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Diodes Incorporated SD103BWS-7-F
- Part No.:
- SD103BWS-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SD103BWS-7-F.pdf
- Description:
- DIODE SCHOTTKY 30V 350MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,768
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Product details
Overview
SD103BWS-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode rated for 30 V peak repetitive reverse voltage, 350 mA forward current, and 0.37 V max forward voltage at 20 mA. It features negligible reverse-recovery time (6 ns), 5.0 µA max reverse leakage at 20 V, and is qualified to AEC-Q automotive reliability standards. It serves as polarity protection or recirculating diode in compact DC power rails.
For engineers reviewing the SD103BWS-7-F datasheet, SD103BWS-7-F pinout, SD103BWS-7-F application, or SD103BWS-7-F equivalent, key selection criteria include its 30 V VRWM rating, ultra-low VF for efficiency-critical 5–24 V systems, SOD323 footprint constraints, and automotive-grade transient robustness with guard ring construction.
Technical Context
This Schottky diode uses a planar silicon structure with guard ring termination to suppress edge breakdown and improve surge tolerance. Its low junction capacitance (35 pF at 0 V) and sub-6 ns reverse recovery support high-frequency switching in DC/DC converters and load-switching circuits.
The device operates across –65 °C to +125 °C and delivers stable forward conduction with minimal thermal drift-VF increases only ~0.5 mV/°C-enabling reliable performance in under-hood automotive modules and industrial power supplies where ambient temperature swings exceed 100 K.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 30 V - Maximum continuous reverse bias before significant leakage; sets safe operating margin for 24 V nominal systems. |
| IFM | 350 mA - Continuous forward current handling; supports moderate-power load switching without heatsinking. |
| VF @ 20 mA | 0.37 V max - Low conduction loss reduces I²R heating in battery-powered or thermally constrained PCBs. |
| tRR | 6 ns - Near-zero reverse recovery enables clean switching in >1 MHz DC/DC topologies without snubbers. |
| IR @ VR | 5.0 µA @ 20 V - Low leakage preserves standby power in always-on subsystems like CAN wake-up receivers. |
| CT @ 0 V | 35 pF - Minimal junction capacitance avoids signal distortion in high-speed data line clamping applications. |
| RθJA | 625 °C/W - Thermal resistance reflects SOD323's limited copper pad coupling; requires careful layout for >200 mW dissipation. |
Pinout & Package
Package: SOD323 - ultra-small plastic surface-mount package (1.30 mm × 1.70 mm × 0.90 mm), cathode-banded, matte tin-plated leads, JEDEC-compliant moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to higher-potential side of protected circuit; must withstand 1.5 A non-repetitive surge during inductive turn-off. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to system ground or lower rail; reverse voltage applied here during polarity reversal events. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring construction | Suppresses edge breakdown under transient overvoltage, enabling AEC-Q-compliant surge immunity without external TVS. |
| Negligible reverse-recovery time | 6 ns tRR eliminates switching losses and EMI in high-frequency buck controllers and OR-ing circuits. |
| Ultra-small SOD323 footprint | 1.3 mm × 1.7 mm area saves >60% board space vs. SOD123; ideal for space-constrained USB-C PD adapters and sensor nodes. |
| Automotive qualification | AEC-Q200 stress-tested for vibration, thermal cycling, and humidity; suitable for body control modules and ADAS power domains. |
| Halogen- and antimony-free "Green" | Meets <900 ppm Br/Cl and <1000 ppm Sb limits; supports EU ELV and China RoHS compliance for Tier 1 automotive supply chains. |
Applications
| Automotive Body Control Module | USB-C Power Delivery Adapter |
|---|---|
Use Scenario: Reverse polarity protection on 12 V input rail feeding microcontroller and CAN transceiver. IC Role / Device Role / Timing Role: Polarity protection diode placed upstream of LDO regulators and communication ICs. Use Value: Prevents catastrophic damage from accidental battery misconnection while adding <0.4 V dropout at 300 mA. | Use Scenario: Output OR-ing diode in dual-input (AC adapter + power bank) USB-C PD source. IC Role / Device Role / Timing Role: Unidirectional current path selector ensuring seamless source handover without backfeed. Use Value: Enables <100 ns switchover with no reverse recovery ringing, preserving PD negotiation integrity. |
| Industrial Sensor Node | Medical Wearable Charger |
