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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Diodes Incorporated SD103BW-7-F

Name: SD103BW-7-F
Brand: Diodes Incorporated
SKU: SD103BW-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SD103BW-7-F

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: SOD-123

Datasheet:: SD103BW-7-F.pdf

Description:: DIODE SCHOTTKY 30V 350MA SOD123

Quantity:: RFQ Add To RFQ list

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Inventory:27,362

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Product details

Overview

SD103BW-7-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-optimized for low-loss rectification in compact DC-DC converters and polarity protection circuits.

For engineers reviewing the SD103BW-7-F datasheet, SD103BW-7-F pinout, SD103BW-7-F application, or SD103BW-7-F equivalent, key selection criteria include its 30 V reverse rating, SOD123 thermal resistance (340 °C/W), cathode-band polarity marking, and suitability for space-constrained 5–12 V power rails requiring fast switching and low conduction loss.

Technical Context

This Schottky diode uses guard ring construction to suppress edge breakdown and improve transient robustness. Its low 0.60 V VF at 200 mA and 28 pF junction capacitance at 0 V enable high-frequency operation with minimal forward conduction loss and capacitive loading.

The device operates across –55 °C to +150 °C and delivers 350 mA continuous forward current under FR-4 board conditions. Its 1.5 A non-repetitive surge rating supports brief inrush events in SMPS input stages without thermal runaway.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	30 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 24 V nominal systems.
I_F	0.2 A - Average rectified output current at +25 °C; derates to zero at +150 °C per Fig 4.
V_F Max	0.60 V @ 200 mA - Low conduction loss enables >92% efficiency in 5 V buck converter freewheel paths.
I_R Max	5.0 µA @ 20 V - Ultra-low leakage preserves battery life in always-on 3.3 V/5 V standby rails.
t_RR	6 ns - Fast recovery minimizes switching loss and EMI in 500 kHz–2 MHz DC-DC topologies.
C_T	28 pF @ 0 V, 1 MHz - Low junction capacitance reduces AC coupling and ringing in high-speed flyback snubbers.

Pinout & Package

Package: SOD123 - Surface-mount plastic case (1.55 mm × 2.65 mm × 1.05 mm), matte tin-plated alloy 42 leadframe, cathode band marked on top surface, 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 synchronous buck); requires thermal pad clearance per Diodes' recommended layout.
Cathode (banded end)	Forward current exit / reverse blocking terminal	Connected to output rail or ground return; cathode band orientation must align with PCB silkscreen for automated assembly verification.

Key Features

Feature	Design Value
Guard ring construction	Suppresses surface leakage and improves voltage standoff consistency across temperature and humidity variations.
0.60 V V_F max @ 200 mA	Reduces power dissipation by ~35% versus comparable 1N5819-level Schottkys in 5 V/0.15 A loads.
SOD123 footprint compatibility	Enables drop-in replacement in legacy designs using 1.55 mm × 2.65 mm land patterns without re-layout.
Lead-free & halogen-free	Meets RoHS 3 (2015/863/EU) and automotive "Green" standards (<900 ppm Br+Cl, <1000 ppm Sb).

Applications

Low-Voltage Rectification

High-Efficiency DC-DC Conversion

Use Scenario: Converting 3.3 V or 5 V USB-powered inputs to regulated logic supply rails in portable instrumentation.

IC Role / Device Role / Timing Role: Freewheeling diode in asynchronous buck converter, conducting during low-side switch off-time.

Use Value: 0.60 V V_F limits dropout to <2% at 0.2 A, preserving headroom for LDO post-regulation.

Use Scenario: Output rectification in 12 V → 3.3 V isolated flyback converters for industrial IoT gateways.

IC Role / Device Role / Timing Role: Secondary-side unidirectional current path with minimal reverse recovery energy loss.

Use Value: 6 ns t_RR and 28 pF C_T reduce switching node ringing and EMI filter burden by >15 dB vs. standard PN diodes.

Inverse Polarity Protection

Switch-Mode Power Supply Input Stage

Use Scenario: Preventing damage from reversed battery insertion in handheld medical sensors.

