# RC snubber question (24V 9.2A DC) **URL:** \ **Category:** General Electronics\ **Created:** [November 15, 2024, 12:35pm UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242 "2024-11-15T12:35:59Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![borquee](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/borquee/32/669921_2.png) [@borquee](https://forum.arduino.cc/u/borquee)\ **Post date:** [November 15, 2024, 12:35pm UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/1 "2024-11-15T12:35:59Z")
Hi, Have to switch 24V 9.2A DC with a relay (G2R-1A) Snubber values are 8.46F and 7.4 ohms That does not look right ... What to do? Thanks B ---
**Author:** ![jim-p](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/jim-p/32/922840_2.png) [@jim-p](https://forum.arduino.cc/u/jim-p)\ **Post date:** [November 15, 2024, 12:47pm UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/2 "2024-11-15T12:47:14Z")
> [@borquee](#): > > Have to switch 24V 9.2A DC Is the load inductive, like a motor, solenoid, etc? ---
**Author:** ![Wawa](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/wawa/32/1211303_2.png) [@Wawa](https://forum.arduino.cc/u/Wawa)\ **Post date:** [November 15, 2024, 7:37pm UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/3 "2024-11-15T19:37:48Z")
> [@borquee](#): > > G2R-1A Can't you just use a flyback diode? Snubber circuits are for AC. Leo.. ---
**Author:** ![borquee](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/borquee/32/669921_2.png) [@borquee](https://forum.arduino.cc/u/borquee)\ **Post date:** [November 15, 2024, 7:57pm UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/4 "2024-11-15T19:57:39Z")
It’s a relatively large amp ---
**Author:** ![borquee](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/borquee/32/669921_2.png) [@borquee](https://forum.arduino.cc/u/borquee)\ **Post date:** [November 15, 2024, 7:58pm UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/5 "2024-11-15T19:58:22Z")
I have a diode on a solenoid side? ---
**Author:** ![JohnRob](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/johnrob/32/253560_2.png) [@JohnRob](https://forum.arduino.cc/u/JohnRob)\ **Post date:** [November 15, 2024, 9:21pm UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/6 "2024-11-15T21:21:33Z")
If you should use a diode that can carry 10A. If you are PWMing the motor the diode should be fast enough to not draw current right after switching. The specification here is the Trr or (reverse recovery time). This is the time the diode will conduct in the reverse direction after carrying current in the forward direction. ---
**Author:** ![Wawa](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/wawa/32/1211303_2.png) [@Wawa](https://forum.arduino.cc/u/Wawa)\ **Post date:** [November 15, 2024, 9:53pm UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/7 "2024-11-15T21:53:58Z")
> [@borquee](#): > > I have a diode on a solenoid side? What diode, what solenoid. Does it have anything to do with **[switching the power to an amplifier](https://forum.arduino.cc/t/relay-diodes-optocouplers/900282)**. Leo.. ---
**Author:** ![borquee](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/borquee/32/669921_2.png) [@borquee](https://forum.arduino.cc/u/borquee)\ **Post date:** [November 15, 2024, 11:55pm UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/8 "2024-11-15T23:55:28Z")
Omronn G2R-1A, 1N4007 ... that part is fine, more worried about the relay contacts ---
**Author:** ![Wawa](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/wawa/32/1211303_2.png) [@Wawa](https://forum.arduino.cc/u/Wawa)\ **Post date:** [November 16, 2024, 3:11am UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/9 "2024-11-16T03:11:09Z")
> [@borquee](#): > > more worried about the relay contacts True. 24volt/10A DC is about max for that relay. Not good for very frequent use. Maybe you should use a FET, or not. The 1N4007 is a slow high voltage 1Amp diode. The 1N4004 would be better for 24volt, but still slow and 1Amp. The 1N5004 could be better. For PWM, you need a fast recovery or Schottky diode. Plenty ~50volt/10A diodes to choose from. But you were asking for a relay, so that excludes PWM. Or maybe you're switching power to an amplifier, and don't need a flyback diode at all. If we only knew what you were switching... Leo.. ---
**Author:** ![jim-p](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/jim-p/32/922840_2.png) [@jim-p](https://forum.arduino.cc/u/jim-p)\ **Post date:** [November 16, 2024, 9:04am UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/10 "2024-11-16T09:04:52Z")
> [@borquee](#): > > It’s a relatively large amp ![image](https://europe1.discourse-cdn.com/arduino/original/4X/1/6/3/163f75e171387915e89f27156a5429e53ec01fb9.png) Make R = 50 and C= 10uF ---
**Author:** ![borquee](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/borquee/32/669921_2.png) [@borquee](https://forum.arduino.cc/u/borquee)\ **Post date:** [November 16, 2024, 6:35pm UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/11 "2024-11-16T18:35:35Z")
yes... it does ... it works just fine for couple of years now with 1N4007 on a solenoid size and nothing on a contact side ... there are no visible degradation on a contacts ... kind of doing small upgrades now I used relay because I like the "click" when I turn it on 🙂 ---
**Author:** ![jim-p](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/jim-p/32/922840_2.png) [@jim-p](https://forum.arduino.cc/u/jim-p)\ **Post date:** [November 16, 2024, 8:24pm UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/12 "2024-11-16T20:24:36Z")
All set to go now? ---
**Author:** ![borquee](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/borquee/32/669921_2.png) [@borquee](https://forum.arduino.cc/u/borquee)\ **Post date:** [November 17, 2024, 7:28pm UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/13 "2024-11-17T19:28:26Z")
as soon as stores open again ... ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [May 16, 2025, 7:28pm UTC](https://forum.arduino.cc/t/rc-snubber-question-24v-9-2a-dc/1322242/14 "2025-05-16T19:28:54Z")
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