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Microchip Technology SM16LC15/TR13
- Part No.:
- SM16LC15/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SM16LC15/TR13.pdf
- Description:
- TVS DIODE 15VWM 30VC 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:679
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Product details
Overview
SM16LC15/TR13 from Microsemi is a 16-pin, 8-line unidirectional low-capacitance TVS diode array designed for board-level ESD/EFT protection of 15 V standoff interfaces. It delivers 500 W peak pulse power (8/20 µs), clamps to ≤30 V at 5 A, and exhibits ≤25 pF capacitance at 1 MHz-enabling protection of RS-422/RS-449 transceivers and 3.3–24 V logic interfaces without signal integrity degradation.
For engineers reviewing the SM16LC15/TR13 datasheet, SM16LC15/TR13 pinout, SM16LC15/TR13 application, or SM16LC15/TR13 equivalent, key selection criteria include standoff voltage (15 V), unidirectional configuration, SO-16 package compatibility, and verified IEC 61000-4-2 Level 4 (±15 kV contact) compliance for high-reliability industrial I/O protection.
Technical Context
The SM16LC15/TR13 implements eight independent unidirectional TVS diodes in a single SO-16 package, with pins 1–8 as anodes and pins 9–16 as cathodes-enabling electrically isolated line-by-line protection. Its low 25 pF capacitance and 15 V working voltage support high-speed data lines up to 10 Mbps without loading or timing distortion.
It operates across –55°C to +150°C and meets UL 94V-0 flammability rating. The device is rated for 500 W peak pulse power per line under 8/20 µs waveform, with <0.01% pulse repetition rate tolerance-suited for transient suppression in telecom multiplexers, router I/O, and multi-mode transceivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 15 V - Matches nominal 15 V supply rails; prevents leakage during normal operation |
| Breakdown Voltage (VBR) | 16.7 V min @ 1 mA - Ensures reliable triggering above operating voltage with margin |
| Clamping Voltage (VC) | 30 V max @ 5 A - Limits transient overvoltage to safe levels for 24 V-tolerant receivers |
| Capacitance (C) | 25 pF max @ 1 MHz, 0 V - Enables use on 10 Mbps RS-422/RS-449 links without signal rise-time degradation |
| Peak Pulse Power | 500 W @ 8/20 µs - Handles IEC 61000-4-2 ESD and IEC 61000-4-4 EFT surges per line |
| Operating Temperature | –55°C to +150°C - Supports deployment in extended-temperature industrial and telecom equipment |
| Package | SO-16 - Standard surface-mount footprint compatible with automated PCB assembly |
Pinout & Package
Molded SO-16 surface-mount package with tin-lead or RoHS-compliant matte-tin plating; pin #1 identified by dot marking; body marked with Microsemi logo and device code "MCD".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1–8 | Anode (input side) | Each connects to one protected I/O line; biased negative relative to cathodes during normal operation |
| Pins 9–16 | Cathode (common ground reference) | Collectively tied to system ground or local protection return; provides low-impedance path for transient current |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional 8-line protection | Enables independent, polarity-aware clamping for positive-going transients on each of 8 I/O lines |
| Low 25 pF capacitance | Preserves signal integrity on high-speed serial interfaces up to 10 Mbps without added jitter or attenuation |
| 500 W peak pulse rating | Meets IEC 61000-4-2 (±15 kV contact) and IEC 61000-4-4 (4 kV burst) immunity requirements per line |
| Electrically isolated channels | Prevents cross-talk or fault propagation between protected lines during surge events |
| SO-16 RoHS-compliant option | Available with "e3" suffix for lead-free assembly; compatible with standard reflow profiles |
Applications
| RS-422/RS-449 Transceiver Protection | WAN Multiplexer I/O Protection |
|---|---|
Use Scenario: Protecting differential data lines in industrial RS-422/RS-449 transceivers exposed to ESD during field maintenance or cable hot-plug. IC Role / Device Role / Timing Role: Unidirectional TVS array clamping positive transients on A/B lines while preserving common-mode noise rejection. Use Value: Maintains 10 Mbps data rate integrity with ≤30 V clamping, preventing latch-up or damage to MAX308x/MC3487 receivers. | Use Scenario: Safeguarding control and status I/O ports on carrier-grade WAN multiplexers subject to lightning-induced surges in central office environments. IC Role / Device Role / Timing Role: Board-level transient suppressor absorbing secondary lightning energy before it reaches FPGA or ASIC interface pins. Use Value: 500 W per-line rating ensures survivability against 4 kV EFT bursts per IEC 61000-4-4, extending field service life. |
| Router Serial Console Port | Multi-mode Optical Transceiver Module |
Use Scenario: Hardening RJ-45-based serial console (RS-232 level-shifted) on enterprise routers against user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance TVS array placed directly at connector, shunting ESD to chassis ground before signal conditioning ICs. Use Value: 25 pF capacitance avoids baud-rate limitation; 15 V VWM aligns with 3.3 V LDO-supplied UART voltage domain. | Use Scenario: Protecting LVDS clock and data lanes in SFP+ or XFP optical transceiver modules interfacing with host switch fabric. IC Role / Device Role / Timing Role: Unidirectional clamping element on AC-coupled differential pairs, referenced to module ground plane. Use Value: Independent 8-channel structure allows discrete protection of TX+/TX−/RX+/RX− plus two control lines without shared impedance coupling. |
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 NUP4105MR6T1G | 4-line, SOT-23-6; 12 V VWM, 22 pF, 200 W peak power | Lower channel count and power rating; suited for space-constrained 3.3 V MCU GPIO protection | Select when protecting ≤4 lines with tight board area budget and lower surge severity requirements |
| Vishay SMAJ15A | Single-channel SMA package; 15 V VWM, 35 pF, 400 W peak power | Discrete diode requiring 8 separate placements; higher capacitance limits speed | Choose only if SO-16 footprint is unavailable and manual layout of 8 individual devices is acceptable |
Compared with NUP4105MR6T1G and SMAJ15A, the SM16LC15/TR13 provides integrated 8-line protection in a single SO-16 footprint with superior 500 W rating and lower per-line capacitance-reducing BOM count, PCB area, and ground-path inductance versus discrete or 4-channel alternatives.
