News
La Mirada, California – On June 7, 2021, DLA Land and Maritime approved SSDI’s JANS1N8257US hyperfast rectifiers for QPL certification per MIL-PRF-19500/477. SSDI developed these 6 amp, 200 volt, 30 ns devices to provide higher performance than the 1N5811 within the smaller 1N5806 footprint. The JANS1N8257US provides significant improvements in output current, reverse voltage, peak surge current (125 A), thermal resistance (8.5°C/W), high temperature leakage current (100 µA @ 150°C) and forward voltage drop (.82 V @ 1 A) over the 1N5806US.
| Parameter | 1N8257US |
1N5806US |
| IO | 6 A | 2.5 A |
| VR | 200 V | 150 V |
| IFSM | 125 A | 35 A |
| RθJC | 8.5°C/W | 13°C/W |
| VF @ 1A | .820 V | .875 V |
| IR | 100 µA (@ 150°C) |
175 µA (@ 125°C) |
Compared to the 1N5811US, the 1N8257US provides an upgrade in reverse voltage and leakage current in addition to the smaller footprint and lighter package. The 1N8257 die is fabricated at SSDI’s wafer fab facility in La Mirada, California. SSDI QPL rectifier products feature a high temperature Category I eutectic metallurgical bond and void free hermetically sealed ceramic frit glass construction. Due to SSDI’s proprietary high temperature processing, these devices offer a more rugged package compared to glass sleeve type packages, which is shown by excellent cryogenic performance in liquid-to-liquid shock tests.
| Parameter | 1N8257US |
1N5811US |
| VR | 200 V | 150 V |
| IR | 100 µA (@ 150°C) |
525 µA (@ 125°C) |
| Length | .190" - .210" | .200" - .225" |
| Width | .097" - .110" | .137" - .148" |
| Weight | .20 g typ | .54 g typ |
The high density and high efficiency performance of the 1N8257 series is ideal for high reliability space and defense applications. The JANS1N8257US have been designed in for power supply applications in new space programs. The JANS1N8257 are also available as 4 amp axial leaded devices. The solid silver leads of the axial leaded version facilitate welding in solar panel applications. Contact SSDI online or call (562) 404-4474 for more information or to discuss your specific program requirements.
Features
- Hyperfast reverse recovery: 30 ns max
- PIV to 200 volts
- Hermetically sealed
- Low reverse leakage
- Void free ceramic frit glass construction
- For high efficiency applications
- Available in axial, square tab, square tab (short tab), and flat leads versions
- TX, TXV, and S level screening available - contact factory
- Alternative to 1N5807, US thru 1N5811, US
- Available as a QPL product per MIL-PRF-19500/774
Visit the Rectifiers product category (PRODUCTS > Rectifiers) to view additional Rectifiers and data sheets
SSDI's Rectifiers Catalog is also available for download at SUPPORT > Literature
