Vehicle DC Step-Down Power Converter 12V | Ultra-Thin Buck Module | 3.3V–9V Output

A compact, ultra-thin DC step-down power converter designed for vehicle and instrument applications. Converts 12V DC input to a stable lower output voltage — available in 3.3V, 4.2V, 5V, 6V, 7.5V, and 9V variants. At just 11mm thin and 14g, it fits where standard converters can't.

Key Features

• Multi-output options – choose from 3.3V, 4.2V, 5V, 6V, 7.5V, or 9V to suit your application
• >95% conversion efficiency – stable, low-loss power delivery
• Ultra-thin 11mm shell – space-saving design, slimmer than traditional plastic housings
• Built-in protection – overcurrent, overheating, short circuit, and reverse polarity protection
• Wide operating temperature – rated −40°C to +80°C for reliable performance in all conditions
• Natural heat dissipation – no fan required; passive cooling
• Versatile use – compatible with instruments, sensors, and electronics requiring regulated low-voltage DC

Specifications

• Input voltage: DC 8–15V
• Output voltage: 3.3V / 4.2V / 5V / 6V / 7.5V / 9V (select variant)
• Output current: 2.5A (9V variant: 1A)
• Output power: up to 18.75W (variant dependent)
• Conversion efficiency: >95%
• No-load consumption: 10–12mA
• Operating temperature: −40°C to +80°C
• Cable length: 13 cm (including connectors)
• Dimensions: 43 × 22 × 11 mm
• Weight: approx. 14g

Note: Includes power converter only. Other items shown in images are not included.