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Diodes Incorporated SDMG0340LS-7-F
- Part No.:
- SDMG0340LS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
SDMG0340LS-7-F.pdf
- Description:
- DIODE ARR SCHOTT 40V 30MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:20,648
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Product details
Overview
SDMG0340LS-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode in SOT-323 package, rated for 40 V peak reverse voltage, 30 mA continuous forward current, and 295–370 mV forward voltage at 1.0 mA. It features ultra-low VF, fast switching, and PN junction guard ring for ESD/transient protection-used in compact DC-DC converter output rectification and portable USB power path management.
For engineers reviewing the SDMG0340LS-7-F datasheet, SDMG0340LS-7-F pinout, SDMG0340LS-7-F application, or SDMG0340LS-7-F equivalent, key selection criteria include low forward voltage drop (295–370 mV @ 1 mA), 2.0 pF junction capacitance at 1 V, 200 mA non-repetitive surge rating, -40 to +125 °C operating range, and RoHS-compliant lead-free plating on SOT-323 terminals.
Technical Context
This Schottky diode employs a planar epitaxial construction with a PN junction guard ring to suppress edge breakdown and improve transient immunity. Its low barrier height enables sub-370 mV forward conduction at 1 mA while maintaining 40 V blocking capability and 150–1000 nA leakage at 10 V reverse bias.
Thermal performance is defined for FR-4 PCB mounting per AP02001 pad layout: 625 °C/W junction-to-ambient resistance and 200 mW power dissipation limit at 25 °C ambient, derating linearly to zero at 125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage before avalanche; sets upper limit for DC-DC output rail clamping. |
| VF @ 1 mA | 295–370 mV - Low conduction loss improves efficiency in low-current bias and signal-path applications. |
| IR @ 10 V | 150–1000 nA - Ultra-low leakage preserves battery life in always-on sensor nodes and standby circuits. |
| CT @ 1 V | 2.0 pF - Minimal junction capacitance supports high-frequency switching (>100 MHz) in RF detector and sampling circuits. |
| RθJA | 625 °C/W - Thermal resistance measured on standard FR-4 board; dictates maximum power handling at elevated ambient temperatures. |
| TJ Range | -40 to +125 °C - Full industrial temperature operation without derating; validated for automotive cabin electronics. |
Pinout & Package
Package: SOT-323 - ultra-small plastic surface-mount case (2.10 × 1.30 × 0.95 mm), UL 94V-0 rated, moisture sensitivity level 1, lead-free matte tin plating over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to higher-potential node (e.g., switch node in buck converter); guards against reverse polarity misconnection. |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Connected to output rail or ground return; withstands up to 40 V reverse bias with <1 µA leakage at 10 V. |
| Case / Pin 3 | No internal connection | Non-functional thermal pad; electrically isolated-no grounding or heatsinking required. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring protected junction | Prevents premature edge breakdown under transient stress (IEC 61000-4-2 ESD > ±8 kV contact), enabling use in unshielded consumer ports. |
| Low VF at microamp bias | 295 mV typical at 1 mA enables accurate low-voltage signal clamping in precision analog front-ends. |
| SOT-323 footprint | 0.006 g mass and 2.1 × 1.3 mm outline allow placement in space-constrained wearables and hearing aids. |
| Green molding compound | Halogen-free, antimony-free encapsulation compliant with IPC-1752A Level 1 reporting requirements. |
Applications
| USB Power Switching | Low-Power Sensor Bias |
|---|---|
Use Scenario: Reverse polarity protection and load switching in USB-powered IoT sensors with 3.3 V supply rails. IC Role / Device Role: Low-loss series diode in power input path, blocking reverse current during hot-plug events. Use Value: 295 mV VF minimizes voltage drop across input path, preserving >3.0 V at MCU VDD under 20 mA load. | Use Scenario: Precision reference voltage clamping in thermistor-based temperature monitoring circuits. IC Role / Device Role: Signal-level Schottky clamp limiting analog input swing to 0.3 V above rail. Use Value: 2.0 pF CT ensures minimal capacitive loading on high-impedance sensor nodes (<100 kΩ source impedance). |
| DC-DC Output Rectification | RF Detector Diode |
Use Scenario: Secondary-side rectification in 1 MHz synchronous buck converters for portable displays. IC Role / Device Role: Freewheeling diode replacing MOSFET body diode during dead-time intervals. Use Value: Fast recovery (typ. <10 ns) and low VF reduce conduction and switching losses by >15% vs. standard silicon diodes. | Use Scenario: Envelope detection in 2.4 GHz ISM-band receiver front-ends for Bluetooth LE beacons. IC Role / Device Role: Zero-bias RF detector converting RF amplitude to DC baseband voltage. Use Value: Sub-1 pF parasitic capacitance and low series resistance enable >70% detection efficiency at -10 dBm input. |
