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Diodes Incorporated SDMP0340LCT-7
- Part No.:
- SDMP0340LCT-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- -
- Datasheet:
-
SDMP0340LCT-7.pdf
- Description:
- DIODE ARRAY SCHOTTKY 40V SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:6
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Product details
Overview
SDMP0340LCT-7 from Diodes Incorporated is a surface-mount Schottky barrier diode in SOT-523 package, rated for 40 V peak repetitive reverse voltage, 30 mA forward current, and 290–370 mV forward voltage at 1 mA-ideal for low-voltage logic clamping and signal rectification in portable USB interface circuits.
For engineers reviewing the SDMP0340LCT-7 datasheet, SDMP0340LCT-7 pinout, SDMP0340LCT-7 application, or SDMP0340LCT-7 equivalent, key selection criteria include its low VF (290–370 mV), 2 pF capacitance at 1 V, guard ring construction for ESD robustness, RoHS-compliant matte tin plating, and thermal resistance of 833 °C/W on FR-4 board.
Technical Context
This Schottky diode employs guard ring die construction to suppress transient-induced junction breakdown and improve surge immunity. Its low 2 pF junction capacitance and sub-370 mV forward drop enable high-speed switching in 1.8 V/3.3 V logic-level signal paths without significant voltage loss or timing skew.
The device operates across –40 °C to +125 °C and dissipates up to 150 mW on standard FR-4 layout. Its 200 mA non-repetitive surge rating supports brief inrush events in power-rail clamp configurations, while the SOT-523 footprint ensures minimal PCB area usage in space-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum reverse blocking capability before avalanche onset; sufficient for 3.3 V and 5 V rail protection |
| VF @ 1 mA | 290–370 mV - Low conduction loss preserves logic-high margin in level-shifting and clamping circuits |
| IR @ 10 V | ≤1.0 μA - Minimal leakage maintains signal integrity in high-impedance sensing nodes |
| CT @ 1 V, 1 MHz | 2 pF - Enables >100 MHz signal path integrity in USB 2.0 data lines and RF detector inputs |
| RθJA | 833 °C/W - Requires no thermal pad; suitable for passive cooling in ultra-thin consumer wearables |
| IFM | 30 mA - Continuous DC current rating for sustained biasing in LED indicator or sensor bias networks |
| IFS M | 200 mA - Withstands short-duration ESD transients per IEC 61000-4-2 without degradation |
Pinout & Package
Package: SOT-523 - ultra-small plastic surface-mount case (1.60 × 0.80 × 0.50 mm), UL 94V-0 rated, moisture sensitivity level 1, lead-free matte tin finish over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to higher-potential node during conduction; marked side of die face aligns with cathode band |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Internally tied to guard ring; provides transient shunt path to ground in clamp configuration |
| Case / Exposed Pad | Non-electrical mechanical anchor | No internal connection; serves only as thermal and mechanical interface to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge breakdown under fast transients, enabling reliable operation in noisy industrial I/O environments |
| Low 290–370 mV VF at 1 mA | Minimizes voltage offset in precision analog front-ends and battery-monitoring reference dividers |
| 2 pF junction capacitance | Preserves rise/fall time integrity in 480 Mbps USB 2.0 D+/D− lines without added termination |
| SOT-523 footprint | Reduces PCB real estate by 60% vs. SOT-23; compatible with high-density automated placement |
| RoHS-compliant matte tin plating | Eliminates lead-based solder compatibility issues and meets EU WEEE/REACH compliance requirements |
Applications
| USB 2.0 Data Line Protection | Low-Voltage Logic Level Shifting |
|---|---|
Use Scenario: Clamping ESD transients on D+ and D− lines of USB 2.0 peripherals before they reach the PHY IC. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor operating in forward and reverse conduction modes. Use Value: 2 pF capacitance avoids signal distortion at 480 Mbps; 40 V VRRM exceeds USB 5 V rail with safety margin. | Use Scenario: Translating 1.8 V logic outputs to 3.3 V input thresholds in mixed-voltage microcontroller interfaces. IC Role / Device Role / Timing Role: Passive level translator using forward-biased Schottky conduction to lift signal voltage. Use Value: 290–370 mV VF ensures output remains above 1.5 V when driven from 1.8 V source, satisfying 3.3 V VIH min. |
| Portable Battery Voltage Monitoring | RF Detector Bias Network |
Use Scenario: Providing temperature-stable bias current to a resistive divider network measuring Li-ion cell voltage. IC Role / Device Role / Timing Role: Leakage-suppressing series element isolating measurement node from supply ripple. Use Value: ≤1.0 μA IR at 10 V prevents loading error in high-Z voltage dividers used in fuel-gauge ICs. | Use Scenario: Supplying stable DC bias to a GaAs FET-based RF envelope detector in Bluetooth LE receivers. IC Role / Device Role / Timing Role: Low-capacitance DC feed-through element decoupling RF from bias rail. Use Value: 2 pF CT minimizes RF leakage into bias line, preserving detector dynamic range above –30 dBm. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB520S-30T2R | Higher VF (340–470 mV @ 1 mA); same 40 V VRRM; SOD-523 package | Marginally higher conduction loss affects 1.8 V logic translation accuracy | Prefer when legacy SOD-523 footprint compatibility is required over lowest VF |
| BAT54CWS | Lower VRRM (30 V); 300–500 mV VF; dual common-cathode configuration in SOT-323 | Insufficient reverse margin for 5 V rail clamping; dual topology adds routing complexity | Select only for cost-sensitive dual-diode applications where 30 V rating suffices |
Compared with RB520S-30T2R and BAT54CWS, SDMP0340LCT-7 delivers the lowest VF in its class and optimal 40 V/2 pF trade-off for USB 2.0 and ultra-low-power logic interface use-making it the preferred choice where signal fidelity and voltage headroom are critical.
