STMicroelectronics SPAC265FC12P0.30

Overview

SPAC265FC12P0.30 from STMicroelectronics is an open-frame, 3 W, 12 V AC-DC switch-mode power supply module with universal input (90–264 VAC), self-oscillating 300 kHz operation, 80% efficiency at full load, and 3750 VAC input-to-output isolation. It delivers up to 250 mA output current and is designed for auxiliary power in industrial control panels and communication equipment where compact board-mount DC bias is required.

For engineers reviewing the SPAC265FC12P0.30 datasheet, SPAC265FC12P0.30 pinout, SPAC265FC12P0.30 application, or SPAC265FC12P0.30 equivalent, key selection criteria include its open-frame mechanical form factor (35 × 20 × 22 mm), UL/EN safety compliance, continuous short-circuit protection, and absence of external component requirements beyond a recommended 100 µF/25 V low-ESR output capacitor.

Technical Context

This module implements an integrated flyback topology with primary-side regulation, eliminating optocoupler and secondary-side feedback components. Its self-oscillating controller operates at 300 kHz, enabling compact transformer design and meeting conducted EMI limits per EN55014-1/2 without additional filtering.

Input stage includes built-in fuse protection and inrush current limiting (≤10 A peak at 230 VAC); output features ±3% voltage accuracy, ±1% line regulation, and automatic restart short-circuit protection rated for indefinite operation at 1 A fault current.

Key Specifications

Pinout & Package

SPAC265FC12P0.30 uses an open-frame board-mount package measuring 35 × 20 × 22 mm (L×W×H), with no encapsulation resin. Terminals are soldered directly to PCB pads per Figure 3 and Figure 5 of Doc ID 14004 Rev 4.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar AC-DC converter applications.

Compared with VICOR VI-BR12 and RECOM RACM10-K/277, SPAC265FC12P0.30 uniquely combines open-frame serviceability, pre-certified safety compliance, and minimal external component count - making it optimal for cost-sensitive, space-constrained auxiliary supplies where 3 W suffices.

Availability

SPAC265FC12P0.30 is available at Aetrix Electronics and suitable for industrial control panels, smart metering systems, and building automation sensor nodes requiring stable component supply across multi-year production cycles.

Supply support for SPAC265FC12P0.30 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal products for industrial, automotive, and consumer markets.

The SPAC265 series belongs to ST's board-mount AC-DC power module product line, engineered specifically to replace custom transformer-based supplies in cost-sensitive, high-volume applications where safety certification time-to-market is critical.

FAQ

What is the minimum recommended output capacitor for SPAC265FC12P0.30?

The datasheet specifies a 100 µF, 25 V low-ESR electrolytic capacitor placed directly across +VOUT and GND. This value ensures stable regulation under dynamic load steps and suppresses output ripple below 120 mVpp. Using lower capacitance risks output overshoot during startup and increased line/load regulation error beyond ±6%.

Can SPAC265FC12P0.30 be used in medical equipment?

No - SPAC265FC12P0.30 is not certified to IEC 60601-1 and lacks the 4000 VAC reinforced isolation and creepage/clearance margins required for BF/CF-rated medical devices. It meets EN60950/UL60950 for information technology equipment only, and must be integrated into end-products complying with their respective safety standards.

Does this module require heatsinking at full load?

No active heatsink is required. At 3 W output and 80% efficiency, power dissipation is ~0.75 W. With its open-frame construction and 35 × 20 mm footprint, the module achieves thermal equilibrium ≤55 °C case temperature in free-air convection at 50 °C ambient - well within the −40 to +85 °C operating range.

Is the SPAC265FC12P0.30 RoHS compliant and lead-free?

Yes - SPAC265FC12P0.30 is RoHS compliant and manufactured using lead-free solder and halogen-free materials per ST's ECOPACK® specifications. The "RoHS compliant" statement appears in Section 1 of Doc ID 14004 Rev 4, and full material declarations are available through ST's official product portal.