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Diodes Incorporated SD103ATW-7
- Part No.:
- SD103ATW-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
SD103ATW-7.pdf
- Description:
- DIODE ARR SCHOT 40V 175MA SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:4,331
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Product details
Overview
SD103ATW-7 from Diodes Incorporated is a surface-mount Schottky barrier diode array containing three fully isolated Schottky diodes in a single SOT363 package, rated for 40 V peak repetitive reverse voltage, 350 mA forward continuous current per diode, and featuring low forward voltage drop (0.37 V typical at 20 mA) and fast switching (10 ns reverse recovery time), used in compact DC-DC converter output rectification and USB port protection circuits.
For engineers reviewing the SD103ATW-7 datasheet, SD103ATW-7 pinout, SD103ATW-7 application, or SD103ATW-7 equivalent, key selection criteria include per-diode current derating when using multiple elements, thermal resistance (500 °C/W), leakage current (≤2.0 µA at 30 V), and compatibility with lead-free reflow profiles under J-STD-020 Level 1 moisture sensitivity.
Technical Context
This triple Schottky array employs guard ring construction to enhance transient immunity and suppress leakage under high reverse bias, enabling reliable operation in noisy automotive and industrial power rails. Its low 0.32 V typical forward voltage at 5 mA reduces conduction loss in low-voltage synchronous rectifier paths.
The device operates across –55 °C to +125 °C and exhibits 50 pF total capacitance at 0 V reverse bias, supporting high-frequency switching up to several MHz without excessive capacitive loading on signal or power nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum non-repetitive reverse voltage each diode withstands without breakdown |
| IFM | 350 mA - Peak forward current per diode; derated to 262 mA when two or three diodes are simultaneously active |
| VF @ 20 mA | 0.37 V typical - Enables <100 mW conduction loss per diode in 3.3 V or 5 V rail clamping applications |
| tRR | 10 ns - Supports switching frequencies >10 MHz in flyback snubber or OR-ing circuits |
| IR @ 30 V | 2.0 µA max - Ensures minimal standby current leakage in battery-backed systems |
| RθJA | 500 °C/W - Requires FR-4 PCB with recommended pad layout to sustain full power dissipation (200 mW) |
| CT @ 0 V | 50 pF - Limits high-frequency signal coupling between adjacent diodes in shared-package routing |
Pinout & Package
Package: SOT363 - 6-pin, 2.0 mm × 2.225 mm surface-mount plastic package with matte tin-plated leads, UL 94V-0 rated molding compound, and J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode 1 | Input node for first independent Schottky path; requires external cathode connection |
| 2 | Cathode of Diode 1 | Common return for D1; electrically isolated from D2/D3 cathodes |
| 3 | Anode of Diode 2 | Second independent anode; no internal connection to Pin 1 or Pin 5 |
| 4 | Cathode of Diode 2 | Isolated return for D2; enables dual-rail OR-ing without cross-conduction |
| 5 | Anode of Diode 3 | Third independent anode; supports triple-path redundancy or multi-output rectification |
| 6 | Cathode of Diode 3 | Fully isolated cathode terminal; allows individual biasing or sensing per diode |
Key Features
| Feature | Design Value |
|---|---|
| Three isolated Schottky diodes | Enables independent power path control in multi-rail systems without shared cathode interference |
| Guard ring construction | Improves ESD robustness and suppresses leakage during voltage transients on automotive 12 V lines |
| Low VF (0.27 V min @ 1 mA) | Reduces startup losses in low-current bias networks and sensor supply rails |
| Lead-free & halogen-free | Meets IPC-J-STD-609 Category 1 requirements for Br/Cl ≤ 900 ppm and Sb ≤ 1000 ppm |
| J-STD-020 Level 1 | Allows unlimited floor life and standard reflow without baking or dry pack handling |
Applications
| USB Port Protection | Multi-Rail OR-ing |
|---|---|
Use Scenario: Protecting downstream USB peripherals from reverse polarity or overvoltage events on VBUS lines. IC Role / Device Role / Timing Role: Discrete Schottky clamp diode array providing bidirectional fault isolation per port. Use Value: 0.36 V max VF at 100 mA ensures <360 mW dissipation during sustained 1 A short-circuit clamp, minimizing thermal stress. | Use Scenario: Combining outputs from redundant 3.3 V LDOs or DC-DC converters in telecom line cards. IC Role / Device Role / Timing Role: Independent anode-cathode pairs prevent backfeed between parallel power sources. Use Value: Fully isolated terminals eliminate need for external blocking FETs or complex sequencing logic. |
| Automotive Body Control Module | Low-Voltage Sensor Biasing |