Availability
SDMP0340LCT-7 is available at Aetrix Electronics and suitable for USB interface protection, low-voltage logic translation, portable battery monitoring, and RF detector biasing requiring stable component supply and consistent parametric performance across production lots.
Supply support for SDMP0340LCT-7 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the Philippines.
The SDMP0340LCT-7 belongs to Diodes' high-reliability Schottky diode product line, engineered specifically for low-voltage, high-speed signal integrity applications in portable and battery-powered systems.
FAQ
What is the maximum ambient temperature for continuous operation?
The SDMP0340LCT-7 is rated for continuous operation from –40 °C to +125 °C ambient. At 125 °C, derated power dissipation is approximately 30 mW based on its 833 °C/W thermal resistance and 150 mW room-temperature rating-verified per Figure 5 in DS30266 Rev. 11-2.
Is this diode suitable for bidirectional ESD protection?
No-it is a unidirectional Schottky diode optimized for forward conduction and reverse blocking. For bidirectional ESD protection, a dedicated TVS array like Diodes' D3V3Z1BQ is required. SDMP0340LCT-7 functions as a forward-biased clamp only when anode is biased positive relative to cathode.
Does the SOT-523 package include a thermal pad?
No-the SOT-523 package has no exposed thermal pad. Thermal dissipation relies solely on the two leads and minimal case surface area. The 833 °C/W RθJA value assumes mounting on FR-4 with the recommended 0.4 × 0.51 mm pad layout per Diodes' AP02001 application note.
How does guard ring construction improve reliability?
The guard ring surrounds the active junction to distribute electric field stress away from sharp edges, preventing premature avalanche breakdown during fast transients. This extends operational life under repeated ESD events and improves consistency in production test yield, especially at elevated temperatures.
SDMP0340LCT-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Diode Configuration:
- -
- Technology:
- -
- Voltage - DC Reverse (Vr) (Max):
- -
- Current - Average Rectified (Io) (per Diode):
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Speed:
- -
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- -
- Operating Temperature - Junction:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SDMP0340LCT-7 FAQ
1.How can I place an order for SDMP0340LCT-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SDMP0340LCT-7 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 SDMP0340LCT-7 reliable?
The price and inventory of SDMP0340LCT-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDMP0340LCT-7 is usually 5 days.
3.What payment methods are accepted for SDMP0340LCT-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDMP0340LCT-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDMP0340LCT-7?
SDMP0340LCT-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDMP0340LCT-7 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 SDMP0340LCT-7?
For technical support, including SDMP0340LCT-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDMP0340LCT-7 requirements.
6.How does Aetrix verify that SDMP0340LCT-7 is sourced from the original manufacturer or authorized distributors?
All SDMP0340LCT-7 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 SDMP0340LCT-7 meets industry standards.
7.What is the process for return or replacement of SDMP0340LCT-7?
All SDMP0340LCT-7 units undergo pre-shipment inspection (PSI). If there is an issue with SDMP0340LCT-7, 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 SDMP0340LCT-7 part is unused and in its original packaging.
Return procedure for SDMP0340LCT-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDMP0340LCT-7 Tags
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BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
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BAV99,215
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BAT54SLT1G
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BAV70LT1G
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BAT54CLT1G
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BAT54S-7-F
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BAV99LT1G
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BAT54S,215
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