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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Diodes Incorporated SDM10U45-7

Name: SDM10U45-7
Brand: Diodes Incorporated
SKU: SDM10U45-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SDM10U45-7

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: SC-79, SOD-523

Datasheet:: SDM10U45-7.pdf

Description:: DIODE SCHOTTKY 40V 100MA SOD523

Quantity:: RFQ Add To RFQ list

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Inventory:8,831

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Product details

Overview

SDM10U45-7 from Diodes Incorporated is a surface-mount Schottky barrier diode in SOD523 package, rated for 45 V peak reverse voltage and 100 mA average forward current, with low 280–580 mV forward voltage drop at 1–100 mA, low 4–15 pF capacitance at 10 V, and optimized for high-speed signal rectification in space-constrained portable electronics.

For engineers reviewing the SDM10U45-7 datasheet, SDM10U45-7 pinout, SDM10U45-7 application, or SDM10U45-7 equivalent, key selection criteria include its ultra-small SOD523 footprint, low VF at low IF, guard ring construction for transient immunity, and suitability for 1.8 V/3.3 V logic-level clamping and RF detector circuits.

Technical Context

This Schottky diode uses platinum-silicide or similar low-barrier metal-semiconductor junction to achieve fast switching (no minority-carrier storage) and low forward conduction loss. Its guard ring structure isolates the active junction from surface contamination and edge breakdown, improving reliability under transient voltage stress.

The device operates across –40 °C to +125 °C, with thermal resistance R_θJA = 667 °C/W on FR-4 board, and derates linearly to zero power dissipation at 150 °C ambient. Capacitance varies from ~15 pF at 0 V to ~5 pF at 25 V reverse bias, supporting RF and high-frequency detection roles.

Key Specifications

Parameter	Value and Actual Design Meaning
Peak Reverse Voltage	45 V - supports input protection up to 36 V DC rails with margin
Forward Voltage @ 100 mA	580 mV max - minimizes conduction loss in low-voltage power path sensing
Total Capacitance @ 10 V	4–15 pF - enables use in 100 MHz+ RF detector and sampling applications
Average Forward Current	100 mA - suitable for signal-level rectification, not power conversion
Operating Temperature	–40 to +125 °C - qualified for extended industrial and automotive cabin environments
Package	SOD523 - 1.25 mm × 0.85 mm footprint, compatible with 0201 pick-and-place

Pinout & Package

Two-terminal SOD523 package with cathode indicated by band marking; anode and cathode terminals are co-planar, solderable with matte tin finish per MIL-STD-202 Method 208.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node in clamp or rectifier configuration
Cathode (banded)	Forward current exit / reverse blocking terminal	Connected to higher-potential node; band identifies polarity for automated optical inspection

Key Features

Feature	Design Value
Low forward voltage drop	280 mV typ. @ 1 mA - enables accurate low-level signal detection without threshold error
Guard ring construction	Prevents edge breakdown under fast transients - improves ESD robustness in I/O protection
Low capacitance	4 pF typ. @ 10 V - preserves signal integrity in 500 MHz envelope detectors
Lead-free & halogen-free	Meets RoHS 3 and JEDEC J-STD-020 Level 1 - supports green manufacturing and reflow compatibility

Applications

USB Data Line Protection

RF Signal Detector

Use Scenario: Clamping ESD transients on USB 2.0 D+/D− lines before entering PHY IC.

IC Role / Device Role: Low-capacitance bidirectional transient suppressor acting as voltage-limited shunt.

Use Value: 4–15 pF capacitance avoids signal rise-time degradation; 45 V VRM withstands ±15 kV contact discharge per IEC 61000-4-2.

Use Scenario: Demodulating AM envelope in 2.4 GHz ISM-band receiver front-end.

IC Role / Device Role: Zero-bias RF detector diode converting RF amplitude to baseband DC voltage.

Use Value: Low VF and sub-15 pF CT enable >–20 dBm sensitivity at 2.4 GHz with minimal harmonic distortion.

Low-Voltage Logic Clamp

Power Supply OR'ing

Use Scenario: Preventing back-drive of 1.8 V GPIO pins during hot-plug insertion of 3.3 V peripherals.

IC Role / Device Role: Unidirectional level-shifting clamp limiting pin voltage to V_DD + 0.3 V.

Use Value: 280–580 mV VF ensures clamping occurs below absolute maximum ratings of modern CMOS I/O cells.

