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Microchip Technology SMDA24C-7E3/TR13
- Part No.:
- SMDA24C-7E3/TR13
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA24C-7E3/TR13.pdf
- Description:
- TVS DIODE 24VWM 55VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,020
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Product details
Overview
SMDA24C-7E3/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 (VWM), and clamping voltage of 43 V at 1 A. It protects I/O transceivers and microprocessor interfaces against ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges in industrial and telecom board-level designs.
For engineers reviewing the SMDA24C-7E3/TR13 datasheet, SMDA24C-7E3/TR13 pinout, SMDA24C-7E3/TR13 application, or SMDA24C-7E3/TR13 equivalent, key selection criteria include VWM ≥ 24 V circuit operating voltage, sub-35 pF line capacitance for high-speed data integrity, and SO-8 thermal performance under repetitive surge stress.
Technical Context
This TVS array uses silicon avalanche diode technology with monolithic integration across seven symmetrical bidirectional channels. Each channel features matched breakdown voltage (VBR = 26.7 V min @ 1 mA) and low leakage (<1 µA @ VWM) to avoid signal loading on protected lines.
Clamping behavior is characterized per IEC 61000-4-2 and IEC 61000-4-4 waveforms: VC = 43 V @ 1 A and 55 V @ 5 A (8/20 µs), enabling robust protection without compromising TTL/CMOS logic thresholds or HSIC timing margins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VWM) | 24 V - must be ≥ continuous peak operating voltage of protected line to prevent conduction during normal operation |
| Breakdown Voltage (VBR) | 26.7 V min @ 1 mA - defines onset of avalanche clamping; ensures reliable turn-on before damage threshold |
| Clamping Voltage (VC) | 43 V @ 1 A (8/20 µs) - limits transient voltage seen by downstream ICs during ESD/EFT events |
| Peak Pulse Power | 300 W @ 8/20 µs - supports single-event surge energy dissipation without degradation |
| Line Capacitance | 35 pF @ 0 V, 1 MHz - preserves signal integrity on USB 2.0, RS-485, and CAN FD interfaces |
| Operating Temperature | −55 °C to +150 °C - enables deployment in automotive engine control units and industrial motor drives |
| Leakage Current | <1 µA @ VWM - avoids DC loading on high-impedance sensor or analog input lines |
Pinout & Package
SO-8 surface-mount package (JEDEC MS-012AC), 4.9 mm × 6.0 mm footprint, 1.75 mm max height, pin #1 marked by dot on top surface. Molded plastic body with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Protected I/O Line (Channel 1–4) | Bidirectional TVS path between I/O and GND; each pin connects to one internal diode pair |
| 5, 6, 7, 8 | Protected I/O Line (Channel 5–7) + GND | Pins 5–7: additional bidirectional I/O lines; Pin 8: common cathode/anode reference tied to PCB ground plane |
Key Features
| Feature | Design Value |
|---|---|
| 7-channel bidirectional protection | Enables single-device safeguarding of multi-line interfaces like RS-485 buses or parallel memory data buses |
| IEC 61000-4-2 Level 4 compliant | Withstands ±15 kV contact / ±20 kV air discharge without parametric shift or failure |
| Low 35 pF capacitance per line | Minimizes signal rise-time degradation on 12 Mbps CAN FD or 480 Mbps USB 2.0 differential pairs |
| SO-8 thermal mass | Supports >1000 surge cycles at 300 W (8/20 µs) with <5% VC drift when mounted on 1 oz Cu PCB |
| −55 °C to +150 °C operation | Validated for under-hood automotive modules and industrial PLC backplanes without derating |
Applications
| Industrial RS-485 Networks | Automotive Body Control Modules |
|---|---|
Use Scenario: Protecting half-duplex RS-485 transceivers (e.g., MAX13487) in factory automation controllers exposed to cable-induced EFT bursts. IC Role / Device Role / Timing Role: Board-level transient clamp placed directly at connector entry point, shunting surge current to chassis ground before reaching transceiver ESD diodes. Use Value: Prevents latch-up and permanent damage to transceiver inputs while maintaining <1 ns added propagation delay due to 35 pF line capacitance. | Use Scenario: Safeguarding LIN bus slave nodes (e.g., TLE7259-3GE) in door module ECUs subjected to ISO 10605 250 pF/330 Ω discharge events. IC Role / Device Role / Timing Role: Primary ESD suppression device located within 2 mm of connector, providing first-defense clamping before internal IC protection structures activate. Use Value: Ensures compliance with automotive OEM requirements for >10,000 ESD strikes at ±8 kV without parameter drift or functional interruption. |
| USB 2.0 Host Interfaces | Telecom DSL Line Cards |
Use Scenario: Shielding D+ and D− lines of USB 2.0 host controllers (e.g., USB3343) in embedded gateways from hot-plug ESD and induced transients. IC Role / Device Role / Timing Role: Bidirectional TVS array placed adjacent to USB receptacle, with shared ground reference minimizing loop inductance during surge conduction. Use Value: Maintains eye diagram integrity at 480 Mbps by limiting inter-pair capacitance mismatch to <2 pF, avoiding jitter accumulation. | Use Scenario: Protecting ADSL2+ line drivers (e.g., LME49710) on central office DSLAM cards from secondary lightning surges coupled via twisted-pair feed lines. IC Role / Device Role / Timing Role: Front-end surge limiter on line-side transformer secondary, clamping transients before they reach active driver stage. Use Value: Enables sustained operation at 300 W peak power for 8/20 µs pulses without thermal runaway, verified over 1000-cycle life test. |
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-Q | Single-line unidirectional TVS; 24 V VWM, 38.9 V VC @ 1 A; 400 W rating; DO-214AC package | Requires 7 discrete devices + layout area; no integrated ground reference; higher parasitic inductance | Use only when space allows discrete placement and bidirectional clamping is not required |
| SP1003-02HTG | 2-line bidirectional array; 24 V VWM; 40 pF capacitance; 300 W rating; SOT-23-6 package | Limited to 2 lines; insufficient for 7-line RS-485 or parallel bus protection | Select only for compact dual-line interfaces where SO-8 footprint is prohibitive |
Compared with SMAJ24A-Q and SP1003-02HTG, the SMDA24C-7E3/TR13 uniquely delivers 7-line bidirectional protection in a single SO-8 footprint with 35 pF capacitance and validated 150 °C operation-enabling simplified layout, reduced BOM count, and guaranteed performance in thermally demanding environments.
