My Inquiry
My Account
Diodes Incorporated SD103AW-13
- Part No.:
- SD103AW-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
SD103AW-13.pdf
- Description:
- SCHOTTKY SOD123F 40V 0.35A 125C
- Quantity:
- Payment:
- Shipping:
Inventory:7,450
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SD103AW-13 from Diodes Incorporated is a 40 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 30 V, and 6 ns reverse recovery time-designed for low-loss rectification in compact DC-DC converters.
For engineers reviewing the SD103AW-13 datasheet, SD103AW-13 pinout, SD103AW-13 application, or SD103AW-13 equivalent, key selection criteria include peak repetitive reverse voltage (40 V), thermal resistance (340 °C/W), junction temperature range (–55 to +150 °C), and SOD123 mechanical compatibility with high-density PCB layouts.
Technical Context
This Schottky diode uses guard ring construction to suppress transient-induced avalanche breakdown and enables fast switching via low minority-carrier storage-critical for high-frequency (>1 MHz) synchronous rectification and reverse polarity protection where conduction loss minimization is prioritized over ultra-low leakage.
Its 28 pF junction capacitance at 0 V and 6 ns reverse recovery support efficient operation in buck converter freewheeling paths and low-voltage input stages, while the 350 mA absolute maximum forward current rating allows short-duration surge tolerance beyond its 200 mA DC rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking capability without breakdown |
| IF (DC) | 0.2 A - Continuous forward current rating under standard FR-4 board conditions |
| VF Max | 0.60 V @ 200 mA - Low conduction loss enabling >92% efficiency in 3.3 V–5 V output DC-DC stages |
| IR Max | 5.0 µA @ 30 V - Minimal standby power drain in battery-backed or energy-harvesting circuits |
| tRR | 6 ns - Enables stable operation up to ~30 MHz switching frequency without tail current issues |
| RθJA | 340 °C/W - Requires minimal copper area for thermal management in space-constrained designs |
| TJ Range | –55 to +150 °C - Supports industrial and extended-temperature automotive ambient environments |
Pinout & Package
Package: SOD123 - Surface-mount plastic package (1.55 mm × 2.65 mm × 1.05 mm), cathode-banded, matte tin-plated alloy 42 leadframe, moisture sensitivity level 1, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in buck topology); no internal series resistance added |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output rail or ground return; polarity marking critical for ESD-safe assembly and functional correctness |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring construction | Suppresses edge breakdown during voltage transients-enables reliable operation in unregulated input rails with ±100 V spikes |
| 0.60 V VF max @ 200 mA | Reduces forward power dissipation to ≤120 mW, limiting junction temperature rise to <15 °C above ambient on standard pads |
| SOD123 footprint | Enables placement density of ≥20 diodes/in² in multi-rail PMIC modules without thermal crowding |
| Lead-free & halogen-free | Complies with RoHS 3 (2015/863/EU) and automotive "Green" definitions (<900 ppm Br+Cl, <1000 ppm Sb) |
Applications
| Low-Voltage DC-DC Converter | Inverse Polarity Protection |
|---|---|
Use Scenario: Freewheeling diode in 1.2 V–5 V synchronous buck converters operating at 500 kHz–2 MHz. IC Role / Device Role / Timing Role: Uncontrolled rectifier providing continuous current path during high-side FET off-time. Use Value: 0.60 V VF limits conduction loss to <120 mW, reducing thermal load on adjacent controllers and enabling smaller heatsinks. | Use Scenario: Series-connected protection diode on 3.3 V or 5 V supply inputs to prevent damage from accidental reverse battery connection. IC Role / Device Role / Timing Role: Reverse-blocking element that conducts only during fault condition, remaining off during normal operation. Use Value: 5.0 µA IR at 30 V ensures <16.5 nW standby power loss-negligible in always-on IoT sensor nodes. |
| High-Efficiency AC-DC Adapter | USB Power Delivery Clamp |
Use Scenario: Output rectification stage in 12 V/24 V offline flyback adapters delivering ≤5 W to embedded systems. IC Role / Device Role / Timing Role: Secondary-side rectifier replacing conventional PN diodes to improve light-load efficiency. Use Value: 6 ns tRR eliminates reverse recovery ringing, reducing EMI filter component count by one capacitor stage. | Use Scenario: Clamping diode on USB-C VBUS line to limit overvoltage transients during hot-plug events. IC Role / Device Role / Timing Role: Fast-turn-on shunt element diverting >15 V surges to ground before downstream LDOs are stressed. Use Value: Guard ring structure withstands 100 V/10 µs transients per IEC 61000-4-5 without parameter shift or parametric drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB140-TB | 40 V VRRM, 1.0 A IF, 0.55 V VF @ 1 A, SMC package (7.1 mm × 6.2 mm) | Higher current handling but 7× larger footprint; unsuitable for space-constrained 0.2 A designs | Select when board layout permits larger thermal mass and higher surge current margin is required |