Use Scenario: Recirculating diode across solenoid driver in smart valve actuator PCB. IC Role / Device Role / Timing Role: Freewheeling path for inductive kickback energy during MOSFET turn-off. Use Value: Clamps 40 V spikes within 6 ns, eliminating need for RC snubber and reducing BOM count by one component. | Use Scenario: Input protection diode on Li-ion charging IC powered from variable-output wireless charger. IC Role / Device Role / Timing Role: Reverse-current blocker preventing battery discharge into faulty charger circuitry. Use Value: Maintains <5 µA leakage at 4.5 V, extending standby time beyond 30 days between charges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB330-TB-E3/52 | Higher IFM (3 A), larger DO-214AA package, VF = 0.5 V @ 3 A | Designed for high-current rectification, not ultra-compact polarity protection | Select when surge current >1 A is required and board space permits larger footprint. |
| NSR0330P2T5G | SOD-523 package (smaller), same 30 V VRWM, VF = 0.45 V @ 20 mA | Lower thermal mass; derates faster above 100 °C ambient | Prefer for size-constrained wearables where 0.08 V higher VF is acceptable for 0.3 mm² area reduction. |
Compared with SB330-TB-E3/52 and NSR0330P2T5G, SD103BWS-7-F uniquely balances 30 V rating, 0.37 V low VF, SOD323 size, and AEC-Q qualification-making it optimal for automotive-qualified, space-limited 24 V power rails requiring robust transient immunity.
Availability
SD103BWS-7-F is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery adapters, and industrial sensor nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SD103BWS-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-reliability power management, signal integrity, and protection solutions.
The SD103xWS series belongs to Diodes' automotive-qualified Schottky diode product line, engineered specifically for polarity protection and freewheeling in harsh-environment 12–24 V systems with stringent AEC-Q200 compliance requirements.
FAQ
Is SD103BWS-7-F pin-compatible with SD103AWS-7-F or SD103CWS-7-F?
Yes-SD103BWS-7-F shares identical SOD323 package dimensions, pinout, and cathode marking with SD103AWS-7-F and SD103CWS-7-F. The only differences are electrical ratings: VRWM is 30 V (vs. 40 V and 20 V), and IR is specified at 20 V. Layouts designed for any variant are mechanically interchangeable.
What is the maximum allowable junction temperature during continuous operation?
The absolute maximum junction temperature is +125 °C. At TA = +85 °C, the device can dissipate up to 80 mW continuously (per Fig. 4 derating curve). With 200 mW max PD at 25 °C ambient and RθJA = 625 °C/W, sustained operation above 85 °C ambient requires thermal relief via enlarged copper pads or forced airflow.
Does SD103BWS-7-F meet AEC-Q200 Grade 1 or Grade 0 requirements?
SD103BWS-7-F is qualified to AEC-Q200 Rev. D, covering Grade 1 (–40 °C to +125 °C) for passive components. It is not rated for Grade 0 (–40 °C to +150 °C). The automotive-qualified version SD103BWSQ-7-F meets the same Grade 1 specification with additional PPAP documentation and lot traceability.
Can this diode be used in high-frequency RF detector applications?
No-while its 35 pF junction capacitance and 6 ns tRR support switching up to ~10 MHz, the device lacks specified RF parameters (e.g., noise figure, cutoff frequency, or S-parameters) and is not characterized for detector linearity or sensitivity. It is intended for power rectification and protection-not RF signal demodulation.
SD103BWS-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):
- 30 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 @ 20 V
- Capacitance @ Vr, F:
- 28pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- -65°C ~ 125°C
SD103BWS-7-F FAQ
1.How can I place an order for SD103BWS-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SD103BWS-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 SD103BWS-7-F reliable?
The price and inventory of SD103BWS-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 SD103BWS-7-F is usually 5 days.
3.What payment methods are accepted for SD103BWS-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD103BWS-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD103BWS-7-F?
SD103BWS-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD103BWS-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 SD103BWS-7-F?
For technical support, including SD103BWS-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD103BWS-7-F requirements.
6.How does Aetrix verify that SD103BWS-7-F is sourced from the original manufacturer or authorized distributors?
All SD103BWS-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 SD103BWS-7-F meets industry standards.
7.What is the process for return or replacement of SD103BWS-7-F?
All SD103BWS-7-F units undergo pre-shipment inspection (PSI). If there is an issue with SD103BWS-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 SD103BWS-7-F part is unused and in its original packaging.
Return procedure for SD103BWS-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD103BWS-7-F Tags
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