SDM40E20LS-7-F Diodes Inc. Schottky Diode (SOT23 (3-Pin)) In Stock
Diodes Inc. SDM40E20LS-7-F is a series-connected dual Schottky diode array rated at 20 V and 400 mA DC with a maximum forward voltage of 0.31 V. Housed in a compact SOT-23-3 surface mount package, it suits voltage clamping and protection circuits. From $0.15 in stock with worldwide shipping.
- Manufacturer
- Diodes Inc.
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- SDM40E20LS-7-F Datasheet PDF
- Category
- Schottky Diode
- Price
- From $0.1500(MOQ 25)
- Temp Range
- -65.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Series-connected center-tap dual Schottky configuration enabling voltage doubler and rectifier circuits in a single SOT-23-3 package
- Low forward voltage of 0.31 V maximum reducing conduction losses in battery-powered and low-voltage rectification applications
- 400 mA DC continuous current rating in a compact SC-59/SOT-23-3 footprint ideal for portable and space-constrained PCB designs
Applications
SDM40E20LS-7-F is well suited for low-voltage rectification and polarity protection in portable consumer electronics and IoT devices where board space is limited to SOT-23 footprints. Its series center-tap topology supports voltage doubler circuits in battery chargers and DC-DC converter output stages. The 0.31 V maximum forward drop minimizes power loss in wearable devices and handheld instruments running from single-cell lithium batteries.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 12Weeks |
| YTEOL | 6 |
| Application | GENERAL PURPOSE |
| Configuration | SERIES CONNECTED, CENTER TAP, 2 ELEMENTS |
| Diode Element Material | SILICON |
| Diode Type | RECTIFIER DIODE |
| Forward Voltage-Max (VF) | 0.31V |
| JESD-30 Code | R-PDSO-G3 |
| JESD-609 Code | e3 |
| Non-rep Pk Forward Current-Max | 2A |
| Number of Elements | 2 |
| Output Current-Max | 0.4A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Dissipation-Max | 0.225W |
| Qualification Status | Not Qualified |
| Rep Pk Reverse Voltage-Max | 20V |
| Surface Mount | YES |
| Technology | SCHOTTKY |
| Terminal Finish | MATTE TIN |
| Terminal Form | GULL WING |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.70 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum forward voltage and continuous current rating of SDM40E20LS-7-F under normal operating conditions?
SDM40E20LS-7-F has a maximum forward voltage of 0.31 V and supports up to 400 mA DC continuous current. These low-loss characteristics make it suitable for high-efficiency rectification in portable power supplies, battery chargers, and wearable devices operating from 3.3 V or 5 V rails.
How does the series center-tap configuration of SDM40E20LS-7-F enable voltage doubler circuits?
In the series center-tap configuration, two Schottky elements share a common center node. Connecting capacitors to the anode and cathode ends allows a voltage doubler topology to produce approximately twice the input peak voltage, useful in low-power RF energy harvesting and boost converter circuits operating below 20 V with currents up to 400 mA.
Which PCB designs benefit from choosing SDM40E20LS-7-F over a discrete dual-diode solution in a larger package?
SDM40E20LS-7-F in SOT-23-3 occupies roughly 3 mm × 1.75 mm of PCB area, compared to approximately 6 mm × 4 mm for two discrete SOD-323 diodes. This 60% area reduction benefits smartwatch, hearing aid, and miniaturized IoT sensor boards where routing space is limited and a 20 V, 400 mA rating is sufficient.
What reverse voltage limit should designers observe when using SDM40E20LS-7-F in clamping applications?
SDM40E20LS-7-F is rated for a maximum reverse voltage of 20 V. Designers must ensure the peak reverse voltage in clamping or rectifier circuits does not exceed this limit, including transients. For bus voltages above 15 V, a 20% derating margin brings the effective working voltage to 16 V for reliable long-term operation.
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About Diodes Inc.
Diodes Inc. is a leading electronic component manufacturer. FindMyChip sources Diodes Inc. ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
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Diode
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $0.7100 | $17.75 |
| 100+ | $0.2938 | $29.38 |
| 500+ | $0.2230 | $111.52 |
| 1000+ | $0.2002 | $200.20 |
| 3000+ | $0.1720 | $516.00 |
| 6000+ | $0.1500 | $900.00 |
In Stock · 24h Response · Worldwide Shipping
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