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Microchip Technology SMDA05-6E3/TR13
- Part No.:
- SMDA05-6E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA05-6E3/TR13.pdf
- Description:
- TVS DIODE 5VWM 11VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:7,735
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Product details
Overview
SMDA05-6E3/TR13 from Microsemi (now Microchip Technology) is a unidirectional 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 9.8 V clamping voltage at 1 A. It protects six I/O lines in board-level ESD/EFT-sensitive applications such as RS-232/485 transceivers and microprocessor I/O ports.
For engineers reviewing the SMDA05-6E3/TR13 datasheet, SMDA05-6E3/TR13 pinout, SMDA05-6E3/TR13 application, or SMDA05-6E3/TR13 equivalent, key selection criteria include VWM ≥ operating line voltage, clamping performance under 1–5 A surge current, SO-8 thermal and layout compatibility, and IEC 61000-4-2/4-4 compliance verification.
Technical Context
This TVS array employs silicon avalanche diode technology with six independent unidirectional channels, each connected between an I/O line and ground. Its low leakage (<20 µA @ 5.0 V) and 550 pF capacitance (1 MHz, 0 V) support high-speed data lines without signal integrity degradation.
The device operates across –55 °C to +150 °C and sustains repetitive 8/20 µs surges at <0.01% duty cycle. Clamping behavior is characterized per line, with guaranteed VC ≤ 9.8 V @ 1 A and ≤ 11 V @ 5 A - critical for safeguarding TTL, CMOS, and HCMOS logic interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 5.0 V - Maximum continuous working voltage; must match or exceed circuit's peak DC/AC operating voltage |
| VBR (Breakdown) | 6.0 V min @ 1 mA - Ensures reliable avalanche conduction onset above normal operating range |
| VC @ 1 A | 9.8 V max - Limits voltage seen by protected IC during 1 A transient, preserving logic-level integrity |
| VC @ 5 A | 11 V max - Confirms robust clamping under higher-energy EFT events (e.g., IEC 61000-4-4 Level 4) |
| Capacitance | 550 pF @ 1 MHz, 0 V - Compatible with ≤10 Mbps RS-485 or 25 Mbps USB 1.1 I/O without excessive rise-time degradation |
| Peak Pulse Power | 300 W @ 8/20 µs - Validates protection against IEC 61000-4-2 ±8 kV contact discharge and ±15 kV air discharge |
| Operating Temp | –55 °C to +150 °C - Supports automotive under-hood, industrial control, and extended-temperature embedded designs |
Pinout & Package
SO-8 surface-mount package with gull-wing leads; pin #1 identified by dot marking on top surface; 0.150–0.158 inch body width; 1.27 mm pitch; RoHS-compliant molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O Line 1 Anode | Unidirectional TVS cathode tied to GND; anode connects to protected signal line |
| 2 | I/O Line 2 Anode | Independent channel - no internal coupling; enables discrete line-by-line protection |
| 3 | I/O Line 3 Anode | Each anode routed separately; supports mixed-voltage I/O domains on same PCB |
| 4 | GND | Common cathode return path; requires low-inductance PCB ground plane connection |
| 5 | GND | Dual GND pins reduce ground loop impedance and improve high-frequency surge dissipation |
| 6 | I/O Line 4 Anode | Pin 6–8 mirror pins 1–3 symmetry; allows compact routing of 6-line interface bus |
| 7 | I/O Line 5 Anode | Enables full 6-line protection in single SO-8 footprint - saves board area vs. discrete diodes |
| 8 | I/O Line 6 Anode | Last channel; completes 6-channel array; pinout matches standard SO-8 mechanical outline |
Key Features
| Feature | Design Value |
|---|---|
| 6-channel unidirectional protection | Single SO-8 package replaces six discrete TVS diodes - reduces BOM count and layout complexity |
| IEC 61000-4-2 & -4-4 compliance | Validated for ±8 kV contact / ±15 kV air ESD and 4 kV EFT - meets industrial and telecom immunity requirements |
| Low clamping voltage (9.8 V @ 1 A) | Keeps protected ICs within safe absolute maximum ratings during fast transients - prevents latch-up or gate oxide damage |
| 550 pF line-to-ground capacitance | Permits use on 3.3 V/5 V digital buses up to 10 Mbps without signal distortion or timing skew |
| –55 °C to +150 °C operation | Supports deployment in engine control units, motor drives, and outdoor IoT gateways without derating |
Applications
| RS-485 Transceiver Protection | Industrial PLC I/O Module |
|---|---|
Use Scenario: Protecting half-duplex RS-485 differential pairs and control lines in factory automation networks exposed to cable-induced surges and ESD. IC Role / Device Role / Timing Role: Board-level transient clamp placed directly at connector entry point, shunting surge energy to chassis ground before reaching MAX485 or SN65HVD7x transceivers. Use Value: Prevents permanent failure of transceiver ICs during ±4 kV EFT bursts and maintains communication uptime in noisy environments. | Use Scenario: Safeguarding 24 VDC digital input channels in programmable logic controller backplanes subject to relay coil flyback and field wiring transients. IC Role / Device Role / Timing Role: Unidirectional TVS array clamps positive-going spikes on sink-input channels while maintaining <20 µA leakage at 24 V nominal. Use Value: Eliminates false triggering and extends mean time between failures (MTBF) of input conditioning circuitry in harsh industrial settings. |
| USB 1.1 Host Port Protection | Microcontroller GPIO Bank Protection |
Use Scenario: Shielding D+ and D– lines, VBUS sense, and ID pins of embedded USB host controllers in medical devices from user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS array placed within 2 cm of USB receptacle to minimize inductance and ensure sub-10 ns response. Use Value: Passes IEC 61000-4-2 Level 4 testing without data corruption or enumeration failure during clinical equipment qualification. | Use Scenario: Hardening 3.3 V GPIO banks of ARM Cortex-M4 microcontrollers used in smart sensor nodes against accidental probe contact and board handling discharge. IC Role / Device Role / Timing Role: Six-channel array assigned to six dedicated GPIOs - each channel independently clamps to GND without cross-talk. Use Value: Enables zero-failure field returns for battery-powered edge devices deployed in uncontrolled electrostatic environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Single-channel SMA package; 5.0 V VWM, 9.2 V VC @ 1 A; 600 pF capacitance | Requires six discrete placements; higher total board area and assembly cost | Preferred when space allows discrete layout or when mixed-voltage lines require different VWM values |
| SP1003-050 | 6-channel unidirectional SO-8; 5.5 V VWM, 12.5 V VC @ 1 A; 35 pF capacitance | Lower capacitance enables >100 Mbps interfaces but higher clamping may stress 3.3 V logic | Chosen for high-speed CAN or Ethernet PHY protection where low C is critical and VC margin permits |
Compared with SMAJ5.0A and SP1003-050, the SMDA05-6E3/TR13 delivers balanced clamping performance, proven 6-line integration, and industrial temperature support - making it optimal for cost-sensitive, space-constrained 5 V I/O protection where moderate bandwidth suffices.