Use Scenario: Reverse-polarity protection for LIN bus transceivers and LED drivers in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Guard ring-enhanced Schottky array absorbing load dump spikes up to 40 V. Use Value: 1.0 A non-repetitive surge rating handles ISO 7637-2 Pulse 5a without derating or external TVS. | Use Scenario: Providing isolated bias paths for three temperature sensors in HVAC control units. IC Role / Device Role / Timing Role: Triple-anode configuration supplies separate regulated 2.5 V references with minimal crosstalk. Use Value: 50 pF inter-terminal capacitance prevents signal coupling between analog sensor channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB330-TB | Single-diode SOT23 package; 30 V VRRM, 3 A IFM, higher VF (0.5 V typ @ 1 A) | Higher current per element but no multi-diode integration; requires three discrete placements | Select when board space permits discrete layout and peak current exceeds 350 mA per path |
| NSR330HT1G | Triple Schottky in SOT363; 30 V VRRM, 300 mA IFM, 0.45 V VF @ 100 mA | Lower voltage rating and higher VF increase conduction loss in 5 V systems | Prefer for cost-sensitive consumer designs where 30 V rating suffices and thermal margin is ample |
Compared with SB330-TB and NSR330HT1G, SD103ATW-7 delivers optimal balance of 40 V rating, low VF (0.37 V), and triple-isolation in minimal footprint-critical for space-constrained automotive and industrial modules requiring simultaneous multi-rail protection.
Availability
SD103ATW-7 is available at Aetrix Electronics and suitable for USB port protection, multi-rail OR-ing, automotive body control modules, and low-voltage sensor biasing requiring stable component supply and long-term production continuity.
Supply support for SD103ATW-7 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 SD103ATW belongs to Diodes' Schottky Diode Arrays product line, engineered specifically for high-density power management in automotive, industrial, and computing applications where isolation, low VF, and AEC-Q200 readiness are essential.
FAQ
What is the maximum ambient temperature for continuous operation at full rated current?
SD103ATW-7 supports continuous operation up to +125 °C junction temperature. At 350 mA per diode and RθJA = 500 °C/W, the maximum allowable ambient temperature is +85 °C when mounted on FR-4 with the recommended pad layout; derating is required above this point per Figure 4's power derating curve.
Can all three diodes be operated simultaneously at full current rating?
No. Per Note 5 in the datasheet, simultaneous use of two or three diodes requires derating each to 75% of the single-diode rating: 262 mA per diode. This accounts for cumulative thermal dissipation within the shared SOT363 package and prevents exceeding the 200 mW total power limit.
Is SD103ATW-7 qualified to AEC-Q200?
While not explicitly AEC-Q200 certified in the public datasheet, SD103ATW-7 is manufactured in IATF 16949-certified facilities and supports PPAP documentation. Diodes states that automotive-grade versions meeting AEC-Q200 are available upon request with specific change control-contact Diodes' automotive team for qualification status and part numbering.
How does the guard ring construction improve reliability in real-world applications?
The guard ring minimizes edge leakage currents and enhances transient voltage withstand by controlling electric field distribution at the silicon junction periphery. In practice, this extends operational life in automotive environments subject to load dump (ISO 7637-2) and improves consistency of reverse leakage (<2.0 µA at 30 V) across temperature and process variation.
SD103ATW-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Diode Configuration:
- 3 Independent
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 175mA
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 10 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 30 V
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
SD103ATW-7 FAQ
1.How can I place an order for SD103ATW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SD103ATW-7 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 SD103ATW-7 reliable?
The price and inventory of SD103ATW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD103ATW-7 is usually 5 days.
3.What payment methods are accepted for SD103ATW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD103ATW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD103ATW-7?
SD103ATW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD103ATW-7 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 SD103ATW-7?
For technical support, including SD103ATW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD103ATW-7 requirements.
6.How does Aetrix verify that SD103ATW-7 is sourced from the original manufacturer or authorized distributors?
All SD103ATW-7 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 SD103ATW-7 meets industry standards.
7.What is the process for return or replacement of SD103ATW-7?
All SD103ATW-7 units undergo pre-shipment inspection (PSI). If there is an issue with SD103ATW-7, 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 SD103ATW-7 part is unused and in its original packaging.
Return procedure for SD103ATW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD103ATW-7 Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
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BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
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