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Diodes Incorporated SDM10U45LP-7
- Part No.:
- SDM10U45LP-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
SDM10U45LP-7.pdf
- Description:
- DIODE SCHOTTKY 40V 100MA 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:48,326
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Product details
Overview
SDM10U45LP-7 from Diodes Incorporated is a surface-mount Schottky barrier diode rated for 45 V peak reverse voltage, 100 mA average forward current, and 250 mW power dissipation in an X1-DFN1006-2 package; it delivers low forward voltage (280–580 mV across 1–100 mA) and low capacitance (7–15 pF at 10 V), enabling efficient high-frequency rectification in space-constrained DC-DC converters.
For engineers reviewing the SDM10U45LP-7 datasheet, SDM10U45LP-7 pinout, SDM10U45LP-7 application, or SDM10U45LP-7 equivalent, key selection criteria include verified cathode-marked DFN1006 footprint compatibility, AEC-Q101 qualification for automotive ambient reliability, and measured reverse leakage ≤1.0 µA at 25 V - critical for low-power sensor biasing and ESD-protected signal clamping.
Technical Context
This Schottky diode employs guard ring die construction to suppress transient-induced junction breakdown and sustain reliable operation under repetitive surge conditions (IFSM = 1 A, t ≤ 10 ms). Its NiPdAu-plated copper leadframe ensures solderability per MIL-STD-202 Method 208 and supports reflow profiles compliant with J-STD-020 Level 1 moisture sensitivity.
The device operates across –40°C to +125°C with thermal resistance RθJA = 400°C/W, and its capacitance-voltage profile (7–15 pF over 0–40 V reverse bias) is optimized for RF detector and high-speed switching applications where minimal charge storage is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Reverse Voltage | 45 V - defines maximum transient voltage the diode blocks without avalanche conduction |
| Average Forward Current | 100 mA - continuous DC current rating under natural convection at TA = 25°C |
| Forward Voltage @ 100 mA | 550–800 mV - directly impacts conduction loss and thermal rise in low-voltage power rails |
| Reverse Leakage @ 25 V | ≤1.0 µA - ensures minimal standby current in battery-powered sensor circuits |
| Total Capacitance @ 10 V | 7–15 pF - enables <1 ns recovery time for RF envelope detection and high-frequency clamping |
| Thermal Resistance θJA | 400°C/W - determines junction temperature rise above ambient in unmounted PCB layout |
| Operating Temperature | –40°C to +125°C - validated for under-hood automotive modules and industrial control enclosures |
Pinout & Package
Package: X1-DFN1006-2 - ultra-compact 1.0 mm × 0.6 mm × 0.47 mm molded plastic case with exposed thermal pad (non-electrical), UL 94V-0 rated, halogen/antimony-free "Green" compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry terminal | Connected to lower-potential side of load; requires PCB copper pour for thermal relief |
| Cathode | Forward current exit / reverse blocking terminal | Marked by bar or dot on top surface; ties to system ground or higher-potential rail |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge breakdown during voltage transients, improving surge survivability in automotive load-dump environments |
| Low VF at 1 mA | 280 mV - enables accurate low-current biasing of precision analog sensors without significant voltage drop |
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, TC, and ESD testing per stress test plan |
| NiPdAu terminal finish | Ensures robust solder joint integrity after multiple reflow cycles and long-term intermetallic stability |
| Moisture Sensitivity Level 1 | Zero bake requirement prior to assembly - simplifies SMT line handling and reduces process overhead |
Applications
| Automotive LED Lighting Driver | USB Port ESD Protection |
|---|---|
Use Scenario: Reverse polarity protection and flyback suppression in 12 V LED headlamp modules with PWM dimming. IC Role / Device Role / Timing Role: Schottky freewheeling diode placed across inductive LED driver switch node. Use Value: 550 mV VF at 100 mA minimizes power loss versus silicon diodes, reducing thermal stress in sealed lamp housings. | Use Scenario: Low-capacitance clamping diode on USB 2.0 D+ and D− lines to divert ESD strikes per IEC 61000-4-2 Level 4. IC Role / Device Role / Timing Role: Transient voltage suppressor with fast response (<1 ns) and minimal signal distortion. Use Value: 7–15 pF capacitance preserves USB 2.0 eye diagram integrity while limiting leakage to ≤1 µA at 25 V. |
| Portable Gas Sensor Bias Circuit | Industrial RS-485 Receiver Clamp |