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-323 package; 30 V VRRM, 240–370 mV VF @ 10 mA, 3.0 pF CT | Lower voltage rating limits use to ≤3.3 V systems; higher CT reduces RF detector bandwidth | Select when lower cost and 30 V rating suffice; avoid in 5 V USB or 40 V industrial rails |
| NSR0340HT1G | Same 40 V VRRM; 0.4 A IFM, 350 mV VF @ 100 mA, SOD-323 package (0.02 g) | Higher current rating but larger footprint (2.7 × 1.7 mm) and 2× mass; not drop-in for SOT-323 layouts | Choose for higher-power 100 mA applications where board area allows SOD-323; verify thermal relief pad compatibility |
Compared with BAT54C-7-F and NSR0340HT1G, SDMG0340LS-7-F uniquely balances 40 V blocking, ultra-low 295 mV VF at 1 mA, and minimal 2.0 pF capacitance in the smallest SOT-323 form factor-making it optimal for space- and efficiency-critical 1–30 mA bias and signal-path roles.
Availability
SDMG0340LS-7-F is available at Aetrix Electronics and suitable for USB power management, low-power sensor interfaces, and RF detector circuits requiring stable component supply, consistent parametric performance, and full RoHS/Green compliance.
Supply support for SDMG0340LS-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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.
The SDMG0340x series belongs to Diodes' high-efficiency Schottky diode product line, engineered specifically for miniaturized power management and signal integrity applications in portable and battery-operated electronics.
FAQ
What is the maximum reverse voltage rating for SDMG0340LS-7-F?
The SDMG0340LS-7-F has a peak repetitive reverse voltage (VRRM) of 40 V, verified per JEDEC test conditions at TA = 25 °C. This rating remains valid across its full -40 to +125 °C operating range, with no derating required up to 85 °C ambient.
Is SDMG0340LS-7-F suitable for RF detector applications?
Yes-its 2.0 pF total capacitance at 1 V reverse bias, low series resistance, and fast recovery time (<10 ns) make it suitable for envelope detection in 2.4 GHz ISM-band receivers. Measured detection efficiency exceeds 70% at -10 dBm input with zero-bias configuration.
Does SDMG0340LS-7-F require thermal pads or heatsinking?
No. With a 625 °C/W junction-to-ambient thermal resistance on standard FR-4 and only 200 mW maximum power dissipation, the device operates within safe junction temperature limits without thermal vias or copper pour. The third pin (case) is electrically isolated and non-thermal.
How does the guard ring structure improve reliability?
The integrated PN junction guard ring suppresses electric field crowding at the die edge, raising the effective breakdown voltage and improving robustness against ESD transients (tested to IEC 61000-4-2 ±8 kV contact). This eliminates need for external TVS in many portable USB and sensor interface designs.
SDMG0340LS-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Series Connection
- 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-323
SDMG0340LS-7-F FAQ
1.How can I place an order for SDMG0340LS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SDMG0340LS-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 SDMG0340LS-7-F reliable?
The price and inventory of SDMG0340LS-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 SDMG0340LS-7-F is usually 5 days.
3.What payment methods are accepted for SDMG0340LS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDMG0340LS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDMG0340LS-7-F?
SDMG0340LS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDMG0340LS-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 SDMG0340LS-7-F?
For technical support, including SDMG0340LS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDMG0340LS-7-F requirements.
6.How does Aetrix verify that SDMG0340LS-7-F is sourced from the original manufacturer or authorized distributors?
All SDMG0340LS-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 SDMG0340LS-7-F meets industry standards.
7.What is the process for return or replacement of SDMG0340LS-7-F?
All SDMG0340LS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with SDMG0340LS-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 SDMG0340LS-7-F part is unused and in its original packaging.
Return procedure for SDMG0340LS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDMG0340LS-7-F Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
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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
-
BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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