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Diodes Incorporated SDMP0340LAT-7-F
- Part No.:
- SDMP0340LAT-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SOT-523
- Datasheet:
-
SDMP0340LAT-7-F.pdf
- Description:
- DIODE ARR SCHOTT 40V 30MA SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:101,334
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Product details
Overview
SDMP0340LAT-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 - optimized for low-voltage logic interface and signal clamping in portable electronics.
For engineers reviewing the SDMP0340LAT-7-F datasheet, SDMP0340LAT-7-F pinout, SDMP0340LAT-7-F application, or SDMP0340LAT-7-F equivalent, key selection criteria include low VF for battery-sensitive circuits, 2 pF capacitance at 1 V 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 and improve reliability under fast-rising voltage stress. Its low 290–370 mV forward voltage at 1 mA enables efficient clamping in 1.8 V and 3.3 V logic families without loading source drivers.
With only 2 pF total capacitance at 1 V reverse bias and 1.0 μA max leakage at 10 V, it supports high-frequency signal routing and low-power sensing paths where parasitic loading must be minimized - typical in RF front-end biasing and USB/UART line protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage before avalanche; sets safe operating limit for 3.3 V/5 V rail clamping |
| VF @ 1 mA | 290–370 mV - Low conduction loss preserves signal swing in logic-level translation and level-shifting circuits |
| IR @ 10 V | ≤1.0 μA - Minimal leakage ensures stable DC bias in high-impedance sensor nodes and reference paths |
| CT @ 1 V, 1 MHz | 2 pF - Enables clean signal integrity up to ~80 MHz in data lines without capacitive distortion |
| PD | 150 mW - Power dissipation limit at 25°C ambient; derates to zero at 125°C per 833°C/W thermal resistance |
| TJ Range | −40 to +125°C - Supports operation in automotive cabin modules and industrial edge sensors |
Pinout & Package
Package: SOT-523 - ultra-small plastic surface-mount case (1.6 × 0.8 × 0.6 mm), UL 94V-0 rated, moisture sensitivity Level 1, compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to higher-potential node during conduction; marked by cathode band on package top view |
| Cathode | Forward current exit / reverse blocking terminal | Connected to lower-potential node; polarity critical for clamping direction and ESD protection orientation |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge breakdown during fast transients, improving ESD immunity beyond IEC 61000-4-2 Level 2 |
| Low forward voltage (290–370 mV) | Reduces voltage drop in series-connected logic interfaces, preserving noise margin in 1.8 V systems |
| 2 pF capacitance at 1 V | Minimizes signal delay and reflection in high-speed digital I/O lines such as I²C and SPI |
| Lead-free / RoHS-compliant | Matte tin finish over Alloy 42 leadframe meets JEDEC J-STD-609 Class 1a and eliminates Pb contamination risk in medical/portable assemblies |
Applications
| USB 2.0 Data Line Protection | Low-Voltage Logic-Level Translation |
|---|---|
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 acting as low-capacitance shunt path during ±8 kV contact discharge. Use Value: 2 pF capacitance avoids signal rise-time degradation; 40 V VRRM safely isolates 3.3 V bus during normal operation. | Use Scenario: Translating signals between 1.8 V microcontroller GPIOs and 3.3 V sensor outputs. IC Role / Device Role / Timing Role: Passive level shifter using forward-biased Schottky conduction to lift low-side logic while blocking reverse current. Use Value: 290–370 mV VF enables reliable 1.8 V → 3.3 V translation without active circuitry or timing skew. |
| RF Bias Feed Networks | Portable Device Power-Rail Clamp |
Use Scenario: Providing DC bias to GaAs FET amplifiers while isolating RF signal path from supply ripple. IC Role / Device Role / Timing Role: Low-loss DC feed diode with minimal RF insertion loss due to low junction capacitance and series resistance. Use Value: 2 pF CT and sub-1 Ω dynamic resistance maintain >500 MHz bandwidth in LNA bias networks. | Use Scenario: Preventing reverse current flow from backup coin-cell battery into main Li-ion supply during power failover. IC Role / Device Role / Timing Role: Reverse-blocking isolation diode in power-path management of wearables and Bluetooth headsets. Use Value: 1.0 μA IR at 10 V minimizes self-discharge; 150 mW PD accommodates brief surge during hot-swap events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB520S-30T1G | 40 V VRRM, 200 mA IF, 320 mV VF @ 10 mA, SOD-523 package | Higher current rating but larger 0.8 mm × 0.6 mm footprint vs. SOT-523's 1.6 mm × 0.8 mm | Preferred when board space allows and higher surge tolerance (200 mA IFSM) is required |
| BAT54C-7-F | 30 V VRRM, 200 mA IF, dual common-cathode configuration, SOT-23 package | Lower voltage rating and larger SOT-23 footprint; includes dual diode for complementary signal paths | Chosen for cost-sensitive dual-diode layouts where 30 V rating suffices and PCB area is less constrained |
Compared with RB520S-30T1G and BAT54C-7-F, SDMP0340LAT-7-F delivers optimal space efficiency in ultra-dense portable designs while maintaining tight VF consistency at microamp-level currents - critical for precision biasing and low-leakage clamping where larger-footprint alternatives introduce layout overhead or voltage margin risk.
