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Diodes Incorporated SDM10K45-7-F
- Part No.:
- SDM10K45-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SDM10K45-7-F.pdf
- Description:
- DIODE SCHOTTKY 45V 100MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:35,496
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Product details
Overview
SDM10K45-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode rated for 45 V peak repetitive reverse voltage, 100 mA forward continuous current, and 250 mW power dissipation in SOD323 package. It delivers low 370–450 mV forward voltage at 10 mA and ultra-low 0.07–1.0 μA reverse leakage at 10–45 V, enabling efficient DC-DC converter output rectification and USB power path protection.
For engineers reviewing the SDM10K45-7-F datasheet, SDM10K45-7-F pinout, SDM10K45-7-F application, or SDM10K45-7-F equivalent, key selection criteria include its 6.0 pF junction capacitance at 10 V, thermal resistance of 500 °C/W (junction-to-ambient), JEDEC-qualified reliability, and AEC-Q-compliant automotive-grade variant availability.
Technical Context
This Schottky diode operates with majority-carrier conduction to eliminate minority-carrier storage delay, achieving fast switching speed without reverse recovery time. Its low VF and low IR support high-efficiency operation in low-voltage, low-current power management circuits.
The device uses a planar epitaxial structure on N-type silicon with a metal-semiconductor junction optimized for stable performance across –40 °C to +150 °C ambient temperature range and exhibits predictable derating behavior per Figure 3 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum allowable repetitive reverse voltage before breakdown; sets upper limit for blocking capability in buck converter freewheeling paths. |
| IFM | 100 mA - Continuous forward current rating; defines maximum steady-state load current in low-power supply rails. |
| VF @ 10 mA | 370–450 mV - Forward voltage drop determining conduction loss and self-heating in compact battery-powered designs. |
| IR @ 10 V | 0.07–1.0 μA - Reverse leakage current affecting standby power consumption in always-on circuits. |
| CT @ 10 V | 6.0 pF - Junction capacitance influencing high-frequency switching noise and EMI in 1–10 MHz DC-DC feedback loops. |
| RθJA | 500 °C/W - Thermal resistance from junction to ambient on standard FR-4 PCB; determines temperature rise under 250 mW dissipation. |
| TJ Range | –40 to +150 °C - Operating junction temperature range supporting industrial and automotive under-hood applications. |
Pinout & Package
Package: SOD323 - ultra-small surface-mount plastic package (1.30 × 1.70 × 0.90 mm) with matte tin-plated terminals, moisture sensitivity level 1, and cathode band polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., ground or switch node) in reverse-biased blocking configuration. |
| Cathode | Forward current exit point / polarity reference | Marked by cathode band; connects to higher-potential rail (e.g., output of buck converter or USB VBUS). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low forward voltage | 370–450 mV at 10 mA enables >95% efficiency in 3.3 V/5 V output converters with minimal thermal rise. |
| No reverse recovery charge | Majority-carrier conduction eliminates Qrr-related switching losses and EMI spikes in high-frequency SMPS. |
| SOD323 footprint | 1.30 × 1.70 mm outline supports miniaturized PCB layouts in space-constrained wearables and IoT sensors. |
| JEDEC-qualified reliability | Qualified to high-reliability standards referenced in AEC-Q series, suitable for long-life industrial control modules. |
Applications
| USB Power Switching | Low-Voltage DC-DC Output Rectification |
|---|---|
Use Scenario: Bidirectional power path control between USB host and peripheral in portable devices. IC Role / Device Role / Timing Role: Schottky diode used as OR-ing element to prevent backfeed while minimizing voltage drop. Use Value: 370–450 mV VF ensures ≥4.6 V delivery to downstream circuitry from 5 V USB source, preserving system margin. |
Use Scenario: Synchronous rectifier replacement in 1–3 W buck converters powering microcontrollers or sensors. IC Role / Device Role / Timing Role: Freewheeling diode providing current continuity during high-side FET off-time. Use Value: 6.0 pF CT minimizes ringing and EMI at 1–2 MHz switching frequencies without requiring snubbers. |
| Automotive Body Control Module (BCM) Clamping | IoT Sensor Node Battery Protection |
Use Scenario: Transient voltage clamping on 12 V supply lines in non-safety-critical BCM subcircuits. IC Role / Device Role / Timing Role: Reverse-biased protection diode absorbing load-dump energy spikes up to 45 V. Use Value: 45 V VRRM withstands ISO 7637-2 Pulse 1/2a transients; 1.0 A IFSM handles short-duration surges. |
Use Scenario: Reverse polarity protection for coin-cell or Li-ion battery inputs in wireless sensor nodes. IC Role / Device Role / Timing Role: Series-connected anode-to-battery cathode to block reverse current during insertion errors. Use Value: 0.07 μA typical IR at 3 V preserves multi-year shelf life in ultra-low-quiescent systems. |
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 | 30 V VRRM, 200 mA IFM, 450 mV VF @ 10 mA, same SOD323 package | Limited to ≤30 V systems; higher current rating suits higher-load sensor hubs | Select when 30 V blocking suffices and 200 mA headroom is required for transient peaks |
| NSR0230HT1G | 30 V VRRM, 200 mA IFM, 410 mV VF @ 10 mA, SOD-323 package (identical footprint) | Lower VF improves efficiency in 3.3 V rails but reduced voltage margin vs. 45 V transients | Prefer for cost-sensitive consumer IoT where 30 V surge immunity is adequate |
Compared with RB520S-30T2R and NSR0230HT1G, SDM10K45-7-F provides superior 45 V transient robustness for automotive and industrial 12 V/24 V domains while maintaining identical SOD323 layout compatibility and ultra-low leakage critical for battery longevity.