Use Scenario: Selecting between two 3.3 V backup supplies in battery-powered IoT node.

IC Role / Device Role: Passive OR'ing diode minimizing voltage drop and heat generation.

Use Value: 580 mV max VF at 100 mA yields only 58 mV dropout-critical for maintaining regulated output under load.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
RB520S-30T2R	Higher VF (370 mV min @ 10 mA), same SOD-523, 30 V VRM	Limited to ≤24 V systems; less margin for 36 V surge events	Choose when lower cost is prioritized and system VR < 28 V
NSR0230HT1G	Same 45 V VRM, but SOD-323 package (1.7 × 1.25 mm), 390 mV VF @ 10 mA	Larger footprint; incompatible with ultra-dense 0201 layouts	Choose when higher current (200 mA IO) required and board space allows

Compared with RB520S-30T2R and NSR0230HT1G, SDM10U45-7 uniquely balances 45 V rating, ultra-compact SOD523 size, and sub-600 mV VF at full rated current-making it optimal for miniaturized, multi-rail portable designs where voltage margin and layout density are both critical.

Availability

SDM10U45-7 is available at Aetrix Electronics and suitable for USB interface protection, RF detector circuits, low-voltage logic clamping, and power OR'ing applications requiring stable component supply and consistent parametric performance across production lots.

Supply support for SDM10U45-7 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 industrial, computing, and consumer markets.

SDM10U45-7 belongs to Diodes' precision Schottky diode product line, engineered for low-voltage, high-frequency signal conditioning in space-constrained portable and wireless devices.

FAQ

Is SDM10U45-7 suitable for automotive applications?

No-SDM10U45-7 is not AEC-Q200 qualified. While it operates from –40 °C to +125 °C and meets RoHS/Green requirements, Diodes explicitly states that automotive-grade variants require separate qualification (PPAP, IATF 16949 manufacturing) and must be requested directly. This part is intended for industrial and commercial use.

What is the meaning of "-7" suffix in SDM10U45-7?

The "-7" denotes tape-and-reel packaging: 3,000 units per reel in SOD523 carrier tape, with parts dispensed in every other cavity (i.e., 1,500 functional positions per reel). It does not indicate temperature grade, revision, or electrical variant-only the standard shipping format per Diodes' ordering guide.

Can SDM10U45-7 replace a 1N5711 in RF detector circuits?

Yes-SDM10U45-7 offers lower capacitance (4–15 pF vs. ~2 pF for 1N5711) and comparable VF, but its SOD523 package lacks the axial leads of 1N5711. For PCB-based RF detectors, SDM10U45-7 provides superior high-frequency response and automated assembly compatibility, though layout must accommodate its 0201-equivalent footprint and thermal pad constraints.

Does SDM10U45-7 have a specified reverse recovery time (t_rr)?

No-Schottky diodes like SDM10U45-7 are majority-carrier devices with no minority-carrier storage; therefore, t_rr is not defined or specified. Its switching is limited only by junction capacitance and series resistance, enabling operation beyond 1 GHz in detector applications, as confirmed by its 1 MHz CT measurement and typical RF performance curves in the datasheet.

SDM10U45-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SC-79, SOD-523

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 40 V

Current - Average Rectified (Io):: 100mA

Voltage - Forward (Vf) (Max) @ If:: 800 mV @ 100 mA

Speed:: Small Signal =< 200mA (Io), Any Speed

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 1 µA @ 25 V

Capacitance @ Vr, F:: 15pF @ 10V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-523

Operating Temperature - Junction:: -40°C ~ 125°C

SDM10U45-7 FAQ

1.How can I place an order for SDM10U45-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for SDM10U45-7 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 SDM10U45-7 reliable?

The price and inventory of SDM10U45-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDM10U45-7 is usually 5 days.

3.What payment methods are accepted for SDM10U45-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDM10U45-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SDM10U45-7?

SDM10U45-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SDM10U45-7 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 SDM10U45-7?

For technical support, including SDM10U45-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDM10U45-7 requirements.

6.How does Aetrix verify that SDM10U45-7 is sourced from the original manufacturer or authorized distributors?

All SDM10U45-7 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 SDM10U45-7 meets industry standards.

7.What is the process for return or replacement of SDM10U45-7?

All SDM10U45-7 units undergo pre-shipment inspection (PSI). If there is an issue with SDM10U45-7, 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 SDM10U45-7 part is unused and in its original packaging.

Return procedure for SDM10U45-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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