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Diodes Incorporated SD103BW-13-F
- Part No.:
- SD103BW-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
SD103BW-13-F.pdf
- Description:
- DIODE SCHOTTKY 30V 0.35A SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:7,376
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Product details
Overview
SD103BW-13-F from Diodes Incorporated is a 30 V, 0.2 A surface-mount Schottky barrier diode in SOD123 package, featuring 0.60 V max forward voltage at 200 mA, 5.0 µA max reverse leakage at 20 V, and 6 ns reverse recovery time. It serves as a low-loss rectifier in DC-DC converters, polarity protection circuits, and low-voltage power supplies.
For engineers reviewing the SD103BW-13-F datasheet, SD103BW-13-F pinout, SD103BW-13-F application, or SD103BW-13-F equivalent, key selection criteria include reverse voltage rating (30 V), forward current capability (0.2 A continuous), thermal resistance (340 °C/W), SOD123 footprint compatibility, and automotive-grade availability options.
Technical Context
This Schottky diode uses guard ring construction to enhance transient robustness and suppress edge breakdown. Its low 0.60 V VF at 200 mA directly reduces conduction loss in high-frequency switching paths.
The device exhibits 28 pF junction capacitance at 0 V and 6 ns reverse recovery time under 10 mA test conditions-enabling efficient operation in SMPS and synchronous rectification topologies up to several hundred kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 24 V rail clamping and reverse polarity protection. |
| IF(AV) | 0.2 A - Average forward rectified current; supports continuous operation in compact 5–12 V DC-DC output stages. |
| VF Max | 0.60 V @ 200 mA - Low conduction loss enables >92% efficiency in 3.3–5 V buck converter outputs. |
| IR Max | 5.0 µA @ 20 V - Minimal leakage preserves battery life in always-on backup rails and low-power IoT nodes. |
| tRR | 6 ns - Fast recovery minimizes switching loss and EMI in 200–500 kHz PWM-controlled power stages. |
| RθJA | 340 °C/W - Thermal resistance on FR-4 board defines derating curve; limits ambient use to ≤125 °C at full load. |
| CT | 28 pF @ 0 V, 1 MHz - Junction capacitance impacts high-frequency noise coupling and snubber design in flyback snubbers. |
Pinout & Package
Package: SOD123 - Surface-mount plastic package with cathode band marking, 0.01 g mass, UL 94V-0 rated molding compound, and matte tin-plated alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side in rectification; requires low-inductance trace routing for high-di/dt stability. |
| Cathode (marked by band) | Forward current exit / reverse blocking terminal | Connected to output/load side; cathode band orientation must match PCB silkscreen for automated assembly verification. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring construction | Suppresses edge avalanche and improves surge immunity during load dump or inductive kick events. |
| 0.60 V VF max at 200 mA | Reduces power dissipation to ≤120 mW in typical 5 V/0.2 A output stage, lowering thermal stress on adjacent components. |
| SOD123 footprint | Enables direct replacement of legacy 1N5817/1N5819 in space-constrained designs without layout revision. |
| Lead-free & RoHS 3 compliant | Meets IPC-J-STD-020 moisture sensitivity Level 1 and supports lead-free reflow profiles up to 260 °C peak. |
Applications
| Low-Voltage Rectification | DC-DC Converter Output Stage |
|---|---|
Use Scenario: Converting 3.3 V or 5 V USB-powered input to regulated logic supply in portable instrumentation. IC Role / Device Role: Primary output rectifier in non-synchronous buck converter. Use Value: 0.60 V VF limits dropout to <2% at 200 mA, preserving regulation margin and minimizing heat generation on PCB. | Use Scenario: Secondary-side rectification in isolated 12 V → 3.3 V flyback power supply for industrial sensors. IC Role / Device Role: Freewheeling diode handling discontinuous conduction mode (DCM) energy transfer. Use Value: 6 ns tRR prevents reverse recovery ringing and reduces EMI filter component count. |
| Inverse Polarity Protection | Automotive Body Control Module |
