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Diodes Incorporated SDM10K45-7
- Part No.:
- SDM10K45-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SDM10K45-7.pdf
- Description:
- DIODE SCHOTTKY 45V 100MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,091
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Product details
Overview
SDM10K45-7 from Diodes Incorporated is a surface-mount Schottky barrier diode in SOD-323 package, rated for 45 V peak reverse voltage and 100 mA continuous forward current, with 370–450 mV forward voltage at 10 mA and 0.07–1.0 µA reverse leakage at 10 V. It serves as a low-loss rectifier or polarity protection device in space-constrained DC/DC converter feedback paths and USB port protection circuits.
For engineers reviewing the SDM10K45-7 datasheet, SDM10K45-7 pinout, SDM10K45-7 application, or SDM10K45-7 equivalent, key selection criteria include its ultra-low VF for efficiency-critical 3.3 V/5 V rail clamping, 6.0 pF junction capacitance for high-frequency switching integrity, thermal resistance of 500 °C/W on standard FR-5 layout, and SOD-323 footprint compatibility with automated placement.
Technical Context
This Schottky diode leverages a planar epitaxial structure to achieve fast recovery (no stored charge) and minimal forward conduction loss. Its 45 V VRRM rating targets low-voltage logic-level and interface rail protection, not power conversion primary side use.
The device operates across –40 °C to +125 °C with stable VF drift and sub-µA IR up to 10 V reverse bias, enabling reliable operation in battery-powered sensor nodes and industrial I/O modules where ambient temperature swings exceed 80 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for clamp or flyback protection in ≤5 V systems. |
| IF(AV) | 100 mA - Average forward current under thermal-limited PCB layout; supports continuous signal-level rectification in always-on monitoring circuits. |
| VF @ 10 mA | 370–450 mV - Low forward drop minimizes power loss and self-heating in low-current bias networks and level-shifting paths. |
| IR @ 10 V | 0.07–1.0 µA - Ultra-low leakage preserves battery life in standby mode and avoids false triggering in high-impedance sensing inputs. |
| CT @ 10 V | 6.0 pF - Small junction capacitance maintains signal edge integrity above 100 MHz in RF detector or high-speed data line clamping. |
| RJA | 500 °C/W - Thermal resistance on standard FR-5 pad layout; requires no thermal relief for 100 mA operation at TA ≤ 85 °C. |
Pinout & Package
Package: SOD-323 - ultra-compact 2-pin surface-mount plastic case (2.3–2.7 mm × 1.6–1.8 mm), UL 94V-0 rated, moisture sensitivity Level 1, cathode marked by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to higher-potential node (e.g., input rail or signal source); must be routed with minimal trace inductance for transient suppression. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; tied to reference (GND or lower rail); defines clamping threshold when used in TVS-like configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low forward voltage | 370–450 mV at 10 mA enables ≥95% efficiency in 3.3 V supply path rectification without active regulation. |
| SOD-323 footprint | 2.5 mm² board area saves space in wearables and miniaturized IoT edge nodes where PCB real estate is constrained to <10 mm² per function. |
| Lead-free/RoHS compliant | Matte tin finish over Alloy 42 leadframe meets IPC-J-STD-020C reflow profiles and eliminates post-solder cleaning for high-reliability medical assemblies. |
| Low junction capacitance | 6.0 pF at 10 V allows use in 2.4 GHz ISM band receiver front-end ESD protection without degrading antenna matching. |
Applications
| USB Port Polarity Protection | DC/DC Converter Feedback Clamp |
|---|---|
Use Scenario: Preventing damage from reversed USB cable insertion in portable chargers and peripheral hubs. IC Role / Device Role: Unidirectional current gate placed between VBUS and downstream load ICs. Use Value: 370 mV VF limits voltage drop to <1% of 5 V nominal, preserving USB 2.0 signaling margin while blocking reverse current. | Use Scenario: Clamping feedback node voltage during light-load transient events in buck converters using optocoupler-based isolation. IC Role / Device Role: Fast-acting voltage limiter protecting TL431 or error amplifier input pins. Use Value: Sub-µA IR at 2.5 V ensures no loading of high-impedance feedback divider, maintaining ±1% output regulation accuracy. |
| Low-Power Sensor Bias Supply | Industrial Digital Input Protection |
