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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Microchip Technology SMDA24C-7/TR13

Name: SMDA24C-7/TR13
Brand: Microchip Technology
SKU: SMDA24C-7/TR13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SMDA24C-7/TR13

Manufacturer:: Microchip Technology

Category:: TVS Diodes

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: SMDA24C-7/TR13.pdf

Description:: TVS DIODE 24VWM 55VC 8-SO

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Product details

Overview

SMDA24C-7/TR13 from Diodes Incorporated is a 7-channel bidirectional transient voltage suppressor (TVS) array in SO-8 package, rated for 300 W peak pulse power (8/20 µs), 24 V standoff voltage (V_WM), and clamping voltage of 43 V at 1 A. It protects I/O transceivers, microprocessors, and memory interfaces against ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges.

For engineers reviewing the SMDA24C-7/TR13 datasheet, SMDA24C-7/TR13 pinout, SMDA24C-7/TR13 application, or SMDA24C-7/TR13 equivalent, key selection criteria include verified 24 V working voltage margin, sub-55 V clamping at 5 A, ≤1 µA leakage at V_WM, 35 pF line capacitance at 1 MHz, and SO-8 thermal/mechanical compatibility with board-level surge protection layouts.

Technical Context

This TVS array employs silicon avalanche diode technology arranged in a common-cathode configuration across seven bidirectional channels, enabling simultaneous protection of multiple data lines without polarity constraints. Each channel features matched breakdown (26.7 V min, 30 V max) and low dynamic impedance to ensure consistent clamping performance under fast-rising transients.

Designed for board-level integration, the device operates from –55 °C to +150 °C and maintains stable V_BR temperature coefficient (+28 mV/°C typical), supporting reliability in automotive and industrial environments where thermal cycling and voltage margin integrity are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
Standoff Voltage (V_WM)	24 V - Maximum continuous operating voltage per line before conduction begins; sets minimum circuit operating margin.
Breakdown Voltage (V_BR)	26.7 V min / 30 V max @ 1 mA - Confirmed avalanche initiation threshold; ensures reliable turn-on before downstream IC damage.
Clamping Voltage (V_C)	43 V @ 1 A, 55 V @ 5 A - Measured voltage across device during surge; defines maximum stress seen by protected ICs.
Peak Pulse Power	300 W @ 8/20 µs - Validated energy-handling capability for IEC 61000-4-2/4-4 compliance testing.
Line Capacitance	35 pF @ 1 MHz, 0 V - Low signal distortion risk on high-speed data lines such as USB 2.0 or RS-485.
Leakage Current (I_D)	≤1 µA @ 24 V - Negligible DC loading on I/O lines; preserves logic thresholds and power budget.
V_BR Tempco	+28 mV/°C - Predictable drift over temperature; enables accurate margining in wide-temperature designs.

Pinout & Package

SO-8 surface-mount package (JEDEC MS-012AC), molded plastic body, 0.150" width, 1.27 mm pitch, pin #1 identified by dot marking. Weight: 0.066 g.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode Line 1	Input terminal for first bidirectional channel; connects to protected data line.
2	Cathode Common	Shared cathode node for all 7 channels; ties to system ground or reference plane.
3	Anode Line 2	Input terminal for second bidirectional channel; independent surge path.
4	Anode Line 3	Input terminal for third bidirectional channel; supports multi-line interface protection.
5	Anode Line 4	Input terminal for fourth bidirectional channel; matches pinout symmetry of SO-8 layout.
6	Anode Line 5	Input terminal for fifth bidirectional channel; enables full 7-line coverage in compact footprint.
7	Anode Line 6	Input terminal for sixth bidirectional channel; validated per Figure 2 clamping curves.
8	Anode Line 7	Input terminal for seventh bidirectional channel; completes 7-line protection set.

Key Features

Feature	Design Value
7-channel bidirectional protection	Single SO-8 device replaces seven discrete TVS diodes; reduces PCB area and assembly cost.
IEC 61000-4-2/4-4 compliant	Validated to ±15 kV contact / ±20 kV air discharge ESD and 4 kV EFT; meets industrial immunity standards.
Low 35 pF line capacitance	Preserves signal integrity on 10–50 Mbps interfaces (e.g., CAN, RS-485, UART) without timing skew or reflection.
–55 °C to +150 °C operation	Supports under-hood automotive, motor control, and industrial PLC deployments without derating.
Common-cathode architecture	Enables uniform clamping across all lines with single ground connection; simplifies layout and grounding strategy.