Availability
SMDA05-6E3/TR13 is available at Aetrix Electronics and suitable for RS-485 transceivers, industrial PLC I/O modules, USB 1.1 host ports, and microcontroller GPIO bank protection requiring stable component supply across long-lifecycle embedded programs.
Supply support for SMDA05-6E3/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 (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 SMDAxx-6 TVS array series was designed specifically for board-level ESD/EFT protection of multi-line digital interfaces in harsh electromagnetic environments - emphasizing ruggedness, repeatable clamping, and SO-8 manufacturability.
FAQ
What is the maximum clamping voltage of SMDA05-6E3/TR13 at 5 A surge current?
The SMDA05-6E3/TR13 has a maximum clamping voltage of 11 V at 5 A (8/20 µs waveform), as specified in the MSC0332A.PDF datasheet. This value ensures downstream 5 V logic circuits remain within safe operating limits during high-energy electrical fast transients. The SMDA05-6E3/TR13 achieves this via optimized silicon junction design and low-inductance SO-8 packaging.
Is SMDA05-6E3/TR13 suitable for protecting 3.3 V logic interfaces?
Yes, the SMDA05-6E3/TR13 is suitable for 3.3 V logic when used with appropriate design margins: its 5.0 V stand-off voltage exceeds typical 3.3 V rail peaks, and its 9.8 V clamping voltage at 1 A remains below most 3.3 V ICs' absolute maximum ratings (often 6.5–7 V). For tighter margin applications, verify system-level surge testing. The SMDA05-6E3/TR13 remains widely deployed in mixed-voltage I/O protection.
Does SMDA05-6E3/TR13 meet IEC 61000-4-2 Level 4 ESD requirements?
Yes, the SMDA05-6E3/TR13 is rated for IEC 61000-4-2 ESD immunity up to ±15 kV air discharge and ±8 kV contact discharge - exceeding Level 4 (±8 kV contact / ±15 kV air). This capability is validated through standardized testing per the device's qualification report and is inherent to its 300 W peak pulse power rating and low-clamp architecture. The SMDA05-6E3/TR13 is routinely selected for medical and industrial end-equipment certification.
What is the leakage current specification for SMDA05-6E3/TR13 at its stand-off voltage?
The SMDA05-6E3/TR13 exhibits a maximum leakage current of 20 µA at its 5.0 V stand-off voltage (VWM) and 25 °C ambient, per the MSC0332A.PDF datasheet. This low leakage ensures minimal impact on high-impedance signal paths and battery-powered circuits. The SMDA05-6E3/TR13 maintains this spec across its full operating temperature range, supporting reliable operation in thermally variable environments.
How many independent protection channels does SMDA05-6E3/TR13 provide?
The SMDA05-6E3/TR13 provides six independent unidirectional TVS channels in a single SO-8 package, with pins 1–3 and 6–8 serving as anode terminals for individual I/O lines, and pins 4–5 as common cathode (GND) connections. This configuration enables discrete protection of six signals - such as RS-485 A/B, control lines, and status indicators - without inter-channel coupling. The SMDA05-6E3/TR13 is engineered for true per-line surge suppression.
SMDA05-6E3/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:
- 6
- Bidirectional Channels:
- -
- 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:
- 550pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SMDA05-6E3/TR13 FAQ
1.How can I place an order for SMDA05-6E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA05-6E3/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 SMDA05-6E3/TR13 reliable?
The price and inventory of SMDA05-6E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDA05-6E3/TR13 is usually 5 days.
3.What payment methods are accepted for SMDA05-6E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA05-6E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA05-6E3/TR13?
SMDA05-6E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA05-6E3/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 SMDA05-6E3/TR13?
For technical support, including SMDA05-6E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA05-6E3/TR13 requirements.
6.How does Aetrix verify that SMDA05-6E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMDA05-6E3/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 SMDA05-6E3/TR13 meets industry standards.
7.What is the process for return or replacement of SMDA05-6E3/TR13?
All SMDA05-6E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMDA05-6E3/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 SMDA05-6E3/TR13 part is unused and in its original packaging.
Return procedure for SMDA05-6E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA05-6E3/TR13 Tags
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ESD9B5.0ST5G
onsemi
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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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D12V0L1B2LP-7B
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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