Out-of-Stock

Classic Reference 78xx power supply linear regulator 3.3V 5V +-12V

For beginner: the low cost and high c/p linear regulator
For expert: the classic reference to compare new power supply circuit
58% lower noise than other 78xx regulator

78xx Option: 3.3V+5V

3.3V+5V
Dual 3.3V+5V
+-12V
Dual +-12V

Quantity

Description
Product Details

This item includes PCB and all thru-hole component are not soldered.

This is the best classic reference linear regulator for both beginner and expert.

For beginner: the low cost and high c/p linear regulator
For expert: the original classic reference when compare to the advantage of newer power supply circuit

Feature:

1) Panasonic EEUFC EEUFR low ESR capacitor and all electronic component are sourced from authorized distributor Arrow Electronics directly (guarantee no fake product from China)

2) High quality 304 stainless steel m3 screw for headsink to avoid rust after few months of use which commonly seen in low quality diy kit.

3) 58% lower noise than other 78xx regulator.

4) Easy customization and upgrade with preallocated footprint space for additional 5mm spacing decoupling film capacitor, LED and 5mA loading etc.

5) The PCB follows the official demo circuit for guarantee performance.

6) Compact size 60mm x 90mm

Bill of material for different voltage output option:

Description	Part number	Qty	3.3v+5v	Dual 3.3v+5V	+-12v	Dual +-12V
Panasonic low ESR Capacitor	EEUFC1E562	2	x1	x1	x1	x1
Onsemi or equivalent	1N4002	8	x1	x1	x1	x1
Nylon PA66 Hex standoff	M3 20+6mm	4	x1	x1	x1	x1
Green terminal block header	2P 5.08MM	2	x1	x1	x1	x1
Green terminal block	2P 5.08MM	2	x1	x1	x1	x1

Panasonic low ESR Capacitor	EEUFR1C102	2	x1	x2	x1	x2
Onsemi or Equivalent	1N4002	4	x1	x2	x1	x2
Aluminum Heatsink	16x11x21mm	2	x1	x2	x1	x2
304 stainless steel screw	M3 6mm	2	x1	x2	x1	x2

Blue terminal block	2P 5MM	2	x1	x2	0	0
JST 2.5mm 2P Connector	B2B XH-A	2	x1	x2	0	0
Texas Instruments +3.3V regulator	UA78M33	1	x1	x2	0	0
Fairchild +5V regulator or equivalent	LM7805ACT	1	x1	x2	0	0

Fairchild +12V regulator or equivalent	LM7812ACT	1	0	0	x1	x2
Fairchild -12V regulator or equivalent	LM7912	1	0	0	x1	x2
Blue terminal block	3P 5MM	1	0	0	x1	x2
JST 2.5mm 3P Connector	B3B XH-A	1	0	0	x1	x2

3.3v+5V Bare PCB	7805M33	1	x1	x1	x1	x1
+-12V Bare PCB	78127912	1	x1	x1	x1	x1

Assembly Instruction:

1) Double check the polarity of the capacitor and diode is correct before connect AC power input to the PCB, the capacitor will explode immediately if it is reversed connected. No return is accepted after the pcb is soldered.

2) Please read directly from the PCB and the official 78xx datasheet for usage detail.

http://www.ti.com/lit/ds/symlink/ua78m33.pdf

https://www.fairchildsemi.com/datasheets/LM/LM7805.pdf

https://www.fairchildsemi.com/datasheets/LM/LM7812.pdf

This item is in limited stock, maximum 5pcs per buyer. Please contact us if you want to buy more than 5, thanks.

Data sheet