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Diodes Incorporated SD103AW-7-F
- Part No.:
- SD103AW-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
SD103AW-7-F.pdf
- Description:
- DIODE SCHOTTKY 40V 350MA SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:71,951
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Product details
Overview
SD103AW-7-F from Diodes Incorporated is a 40 V, 0.2 A Schottky barrier diode in SOD123 package, featuring 0.60 V max forward voltage at 200 mA, 5.0 µA reverse leakage at 30 V, and 6 ns reverse recovery time. It serves as a low-loss rectifier in compact DC-DC converters and polarity protection circuits for portable power rails.
For engineers reviewing the SD103AW-7-F datasheet, SD103AW-7-F pinout, SD103AW-7-F application, or SD103AW-7-F equivalent, key selection criteria include its 40 V peak reverse voltage rating, SOD123 thermal resistance (340 °C/W), low VF advantage over silicon diodes, and suitability for space-constrained 12 V/5 V rail rectification.
Technical Context
This Schottky diode uses a planar guard ring structure to suppress edge breakdown and improve transient robustness. Its metal-semiconductor junction enables fast switching (tRR = 6 ns) and low conduction loss without minority-carrier storage delay.
The device operates across –55 °C to +150 °C with 367 mW power dissipation on FR-4 board, and exhibits 28 pF junction capacitance at 0 V bias-critical for high-frequency rectifier stability in buck converter freewheeling paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking capability for 12 V input systems with margin |
| IF(AV) | 0.2 A - Continuous rectified current rating for low-power auxiliary rails |
| VF Max | 0.60 V @ 200 mA - Reduces conduction loss by ~40% vs. comparable silicon diodes |
| IR Max | 5.0 µA @ 30 V - Enables low standby power in battery-backed circuits |
| tRR | 6 ns - Supports switching frequencies up to 5 MHz without tail current penalty |
| RθJA | 340 °C/W - Requires minimal PCB copper area for thermal management |
| CT | 28 pF @ 0 V - Limits high-frequency noise coupling in SMPS feedback loops |
Pinout & Package
Package: SOD123 - Surface-mount plastic case (1.55 mm × 2.65 mm × 1.05 mm), cathode-banded, matte tin-plated leadframe, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output rail; polarity marking prevents assembly error |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | 0.60 V max at 200 mA reduces power loss and thermal stress in 5 V/3.3 V supplies |
| Guard ring construction | Enhances surge immunity and improves long-term reliability under repetitive voltage transients |
| SOD123 footprint compatibility | Enables direct replacement of legacy 0.2 A Schottkys without PCB redesign |
| Halogen- and antimony-free "Green" design | Meets IPC-1752A material declaration requirements for RoHS 3 and automotive PPAP |
Applications
| USB Power Delivery Protection | IoT Sensor Node Rectification |
|---|---|
Use Scenario: Reverse polarity protection on 5 V USB-C input rails for embedded gateways. IC Role / Device Role / Timing Role: Unidirectional current valve preventing damage during plug-in misorientation. Use Value: 0.60 V VF minimizes voltage drop across protection path, preserving >4.7 V at load under 200 mA. | Use Scenario: Input rectification for coin-cell–powered environmental sensors with intermittent wake-up. IC Role / Device Role / Timing Role: Low-leakage AC-to-DC conversion for energy harvesting harvesters. Use Value: 5.0 µA IR at 30 V ensures <1 µW standby loss-extending 10-year battery life targets. |
| Industrial PLC Auxiliary Supply | Automotive Body Control Module |
Use Scenario: 24 V-to-12 V buck converter freewheeling diode in programmable logic controller power stages. IC Role / Device Role / Timing Role: High-speed synchronous rectifier alternative in cost-sensitive non-isolated DC-DC. Use Value: 6 ns tRR eliminates switching node ringing, reducing EMI filter component count. | Use Scenario: Reverse battery connection protection in 12 V lighting control modules. IC Role / Device Role / Timing Role: Fail-safe blocking element during jump-start or service disconnect events. Use Value: 40 V VRRM withstands load dump transients up to ISO 7637-2 Pulse 1 (−150 V clamped). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB120-E3/54 (Vishay) | Same SOD123 package; 20 V VRRM, 0.55 V VF @ 200 mA, 100 µA IR @ 16 V | Limited to ≤12 V systems; higher leakage reduces battery hold-up time | Select only when 40 V blocking is unnecessary and lower VF is prioritized over leakage |
| NSR0240HT1G (onsemi) | Same 40 V rating; 0.55 V VF @ 200 mA, 10 µA IR @ 30 V, 10 ns tRR | Slower recovery increases switching loss above 2 MHz; slightly higher leakage | Prefer for cost-sensitive designs where 6 ns speed is not critical and RoHS compliance is verified |
Compared with SB120-E3/54 and NSR0240HT1G, SD103AW-7-F delivers superior leakage performance (5 µA vs. ≥10 µA) and fastest recovery (6 ns), making it optimal for battery-critical and high-frequency DC-DC applications where efficiency and transient response are prioritized.