Use Scenario: Preventing damage from accidental reverse battery connection in 5 V microcontroller power domain. IC Role / Device Role: Series-connected protection diode on main VCC input rail. Use Value: 30 V VRRM withstands load dump transients up to ±25 V while maintaining <0.2 V forward drop at system startup current. | Use Scenario: Power conditioning for LIN bus transceiver and door lock actuator driver in 12 V vehicle subsystem. IC Role / Device Role: Input rectifier and reverse-battery safeguard in auxiliary 5 V LDO pre-regulator stage. Use Value: AEC-Q101 qualification path available; 150 °C TJ rating supports under-hood thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB130-TB-E3/5AT (Vishay) | 30 V VRRM, 1.0 A IF(AV), 0.55 V VF @ 1 A - higher current rating, larger SMC package. | Requires PCB pad redesign; suited for higher-load 12 V systems where thermal margin exceeds 0.2 A. | Select when >0.3 A average current or >1 W dissipation is required; not drop-in for SOD123 layouts. |
| NSR0230HT1G (onsemi) | 30 V VRRM, 0.2 A IF(AV), 0.45 V VF @ 0.1 A - lower VF but only rated at 100 mA, SOD-123 package. | Optimized for ultra-low-power bias rails; derates faster above 100 mA due to thermal limits. | Prefer for always-on 3.3 V standby rails with <100 mA load; verify thermal performance at 200 mA. |
Compared with SB130-TB-E3/5AT and NSR0230HT1G, SD103BW-13-F delivers balanced 0.2 A capability, 30 V rating, and SOD123 compatibility-making it optimal for cost-sensitive, space-constrained 5–12 V embedded power rails where precise 0.2 A derating and JEDEC-standard footprint are critical.
Availability
SD103BW-13-F is available at Aetrix Electronics and suitable for low-voltage rectification, DC-DC converter output stages, inverse polarity protection, and automotive body control modules requiring stable component supply and long-term production continuity.
Supply support for SD103BW-13-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 high-efficiency, low-voltage power conversion in consumer, industrial, and automotive applications where compact size and thermal reliability are essential.
FAQ
What is the maximum junction temperature for SD103BW-13-F?
The SD103BW-13-F has an operating junction temperature range of –55 °C to +150 °C. This rating is validated per the datasheet's thermal characteristics table and applies under specified mounting conditions on FR-4 PCB with recommended pad layout. Exceeding +150 °C risks permanent parametric shift or bond wire failure.
Is SD103BW-13-F qualified for automotive applications?
SD103BW-13-F itself is not AEC-Q101 qualified, but Diodes offers automotive-grade variants (e.g., SD103BWQ-13-F) with PPAP documentation, IATF 16949 manufacturing, and extended temperature validation. Standard SD103BW-13-F may be used in non-safety-critical automotive subsystems pending internal qualification.
How does the SOD123 package affect thermal performance?
The SOD123 package delivers RθJA = 340 °C/W on standard FR-4 board, meaning a 0.2 A load at 0.6 V drop (120 mW) raises junction temperature by ~41 °C above ambient. Performance improves significantly with copper pour or thermal vias-verified in Diodes' recommended pad layout (Document DS11013, page 4).
Can SD103BW-13-F replace SD103AW-13-F in a 40 V circuit?
No. SD103BW-13-F has a 30 V VRRM, making it unsuitable for 40 V circuits where SD103AW-13-F (40 V rating) is specified. Using SD103BW-13-F in such a design risks reverse breakdown during transients or elevated temperature operation, potentially causing catastrophic failure.
SD103BW-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- 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-123
- Operating Temperature - Junction:
- -65°C ~ 125°C
SD103BW-13-F FAQ
1.How can I place an order for SD103BW-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SD103BW-13-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 SD103BW-13-F reliable?
The price and inventory of SD103BW-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD103BW-13-F is usually 5 days.
3.What payment methods are accepted for SD103BW-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD103BW-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD103BW-13-F?
SD103BW-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD103BW-13-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 SD103BW-13-F?
For technical support, including SD103BW-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD103BW-13-F requirements.
6.How does Aetrix verify that SD103BW-13-F is sourced from the original manufacturer or authorized distributors?
All SD103BW-13-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 SD103BW-13-F meets industry standards.
7.What is the process for return or replacement of SD103BW-13-F?
All SD103BW-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SD103BW-13-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 SD103BW-13-F part is unused and in its original packaging.
Return procedure for SD103BW-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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