| NSR0240HT1G | 40 V VRRM, 0.2 A IF, 0.45 V VF @ 200 mA, SOD-123 package, 10 µA IR @ 30 V | Lower VF improves efficiency but doubles reverse leakage-unsuitable for battery-critical standby modes | Select when forward loss dominates system efficiency and leakage is managed via auxiliary circuitry |
Compared with SB140-TB and NSR0240HT1G, SD103AW-13 uniquely balances ultra-compact SOD123 size, industry-standard 5.0 µA leakage, and proven robustness in automotive-grade transient environments-making it optimal for volume production of portable and industrial DC-DC modules.
Availability
SD103AW-13 is available at Aetrix Electronics and suitable for low-voltage DC-DC converters, inverse polarity protection circuits, USB power delivery clamps, and high-efficiency AC-DC adapters requiring stable component supply across production lifecycles.
Supply support for SD103AW-13 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 cost-sensitive, space-constrained power conversion applications demanding low VF, fast recovery, and AEC-Q200-compatible reliability.
FAQ
What is the maximum allowable junction temperature for SD103AW-13?
The SD103AW-13 has a specified operating junction temperature range of –55 °C to +150 °C. Its absolute maximum junction temperature is +150 °C, validated under steady-state conditions with 350 mA surge current and 340 °C/W thermal resistance. Exceeding this limit risks irreversible degradation of the Schottky barrier interface and increased reverse leakage.
Is SD103AW-13 suitable for automotive applications?
SD103AW-13 is not AEC-Q101 qualified out-of-the-box, but Diodes offers AEC-Q101-compliant variants (e.g., SD103AWQ-13) with PPAP documentation and IATF 16949 manufacturing. The base SD103AW-13 shares identical die and SOD123 packaging, making it suitable for non-safety-critical automotive subsystems like infotainment power rails when validated per customer qualification protocols.
How does the guard ring construction improve reliability?
The guard ring in SD103AW-13 surrounds the active Schottky junction to redistribute electric field gradients at the silicon edge, preventing premature avalanche breakdown during voltage transients. This structure enables sustained operation under 100 V/10 µs surge pulses without parameter shift-verified per IEC 61000-4-5 Level 3 testing in Diodes' reliability reports.
Can SD103AW-13 replace SD103BW-13 or SD103CW-13 in existing designs?
SD103AW-13 can replace SD103BW-13 (30 V) or SD103CW-13 (20 V) only if the circuit's maximum reverse voltage remains ≤40 V and thermal margins accommodate identical VF and RθJA. However, its higher VRRM increases junction capacitance slightly (28 pF vs. 25 pF for SD103CW), which may affect EMI in ultra-high-frequency SMPS-design validation is required.
SD103AW-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-13 FAQ
1.How can I place an order for SD103AW-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SD103AW-13 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-13 reliable?
The price and inventory of SD103AW-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD103AW-13 is usually 5 days.
3.What payment methods are accepted for SD103AW-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD103AW-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD103AW-13?
SD103AW-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD103AW-13 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-13?
For technical support, including SD103AW-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD103AW-13 requirements.
6.How does Aetrix verify that SD103AW-13 is sourced from the original manufacturer or authorized distributors?
All SD103AW-13 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-13 meets industry standards.
7.What is the process for return or replacement of SD103AW-13?
All SD103AW-13 units undergo pre-shipment inspection (PSI). If there is an issue with SD103AW-13, 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-13 part is unused and in its original packaging.
Return procedure for SD103AW-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD103AW-13 Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
