Is the output a percentage of the input, or a constant? If I have 20 v in, adjust to 5v out; input goes to 30v will output be 5v or 7.5v?

Output voltage is set by the variable resistor and stays independent of the input voltage ( as long as the input voltage stays a few volts above the output voltage). If the input voltage dips, the output voltage will also dip.

What are the dimensions of this voltage regulator?

43 x 21 x 12 mm using caliper on actual product.

Is there any datasheet / CAD model that shows mounting hole dimensions and location of the mounting holes?

None I know of just trace it out with standoff mounted in your project case and use dremel dril bit kit according to thread hole size. Good-luck.

Does anyone have the dimensions of mounting holes, and voltage input/output locations?

Mounting holes will work with standoff kits on amazon nylon or etal with screws . The pcb in maked vcc in- + and output - & +.

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🔋 Power Your Projects with Precision!

DIY FRIENDLY - Perfect for hobbyists and professionals alike, with 6 modules included.
POWERFUL PERFORMANCE - Delivers a maximum output current of 3A for demanding projects.
PRECISION ENGINEERING - Crafted with 36u thickened circuit boards for unmatched reliability.
VERSATILE VOLTAGE RANGE - Input from 3V to 40V, output adjustable from 1.5V to 35V.
NOISE REDUCTION TECHNOLOGY - Equipped with high-Q inductance and solid-state capacitors for clean power.

The Valefod 6 Pack LM2596 DC to DC Buck Converter is a high-efficiency voltage regulator designed for various electronic projects. With a wide input voltage range of 3V to 40V and an adjustable output from 1.5V to 35V, this compact module (45 * 23 * 14 mm) delivers up to 3A of current. Its advanced design features noise filtering capabilities, making it ideal for DIY enthusiasts and professionals seeking reliable power solutions.

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Manufacturer	Valefod
Brand	Valefod
Item Weight	0.494 ounces
Product Dimensions	0.9 x 1.77 x 0.55 inches
Item model number	VA-HW-411
Is Discontinued By Manufacturer	No
Manufacturer Part Number	VA-139-52

Valefod 6 Pack LM2596 DC to DC High Efficiency Voltage Regulator 3.0-40V to 1.5-35V Buck Converter DIY Power Supply Step Down Module

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