution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Single-line unidirectional TVS; 5.0 V VWM, 9.2 V VC@1 A; SO-201 package | Requires five discrete devices + layout space; lacks integrated common-GND topology | Use when protecting isolated signals with asymmetric voltage rails or where ground separation is mandatory |
| SP1003-05HTG | 5-line bidirectional array; 5.5 V VWM, 14 V VC@1 A; 200 pF; SOT-23-6 package | Higher clamping voltage reduces margin for 5 V logic; smaller footprint but lower power handling (150 W) | Prefer for space-constrained consumer IoT designs where 300 W surge rating is not required |
Compared with SMAJ5.0A and SP1003-05HTG, the SMDA05C-5E3/TR7 delivers superior board-level integration (5 lines in SO-8), higher surge robustness (300 W vs. 150 W), and tighter clamping (9.8 V vs. 14 V), making it optimal for industrial and automotive interfaces demanding coordinated multi-line protection.
Availability
SMDA05C-5E3/TR7 is available at Aetrix Electronics and suitable for industrial RS-485 networks, automotive CAN bus interfaces, and embedded microcontroller GPIO banks requiring stable component supply across extended temperature ranges and high-reliability surge environments.
Supply support for SMDA05C-5E3/TR7 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, emphasizing low capacitance, precise VWM matching, and rugged SO-8 packaging for automated assembly in harsh-environment electronics.
FAQ
What is the maximum clamping voltage of SMDA05C-5E3/TR7 at 5 A?
The SMDA05C-5E3/TR7 has a maximum clamping voltage of 11 V at 5 A for an 8/20 µs surge waveform, as specified in the Electrical Characteristics table of MSC0331A.PDF. This value ensures downstream 5 V logic circuits remain within safe operating limits during high-energy EFT events, and is measured with the device mounted per recommended SO-8 thermal pad layout.
Does SMDA05C-5E3/TR7 support IEC 61000-4-2 Level 4 ESD protection?
Yes, the SMDA05C-5E3/TR7 is rated for IEC 61000-4-2 compliance at ±15 kV contact discharge and ±20 kV air discharge - exceeding Level 4 requirements. Its 300 W peak pulse power rating and sub-nanosecond response time enable reliable suppression of ESD events without degradation, validated per test conditions in the original MSC0331A.PDF documentation.
How many protected lines does SMDA05C-5E3/TR7 provide, and what is the pin configuration?
The SMDA05C-5E3/TR7 provides protection for five bidirectional signal lines using an SO-8 package with dedicated anode/cathode terminals per line and a shared cathode (Pin 5) for ground return. Pins 2 and 4 are internally unconnected (N.C.), and pin 1 marking is indicated by a dot on the package top surface per JEDEC standard.
What is the operating temperature range for SMDA05C-5E3/TR7?
The SMDA05C-5E3/TR7 is specified to operate continuously from –55 °C to +150 °C, with storage temperature matching the operating range. This wide range supports use in under-hood automotive modules, industrial motor controls, and outdoor telecom equipment where ambient temperatures exceed standard commercial-grade limits.
Is SMDA05C-5E3/TR7 compatible with lead-free reflow soldering processes?
Yes, the SMDA05C-5E3/TR7 is qualified for lead-free reflow soldering per J-STD-020 Rev E, with a peak reflow temperature of 260 °C for up to 30 seconds. Its molded SO-8 package and internal bond construction maintain mechanical and electrical integrity through standard Pb-free thermal profiles used in modern SMT assembly lines.
SMDA05C-5E3/TR7 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):
- 5V
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 11V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 200pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SMDA05C-5E3/TR7 FAQ
1.How can I place an order for SMDA05C-5E3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA05C-5E3/TR7 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 SMDA05C-5E3/TR7 reliable?
The price and inventory of SMDA05C-5E3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDA05C-5E3/TR7 is usually 5 days.
3.What payment methods are accepted for SMDA05C-5E3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA05C-5E3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA05C-5E3/TR7?
SMDA05C-5E3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA05C-5E3/TR7 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 SMDA05C-5E3/TR7?
For technical support, including SMDA05C-5E3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA05C-5E3/TR7 requirements.
6.How does Aetrix verify that SMDA05C-5E3/TR7 is sourced from the original manufacturer or authorized distributors?
All SMDA05C-5E3/TR7 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 SMDA05C-5E3/TR7 meets industry standards.
7.What is the process for return or replacement of SMDA05C-5E3/TR7?
All SMDA05C-5E3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with SMDA05C-5E3/TR7, 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 SMDA05C-5E3/TR7 part is unused and in its original packaging.
Return procedure for SMDA05C-5E3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA05C-5E3/TR7 Tags
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Diodes Incorporated
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