IC Role / Device Role / Timing Role: Series-blocking diode placed between battery terminal and system input, conducting only during correct polarity.

Use Value: 5.0 µA I_R at 20 V ensures <1 µW standby loss-critical for multi-year coin-cell operation.

Use Scenario: Input rectification in 24 V AC/DC adapters powering PoE injectors.

IC Role / Device Role / Timing Role: Bridge leg component handling 50/60 Hz line-frequency peaks up to 30 V PIV.

Use Value: 30 V V_RRM provides 2× margin over 24 V RMS input, while SOD123 thermal resistance supports 0.35 A surge without derating.

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	30 V V_RRM, 1.0 A I_F, 0.85 V V_F @ 1 A, DO-214AA package	Higher current rating but larger footprint and higher VF at low load	Select when >0.3 A average current required and board space allows DO-214AA.
NSR0230HT1G	30 V V_RRM, 0.2 A I_F, 0.45 V V_F @ 200 mA, SOD-123FL package	Lower VF but tighter 0.85 mm height constraint; no guard ring	Select when ultra-low VF dominates and transient immunity is secondary to size.

Compared with SB130-TB and NSR0230HT1G, SD103BW-7-F uniquely balances 0.2 A capability, 0.60 V VF, guard ring reliability, and industry-standard SOD123 footprint-making it optimal for cost-sensitive, thermally constrained 24 V input systems where consistent low-leakage performance is mandatory.

Availability

SD103BW-7-F is available at Aetrix Electronics and suitable for low-voltage rectification, DC-DC conversion, inverse polarity protection, and SMPS input stage applications requiring stable component supply and full traceability.

Supply support for SD103BW-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 the Americas.

The SD103x series belongs to Diodes' general-purpose Schottky rectifier product line, engineered specifically for space-efficient, high-efficiency power conversion in consumer, industrial, and computing applications where low VF and low IR are critical.

FAQ

What is the maximum junction temperature for SD103BW-7-F?

The SD103BW-7-F has an absolute maximum junction temperature of +150 °C and a storage temperature range of –55 °C to +150 °C. Derating begins at +25 °C ambient, with average forward current dropping linearly to zero at +150 °C per Figure 4 in DS11013 Rev. 28–2.

Is SD103BW-7-F suitable for automotive applications?

SD103BW-7-F is not AEC-Q101 qualified. While it meets RoHS 3 and halogen-free requirements, Diodes specifies that automotive-grade versions require explicit PPAP-capable qualification and IATF 16949 manufacturing-available only under separate part numbers like SD103BWQ-7-F (if offered).

How does the SOD123 package affect thermal performance?

Mounted on FR-4 with Diodes' recommended pad layout, the SOD123 package delivers 340 °C/W junction-to-ambient thermal resistance. This limits continuous power dissipation to 367 mW at +25 °C ambient, making thermal relief pads essential for sustained 0.2 A operation above 60 °C.

What does the "-7-F" suffix indicate in SD103BW-7-F?

The "-7-F" suffix denotes tape-and-reel packaging: 3000 units per reel, 8 mm tape width, EIA-481-compliant carrier, and lead-free (Pb-free) finish. The "F" confirms full RoHS 3 compliance and halogen-free status per Diodes' Green definition.

SD103BW-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):: 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-7-F FAQ

1.How can I place an order for SD103BW-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for SD103BW-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 SD103BW-7-F reliable?

The price and inventory of SD103BW-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 SD103BW-7-F is usually 5 days.

3.What payment methods are accepted for SD103BW-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD103BW-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SD103BW-7-F?

SD103BW-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SD103BW-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 SD103BW-7-F?

For technical support, including SD103BW-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD103BW-7-F requirements.

6.How does Aetrix verify that SD103BW-7-F is sourced from the original manufacturer or authorized distributors?

All SD103BW-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 SD103BW-7-F meets industry standards.

7.What is the process for return or replacement of SD103BW-7-F?

All SD103BW-7-F units undergo pre-shipment inspection (PSI). If there is an issue with SD103BW-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 SD103BW-7-F part is unused and in its original packaging.

Return procedure for SD103BW-7-F:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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