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
What are the key features of 1N5817?
- 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
What is 1N5817 used for?
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.
What are the specifications of 1N5817?
| 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 |
Where can I find the 1N5817 datasheet?
1N5817 Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for 1N5817?
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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Why Buy from FindMyChip
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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