Availability
SM16LC15/TR13 is available at Aetrix Electronics and suitable for RS-422 transceivers, WAN multiplexer I/O, and multi-mode optical transceiver modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM16LC15/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 developed specifically for board-level ESD/EFT protection of high-speed, low-voltage digital interfaces-including telecom, networking, and industrial control I/O-where low capacitance and precise standoff voltage alignment are critical.
FAQ
What is the standoff voltage rating of the SM16LC15/TR13?
The SM16LC15/TR13 has a standoff voltage (VWM) of 15 V, meaning it remains non-conductive under continuous operating voltages up to 15 V. This rating ensures compatibility with 15 V nominal systems and provides sufficient margin above 12 V or 3.3 V logic rails when used with appropriate derating. The SM16LC15/TR13 is specified to begin breakdown at ≥16.7 V (VBR min @ 1 mA).
Is the SM16LC15/TR13 unidirectional or bidirectional?
The SM16LC15/TR13 is a unidirectional TVS array. Pins 1–8 serve as anodes and pins 9–16 as cathodes, allowing clamping only of positive transients relative to ground. It is not suitable for AC-coupled or bipolar signal lines; for bidirectional protection, Microsemi's SM16LC15C/TR13 (with "C" suffix) must be used instead.
What is the maximum clamping voltage of the SM16LC15/TR13 at 5 A?
The SM16LC15/TR13 clamps to a maximum of 30 V at 5 A (8/20 µs pulse), as specified in the Electrical Characteristics table. This value ensures downstream 24 V-tolerant receivers-such as RS-422 drivers or FPGA I/O banks-are held within safe voltage limits during surge events, preventing latch-up or permanent damage.
Does the SM16LC15/TR13 meet IEC 61000-4-2 ESD immunity standards?
Yes, the SM16LC15/TR13 is designed to meet IEC 61000-4-2 Level 4 (±15 kV contact discharge, ±20 kV air discharge) due to its 500 W peak pulse power rating and fast response time. Its performance is validated per the standard test waveform, making it suitable for board-level ESD protection in industrial and telecom equipment where compliance is required.
What package type and plating does the SM16LC15/TR13 use?
The SM16LC15/TR13 uses a molded SO-16 surface-mount package with pin #1 identified by a dot marking. It is available with either traditional tin-lead or RoHS-compliant matte-tin plating, both solderable per MIL-STD-750 Method 2026. The "TR13" suffix indicates tape-and-reel packaging with 2,500 units per 13-inch reel.
SM16LC15/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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 30V
- 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
SM16LC15/TR13 FAQ
1.How can I place an order for SM16LC15/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM16LC15/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 SM16LC15/TR13 reliable?
The price and inventory of SM16LC15/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM16LC15/TR13 is usually 5 days.
3.What payment methods are accepted for SM16LC15/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM16LC15/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM16LC15/TR13?
SM16LC15/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM16LC15/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 SM16LC15/TR13?
For technical support, including SM16LC15/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM16LC15/TR13 requirements.
6.How does Aetrix verify that SM16LC15/TR13 is sourced from the original manufacturer or authorized distributors?
All SM16LC15/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 SM16LC15/TR13 meets industry standards.
7.What is the process for return or replacement of SM16LC15/TR13?
All SM16LC15/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SM16LC15/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 SM16LC15/TR13 part is unused and in its original packaging.
Return procedure for SM16LC15/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM16LC15/TR13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
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