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Microchip Technology SM16LC05E3/TR13
- Part No.:
- SM16LC05E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SM16LC05E3/TR13.pdf
- Description:
- TVS DIODE 5VWM 11VC 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,144
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Product details
Overview
SM16LC05E3/TR13 from Microsemi is a 16-pin, 8-line unidirectional low-capacitance TVS diode array designed for board-level ESD/EFT protection of 5 V interfaces. It features 5.0 V standoff voltage (VWM), 6.0 V min breakdown (VBR), 9.8 V clamping at 1 A, 20 µA max reverse leakage, and 25 pF typical capacitance at 1 MHz - deployed in RS-232/RS-422 transceiver I/O protection.
For engineers reviewing the SM16LC05E3/TR13 datasheet, SM16LC05E3/TR13 pinout, SM16LC05E3/TR13 application, or SM16LC05E3/TR13 equivalent, key selection criteria include unidirectional clamping behavior, SO-16 package compatibility, 500 W peak pulse power (8/20 µs), IEC 61000-4-2 Level 4 compliance, and low-capacitance interface protection for 5 V logic systems.
Technical Context
This device implements eight independent unidirectional TVS diodes in a single SO-16 surface-mount package, with pins 1–8 serving as anodes and pins 9–16 as cathodes - enabling electrically isolated line-by-line protection without shared ground paths. Its clamping response is optimized for fast transients up to 500 W (8/20 µs), supporting robust immunity against ESD (±15 kV contact, ±20 kV air) and EFT (4 kV).
The SM16LC05E3/TR13 operates across –55°C to +150°C and maintains stable VBR with +1 mV/°C temperature coefficient. Its 25 pF capacitance and 9.8 V clamping at 1 A ensure minimal signal distortion on high-speed data lines such as RS-232 and RS-422 running up to 10 Mbps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 5.0 V - maximum continuous operating voltage before conduction; matches 5 V logic rail protection requirements |
| Breakdown Voltage (VBR) | 6.0 V min @ 1 mA - ensures reliable triggering above normal signal swing without false clamping |
| Clamping Voltage (VC) | 9.8 V @ 1 A - limits transient overvoltage to safe levels for 5 V ICs during ESD events |
| Peak Pulse Power | 500 W @ 8/20 µs - sustains high-energy surges per IEC 61000-4-4 EFT testing |
| Capacitance | 25 pF @ 1 MHz, 0 V - preserves signal integrity on 10 Mbps RS-232/RS-422 links |
| Operating Temperature | –55°C to +150°C - supports industrial and automotive under-hood applications |
| RoHS Compliance | e3 suffix indicates matte-tin plating per JEDEC J-STD-020, lead-free and halogen-free |
Pinout & Package
Molded SO-16 surface-mount package with 1.27 mm pitch, UL 94V-0 rated epoxy encapsulation, and pin #1 identified by dot marking. Anodes on pins 1–8; cathodes on pins 9–16.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–8 | Anode (input side) | Each connects to protected I/O line; biased negative relative to cathodes during normal operation |
| 9–16 | Cathode (common return) | Each ties to local ground or reference plane; enables independent line protection without shared impedance |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional 8-line protection | Enables discrete I/O line suppression without bidirectional leakage or signal inversion |
| Low 25 pF capacitance | Minimizes insertion loss and timing skew on 10 Mbps serial interfaces |
| 500 W peak pulse rating | Meets IEC 61000-4-4 Level 4 (4 kV) EFT immunity with margin |
| SO-16 surface-mount format | Supports automated assembly and PCB space efficiency vs. discrete diode arrays |
| –55°C to +150°C operation | Validated for extended-temperature industrial control and telecom infrastructure |
Applications
| RS-232 Transceiver Protection | Industrial Serial Port Interface |
|---|---|
Use Scenario: Protecting UART lines between microcontroller and MAX232-level transceivers in factory automation PLCs. IC Role / Device Role / Timing Role: Unidirectional TVS array clamping ESD spikes on TX/RX lines before they reach transceiver inputs. Use Value: Prevents latch-up or permanent damage to 5 V CMOS transceivers while maintaining <10 ns response time and <25 pF loading. | Use Scenario: Shielding RS-422 differential pairs in motor drive feedback modules exposed to cabinet-level ESD. IC Role / Device Role / Timing Role: Line-specific anode-to-cathode clamping per channel, preserving differential signal common-mode range. Use Value: Ensures 10 Mbps data integrity under repeated ±8 kV contact discharge without degrading eye diagram margins. |
| WAN Multiplexer I/O Protection | Multi-mode Optical Transceiver Control |
Use Scenario: Safeguarding management interface lines (TTL-level reset, clock, status) in carrier-grade T1/E1 multiplexers. IC Role / Device Role / Timing Role: Standoff-rated (5 V) suppression of induced transients from adjacent AC power traces or relay switching. Use Value: Eliminates firmware lockups caused by transient-induced MCU resets while sustaining >100,000 surge cycles. | Use Scenario: Protecting SFP module control pins (TX_DISABLE, LOS, MOD_ABS) in enterprise switches. IC Role / Device Role / Timing Role: Low-leakage (<20 µA) clamping that avoids DC bias shift on open-drain control signals. Use Value: Maintains valid logic thresholds across temperature and prevents false hot-plug detection during ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NUP4201MR6T1G | 4-line array, 5.0 V VWM, 12 pF capacitance, 350 W peak power | Limited to 4 channels; lower capacitance but reduced surge handling | Preferred where board space is constrained and 4-line protection suffices |
| Vishay SMAJ5.0A-E3/5AT | Single-channel, 5.0 V VWM, 15.4 V VC@1 A, 600 W peak power | Discrete solution requiring 8 devices; higher clamping voltage increases risk to 5 V ICs | Used when higher surge margin is prioritized over layout simplicity and capacitance |
Compared with NUP4201MR6T1G and SMAJ5.0A-E3/5AT, the SM16LC05E3/TR13 delivers integrated 8-line protection with balanced clamping (9.8 V), industry-standard SO-16 footprint, and verified 10 Mbps interface compatibility - making it optimal for compact, multi-channel serial port designs requiring production-ready ESD resilience.
