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> SBEC/UBEC & Regulator > SBEC/UBEC

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HobbyKing™ HKU5 5V/5A UBEC

HobbyKing™ HKU5 5V/5A UBEC

This small and lightweight UBEC features a high efficiency switching mode BEC, providing better heat dissipation when compared to linear voltage regulation. The shielded PCB design and output EMF coil provide a stable, low noise voltage output. The HKU5 also features built-in reverse polarity protection.

Specifications:
Input: 7.2V-21V (2-5S Li-Po)
Output: 5V/5A
Dimension: 49mm*20mm*12mm (L*W*H)
Weight: 11.5g (wires included)



PRODUCT ID: 5AUBEC

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Weight: 14g
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Price  $5.75

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 Customer rated
594
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Total of 58 discussions.
jorgo  1 points - 2/26/2015
 
Can someone please doublecheck this statement: I can use this to connect to a 3s or 4sbattery to lower voltage for headlights operating at 4.8-6v
 v_max 4579 points
Input voltage is in range (from 2 to 5s) so 3 or 4s is OK. Output voltage is 5v DC so this match your requirement 4.8-6v. The only open question is your current (or power consumption) requirements . If required current is less then 5 amp (or in terms of power less then 25 Watt), then yes it's OK for use with your headlights.
Mar11  2656 points - 1/15/2015
 
hi can i use this to power my 5v fpv camera ?
 v_max 4579 points
If your camera has good power filter then yes. The problem is that's this is SWITCHING BEC which provide not well fitered power with HF frequency ripples which path-through to video. For camera, I'd recommend to use LINEAR BEC ... and hardly you need more then 1A ... so linear one is preferable for camera feeding
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 Patrik 60 points
Is it possible to maybe add a small capacitor which will smooth out the frequency ripples?
 v_max 4579 points
you can add low path filter.. ( LC filter) but what the sense? simple linear bec for current under 1A will be lighter and better. Simple 7805 regulator chip and small capacitor will do job better...
 Mar11 2656 points
hi vmax can you recomend a good linear bec ?
 v_max 4579 points
Most ESCs with BEC has linear 5v bec 1A build-in... So if you have ESC, then you can use ESC bec output for feeding your FPV camera... On multicopters you always have unused ubecs in escs...why not to use what you already have... If not then ....single chip LM7805 and 33-100uF capacitor will do the same... Unfortunately HK do not offer separate linear BECs, as well as most other suppliers too.
Mike  240 points - 12/5/2014
 
Can anyone confirm operation from 2S? and how low can a 2S battery go and still get 5V out? The similar X3 needs 9v to deliver rated output. Mike
jetson3000  30 points - 10/7/2014
 
Tested yesterday. It supplies 5.5 V with a 3S 2200 Lipo input. It is enough for 4 digit servos supply in a 3D plane! I hope the current will be good as well as the voltage.
 Jimbolina1 527 points
Hi Jetson. I use the previose version in loads of my planes and heli's. Far as I am concerned its bullit proof. Not one issue ever. Use it with confidence. Happy Landings
Henrik  2 points - 9/18/2014
 
Would it be a good move to solder 3.5mm bullet connectors and plug this in to the power distribution board?
 v_max 4579 points
The best practise is to connect all power connections at one point (star type as opposite to tree type wiring). So connecting to power distribution board is a good place.. Other thought. This bec is low current .. so you do not need 3.5mm bullets which is ok up to 30-40A ... you may smaller ones like 2mm to save weight.
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Overall Rating
SITAS
12 likes
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Verry small and cheap. Thanks hobbyking.


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Rusty Nuts
108 likes
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Purchased three of these for ignition voltage regulator duty in my large scale gas planes, when paired up with the turnigy 2100 Lipo receiver pack, you can run an engine all day versus the 4 cell NiMH packs. Working great in my planes, the 3A version works great too, but is a little longer and slightly heavier, but cost less. Next order, I will order more for spares for future projects.


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gianhulk
38 likes
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Really good, light and useful for no esc bec.


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90 likes
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Extra safety in your hobby


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nesperatu
94 likes
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ubec very small, but is doing its job


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