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Diodes Incorporated SDMP0340LST-7-F
- Part No.:
- SDMP0340LST-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SOT-523
- Datasheet:
-
SDMP0340LST-7-F.pdf
- Description:
- DIODE ARR SCHOTT 40V 30MA SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:23,552
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Product details
Overview
SDMP0340LST-7-F 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 drop at 1 mA; designed for low-voltage logic clamping and signal rectification in portable power management circuits.
For engineers reviewing the SDMP0340LST-7-F datasheet, SDMP0340LST-7-F pinout, SDMP0340LST-7-F application, or SDMP0340LST-7-F equivalent, key selection criteria include low VF for battery-sensitive designs, 2 pF capacitance for high-speed signal integrity, guard ring construction for ESD robustness, and RoHS-compliant matte tin plating on Alloy 42 leadframe.
Technical Context
This Schottky diode employs guard ring die construction to suppress transient-induced junction breakdown, enabling reliable operation under fast-rising edge conditions in I/O protection circuits. Its low 290–370 mV forward voltage at 1 mA supports sub-logic-level clamping without disturbing TTL or CMOS thresholds.
Thermal resistance of 833 °C/W (junction-to-ambient, FR-4 board) and 150 mW power dissipation define its derating envelope up to +125 °C ambient; reverse leakage remains ≤1.0 μA at 10 V, supporting precision bias networks and low-current hold-up applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum reverse blocking capability before avalanche onset; ensures compatibility with 3.3 V and 5 V rail clamping. |
| VF @ 1 mA | 290–370 mV - Low conduction loss preserves signal margin in logic-level translation paths. |
| IR @ 10 V | ≤1.0 μA - Minimal leakage maintains accuracy in high-impedance sensing nodes. |
| CT @ 1 V, 1 MHz | 2 pF - Enables use in >100 MHz signal routing without capacitive loading distortion. |
| Package | SOT-523 - 1.6 mm × 0.8 mm footprint; compatible with fine-pitch automated placement and reflow. |
| RθJA | 833 °C/W - Requires thermal pad or copper pour for sustained >20 mA operation above 60 °C ambient. |
| TJ Range | −40 to +125 °C - Validated for automotive cabin and industrial control environments. |
Pinout & Package
SOT-523 is a 3-terminal ultra-small plastic package with gull-wing leads; polarity is marked by cathode band on top surface. Dimensions: 1.60 mm (L) × 0.80 mm (W) × 0.50 mm (H); moisture sensitivity level 1 per J-STD-020D.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to higher-potential node during conduction; requires trace width ≥0.2 mm for 30 mA DC. |
| Cathode | Forward current exit / reverse blocking terminal | Marked side; ties to reference or ground plane for clamping; guards against ESD via guard ring structure. |
| Case (non-connected) | Thermal path only | No electrical connection; serves as mechanical anchor and minor heat sink; no PCB copper isolation required. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses localized electric field crowding, raising transient immunity beyond standard Schottky limits. |
| Low 290–370 mV VF at 1 mA | Enables direct interface with 1.8 V and 2.5 V logic families without level-shifter overhead. |
| 2 pF total capacitance | Minimizes signal rise-time degradation in USB 2.0 data lines and I²C bus termination. |
| Lead-free matte tin plating | Ensures solder joint reliability under multiple reflow cycles and eliminates Pb-related intermetallic growth concerns. |
| Moisture sensitivity Level 1 | Permits indefinite dry storage without baking prior to assembly-reducing manufacturing overhead. |
Applications
| USB Data Line Protection | Low-Voltage Logic Clamping |
|---|---|
Use Scenario: Bidirectional ESD protection on USB 2.0 D+ and D− lines in portable chargers and OTG adapters. IC Role / Device Role: Passive clamping diode shunting transients to VBUS or GND while preserving signal integrity. Use Value: 2 pF capacitance avoids signal jitter; 40 V VRRM withstands VBUS surges; guard ring prevents latch-up during ±8 kV contact discharge. | Use Scenario: Input protection for microcontroller GPIO pins operating at 1.8 V or 2.5 V supply rails. IC Role / Device Role: Rail-to-rail clamp limiting input voltage to safe levels during hot-plug or noise events. Use Value: 290–370 mV VF ensures clamping threshold stays below logic high threshold, preventing false triggering. |
| RF Detector Bias Network | Power Sequencing Isolation |
