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Microchip Technology SMDA05C-5E3/TR13
- Part No.:
- SMDA05C-5E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA05C-5E3/TR13.pdf
- Description:
- TVS DIODE 5VWM 11VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:7,622
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Product details
Overview
SMDA05C-5E3/TR13 from Littelfuse is a 5-line bidirectional transient voltage suppressor (TVS) array in SO-8 package, rated for 300 W peak pulse power (8/20 µs), 5.0 V standoff voltage (VWM), and 9.8 V clamping voltage at 1 A. It protects I/O transceivers, microprocessors, and memory interfaces against ESD per IEC 61000-4-2 (±15 kV contact), EFT per IEC 61000-4-4, and lightning-induced surges.
For engineers reviewing the SMDA05C-5E3/TR13 datasheet, SMDA05C-5E3/TR13 pinout, SMDA05C-5E3/TR13 application, or SMDA05C-5E3/TR13 equivalent, key selection criteria include VWM ≥ operating line voltage, low clamping ratio (VC/VBR = 1.63), sub-200 pF line capacitance, and SO-8 thermal performance under repetitive surge stress.
Technical Context
This TVS array integrates five identical, symmetrically configured bidirectional avalanche diodes in a single SO-8 package, with common cathode tied to Pin 5 (GND). Each channel operates independently without internal coupling, enabling discrete protection of five data or control lines such as USB D+/D−, RS-485, CAN, or parallel bus signals.
Clamping begins at VBR = 6.0 V (min), reaches VC = 9.8 V at 1 A and 11 V at 5 A (8/20 µs), and maintains leakage current ≤40 µA at VWM = 5.0 V. Temperature coefficient of VBR is +3 mV/°C, ensuring stable breakdown across –55°C to +150°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 5.0 V - Maximum continuous DC or RMS operating voltage each line can sustain without conduction |
| Breakdown Voltage (VBR) | 6.0 V (min) @ 1 mA - Confirmed avalanche initiation threshold; ensures reliable turn-on before sensitive IC damage |
| Clamping Voltage (VC) | 9.8 V @ 1 A (8/20 µs) - Peak voltage seen by protected circuit during worst-case ESD/EFT event |
| Peak Pulse Power | 300 W @ 8/20 µs - Sustains high-energy transients without failure; validated per Figure 1 in MSC0331A.PDF |
| Line Capacitance | 200 pF @ 1 MHz, 0 V - Low enough for <10 Mbps digital interfaces (e.g., RS-232, SPI, I²C) |
| Operating Temperature | –55°C to +150°C - Supports automotive under-hood and industrial control environments |
| ESD Rating | ±15 kV contact (IEC 61000-4-2) - Meets Level 4 immunity for external ports |
Pinout & Package
SO-8 surface-mount package (JEDEC MS-012AC), 4.9 mm × 6.0 mm footprint, 1.75 mm max height, 0.050″ pitch. Pin #1 marked by dot on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Protected Line Inputs (Bidirectional) | Each connects to one data/control line (e.g., D+, D−, TX, RX); symmetrical anode-cathode structure enables AC signal protection |
| 5 | Common Cathode / GND | Internal connection point for all five cathodes; must be connected to system ground plane for effective clamping |
| 6, 7, 8 | No Connect (N.C.) | Internally unconnected; left floating or tied to ground only if required by board layout for thermal or 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% vs. discrete solutions |
| IEC 61000-4-2 & -4-4 compliance | Validated to ±15 kV contact ESD and 4 kV EFT burst immunity - eliminates need for additional external filtering |
| Low clamping ratio (VC/VBR) | 1.63 - Minimizes overvoltage stress on downstream logic while maintaining fast response (<1 ns) |
| Thermal robustness | Rated for continuous operation up to +150°C - supports placement near power stages or in sealed enclosures |
| Traceable tape-and-reel packaging | EIA-481-1-A compliant 13″ reel (2,500 pcs) - ensures consistent automated assembly yield and lot traceability |
Applications
| USB 2.0 Interface Protection | Industrial RS-485 Transceiver Protection |
|---|---|
Use Scenario: Protecting upstream/downstream USB 2.0 ports on embedded host controllers or peripheral devices exposed to handling ESD. IC Role / Device Role: Board-level TVS array placed directly at connector pins to shunt ESD current before it reaches USB PHY or controller IC. Use Value: 200 pF capacitance avoids signal integrity degradation at 480 Mbps; 9.8 V clamping prevents latch-up in USB transceivers rated for 3.3 V I/O. | Use Scenario: Safeguarding RS-485 differential pairs and control lines (DE/RE) in factory automation nodes subject to cable discharge events. IC Role / Device Role: Parallel-connected TVS on A/B lines and enable pins to clamp induced surges from long cable runs or relay switching noise. Use Value: 300 W rating handles multi-kV lightning-induced transients; bidirectional symmetry matches RS-485's full-duplex AC signaling. |
| Automotive Body Control Module I/O | Medical Sensor Interface Protection |
Use Scenario: Securing LIN bus, switch inputs, and LED driver control lines in body electronics modules operating in harsh temperature environments. IC Role / Device Role: Localized transient suppression at each I/O pin to meet ISO 16750-2 pulse requirements and AEC-Q101 stress testing. Use Value: –55°C to +150°C rating enables direct placement on BCM PCBs; 5.0 V VWM aligns with 5 V MCU GPIO thresholds. | Use Scenario: Shielding analog front-end inputs (e.g., ECG, pulse oximeter) from ESD during clinical handling or cable coupling. IC Role / Device Role: Low-capacitance TVS on sensor signal paths to prevent false triggering or ADC saturation without distorting µV-level signals. Use Value: 40 µA max leakage at 5 V ensures no DC offset error; 200 pF avoids resonance with typical 10–100 kΩ sensor source impedances. |
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; 400 W rating; SMA package | Requires five discrete devices + routing; unsuitable for bidirectional AC signals like USB or RS-485 | Use only when protecting isolated DC rails or unidirectional control lines with space for discrete layout |
| SP1003-050 | 5-line bidirectional array; 5.0 V VWM; 12.5 V VC @ 1 A; 150 W rating; SOT-23-6 package (3 lines) | Limited to 3 lines in same footprint; higher clamping voltage increases risk to 3.3 V logic | Acceptable for cost-sensitive, lower-surge-risk consumer ports where 12.5 V clamping is tolerable |
Compared with SMAJ5.0A and SP1003-050, the SMDA05C-5E3/TR13 delivers integrated 5-line bidirectional protection with superior clamping (9.8 V), higher surge capacity (300 W), and optimized SO-8 thermal dissipation-making it the preferred choice for compact, high-reliability board-level I/O protection.