Use Scenario: Precision bias supply for electrochemical CO sensors requiring stable 3.3 V reference with microamp-level quiescent current. IC Role / Device Role / Timing Role: Low-leakage Schottky rectifier in charge-pump-based LDO pre-regulator stage. Use Value: ≤1.0 µA IR at 25 V prevents sensor baseline drift and extends battery life in wireless IoT nodes. | Use Scenario: Common-mode transient clamp on RS-485 receiver inputs in factory automation PLCs exposed to motor drive noise. IC Role / Device Role / Timing Role: Bidirectional protection element tied between differential pair and local ground. Use Value: Guard ring structure withstands 1 A surge pulses (t ≤ 10 ms), preventing latch-up in isolated transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB521S-30T2R | 30 V VR, 200 mA IO, same X1-DFN1006-2 package, VF = 370 mV @ 100 mA | Limited to ≤30 V systems; unsuitable for 40 V automotive load-dump scenarios | Select when lower reverse voltage suffices and tighter VF distribution is needed |
| NSR0230HT1G | 30 V VR, 200 mA IO, SOD-523 package (1.2 × 0.8 mm), VF = 450 mV @ 100 mA | Larger footprint and higher thermal resistance (RθJA = 470°C/W); no AEC-Q101 qualification | Choose only for non-automotive consumer designs where board area permits larger case |
Compared with RB521S-30T2R and NSR0230HT1G, SDM10U45LP-7 uniquely combines 45 V capability, AEC-Q101 compliance, and DFN1006 size - making it the sole option for space-limited, high-reliability 12/24 V automotive subsystems requiring >40 V transient margin.
Availability
SDM10U45LP-7 is available at Aetrix Electronics and suitable for automotive LED lighting drivers, USB port ESD protection circuits, and portable gas sensor bias supplies requiring stable component supply with full traceability and lifecycle management.
Supply support for SDM10U45LP-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
This device belongs to Diodes' AEC-Q101-qualified Schottky diode product line, engineered specifically for automotive infotainment, body electronics, and ADAS subsystems demanding high reliability in harsh thermal and electrical environments.
FAQ
What is the cathode marking method for SDM10U45LP-7?
The cathode is marked on the top surface by either a bar or a dot, both located adjacent to the cathode terminal. This marking aligns with JEDEC standard DFN1006 orientation and is visible before and after reflow soldering. The bottom-side marking "LJ" identifies the product type code and is not used for polarity identification.
Does SDM10U45LP-7 require baking before SMT assembly?
No. SDM10U45LP-7 is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and assembled without preconditioning or baking. This eliminates process steps and avoids thermal stress on the die attach during reflow.
Can SDM10U45LP-7 replace a 1N5819 in existing designs?
No - the 1N5819 uses DO-41 through-hole packaging and has higher VF (≥450 mV at 100 mA) and larger RθJA (~120°C/W). SDM10U45LP-7's DFN1006 footprint, thermal performance, and AEC-Q101 qualification make it incompatible for direct drop-in replacement without PCB redesign and thermal validation.
What is the maximum allowable soldering temperature profile for SDM10U45LP-7?
The device complies with IPC/JEDEC J-STD-020D for lead-free reflow, supporting peak temperatures up to 260°C for ≤30 seconds. Preheat ramp rate must not exceed 3°C/s, and time above 217°C shall be 60–150 seconds. Reflow profiles must avoid thermal shock to the guard ring structure.
SDM10U45LP-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 0402 (1006 Metric)
- 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:
- X1-DFN1006-2
- Operating Temperature - Junction:
- -40°C ~ 125°C
SDM10U45LP-7 FAQ
1.How can I place an order for SDM10U45LP-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SDM10U45LP-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 SDM10U45LP-7 reliable?
The price and inventory of SDM10U45LP-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDM10U45LP-7 is usually 5 days.
3.What payment methods are accepted for SDM10U45LP-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDM10U45LP-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDM10U45LP-7?
SDM10U45LP-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDM10U45LP-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 SDM10U45LP-7?
For technical support, including SDM10U45LP-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDM10U45LP-7 requirements.
6.How does Aetrix verify that SDM10U45LP-7 is sourced from the original manufacturer or authorized distributors?
All SDM10U45LP-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 SDM10U45LP-7 meets industry standards.
7.What is the process for return or replacement of SDM10U45LP-7?
All SDM10U45LP-7 units undergo pre-shipment inspection (PSI). If there is an issue with SDM10U45LP-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 SDM10U45LP-7 part is unused and in its original packaging.
Return procedure for SDM10U45LP-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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