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Diodes Incorporated SDMG0340LA-7-F
- Part No.:
- SDMG0340LA-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
SDMG0340LA-7-F.pdf
- Description:
- DIODE ARR SCHOTT 40V 30MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,995
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Product details
Overview
SDMG0340LA-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-designed for low-power signal rectification and ESD-protected I/O clamping in portable electronics.
For engineers reviewing the SDMG0340LA-7-F datasheet, SDMG0340LA-7-F pinout, SDMG0340LA-7-F application, or SDMG0340LA-7-F equivalent, key selection criteria include ultra-low VF for battery-sensitive bias networks, 2.0 pF junction capacitance for high-frequency signal path integrity, and PN guard ring implementation for transient immunity in space-constrained USB/SDIO interfaces.
Technical Context
This Schottky diode uses a planar silicon structure with a PN junction guard ring to suppress edge breakdown and improve ESD robustness (per JESD22-A114), enabling reliable operation under fast transients without external TVS. Its low 625 °C/W thermal resistance relies on FR-4 PCB mounting per AP02001 layout.
It operates across –40 °C to +125 °C ambient, with derated power dissipation down to 0 mW at 125 °C. Reverse recovery time is not specified as a parameter but is inherently fast due to majority-carrier conduction-typical trr is ≤10 ns at IF = 10 mA per Fig. 4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - maximum repetitive reverse blocking capability for signal-level clamp or flyback protection |
| IF | 30 mA - continuous forward current rating defining usable DC bias range in sensor interface circuits |
| VF | 295–370 mV @ 1.0 mA - enables sub-0.4 V forward drop for low-voltage logic-level translation |
| CT | 2.0 pF @ 1 V, 1 MHz - minimizes capacitive loading on high-speed data lines (e.g., SD card clock) |
| IR | 150–1000 nA @ 10 V - ensures negligible leakage in battery-backed real-time clock backup paths |
| RθJA | 625 °C/W - requires minimal copper area for thermal management in thin-profile handheld PCBs |
Pinout & Package
Package: SOT-323 - ultra-small plastic surface-mount case (2.10 × 1.30 × 0.95 mm), UL 94V-0 rated, 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 in clamping or rectification path; marked side of package aligns with cathode band |
| Cathode (Pin 2) | Forward current exit / reverse voltage reference | Typically tied to ground or lower-potential rail; serves as ESD return path via guard ring structure |
| NC (Pin 3) | No internal connection | Electrically isolated terminal; must remain unconnected to avoid parasitic coupling or mechanical stress |
Key Features
| Feature | Design Value |
|---|---|
| PN junction guard ring | Enhances ESD tolerance (HBM > 8 kV typical) and transient voltage suppression without added components |
| Ultra-low forward voltage | 295 mV typical at 1 mA enables efficient voltage translation in 1.8 V/3.3 V mixed-signal I/O domains |
| SOT-323 footprint | 0.006 g mass and 2.1 mm × 1.3 mm area support miniaturization in wearables and IoT sensors |
| Green molding compound | Halogen-free, RoHS-compliant encapsulation meeting IPC-J-STD-020D Level 1 moisture sensitivity |
Applications
| USB 2.0 Data Line Protection | Low-Voltage Sensor Biasing |
|---|---|
Use Scenario: Clamping ESD transients on D+ and D− lines of USB 2.0 peripherals before entering PHY IC. IC Role / Device Role / Timing Role: Bidirectional ESD protection diode with low CT to preserve 480 Mbps signal integrity. Use Value: 2.0 pF capacitance prevents signal rise-time degradation; guard ring sustains >8 kV HBM without latch-up. | Use Scenario: Providing stable bias current to analog temperature or humidity sensors operating from coin-cell batteries. IC Role / Device Role / Timing Role: Low-leakage series rectifier in precision current source path. Use Value: <1 µA IR at 10 V ensures <1% error in 100 nA sensor bias currents over full temperature range. |
| SD Card Interface Clamping | RF Front-End Power Sequencing |
Use Scenario: Protecting SDIO command/data lines against contact discharge during hot-plug insertion. IC Role / Device Role / Timing Role: Signal-line transient suppressor with minimal parasitic capacitance. Use Value: 295 mV VF avoids voltage droop on 1.8 V SDIO supply rails during active clamping events. | Use Scenario: Isolating LDO enable signals between RF transceiver and baseband processor during power-up sequencing. IC Role / Device Role / Timing Role: Low-capacitance level-shifting diode in control logic path. Use Value: SOT-323 size allows placement adjacent to BGA pads; 625 °C/W RθJA prevents thermal drift in dense RF modules. |
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 | Higher VF (320–420 mV @ 10 mA), same SOT-323, dual configuration | Designed for dual-channel clamping; less optimal for single-line low-leakage bias | Select when dual-anode/cathode topology matches board layout and leakage budget permits |
| NSR0330P2T5G | Lower VF (270 mV typ @ 10 mA), SOD-523, 1.0 mm × 0.6 mm | Smaller footprint but higher IR (2 µA @ 10 V); no guard ring | Prefer for ultra-dense layouts where ESD robustness is secondary to size reduction |
Compared with BAT54C-7-F and NSR0330P2T5G, SDMG0340LA-7-F uniquely balances ultra-low leakage (<1 µA), guard-ring-enhanced ESD immunity, and SOT-323 manufacturability-making it optimal for single-line, battery-critical I/O protection where reliability trumps minimal size.
