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Microchip Technology SM16LC24E3/TR13
- Part No.:
- SM16LC24E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SM16LC24E3/TR13.pdf
- Description:
- TVS DIODE 24VWM 55VC 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:6,320
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Product details
Overview
SM16LC24E3/TR13 from Microsemi is a 16-pin, 8-line unidirectional low-capacitance TVS diode array designed for board-level ESD/EFT protection of 24 V interfaces. It delivers 500 W peak pulse power (8/20 µs), clamps to 43 V at 1 A and 55 V at 5 A, and features 25 pF capacitance per line at 1 MHz - used in RS-422/RS-449 transceivers and WAN multiplexers.
For engineers reviewing the SM16LC24E3/TR13 datasheet, SM16LC24E3/TR13 pinout, SM16LC24E3/TR13 application, or SM16LC24E3/TR13 equivalent, key selection criteria include standoff voltage (24 V), unidirectional configuration, SO-16 package compatibility, and IEC 61000-4-2 Level 4 (±15 kV contact) compliance for industrial I/O protection.
Technical Context
This device 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 protection of eight signal lines without shared ground coupling. Its 24 V standoff voltage (VWM) and 26.7 V minimum breakdown (VBR) ensure compatibility with 24 V logic and interface circuits.
The SM16LC24E3/TR13 operates across –55°C to +150°C and meets UL 94V-0 flammability rating. Its 25 pF typical capacitance per channel supports data rates up to 10 Mbps in RS-422/RS-449 applications while maintaining signal integrity under transient stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 24 V - matches continuous operating voltage of 24 V industrial I/O circuits without leakage |
| Breakdown Voltage (VBR) | 26.7 V min @ 1 mA - ensures reliable conduction onset above normal operating rail |
| Clamping Voltage (VC) | 43 V @ 1 A - limits transient voltage to safe level for 24 V-rated receivers |
| Peak Pulse Power | 500 W @ 8/20 µs - handles IEC 61000-4-4 EFT bursts and lightning-induced surges |
| Capacitance per Line | 25 pF @ 1 MHz, 0 V - enables ≤10 Mbps data rates in RS-422/RS-449 links |
| Operating Temperature | –55°C to +150°C - supports deployment in extended-temperature industrial and telecom environments |
| ESD Rating | IEC 61000-4-2 ±15 kV contact - protects against human-body-model discharges at board edge connectors |
Pinout & Package
Molded SO-16 surface-mount package with matte-tin RoHS-compliant plating; pin #1 identified by dot marking; body weight ≈0.128 g; UL 94V-0 rated encapsulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1–8 | Anode terminals (input side) | Each connects to one protected signal line; biased negative relative to cathodes during normal operation |
| Pins 9–16 | Cathode terminals (common return) | Collectively tied to system ground or local reference; provides low-impedance surge path to earth |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional 8-line protection | Enables independent suppression on eight I/O lines without cross-talk or ground bounce coupling |
| 24 V standoff voltage | Aligns precisely with 24 V industrial control and sensor interface rails, minimizing false triggering |
| 25 pF channel capacitance | Preserves signal rise/fall times in high-speed serial links up to 10 Mbps (e.g., RS-422) |
| SO-16 RoHS-compliant package | Supports automated SMT assembly and meets environmental compliance requirements for global deployments |
| –55°C to +150°C operation | Validated for use in harsh environments including outdoor telecom cabinets and factory-floor controllers |
Applications
| Industrial Serial Interfaces | WAN Multiplexer Protection |
|---|---|
Use Scenario: RS-422 differential data links in programmable logic controllers (PLCs) exposed to ESD during field wiring. IC Role / Device Role / Timing Role: Unidirectional TVS array clamping transient energy on A/B bus lines before reaching transceiver IC inputs. Use Value: Prevents latch-up or permanent damage to MAX3082-level transceivers while maintaining <10 ns response time and 25 pF loading. | Use Scenario: T1/E1 line interface cards in carrier-grade multiplexers subject to secondary lightning surges. IC Role / Device Role / Timing Role: Board-level surge suppressor on receive-side transformer-coupled lines, referenced to chassis ground. Use Value: Limits induced transients to ≤55 V at 5 A, protecting downstream line drivers and clock recovery circuits. |
| Multi-mode Transceiver I/O | 24 V Sensor Interface Protection |
Use Scenario: Shared PCB footprint supporting RS-232/RS-422/RS-449 mode selection in modular test equipment. IC Role / Device Role / Timing Role: Common TVS array guarding all three interface variants' signal pairs with unified clamping behavior. Use Value: Eliminates need for separate protection schemes per interface, reducing BOM count and layout complexity. | Use Scenario: Analog input modules accepting 24 V two-wire current-loop sensors in process automation systems. IC Role / Device Role / Timing Role: Standoff-rated TVS on sensor return path to suppress EFT bursts coupled via long field wiring. Use Value: Maintains 24 V DC operating margin while clamping fast transients to safe levels for ADC front-end op-amps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Single-channel SMA package; 24 V VWM, 38.9 V VC@1 A; 500 W rating | Requires eight discrete devices and additional PCB area; no integrated multi-line isolation | Use when space allows discrete placement and ground separation is not critical |
| SP1003-02HTG | 8-channel unidirectional array in SO-16; 24 V VWM, 40 V VC@1 A; 350 W rating | Lower peak power handling; optimized for lower-energy ESD-only environments | Prefer for cost-sensitive consumer I/O where IEC 61000-4-4 EFT immunity is not required |
Compared with SMAJ24A and SP1003-02HTG, the SM16LC24E3/TR13 uniquely combines 8-line integration, 500 W surge capability, and 25 pF capacitance in SO-16 - making it optimal for space-constrained industrial serial interfaces requiring full IEC 61000-4-2/4-4 compliance.
