1N5817 STMicroelectronics Diode (Diodes, Axial Diameter Horizontal Mounting) In Stock
The 1N5817 is a Schottky rectifier diode by STMicroelectronics, rated 1 A forward current and 20 V reverse voltage. Featuring a low forward voltage drop of 0.75 V max and fast switching in the DO-41 axial package. Available from stock worldwide with competitive pricing for high-volume orders.
- Manufacturer
- STMicroelectronics
- Package
- Diodes, Axial Diameter Horizontal Mounting
- Pin Count
- 2
- Lifecycle
- OBSOLETE
- Datasheet
- 1N5817 Datasheet PDF
- Category
- Diode
- Price
- From $0.0365(MOQ 1)
- Temp Range
- -65.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Low forward voltage drop of 0.75 V max enabling high-efficiency power rectification
- 1 A maximum forward current with 20 V reverse voltage in compact DO-41 axial package
- Silicon Schottky construction providing fast switching speed and low power loss for efficiency-critical designs
Applications
The 1N5817 is suited for low-voltage, high-frequency rectification in switch-mode power supplies, DC-DC converters, and battery charging circuits. Its low forward voltage drop makes it ideal for efficiency-sensitive designs where minimizing conduction losses is critical. It also finds use in freewheeling diode applications and polarity protection circuits in industrial and consumer electronics.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | 017AH |
| YTEOL | 0 |
| Additional Feature | FREE WHEELING DIODE, LOW POWER LOSS |
| Application | EFFICIENCY |
| Breakdown Voltage-Min | 20V |
| Case Connection | ISOLATED |
| Configuration | SINGLE |
| Diode Element Material | SILICON |
| Diode Type | RECTIFIER DIODE |
| Forward Voltage-Max (VF) | 0.75V |
| JEDEC-95 Code | DO-41 |
| JESD-30 Code | O-PALF-W2 |
| JESD-609 Code | e3 |
| Non-rep Pk Forward Current-Max | 25A |
| Number of Elements | 1 |
| Number of Phases | 1 |
| Output Current-Max | 1A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | ROUND |
| Package Style | LONG FORM |
| Qualification Status | Not Qualified |
| Rep Pk Reverse Voltage-Max | 20V |
| Reverse Current-Max | 1000 µA |
| Reverse Test Voltage | 20V |
| Surface Mount | NO |
| Technology | SCHOTTKY |
| Terminal Finish | MATTE TIN |
| Terminal Form | WIRE |
| Terminal Position | AXIAL |
| Package | Diodes, Axial Diameter Horizontal Mounting |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.80 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for 1N5817:
suggested
suggested
suggested
suggested
suggested
Rectifier Diode, Schottky, 1 Phase, 1 Element, 1A, 20V V(RRM), Silicon, DO-41
Frequently Asked Questions
What is the maximum forward voltage drop of the 1N5817 at rated current?
The 1N5817 exhibits a maximum forward voltage drop (VF) of 0.75 V at 1 A forward current, which is significantly lower than standard silicon p-n junction diodes that typically drop around 0.7 V to 1.1 V. This low VF is a key characteristic of Schottky diodes, making the 1N5817 well suited for high-efficiency rectification in power supply designs operating at 20 V or below.
Which power supply topologies benefit most from using the 1N5817 as a rectifier?
The 1N5817 is particularly advantageous in buck converters, flyback power supplies, and linear rectifier circuits operating at voltages up to 20 V and currents up to 1 A. Its fast reverse recovery and 0.75 V forward voltage drop reduce switching losses at frequencies from tens of kHz to several hundred kHz, making it a preferred choice over standard recovery diodes in efficiency-critical SMPS designs.
When should I choose 1N5817 over 1N5819 for a rectification circuit?
The 1N5817 is rated for 20 V reverse voltage while the 1N5819 is rated for 40 V. Choose the 1N5817 when your circuit's peak inverse voltage stays well below 20 V, such as in 5 V or 12 V supply rails, to take advantage of its lower cost and equivalent 1 A current rating. For rails above 20 V peak, the 1N5819 or 1N5820 (40 V, 3 A) should be used to provide adequate reverse voltage margin.
Is the 1N5817 RoHS-compliant and available in lead-free packaging?
Yes, STMicroelectronics offers the 1N5817 with a Pb-free (lead-free) code designation, confirming RoHS compliance. The DO-41 axial package is available in tape-and-reel or bulk packaging options. Operating temperature range spans from -65°C to +125°C junction temperature, suitable for standard industrial and consumer applications requiring compliant components.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2370 | $0.24 |
| 10+ | $0.1500 | $1.50 |
| 100+ | $0.0900 | $9.00 |
| 250+ | $0.0501 | $12.53 |
| 500+ | $0.0388 | $19.40 |
| 1000+ | $0.0365 | $36.50 |
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