Availability
SDMG0340LA-7-F is available at Aetrix Electronics and suitable for USB interface protection, SD card signal clamping, and low-power sensor biasing requiring stable component supply across production lifecycles.
Supply support for SDMG0340LA-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, application-optimized components for consumer, computing, and industrial markets.
The SDMG0340LA-7-F belongs to Diodes' SMD Schottky diode product line, engineered specifically for space-constrained, low-power signal integrity applications demanding ESD resilience and consistent forward voltage performance.
FAQ
What is the maximum junction temperature for SDMG0340LA-7-F?
The device supports operation up to +125 °C junction temperature, with derated power dissipation beginning at +25 °C ambient per Fig. 5. At 125 °C ambient, PD drops to 0 mW; full 200 mW rating applies only at 25 °C with AP02001-compliant PCB layout.
Does SDMG0340LA-7-F have a specified reverse recovery time?
No-reverse recovery time is not specified in the datasheet because Schottky diodes are majority-carrier devices with inherently fast switching. Figure 4 shows typical trr ≤10 ns at IF = 10 mA, but this is a characterization curve, not a guaranteed parameter.
Is the SOT-323 package of SDMG0340LA-7-F compatible with standard reflow profiles?
Yes-the device meets J-STD-020D Level 1 moisture sensitivity and is qualified for standard Pb-free reflow profiles (peak 260 °C, 10-second duration). Its green molding compound and matte tin finish ensure solderability without pre-bake requirements.
How is the PN guard ring implemented in SDMG0340LA-7-F?
The guard ring is a diffused PN structure surrounding the main Schottky junction, fabricated monolithically in the silicon die. It redistributes electric field at the junction periphery, raising breakdown voltage margin and improving robustness against ESD-induced localized heating per JESD22-A114 test conditions.
SDMG0340LA-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 Common Anode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 30mA
- 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
SDMG0340LA-7-F FAQ
1.How can I place an order for SDMG0340LA-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SDMG0340LA-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 SDMG0340LA-7-F reliable?
The price and inventory of SDMG0340LA-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 SDMG0340LA-7-F is usually 5 days.
3.What payment methods are accepted for SDMG0340LA-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDMG0340LA-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDMG0340LA-7-F?
SDMG0340LA-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDMG0340LA-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 SDMG0340LA-7-F?
For technical support, including SDMG0340LA-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDMG0340LA-7-F requirements.
6.How does Aetrix verify that SDMG0340LA-7-F is sourced from the original manufacturer or authorized distributors?
All SDMG0340LA-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 SDMG0340LA-7-F meets industry standards.
7.What is the process for return or replacement of SDMG0340LA-7-F?
All SDMG0340LA-7-F units undergo pre-shipment inspection (PSI). If there is an issue with SDMG0340LA-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 SDMG0340LA-7-F part is unused and in its original packaging.
Return procedure for SDMG0340LA-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDMG0340LA-7-F 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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BAT54CLT1G
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BAV99LT1G
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