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Diodes Incorporated SDMP0340LCT-7-F
- Part No.:
- SDMP0340LCT-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SOT-523
- Datasheet:
-
SDMP0340LCT-7-F.pdf
- Description:
- DIODE ARR SCHOTT 40V 30MA SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:6,361
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Product details
Overview
SDMP0340LCT-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode in SOT-523 package, rated for 40 V peak reverse voltage, 30 mA continuous forward current, and 290–370 mV forward voltage at 1 mA-ideal for low-voltage logic clamping and signal rectification in space-constrained portable electronics.
For engineers reviewing the SDMP0340LCT-7-F datasheet, SDMP0340LCT-7-F pinout, SDMP0340LCT-7-F application, or SDMP0340LCT-7-F equivalent, key selection criteria include its low VF (typ. 290 mV), 2 pF capacitance at 1 V, guard ring construction for transient immunity, 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 avalanche-induced transients and improve ESD robustness. Its low junction capacitance (2 pF @ 1 V, 1 MHz) and fast switching enable use in high-frequency signal routing and low-power logic-level translation circuits.
The device operates across –40°C to +125°C and derates linearly above 25°C ambient, delivering 150 mW power dissipation at TA = 25°C with RθJA = 833°C/W. It exhibits non-repetitive surge capability of 200 mA (8.3 ms half-sine) and leakage <1.0 μA at 10 V reverse bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - maximum repetitive reverse blocking voltage; defines safe DC/AC signal swing headroom before breakdown |
| VF @ 1 mA | 290–370 mV - low conduction loss enables efficient clamping in 1.8–3.3 V logic interfaces |
| IR @ 10 V | <1.0 μA - minimal leakage preserves battery life in always-on sensor nodes and standby circuits |
| CT @ 1 V, 1 MHz | 2 pF - low junction capacitance supports >100 MHz signal integrity in RF detector and antenna switch paths |
| PD @ TA=25°C | 150 mW - power limit set by SOT-523 thermal performance; requires derating above 25°C ambient |
| RθJA | 833 °C/W - thermal resistance measured on standard FR-4 PCB; dictates temperature rise per watt dissipated |
| TJ, TSTG | –40 to +125 °C - extended industrial temperature range suitable for automotive cabin modules and outdoor IoT endpoints |
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-plated terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to higher-potential node during conduction; polarity marked by cathode band on package top view |
| Cathode (K) | Forward current exit / reverse blocking terminal | Marked with band; ties to reference or ground in clamp/rectifier configurations; withstands up to 40 V reverse |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Enhances transient voltage suppression and improves ESD tolerance without external TVS components |
| Low forward voltage (VF) | 290 mV typ. at 1 mA enables sub-1 V logic-level clamping in I²C, UART, and GPIO protection |
| Low junction capacitance | 2 pF at 1 V reverse bias minimizes signal distortion in RF front-end detector and mixer bias networks |
| RoHS-compliant & "Green" | Lead-free matte tin plating over Alloy 42; halogen-free molding compound per Diodes Inc. policy effective 2007 week 40+ |
Applications
| USB Data Line Protection | Low-Voltage Logic Clamping |
|---|---|
Use Scenario: Protecting USB 2.0 D+ and D− lines from ESD events and overvoltage coupling in portable chargers and OTG adapters. IC Role / Device Role: Bidirectional clamping diode connected between data line and VBUS or ground rail. Use Value: 290 mV VF ensures minimal signal attenuation; 2 pF CT preserves 480 Mbps eye diagram integrity. | Use Scenario: Level-shifting and overvoltage clamping between 1.8 V microcontroller GPIOs and 3.3 V peripherals in wearables. IC Role / Device Role: Anode tied to I/O pin, cathode to 1.8 V rail-clamps negative excursions and limits positive overshoot. Use Value: Guard ring structure sustains >8 kV HBM ESD without degradation; low leakage avoids pull-up current drain. |
| RF Detector Bias Network | Power Supply OR'ing |
Use Scenario: Providing bias current to RF envelope detectors in Bluetooth LE beacon receivers and sub-GHz ISM band sensors. IC Role / Device Role: Series-connected Schottky providing low-loss DC path while isolating AC-coupled RF signal path. Use Value: 2 pF capacitance prevents RF shunting; 40 V VRRM accommodates detector output swing in 3 V systems. | Use Scenario: OR'ing dual coin-cell or supercapacitor sources in energy-harvesting sensor nodes with ultra-low quiescent current. IC Role / Device Role: Anode-to-source, cathode-to-rail diode preventing backfeed and enabling seamless source switchover. Use Value: 290 mV VF reduces voltage drop versus silicon diodes-preserving >95% of 3 V supply under 10 mA load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAT54C-7-F | Same SOT-523 package; 30 V VRRM (vs. 40 V); VF = 350 mV typ. @ 10 mA | Lower reverse voltage rating limits use in 3.3 V systems with large transients | Select when 30 V blocking suffices and higher IF (200 mA) is needed |
| NSR0340HT1G | SOD-523 package (slightly larger footprint); 40 V VRRM; VF = 370 mV typ. @ 1 mA; IR = 0.5 μA max | Higher leakage spec may affect ultra-low-power sleep modes | Prefer where tighter IR control is critical and SOD-523 layout is acceptable |
Compared with BAT54C-7-F and NSR0340HT1G, SDMP0340LCT-7-F offers the highest reverse voltage margin (40 V) in SOT-523, lowest typical VF at 1 mA, and integrated guard ring-making it optimal for transient-prone, low-voltage, space-constrained designs requiring robust clamping.