Availability
SD103AW-7-F is available at Aetrix Electronics and suitable for USB PD protection, IoT sensor node rectification, and industrial PLC auxiliary supply requiring stable component supply and full traceability.
Supply support for SD103AW-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, manufacturing, and sales operations across Asia, Europe, and North America.
The SD103x series belongs to Diodes' general-purpose Schottky rectifier product line, engineered for cost-effective, high-efficiency low-voltage rectification in consumer, industrial, and automotive subsystems.
FAQ
What is the maximum junction temperature for continuous operation?
The SD103AW-7-F supports continuous operation from –55 °C to +150 °C junction temperature. At ambient temperatures above 75 °C, derating is required per Figure 4 in the datasheet: average rectified current drops linearly from 0.2 A at 25 °C to 0 A at 150 °C on standard FR-4 board.
Is this diode suitable for automotive applications?
SD103AW-7-F is not AEC-Q200 qualified. While it meets industrial temperature range (–55 °C to +150 °C) and RoHS/Green requirements, Diodes Incorporated explicitly states that automotive-grade versions require separate qualification-contact their representative for PPAP-capable AEC-Q101 variants.
How does the guard ring construction improve reliability?
The guard ring mitigates electric field crowding at the semiconductor edge, raising the effective breakdown voltage and suppressing premature avalanche failure under repetitive voltage transients. This extends operational lifetime in applications exposed to load dump or inductive kickback events.
Can SD103AW-7-F replace SD103BW-7-F or SD103CW-7-F in existing designs?
Yes-pin-compatible and identical in package, thermal, and forward characteristics-but only if the 40 V VRRM rating meets system requirements. Substituting into a 20 V or 30 V design is safe; substituting a lower-VRRM part into a 40 V circuit risks catastrophic failure under reverse bias.
SD103AW-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 350mA
- Voltage - Forward (Vf) (Max) @ If:
- 600 mV @ 200 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 10 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 30 V
- Capacitance @ Vr, F:
- 28pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
- Operating Temperature - Junction:
- -65°C ~ 125°C
SD103AW-7-F FAQ
1.How can I place an order for SD103AW-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SD103AW-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 SD103AW-7-F reliable?
The price and inventory of SD103AW-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 SD103AW-7-F is usually 5 days.
3.What payment methods are accepted for SD103AW-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD103AW-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD103AW-7-F?
SD103AW-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD103AW-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 SD103AW-7-F?
For technical support, including SD103AW-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD103AW-7-F requirements.
6.How does Aetrix verify that SD103AW-7-F is sourced from the original manufacturer or authorized distributors?
All SD103AW-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 SD103AW-7-F meets industry standards.
7.What is the process for return or replacement of SD103AW-7-F?
All SD103AW-7-F units undergo pre-shipment inspection (PSI). If there is an issue with SD103AW-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 SD103AW-7-F part is unused and in its original packaging.
Return procedure for SD103AW-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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