Availability
SM16LC24E3/TR13 is available at Aetrix Electronics and suitable for industrial serial interfaces, WAN multiplexers, multi-mode transceivers, and 24 V sensor interface designs requiring stable component supply and long-term obsolescence management.
Supply support for SM16LC24E3/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 unidirectional transient suppression in high-speed, low-voltage communication interfaces - balancing clamping performance, capacitance, and thermal robustness for industrial I/O protection.
FAQ
What is the standoff voltage rating of SM16LC24E3/TR13 and how does it relate to circuit protection?
The SM16LC24E3/TR13 has a 24 V standoff voltage (VWM), meaning it remains non-conductive below this DC or continuous peak voltage. This rating aligns directly with 24 V industrial control and sensor interface rails, ensuring no leakage current during normal operation while triggering reliably during transients exceeding 26.7 V (VBR). The SM16LC24E3/TR13 thus prevents false triggering while safeguarding downstream ICs.
How is the pin configuration of SM16LC24E3/TR13 structured for unidirectional protection?
The SM16LC24E3/TR13 uses pins 1–8 as anodes and pins 9–16 as cathodes - forming eight independent unidirectional TVS paths. Each anode connects to a protected signal line, while cathodes tie to a common ground reference. This architecture ensures electrical isolation between channels and avoids ground loop coupling, a critical advantage over bidirectional arrays in noise-sensitive applications.
Does SM16LC24E3/TR13 meet international ESD and surge immunity standards?
Yes, the SM16LC24E3/TR13 is rated for IEC 61000-4-2 Level 4 (±15 kV contact, ±25 kV air) ESD immunity and IEC 61000-4-4 electrical fast transient (EFT) bursts. Its 500 W peak pulse power (8/20 µs) also supports secondary lightning surge protection per IEC 61000-4-5. These validated ratings make the SM16LC24E3/TR13 suitable for EN 55032/55035-compliant industrial equipment.
What is the typical capacitance of SM16LC24E3/TR13 and why does it matter for data interfaces?
The SM16LC24E3/TR13 exhibits 25 pF typical capacitance per channel at 1 MHz and 0 V bias. This low value minimizes signal distortion and preserves rise/fall times in high-speed serial links - enabling reliable operation in RS-422 and RS-449 interfaces running up to 10 Mbps. Higher capacitance would degrade timing margins and increase bit error rates, especially over longer traces.
Is SM16LC24E3/TR13 compatible with lead-free reflow soldering processes?
Yes, the SM16LC24E3/TR13 is RoHS-compliant with matte-tin plating and qualified for standard lead-free reflow profiles per J-STD-020. Its SO-16 package withstands peak temperatures up to 260°C for 30 seconds, and the device meets MIL-STD-750 Method 2026 for solderability. The "e3" suffix explicitly denotes RoHS compliance and lead-free finish.
SM16LC24E3/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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 55V
- 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
SM16LC24E3/TR13 FAQ
1.How can I place an order for SM16LC24E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM16LC24E3/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 SM16LC24E3/TR13 reliable?
The price and inventory of SM16LC24E3/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM16LC24E3/TR13 is usually 5 days.
3.What payment methods are accepted for SM16LC24E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM16LC24E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM16LC24E3/TR13?
SM16LC24E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM16LC24E3/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 SM16LC24E3/TR13?
For technical support, including SM16LC24E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM16LC24E3/TR13 requirements.
6.How does Aetrix verify that SM16LC24E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SM16LC24E3/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 SM16LC24E3/TR13 meets industry standards.
7.What is the process for return or replacement of SM16LC24E3/TR13?
All SM16LC24E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SM16LC24E3/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 SM16LC24E3/TR13 part is unused and in its original packaging.
Return procedure for SM16LC24E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM16LC24E3/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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ESD5Z5.0T1G
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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