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Microchip Technology SMDA12-6E3/TR13
- Part No.:
- SMDA12-6E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA12-6E3/TR13.pdf
- Description:
- TVS DIODE 12VWM 24VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:7,894
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Product details
Overview
SMDA12-6E3/TR13 from Microsemi (now Microchip Technology) is a unidirectional transient voltage suppressor (TVS) array in SO-8 package, designed for board-level ESD and EFT protection of six I/O lines. It features 12 V stand-off voltage (VWM), 13.3 V minimum breakdown voltage (VBR), 19.0 V clamping voltage at 1 A, 300 W peak pulse power (8/20 µs), and 185 pF line capacitance - ideal for safeguarding CMOS, TTL, and I/O transceivers in industrial control interfaces.
For engineers reviewing the SMDA12-6E3/TR13 datasheet, SMDA12-6E3/TR13 pinout, SMDA12-6E3/TR13 application, or SMDA12-6E3/TR13 equivalent, key selection criteria include VWM ≥ circuit operating voltage, clamping performance under 1–5 A surge current, SO-8 footprint compatibility, IEC 61000-4-2/4-4 compliance, and low leakage (<1 µA at 12 V).
Technical Context
This TVS array uses silicon avalanche diode technology to provide fast-response (sub-nanosecond) clamping during ESD events. Each of its six channels operates independently with common cathode configuration tied to dual GND pins (pins 3 and 6), enabling simultaneous protection of bidirectional signal pairs without interference.
The device is rated for continuous operation from –55 °C to +150 °C and supports surge repetition rates below 0.01%, making it suitable for harsh-environment industrial and automotive body electronics where thermal stability and transient resilience are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM Stand-off Voltage | 12.0 V - maximum continuous DC or RMS operating voltage the protected line may sustain without triggering conduction |
| VBR Breakdown Voltage @1 mA | 13.3 V min - voltage at which avalanche conduction begins; ensures reliable turn-on above normal operating margin |
| VC Clamping Voltage @1 A | 19.0 V - maximum voltage seen by downstream circuitry during 8/20 µs surge at 1 A peak current |
| Peak Pulse Power | 300 W - energy-handling capability for standardized 8/20 µs transient waveform per IEC 61000-4-2/4-4 |
| Line Capacitance @1 MHz | 185 pF - low enough to avoid signal integrity degradation on moderate-speed digital I/O (e.g., RS-485, CAN, UART) |
| Leakage Current @VWM | <1 µA - negligible standby power loss and minimal impact on high-impedance sensor or reference circuits |
| Operating Temperature Range | –55 °C to +150 °C - validated for under-hood automotive and industrial motor drive environments |
Pinout & Package
SO-8 surface-mount package (JEDEC MS-012AC), molded plastic body with gull-wing leads; marking includes Microsemi logo, "SDC6", and date code; pin 1 identified by dot on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O Line 1 Anode | Input/output signal path protected by dedicated avalanche diode to common cathode (GND) |
| 2 | I/O Line 2 Anode | Independent protection channel; shares cathode return with pins 3 and 6 |
| 3 | GND (Cathode Common) | Primary ground return for channels 1–3; must be low-inductance connection to system ground plane |
| 4 | I/O Line 3 Anode | Third protected line; same clamping behavior as pins 1 and 2 |
| 5 | I/O Line 4 Anode | Fourth protected line; electrically isolated but thermally coupled within shared SO-8 die |
| 6 | GND (Cathode Common) | Secondary ground return for channels 4–6; improves current sharing and thermal distribution |
| 7 | I/O Line 5 Anode | Fifth protected line; matched VBR and VC tolerance across all six channels |
| 8 | I/O Line 6 Anode | Sixth protected line; full 300 W surge rating applies individually per channel |
Key Features
| Feature | Design Value |
|---|---|
| 6-channel unidirectional protection | Enables single-component safeguarding of multi-line interfaces (e.g., 6-pin GPIO header, parallel bus) without discrete diode arrays |
| IEC 61000-4-2 Level 4 compliant | Withstands ±15 kV contact / ±20 kV air discharge ESD without degradation - meets industrial immunity requirements |
| Low 185 pF line capacitance | Preserves signal rise/fall times on data lines up to ~10 Mbps (e.g., RS-232, SPI, I²C) without added termination |
| SO-8 footprint with dual GND pins | Reduces ground loop inductance and improves high-frequency surge current return path versus single-GND packages |
| –55 °C to +150 °C operation | Validated for use in engine control units, power inverters, and outdoor telecom equipment without derating |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Protection of 24 V digital input channels against load dump-induced transients and ESD during field wiring. IC Role / Device Role / Timing Role: Unidirectional TVS array clamping surge energy before it reaches microcontroller GPIO or optocoupler inputs. Use Value: Prevents latch-up and permanent damage to 3.3 V/5 V logic interfaces while maintaining <1 µA leakage at 24 V nominal bias. | Use Scenario: Safeguarding LIN bus transceiver pins and door module switch inputs from battery disconnect spikes and assembly-line ESD. IC Role / Device Role / Timing Role: Fast-response (sub-ns) voltage clamp limiting transient overvoltage to <24 V during 100 A/10 ms load dump events. Use Value: Enables robust operation in ASIL-B systems without requiring additional RC filtering or ferrite beads. |
| Medical Diagnostic Equipment Interfaces | Point-of-Sale Terminal Keypad Circuits |