Applications

Industrial HMI Panels	Automotive Body Control Modules
Use Scenario: Touchscreen controller and button interface lines exposed to operator ESD in factory environments. IC Role / Device Role / Timing Role: Board-level transient suppressor placed directly at connector entry point before MCU GPIOs. Use Value: Clamps 15 kV ESD events to ≤55 V within nanoseconds, preventing latch-up or gate oxide damage in 3.3 V/5 V microcontrollers.	Use Scenario: LIN bus and sensor signal lines routed through door modules subject to load dump and EFT coupling. IC Role / Device Role / Timing Role: Primary surge protection element on low-speed serial buses interfacing with 24 V supply domains. Use Value: Withstands 4 kV EFT bursts while maintaining <1 µA leakage at 24 V nominal, ensuring no false triggers or standby current penalty.
Medical Diagnostic Equipment	Networked Industrial Sensors
Use Scenario: RS-232/RS-485 ports connecting ultrasound or imaging subsystems to central processing units. IC Role / Device Role / Timing Role: Signal-line protector between isolated communication transceivers and host processor I/O. Use Value: 35 pF capacitance avoids signal degradation at 115.2 kbps baud rates; 300 W rating handles induced lightning surges per IEC 61000-4-5 Level 3.	Use Scenario: Analog sensor outputs (4–20 mA, 0–10 V) and digital status lines in distributed IO nodes. IC Role / Device Role / Timing Role: First-stage protection at field-wiring entry points before signal conditioning amplifiers. Use Value: 24 V V_WM aligns precisely with 24 V industrial power rails; 26.7 V V_BR provides 2.7 V design margin before clamping activation.

Industrial HMI Panels

Automotive Body Control Modules

Use Scenario: Touchscreen controller and button interface lines exposed to operator ESD in factory environments.

IC Role / Device Role / Timing Role: Board-level transient suppressor placed directly at connector entry point before MCU GPIOs.

Use Value: Clamps 15 kV ESD events to ≤55 V within nanoseconds, preventing latch-up or gate oxide damage in 3.3 V/5 V microcontrollers.

Use Scenario: LIN bus and sensor signal lines routed through door modules subject to load dump and EFT coupling.

IC Role / Device Role / Timing Role: Primary surge protection element on low-speed serial buses interfacing with 24 V supply domains.

Use Value: Withstands 4 kV EFT bursts while maintaining <1 µA leakage at 24 V nominal, ensuring no false triggers or standby current penalty.

Medical Diagnostic Equipment

Networked Industrial Sensors

Use Scenario: RS-232/RS-485 ports connecting ultrasound or imaging subsystems to central processing units.

IC Role / Device Role / Timing Role: Signal-line protector between isolated communication transceivers and host processor I/O.

Use Value: 35 pF capacitance avoids signal degradation at 115.2 kbps baud rates; 300 W rating handles induced lightning surges per IEC 61000-4-5 Level 3.

Use Scenario: Analog sensor outputs (4–20 mA, 0–10 V) and digital status lines in distributed IO nodes.

IC Role / Device Role / Timing Role: First-stage protection at field-wiring entry points before signal conditioning amplifiers.

Use Value: 24 V V_WM aligns precisely with 24 V industrial power rails; 26.7 V V_BR provides 2.7 V design margin before clamping activation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient voltage suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ24A	Single-line unidirectional TVS; 24 V V_WM, 38.9 V V_C @ 7.7 A; SO-201 package.	Requires 7 separate devices and routing; no common-cathode benefit; higher board area.	Select when discrete placement or unidirectional protection is required; not suitable for space-constrained multi-line I/O.
SP1003-02HTG	7-channel bidirectional TVS; 24 V V_WM, 40 V V_C @ 1 A; 30 pF capacitance; SOT-23-8 package.	Smaller footprint but lower 200 W peak power; limited to lower-energy transients.	Select for portable or ultra-compact designs where 200 W surge rating suffices and 5 pF lower capacitance is critical.