Availability
SM16LC05E3/TR13 is available at Aetrix Electronics and suitable for RS-232 transceiver protection, industrial serial port interfaces, and WAN multiplexer I/O requiring stable component supply and long-term lifecycle support.
Supply support for SM16LC05E3/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 (now part of Microchip Technology) 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 SM16LCxx TVS Array series was engineered specifically for board-level unidirectional transient suppression in low-voltage digital interfaces - targeting RS-232/422/485, telecom control lines, and memory I/O protection where low capacitance and precise clamping are critical.
FAQ
What is the standoff voltage rating of SM16LC05E3/TR13?
The SM16LC05E3/TR13 has a standoff voltage (VWM) of 5.0 V, meaning it remains non-conductive up to this DC or continuous peak voltage. This rating aligns with standard 5 V logic systems and ensures no interference during normal operation while providing reliable clamping onset during transients. The SM16LC05E3/TR13 is specified to begin breakdown at minimum 6.0 V (VBR @ 1 mA), offering design margin above the 5 V rail.
How many protected lines does SM16LC05E3/TR13 support?
The SM16LC05E3/TR13 integrates eight independent unidirectional TVS diodes in a single SO-16 package, supporting protection for eight separate I/O lines. Pins 1–8 serve as individual anodes, and pins 9–16 as corresponding cathodes - enabling true line-isolated suppression without shared current paths. This architecture is confirmed in the official Microsemi schematic and mechanical drawings for SM16LC05E3/TR13.
Is SM16LC05E3/TR13 RoHS compliant?
Yes, the "e3" suffix in SM16LC05E3/TR13 denotes RoHS-compliant matte-tin plating per JEDEC J-STD-020, with lead-free and halogen-free construction. The device meets UL 94V-0 flammability rating and is qualified for reflow soldering per IPC/JEDEC J-STD-020. This compliance is explicitly documented in the Microsemi SM16LCxx datasheet revision Q (2008) for SM16LC05E3/TR13.
What is the clamping voltage of SM16LC05E3/TR13 at 5 A?
The SM16LC05E3/TR13 clamps to a maximum of 11 V at 5 A (8/20 µs pulse), as specified in the Electrical Characteristics table. This value ensures downstream 5 V components remain within absolute maximum ratings even during high-current ESD or EFT events. The 9.8 V clamping at 1 A and 11 V at 5 A reflect its controlled avalanche response, validated in Figure 2 of the official SM16LC05E3/TR13 datasheet.
Can SM16LC05E3/TR13 be used for bidirectional signal lines?
No, SM16LC05E3/TR13 is strictly unidirectional - configured with dedicated anodes (pins 1–8) and cathodes (pins 9–16). It is unsuitable for bidirectional buses like I²C or USB without external circuitry. Microsemi offers the SM16LCxxC series (e.g., SM16LC05C) for bidirectional applications; the "C" suffix explicitly denotes complementary symmetry, unlike the standard SM16LC05E3/TR13.
SM16LC05E3/TR13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 8
- 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:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 25pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
SM16LC05E3/TR13 FAQ
1.How can I place an order for SM16LC05E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM16LC05E3/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 SM16LC05E3/TR13 reliable?
The price and inventory of SM16LC05E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM16LC05E3/TR13 is usually 5 days.
3.What payment methods are accepted for SM16LC05E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM16LC05E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM16LC05E3/TR13?
SM16LC05E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM16LC05E3/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 SM16LC05E3/TR13?
For technical support, including SM16LC05E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM16LC05E3/TR13 requirements.
6.How does Aetrix verify that SM16LC05E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SM16LC05E3/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 SM16LC05E3/TR13 meets industry standards.
7.What is the process for return or replacement of SM16LC05E3/TR13?
All SM16LC05E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SM16LC05E3/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 SM16LC05E3/TR13 part is unused and in its original packaging.
Return procedure for SM16LC05E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM16LC05E3/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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