Use Scenario: Shielding USB, RS-232, and analog sensor lines in portable ultrasound devices from hospital-grade ESD events. IC Role / Device Role / Timing Role: Six-channel TVS array placed at connector entry point to shunt ESD current directly to chassis ground. Use Value: Maintains signal fidelity (185 pF) and meets IEC 61000-4-2 Level 4 without compromising touch-screen responsiveness or ADC accuracy. | Use Scenario: Protecting membrane keypad scan lines and display interface traces in retail terminals exposed to frequent human contact. IC Role / Device Role / Timing Role: Low-capacitance clamping element absorbing ±8 kV contact ESD pulses before reaching ASIC keypad controller. Use Value: Eliminates false keypresses and firmware resets caused by ESD-induced logic glitches on 3.3 V I/O rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Single-line SMA package; 12 V VWM, 13.3 V VBR, 19.9 V VC@1 A; 300 W rating; no integrated multi-line layout | Requires six discrete placements and routing; higher PCB area and assembly cost | Preferred when board space allows discrete optimization or thermal isolation per line |
| SP1003-010 | Unidirectional 6-channel SO-8 TVS; 12 V VWM, 13.3 V VBR, 23 V VC@1 A; 150 W peak power; 30 pF capacitance | Lower clamping voltage not achieved; trade-off is ultra-low capacitance for high-speed data lines | Chosen for USB 2.0 or HDMI CEC lines where <50 pF is mandatory, accepting reduced surge margin |
Compared with SMAJ12A and SP1003-010, the SMDA12-6E3/TR13 delivers balanced performance: integrated 6-line SO-8 layout reduces layout complexity, 19.0 V clamping at 1 A provides tighter voltage limiting than SP1003-010, and its 185 pF capacitance supports broader interface compatibility than ultra-low-C alternatives.
Availability
SMDA12-6E3/TR13 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical device interfaces requiring stable component supply, long-term lifecycle support, and IEC-compliant transient protection.
Supply support for SMDA12-6E3/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 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 SMDAxx-6 TVS array series was developed to deliver compact, standardized board-level ESD/EFT protection for multi-line digital interfaces in mission-critical systems where failure modes must be eliminated at the PCB level.
FAQ
What is the clamping voltage of SMDA12-6E3/TR13 at 5 A surge current?
The SMDA12-6E3/TR13 has a maximum clamping voltage of 24 V at 5 A (8/20 µs waveform), as specified in the MSC0332A.PDF datasheet. This value ensures downstream circuitry remains within safe operating limits during higher-energy transients, such as electrical fast transients (EFT) in industrial environments. The 24 V clamping threshold is measured under standardized test conditions and applies uniformly across all six protected lines.
Is SMDA12-6E3/TR13 compatible with lead-free reflow soldering processes?
Yes, SMDA12-6E3/TR13 is qualified for lead-free reflow soldering per JEDEC J-STD-020. Its SO-8 package withstands peak temperatures up to 260 °C for 10 seconds. The device's –55 °C to +150 °C operating range and thermal stability ensure reliability after multiple reflow cycles. Always refer to the latest Microchip packaging specification for profile recommendations specific to SMDA12-6E3/TR13.
Does SMDA12-6E3/TR13 support bidirectional signal lines?
No, SMDA12-6E3/TR13 is a unidirectional TVS array intended only for lines referenced to ground with positive-going transients. It cannot protect AC-coupled or true bidirectional buses like USB D+/D– without external circuitry. For bidirectional protection, consider the complementary SMDA12-6U variant or discrete back-to-back diode configurations. Each channel in SMDA12-6E3/TR13 connects anode-to-I/O and cathode-to-GND.
What is the meaning of "TR13" in SMDA12-6E3/TR13?
The "TR13" suffix in SMDA12-6E3/TR13 indicates tape-and-reel packaging per EIA-481-1-A standard on a 13-inch reel containing 2,500 units. This differs from the standard carrier tube option (95 pcs). The "E3" denotes the Microsemi internal revision level and halogen-free material set. Both TR13 and tube versions share identical electrical and thermal specifications.
How does SMDA12-6E3/TR13 compare to SMDA12-6 in terms of specifications?
SMDA12-6E3/TR13 and SMDA12-6 share identical electrical parameters, thermal ratings, and SO-8 mechanical dimensions. The "E3/TR13" designation reflects packaging (tape-and-reel, 13″ reel, 2,500 pcs) and process revision - not functional differentiation. Both parts meet IEC 61000-4-2 Level 4 ESD immunity and deliver 19.0 V clamping at 1 A. No design changes are needed when substituting between them.
SMDA12-6E3/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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 24V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 185pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SMDA12-6E3/TR13 FAQ
1.How can I place an order for SMDA12-6E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA12-6E3/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 SMDA12-6E3/TR13 reliable?
The price and inventory of SMDA12-6E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDA12-6E3/TR13 is usually 5 days.
3.What payment methods are accepted for SMDA12-6E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA12-6E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA12-6E3/TR13?
SMDA12-6E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA12-6E3/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 SMDA12-6E3/TR13?
For technical support, including SMDA12-6E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA12-6E3/TR13 requirements.
6.How does Aetrix verify that SMDA12-6E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMDA12-6E3/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 SMDA12-6E3/TR13 meets industry standards.
7.What is the process for return or replacement of SMDA12-6E3/TR13?
All SMDA12-6E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMDA12-6E3/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 SMDA12-6E3/TR13 part is unused and in its original packaging.
Return procedure for SMDA12-6E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA12-6E3/TR13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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