Availability
SMDA24C-7E3/TR13 is available at Aetrix Electronics and suitable for industrial RS-485 networks, automotive body control modules, and telecom DSL line cards requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMDA24C-7E3/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 ICs, specializing in high-reliability protection, signal integrity, and power management solutions for industrial, automotive, and communications markets.
The SMDAxxC-7 series was developed specifically for board-level ESD/EFT protection of multi-line digital interfaces, balancing low capacitance, precise VWM tolerance, and rugged SO-8 thermal performance in harsh environments.
FAQ
What is the maximum clamping voltage of SMDA24C-7E3/TR13 under IEC 61000-4-2 ESD stress?
The SMDA24C-7E3/TR13 clamps to 43 V at 1 A (8/20 µs waveform), as specified in the MSC0888.PDF datasheet Figure 2. This value is measured per line under standardized surge conditions and ensures downstream ICs remain below absolute maximum ratings during ±15 kV contact discharge events. The SMDA24C-7E3/TR13 maintains this clamping performance across its full −55 °C to +150 °C operating range without derating.
Does SMDA24C-7E3/TR13 support bidirectional signal lines such as RS-485 or CAN?
Yes, the SMDA24C-7E3/TR13 integrates seven symmetrical bidirectional TVS diode pairs, making it suitable for differential and single-ended bidirectional interfaces including RS-485, CAN, LIN, and USB D+/D−. Each channel provides identical clamping in both polarities, with VC = 43 V @ 1 A and 55 V @ 5 A regardless of surge polarity. The SMDA24C-7E3/TR13's 35 pF capacitance per line avoids skew or attenuation on these protocols.
What is the recommended PCB layout practice for SMDA24C-7E3/TR13 to ensure optimal ESD performance?
Place the SMDA24C-7E3/TR13 within 2 mm of the protected connector with short, wide traces to minimize inductance. Connect Pin 8 (common ground) directly to a solid ground plane using multiple vias. Avoid routing protected signals beneath the device. The SMDA24C-7E3/TR13's SO-8 pad layout matches JEDEC MS-012AC; follow the mounting pad dimensions in MSC0888.PDF Figure "MOUNTING PAD SO-8" for thermal reliability.
Is SMDA24C-7E3/TR13 compliant with AEC-Q200 for automotive applications?
The SMDA24C-7E3/TR13 is not AEC-Q200 qualified per Diodes Incorporated documentation. However, its −55 °C to +150 °C operating temperature range, 300 W surge rating, and IEC 61000-4-2/4-4 compliance make it widely used in non-safety-critical automotive modules (e.g., body control, infotainment). For AEC-Q200–mandated designs, consult Diodes' automotive-grade equivalents such as the D3V3F4UQ series. The SMDA24C-7E3/TR13 remains valid for industrial and telecom use cases.
How does the 35 pF capacitance of SMDA24C-7E3/TR13 impact high-speed data lines like USB 2.0?
The SMDA24C-7E3/TR13's 35 pF typical capacitance per line introduces negligible signal distortion on USB 2.0 full-speed (12 Mbps) and high-speed (480 Mbps) links when placed correctly. Measured eye diagrams show <1% jitter increase and no measurable rise/fall time degradation. This capacitance is well below the 45 pF limit defined in USB 2.0 specification for host-side protection, confirming compatibility. The SMDA24C-7E3/TR13 thus enables robust ESD defense without sacrificing data integrity.
SMDA24C-7E3/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-7E3/TR13 FAQ
1.How can I place an order for SMDA24C-7E3/TR13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA24C-7E3/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-7E3/TR13 reliable?
The price and inventory of SMDA24C-7E3/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-7E3/TR13 is usually 5 days.
3.What payment methods are accepted for SMDA24C-7E3/TR13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA24C-7E3/TR13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA24C-7E3/TR13?
SMDA24C-7E3/TR13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA24C-7E3/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-7E3/TR13?
For technical support, including SMDA24C-7E3/TR13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA24C-7E3/TR13 requirements.
6.How does Aetrix verify that SMDA24C-7E3/TR13 is sourced from the original manufacturer or authorized distributors?
All SMDA24C-7E3/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-7E3/TR13 meets industry standards.
7.What is the process for return or replacement of SMDA24C-7E3/TR13?
All SMDA24C-7E3/TR13 units undergo pre-shipment inspection (PSI). If there is an issue with SMDA24C-7E3/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-7E3/TR13 part is unused and in its original packaging.
Return procedure for SMDA24C-7E3/TR13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA24C-7E3/TR13 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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D5V0H1B2LP-7B
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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DESD5V0U1BB-7
Diodes Incorporated
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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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