RS PRO PCB Transformer 2 x 9 V AC, 2 Outputs, 1.5 VA, 230 V Primary, 32.5x27.5x24 mm, 121-3823

RS PRO 121-3823 PCB Transformer is a high-quality mains transformer designed for PCB mounting in electronic applications. It features a single 230 V AC primary winding and two independent 9 V AC secondary outputs, making it suitable for circuits needing dual low voltage supply. The transformer delivers a power rating of 1.5 VA and supports both series and parallel secondary winding connections, enabling a wide range of current and voltage options for designers.

The unit’s compact dimensions (32.5 mm length, 27.5 mm width, 24 mm depth) allow for easy integration into space-limited printed circuit boards. The transformer is constructed with a double section bobbin, ensuring low interwinding capacitance and reduced radiated noise for environments sensitive to electrical interference. Flash testing and complete electrical evaluations guarantee high reliability and performance.

RS PRO PCB transformers are renowned for their efficiency and low temperature rise, supporting stable operation up to a maximum of 130°C. Designed for global acceptance, the transformer complies with safety and environmental standards including AS/NZS 61558.1, IEC/BS/EN 61558-2-6, RoHS, IEC/BS/EN 61558-1, and CE. With an isolation voltage rated at 4 kVrms, the product ensures secure separation between primary and secondary windings, protecting sensitive circuits and personnel.

This unit is suitable for powering instrumentation, control circuits, low-voltage lighting, signal processing, and other commercial and industrial electronic systems. Typical use cases include manufacturing automation, laboratory control panels, HVAC electronics, and industrial automation. Its PCB mount form factor offers a simple solution for OEMs and electronics manufacturers seeking reliable, low-voltage mains isolation.

The RS PRO 121-3823 transformer meets demanding application requirements with proven performance and compliance. In addition to its technical excellence, the product’s compliance with RoHS and international standards assures suitability for quality-focused projects.

Designed for PCB mounting in electronic circuits requiring dual low voltage supply. Provides two independent 9 V AC secondary outputs for versatility in designs. Operates with a 230 V AC primary winding, suitable for global applications.

High efficiency, low temperature rise, and reliable isolation up to 4 kVrms. Compact footprint (32.5 x 27.5 x 24 mm) ideal for space-constrained PCBs. Meets AS/NZS 61558.1, IEC/BS/EN 61558-2-6, RoHS, CE standards for safety and environmental compliance.

Rated for maximum operating temperature of 130°C. Supports series and parallel secondary configuration for flexible current options. Flash tested and electrically tested for ensured quality. Discover more solutions in PCB Transformers from RS PRO and browse related components for your industrial, laboratory, and commercial electronics projects.