Use Scenario: Providing isolated bias to MEMS pressure sensors in battery-operated environmental monitors. IC Role / Device Role: Reverse-polarity guard in linear regulator input path. Use Value: 0.07 µA max IR at 3.3 V extends 200 mAh coin cell life beyond 10 years in sleep-mode dominant operation. | Use Scenario: Protecting PLC digital input channels from field-wiring faults and induced transients in factory automation cabinets. IC Role / Device Role: First-stage clamp ahead of series current-limiting resistor and optocoupler. Use Value: 45 V VRRM withstands common-mode surges up to ±30 V without conduction, reducing false trigger rate in 24 V DC input modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAT54C-7-F | Same SOD-323 package; 30 V VRRM, 240–370 mV VF @ 10 mA, 2 µA IR @ 10 V | Limited to ≤3.3 V systems; higher leakage reduces battery life in always-on nodes | Select only if system reverse voltage never exceeds 30 V and cost is prioritized over leakage. |
| NSR0230HT1G | SOD-123 package; 30 V VRRM, 270–410 mV VF @ 10 mA, 0.1 µA IR @ 10 V | Larger footprint (3.5 mm²); incompatible with fine-pitch SOD-323 land patterns | Choose when board layout allows SOD-123 and tighter IR spec is required for long-duration sleep modes. |
Compared with BAT54C-7-F and NSR0230HT1G, SDM10K45-7 uniquely balances 45 V robustness, sub-µA leakage, and SOD-323 size-making it optimal for 5 V industrial interfaces where both overvoltage margin and battery runtime matter.
Availability
SDM10K45-7 is available at Aetrix Electronics and suitable for USB power delivery protection, DC/DC feedback clamping, and low-power sensor biasing requiring stable component supply across multi-year production cycles.
Supply support for SDM10K45-7 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 and signal integrity solutions for industrial, computing, and consumer markets.
The SDM series targets ultra-compact, low-leakage Schottky rectifiers for space- and power-sensitive applications such as portable instrumentation and smart sensor nodes.
FAQ
Is SDM10K45-7 suitable for reverse polarity protection in a 5 V automotive body control module?
Yes - its 45 V VRRM exceeds typical 12 V automotive load-dump spikes (up to 40 V), and 0.07 µA max IR at 5 V prevents measurable battery drain. However, verify ambient temperature derating: at 105 °C ambient, IF is limited to ~65 mA per Fig. 1, sufficient for most BCM microcontroller I/O protection paths.
Does SDM10K45-7 have a specified reverse recovery time (trr)?
No - as a Schottky barrier diode, it has no minority-carrier storage and therefore no defined trr. Its switching is limited only by junction capacitance (6.0 pF) and package inductance, enabling clean turn-off in >100 MHz signal path clamping without ringing or snap-off overshoot.
Can SDM10K45-7 replace a 1N4148 in high-speed digital logic clamping?
No - while faster than 1N4148 in reverse recovery, SDM10K45-7's 45 V VRRM and Schottky construction make it unsuitable for 75 V+ logic rail clamping. Use only where reverse voltage stays below 45 V and forward current remains ≤100 mA; for general-purpose logic clamping, select a 100 V-rated small-signal diode.
What is the maximum allowable soldering temperature profile for SDM10K45-7?
Per J-STD-020C Level 1, peak reflow temperature is 260 °C for ≤10 seconds. The device uses matte tin plating over Alloy 42 and passes IPC-A-610 Class 2 visual acceptance; avoid prolonged exposure above 240 °C to prevent intermetallic growth that increases VF drift over time.
SDM10K45-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 FAQ
1.How can I place an order for SDM10K45-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SDM10K45-7 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 SDM10K45-7 reliable?
The price and inventory of SDM10K45-7 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 is usually 5 days.
3.What payment methods are accepted for SDM10K45-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDM10K45-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDM10K45-7?
SDM10K45-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDM10K45-7 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 SDM10K45-7?
For technical support, including SDM10K45-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDM10K45-7 requirements.
6.How does Aetrix verify that SDM10K45-7 is sourced from the original manufacturer or authorized distributors?
All SDM10K45-7 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 SDM10K45-7 meets industry standards.
7.What is the process for return or replacement of SDM10K45-7?
All SDM10K45-7 units undergo pre-shipment inspection (PSI). If there is an issue with SDM10K45-7, 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 SDM10K45-7 part is unused and in its original packaging.
Return procedure for SDM10K45-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDM10K45-7 Tags
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