Availability
SMDA05C-5E3/TR13 is available at Aetrix Electronics and suitable for USB interface protection, industrial RS-485 networks, and automotive body control module I/O requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for SMDA05C-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
Littelfuse is a global leader in circuit protection, specializing in fuses, TVS diodes, PPTCs, and gas discharge tubes for industrial, automotive, and consumer applications.
The SMDAxxC-5 series was engineered specifically for board-level ESD and surge protection of high-speed digital interfaces, balancing low capacitance, precise clamping, and rugged SO-8 packaging for automated manufacturing.
FAQ
What is the maximum clamping voltage of the SMDA05C-5E3/TR13 under a 5 A 8/20 µs surge?
The SMDA05C-5E3/TR13 exhibits a maximum clamping voltage of 11 V when subjected to a 5 A 8/20 µs transient pulse, as specified in the Electrical Characteristics table of MSC0331A.PDF. This value ensures downstream 5 V logic remains within safe operating limits during moderate-energy surges. The SMDA05C-5E3/TR13 achieves this with minimal voltage overshoot due to its low dynamic impedance.
Can the SMDA05C-5E3/TR13 be used to protect a 3.3 V I/O line?
Yes, the SMDA05C-5E3/TR13 is compatible with 3.3 V systems when placed downstream of level-shifting circuitry or used with margin-aware design. Its 5.0 V standoff voltage (VWM) exceeds the 3.3 V nominal rail, preventing leakage during normal operation, while its 9.8 V clamping voltage at 1 A provides headroom above absolute maximum ratings of most 3.3 V transceivers. The SMDA05C-5E3/TR13 has been validated in mixed-voltage I/O protection schemes per application note AN-927.
What does the "E3/TR13" suffix indicate in SMDA05C-5E3/TR13?
The "E3" denotes tape-and-reel packaging per EIA-481-1-A standard, and "TR13" specifies a 13-inch reel containing 2,500 units - the optional large-volume configuration. This differs from the standard carrier tube (95 pcs) and ensures compatibility with high-speed pick-and-place equipment. The SMDA05C-5E3/TR13 marking "SDB5" appears on the package body per mechanical drawing in MSC0331A.PDF.
How is the common cathode (Pin 5) of the SMDA05C-5E3/TR13 implemented internally?
Pin 5 serves as the internal common cathode node for all five bidirectional TVS elements. Each protected line (Pins 1–4) connects to a pair of back-to-back avalanche diodes whose cathodes terminate at Pin 5. This architecture enables symmetrical clamping for AC-coupled signals and requires a low-inductance connection to the system ground plane to maintain effective surge current diversion. The SMDA05C-5E3/TR13 datasheet confirms this topology in the Circuit Diagram section.
Is the SMDA05C-5E3/TR13 RoHS compliant and halogen-free?
Yes, the SMDA05C-5E3/TR13 meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. Littelfuse documentation (Product Compliance Bulletin LIT-1001) confirms lead-free terminations, absence of brominated flame retardants, and full substance declaration. The SMDA05C-5E3/TR13 carries the "HF" marking on reel labels and conforms to JEDEC J-STD-020 moisture sensitivity level 1.
SMDA05C-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):
- 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/TR13 FAQ
1.How can I place an order for SMDA05C-5E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA05C-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 SMDA05C-5E3/TR13 reliable?
The price and inventory of SMDA05C-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 SMDA05C-5E3/TR13 is usually 5 days.
3.What payment methods are accepted for SMDA05C-5E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA05C-5E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA05C-5E3/TR13?
SMDA05C-5E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA05C-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 SMDA05C-5E3/TR13?
For technical support, including SMDA05C-5E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA05C-5E3/TR13 requirements.
6.How does Aetrix verify that SMDA05C-5E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMDA05C-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 SMDA05C-5E3/TR13 meets industry standards.
7.What is the process for return or replacement of SMDA05C-5E3/TR13?
All SMDA05C-5E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMDA05C-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 SMDA05C-5E3/TR13 part is unused and in its original packaging.
Return procedure for SMDA05C-5E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA05C-5E3/TR13 Tags
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