Availability
SDMP0340LAT-7-F is available at Aetrix Electronics and suitable for USB interface protection, low-voltage logic translation, RF bias feed networks, and portable device power-rail clamping requiring stable component supply across high-mix production runs.
Supply support for SDMP0340LAT-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 SDMP0340LAT-7-F belongs to Diodes' high-reliability Schottky diode product line, engineered specifically for space-constrained, low-power portable electronics requiring consistent low VF, low CT, and robust transient performance.
FAQ
What is the maximum reverse voltage rating for SDMP0340LAT-7-F?
The SDMP0340LAT-7-F has a peak repetitive reverse voltage (VRRM) rating of 40 V, verified per datasheet DS30266 Rev. 11-2. This rating applies under standard test conditions (TA = 25°C) and defines the absolute maximum reverse bias the diode can withstand without breakdown during normal operation.
Does SDMP0340LAT-7-F meet RoHS and halogen-free requirements?
Yes - SDMP0340LAT-7-F is lead-free/RoHS compliant (per J-STD-609 Class 1a) and classified as a "Green" device per Diodes Inc.'s policy. It uses halogen-free molding compound (introduced with Date Code UO, week 40, 2007) and matte tin plating over Alloy 42 leadframe.
What is the thermal resistance junction-to-ambient for this diode?
The thermal resistance from junction to ambient (RθJA) is 833°C/W, measured on a standard FR-4 PCB with the recommended pad layout per Diodes' AP02001 application note. This value assumes no additional copper pour or heatsinking.
Can SDMP0340LAT-7-F replace BAT54A in existing designs?
Not directly - BAT54A is a dual-anode single-cathode SOT-23 Schottky with 30 V VRRM and different pinout. SDMP0340LAT-7-F is single-diode SOT-523 with 40 V rating and anode/cathode orientation matching standard SOT-523 marking. Layout and schematic changes are required for substitution.
SDMP0340LAT-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 Anode
- 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
SDMP0340LAT-7-F FAQ
1.How can I place an order for SDMP0340LAT-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SDMP0340LAT-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 SDMP0340LAT-7-F reliable?
The price and inventory of SDMP0340LAT-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 SDMP0340LAT-7-F is usually 5 days.
3.What payment methods are accepted for SDMP0340LAT-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDMP0340LAT-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDMP0340LAT-7-F?
SDMP0340LAT-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDMP0340LAT-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 SDMP0340LAT-7-F?
For technical support, including SDMP0340LAT-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDMP0340LAT-7-F requirements.
6.How does Aetrix verify that SDMP0340LAT-7-F is sourced from the original manufacturer or authorized distributors?
All SDMP0340LAT-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 SDMP0340LAT-7-F meets industry standards.
7.What is the process for return or replacement of SDMP0340LAT-7-F?
All SDMP0340LAT-7-F units undergo pre-shipment inspection (PSI). If there is an issue with SDMP0340LAT-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 SDMP0340LAT-7-F part is unused and in its original packaging.
Return procedure for SDMP0340LAT-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDMP0340LAT-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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