Availability
SDMP0340LCT-7-F is available at Aetrix Electronics and suitable for USB interface protection, low-voltage logic clamping, RF detector biasing, and power OR'ing applications requiring stable component supply, consistent parametric performance, and long-term obsolescence management.
Supply support for SDMP0340LCT-7-F 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, low-power, and space-efficient solutions for consumer, industrial, and communications markets.
The SDMP series targets ultra-compact Schottky diodes for signal integrity and protection in portable and battery-powered systems-emphasizing low VF, low CT, and robust transient handling in sub-2 mm packages.
FAQ
What is the polarity marking for SDMP0340LCT-7-F?
The cathode is marked by a visible band on the top surface of the SOT-523 package. Per Diodes Inc. documentation, the anode is the unmarked terminal opposite the band. This matches standard SOT-523 orientation where the band denotes pin 2 (cathode), and pin 1 (anode) is adjacent to the chamfered corner.
Does SDMP0340LCT-7-F support reflow soldering per J-STD-020?
Yes-SDMP0340LCT-7-F is qualified for lead-free reflow per J-STD-020D, with moisture sensitivity level 1 (unlimited floor life at ≤30°C/60% RH). Its matte tin finish and Alloy 42 leadframe ensure compatibility with standard Pb-free peak temperatures up to 260°C.
Is the 40 V VRRM rating DC or AC?
The 40 V VRRM (peak repetitive reverse voltage) applies to both DC and repetitive AC waveforms. It represents the maximum instantaneous reverse voltage the diode can block repeatedly without breakdown-verified at IR = 10 µA. RMS reverse voltage rating is 28 V, consistent with sinusoidal waveform derating.
Can SDMP0340LCT-7-F replace SDMP0340LT-7-F in a design?
Yes-SDMP0340LCT-7-F and SDMP0340LT-7-F share identical electrical specs, thermal characteristics, and SOT-523 mechanical outline. The suffix difference (LCT vs. LT) reflects internal wafer lot or process variant only; Diodes Inc. confirms full functional and form-fit compatibility across the SDMP0340xT family.
SDMP0340LCT-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 30mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 370 mV @ 1 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 10 V
- Operating Temperature - Junction:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-523
SDMP0340LCT-7-F FAQ
1.How can I place an order for SDMP0340LCT-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SDMP0340LCT-7-F 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-F reliable?
The price and inventory of SDMP0340LCT-7-F 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-F is usually 5 days.
3.What payment methods are accepted for SDMP0340LCT-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDMP0340LCT-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDMP0340LCT-7-F?
SDMP0340LCT-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDMP0340LCT-7-F 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-F?
For technical support, including SDMP0340LCT-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDMP0340LCT-7-F requirements.
6.How does Aetrix verify that SDMP0340LCT-7-F is sourced from the original manufacturer or authorized distributors?
All SDMP0340LCT-7-F 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-F meets industry standards.
7.What is the process for return or replacement of SDMP0340LCT-7-F?
All SDMP0340LCT-7-F units undergo pre-shipment inspection (PSI). If there is an issue with SDMP0340LCT-7-F, 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-F part is unused and in its original packaging.
Return procedure for SDMP0340LCT-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDMP0340LCT-7-F Tags
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BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
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BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
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