Use Scenario: DC bias feed and RF choke bypass in 2.4 GHz ISM-band receiver front-ends. IC Role / Device Role: Low-capacitance DC path isolator blocking RF while passing bias current. Use Value: 2 pF CT minimizes RF leakage into bias supply; ≤1.0 μA IR prevents detector offset drift over temperature. | Use Scenario: Preventing backfeed between sequenced power domains (e.g., 3.3 V → 1.2 V core) in FPGA-based systems. IC Role / Device Role: Unidirectional isolation diode ensuring controlled power-up order. Use Value: 30 mA IFM rating supports typical sequencing currents; low VF reduces voltage drop across isolation path. |
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 (350–500 mV @ 10 mA), same SOT-523 package, 30 V VRRM | Limited to ≤3.3 V systems due to lower reverse rating | Prefer when cost sensitivity outweighs VF optimization and 40 V margin is unnecessary. |
| NSR0340HT1G | Same 40 V VRRM, 0.32 V VF typ @ 1 mA, SOD-523 (identical footprint) | RoHS-compliant but not "Green" compound; slightly higher RθJA (900 °C/W) | Select when legacy qualification or alternate sourcing is required without changing layout. |
Compared with BAT54C-7-F and NSR0340HT1G, SDMP0340LST-7-F delivers the lowest VF in its class at 1 mA, tighter leakage control, and Diodes Inc.'s Green compound compliance-making it optimal for battery-constrained, high-reliability signal-path applications where every millivolt and picofarad matters.
Availability
SDMP0340LST-7-F is available at Aetrix Electronics and suitable for USB interface protection, low-voltage logic clamping, RF bias networks, and power sequencing isolation requiring stable component supply and full traceability.
Supply support for SDMP0340LST-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-efficiency power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The SDMP0340LST-7-F belongs to Diodes' precision Schottky diode product line, engineered specifically for ultra-low-voltage signal conditioning and ESD-hardened interfaces in space-constrained portable electronics.
FAQ
What is the maximum continuous forward current rating for SDMP0340LST-7-F?
The SDMP0340LST-7-F is rated for 30 mA continuous forward current at 25 °C ambient on a standard FR-4 board with recommended pad layout. Derating begins above 25 °C per the 833 °C/W thermal resistance curve, reaching zero allowable current at approximately 125 °C ambient.
Does SDMP0340LST-7-F have a documented reverse recovery time (trr)?
Yes-Figure 4 in the official DS30266 datasheet specifies typical trr of 2–10 ns depending on forward current (5–200 mA). This ultrafast recovery enables use in high-frequency switching and RF coupling applications without tail current artifacts.
Is the SOT-523 package of SDMP0340LST-7-F compatible with standard pick-and-place equipment?
Yes-the SOT-523 package meets JEDEC standards for automated assembly, with gull-wing leads spaced at 0.95 mm pitch and defined land pattern dimensions (X = 0.4 mm, Y = 0.51 mm, C = 1.3 mm) published in Diodes' AP02001 application note.
How does the guard ring construction improve transient performance?
The guard ring physically surrounds the active Schottky junction, redistributing electric field gradients during fast transients. This delays avalanche onset and prevents localized thermal runaway, allowing the device to survive ±8 kV IEC 61000-4-2 contact discharge without parametric shift or failure.
SDMP0340LST-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 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-523
SDMP0340LST-7-F FAQ
1.How can I place an order for SDMP0340LST-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SDMP0340LST-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 SDMP0340LST-7-F reliable?
The price and inventory of SDMP0340LST-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 SDMP0340LST-7-F is usually 5 days.
3.What payment methods are accepted for SDMP0340LST-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDMP0340LST-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDMP0340LST-7-F?
SDMP0340LST-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDMP0340LST-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 SDMP0340LST-7-F?
For technical support, including SDMP0340LST-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDMP0340LST-7-F requirements.
6.How does Aetrix verify that SDMP0340LST-7-F is sourced from the original manufacturer or authorized distributors?
All SDMP0340LST-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 SDMP0340LST-7-F meets industry standards.
7.What is the process for return or replacement of SDMP0340LST-7-F?
All SDMP0340LST-7-F units undergo pre-shipment inspection (PSI). If there is an issue with SDMP0340LST-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 SDMP0340LST-7-F part is unused and in its original packaging.
Return procedure for SDMP0340LST-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDMP0340LST-7-F Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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