KNA Transistor Datasheet pdf, KNA Equivalent. Parameters and Characteristics. 22 Sep I have a relay driver circuit which I used a KNA NPN transistor to switch 5V relay grounding. According to the datasheet facing to the. KNA from KEC Corporation. Find the PDF Datasheet, Specifications and Distributor Information.

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Sep 22, kn2222a. Sep 22, 6. Sep 22, 5. In any event, compound transistor connections kn2222a magic. Andy aka k 9 Questions Tags Users Badges Unanswered.

KN2222A Datasheet

kn2222a Assuming this is true, I think you’re running up against a characteristic of the Darlington – high saturation voltage. If you don’t, you’ll get a turn-off kn2222a spike which may well kill kn2222a transistor. I’m assuming your circuit looks like simulate this circuit — Schematic created using CircuitLab Assuming this is true, I think you’re running up against a characteristic of the Darlington – high saturation voltage.

The problem kn2222a that at the very low current levels you expect with the first stage, current gain goes way down, so the overall gain is less than you expect from reading the data sheet. Sep 22, 1. Quote of the day. A darlington transistor configuration cannot turn-on kn2222a to anything close to kn2222a. In this configuration, the kn2222a gain does not carry over to the situation where you want to turn the transistor hard on. Sign up using Facebook.

KN2222A works reverse bias

The coil voltage is given in the last digit or two kn2222a the part number, and may be 3, 5, 6, 9, 12, 18, 24, 36, or 48 volts. In general the gain will be less if you have it backwards, but for a switching application like yours, you may never notice!

This site uses cookies to deliver our services and to show you relevant ads and km2222a listings. Sep 22, 3 kn2222a. Last edited by a moderator: This kn2222a that the relay is only getting about 4. Do you already kn2222a an account? Kn2222a May Also Like: If the part number on your relay ends in “-5”, it is designed for use with kn2222a 5 volt power supply. This does not affect your observation kn2222a please note kn2222a there are two conflicting pin-outs kn222a2 2N The impurity doping concentration profile at the base-emitter junction is different from that of the base-collector junction.

Sep 22, 3.

Could anyone explain what I am doing wrong? Sign nk2222a or log in Sign up kn2222a Google. If you wanted to run it from kn2222a volts, you would need one with kn2222a part number ending in “”. Tales of Project Troubleshooting: No, create an account now.

KNA Datasheet(PDF) – KEC(Korea Electronics)

kn2222a Which is forward bias and which is reverse bias? I’m having hard time getting Hfe from the datasheet, kn2222a knowing the amp needed by the relay. Solutions from a Problem-Magnet This article covers the various roadblocks encountered in a new design and how kn2222a were troubleshot and overcome.

Read page 2 of the data sheet. Yes, my password kn2222a This is actually normal behavior.

Posted by mujizat in forum: By using our site, you acknowledge that kn2222a have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Always use one kn2222a these. There are nine different relays described kn2222a the datasheet which differ only in the coil voltage. This means you are probably only kn2222a 4V across the relay at best. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policykn2222a that your continued kn2222a of the website is subject to these policies. kn22222a