Availability
SDM10K45-7-F is available at Aetrix Electronics and suitable for USB power management, low-voltage DC-DC output rectification, and automotive body control module clamping requiring stable component supply and consistent SOD323 packaging.
Supply support for SDM10K45-7-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-performance, high-reliability components for power management, signal integrity, and protection applications.
The SDM10K45-7-F belongs to Diodes' general-purpose Schottky diode product line, engineered for efficiency-critical, space-constrained power conversion and protection in industrial, computing, and automotive subsystems.
FAQ
Is SDM10K45-7-F suitable for automotive applications?
Yes - while SDM10K45-7-F itself is not AEC-Q qualified, Diodes offers automotive-grade variants (e.g., SDM10K45Q-7-F with Q-suffix) manufactured in IATF 16949 certified facilities and qualified to AEC-Q101. The base part meets JEDEC high-reliability standards and shares identical electrical and mechanical characteristics.
What is the maximum PCB temperature rise at rated current?
At 100 mA DC forward current and 250 mW power dissipation on a standard 1×1 cm 2 oz FR-4 board, the junction-to-ambient thermal resistance of 500 °C/W results in approximately 125 °C temperature rise above ambient - requiring derating per Figure 3 to maintain TJ ≤ 150 °C.
Does SDM10K45-7-F have a specified reverse recovery time (trr)?
No - as a Schottky barrier diode, SDM10K45-7-F operates via majority-carrier conduction and has no minority-carrier storage charge; therefore, trr is not defined or measured. This eliminates reverse recovery losses and associated EMI in high-frequency switching applications.
Can SDM10K45-7-F replace a 1N5817 in existing designs?
No - the 1N5817 is a DO-41 through-hole Schottky diode rated for 1 A IF and 20 V VRRM. SDM10K45-7-F is an SOD323 surface-mount device with 100 mA IF and 45 V VRRM. Direct replacement requires PCB redesign for footprint, current derating, and thermal management differences.
SDM10K45-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 100mA
- Voltage - Forward (Vf) (Max) @ If:
- 450 mV @ 10 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 10 V
- Capacitance @ Vr, F:
- 6pF @ 10V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- -40°C ~ 150°C
SDM10K45-7-F FAQ
1.How can I place an order for SDM10K45-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SDM10K45-7-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 SDM10K45-7-F reliable?
The price and inventory of SDM10K45-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDM10K45-7-F is usually 5 days.
3.What payment methods are accepted for SDM10K45-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDM10K45-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDM10K45-7-F?
SDM10K45-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDM10K45-7-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 SDM10K45-7-F?
For technical support, including SDM10K45-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDM10K45-7-F requirements.
6.How does Aetrix verify that SDM10K45-7-F is sourced from the original manufacturer or authorized distributors?
All SDM10K45-7-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 SDM10K45-7-F meets industry standards.
7.What is the process for return or replacement of SDM10K45-7-F?
All SDM10K45-7-F units undergo pre-shipment inspection (PSI). If there is an issue with SDM10K45-7-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 SDM10K45-7-F part is unused and in its original packaging.
Return procedure for SDM10K45-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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