Compared with SMAJ24A and SP1003-02HTG, SMDA24C-7/TR13 delivers integrated 7-line protection in SO-8 with highest 300 W surge rating and optimal 24 V system alignment-making it preferred for industrial and automotive board-level ESD/EFT hardening where layout efficiency and robustness are jointly prioritized.

Availability

SMDA24C-7/TR13 is available at Aetrix Electronics and suitable for industrial HMIs, automotive body controllers, medical diagnostic ports, and networked sensor nodes requiring stable component supply and long-term production continuity.

Supply support for SMDA24C-7/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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability protection, power management, and signal integrity solutions.

The SMDAxxC-7 series was developed specifically for board-level transient suppression in multi-line digital interfaces, targeting ESD-prone I/O paths in automotive, industrial, and medical systems where compact, standardized SO-8 integration is essential.

FAQ

What is the standoff voltage rating of the SMDA24C-7/TR13?

The SMDA24C-7/TR13 has a standoff voltage (V_WM) of 24 V, meaning it remains non-conductive up to this DC or continuous peak voltage. This value is selected to match standard 24 V industrial and automotive supply rails while providing sufficient margin above normal operating conditions to avoid false triggering during transients.

How many protected lines does the SMDA24C-7/TR13 support?

The SMDA24C-7/TR13 supports exactly seven bidirectional data or interface lines, each connected to one anode pin (pins 1, 3–8), with a shared cathode (pin 2). This configuration allows simultaneous protection of parallel I/O buses, communication ports, or sensor arrays without requiring external biasing or polarity selection.

What is the clamping voltage of the SMDA24C-7/TR13 at 5 A surge current?

The clamping voltage of the SMDA24C-7/TR13 is 55 V at 5 A (8/20 µs waveform), as specified in the MSC0888.PDF datasheet. This value represents the maximum voltage imposed on protected circuitry during a defined 5 A transient event, ensuring downstream components like transceivers or microcontrollers remain within safe operating limits.

Is the SMDA24C-7/TR13 compliant with IEC 61000-4-2 ESD testing?

Yes, the SMDA24C-7/TR13 is designed and characterized to meet IEC 61000-4-2 requirements, including ±15 kV contact discharge and ±20 kV air discharge. Its 300 W peak pulse power rating and low clamping voltage enable reliable pass-level performance in system-level ESD immunity validation for industrial and automotive end equipment.

What package type is used for the SMDA24C-7/TR13?

The SMDA24C-7/TR13 uses an SO-8 surface-mount package (JEDEC MS-012AC), with 1.27 mm lead pitch, 0.150" body width, and pin #1 marked by a dot on the top surface. This standardized footprint enables drop-in compatibility with existing SO-8 land patterns and automated assembly processes.

SMDA24C-7/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:: -

Bidirectional Channels:: 7

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:: 300W

Power Line Protection:: No

Applications:: General Purpose

Capacitance @ Frequency:: 35pF @ 1MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

SMDA24C-7/TR13 FAQ

1.How can I place an order for SMDA24C-7/TR13 through Aetrix?

Please submit a Request for Quotation (RFQ) for SMDA24C-7/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 SMDA24C-7/TR13 reliable?

The price and inventory of SMDA24C-7/TR13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDA24C-7/TR13 is usually 5 days.

3.What payment methods are accepted for SMDA24C-7/TR13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA24C-7/TR13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SMDA24C-7/TR13?

SMDA24C-7/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SMDA24C-7/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 SMDA24C-7/TR13?

For technical support, including SMDA24C-7/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA24C-7/TR13 requirements.

6.How does Aetrix verify that SMDA24C-7/TR13 is sourced from the original manufacturer or authorized distributors?

All SMDA24C-7/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 SMDA24C-7/TR13 meets industry standards.

7.What is the process for return or replacement of SMDA24C-7/TR13?

All SMDA24C-7/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMDA24C-7/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 SMDA24C-7/TR13 part is unused and in its original packaging.

Return procedure for SMDA24C-7/TR13:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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