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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6 Pack LM2596 DC to DC High Efficiency Voltage Regulator 3.2-35V to 1.25-30V Buck Converter DIY Power Supply Step-Down Module

6 Pack LM2596 DC to DC High Efficiency Voltage Regulator 3.2-35V to 1.25-30V Buck Converter DIY Power Supply Step-Down Module

Product ID: 50553021

Details

Brand
Valefod
Current Rating
2.5 Amps 3
Item Weight
14 Grams
Power Source
Battery
Product Dimensions
0.9"D x 1.77"W

⚡92% max efficiency

📏Compact 45x23x14mm size

🔧Adjustable 1.25-30V output

86 zł

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Sold byAmazon PolandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power your innovation with precision and efficiency — don’t get left in the voltage dust!

READY FOR ANY PROJECT - Six modules per pack, each tested and anti-static sealed, perfect for prototyping or scaling your power solutions.
PRECISION POWER CONTROL - Fine-tune voltage from 1.25V to 30V with a simple screwdriver twist for perfect DIY customization.
COMPACT DURABLE DESIGN - Thickened 36μ circuit boards and solid-state capacitors ensure long-lasting reliability in a mini 45x23x14mm form factor.
SAFE RELIABLE OPERATION - Built-in short circuit and over-temperature protection keeps your electronics secure and stable.
HIGH EFFICIENCY PERFORMANCE - Maximize your projects with up to 92% conversion efficiency, reducing energy waste and heat.

This 6-pack LM2596 DC-DC buck converter set offers adjustable 1.25-30V output at up to 3A with 92% max efficiency. Featuring thickened circuit boards, high-Q inductors, and solid-state capacitors, these compact 45x23x14mm modules provide reliable, noise-filtered power conversion with built-in safety protections. Ideal for DIY electronics, prototyping, and professional projects requiring stable step-down voltage regulation.

Specifications

ASIN	B076H3XHXP
Best Sellers Rank	#113,273 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #454 in Power Converters
Brand	Valefod
Brand Name	Valefod
Current Rating	2.5 Amps, 3 Amps
Customer Reviews	4.5 out of 5 stars 1,195 Reviews
Item Dimensions D x W x H	0.9"D x 1.77"W x 0.55"H
Item Weight	14 Grams
Manufacturer	Valefod
Maximum Frequency	65 KHz
Minimum Frequency	50 Hz
Model	VA-HW-411
Number of Items	6
Part Number	VA-139-52
Power Source	Battery Powered
Product Dimensions	0.9"D x 1.77"W x 0.55"H
UPC	889328049201
Unit Count	6.0 Count

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86 zł

Duties & taxes included

In stock

Sold byAmazon PolandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Poland.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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