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STMicroelectronics SPAC265BC12P0.30
- Part No.:
- SPAC265BC12P0.30
- Manufacturer:
- STMicroelectronics
- Category:
- AC DC Converters
- Package:
- 4-SIP Module
- Datasheet:
-
SPAC265BC12P0.30.pdf
- Description:
- AC/DC CONVERTER 12V 3W
- Quantity:
- Payment:
- Shipping:
Inventory:4,061
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Product details
Overview
SPAC265BC12P0.30 from STMicroelectronics is an encapsulated, isolated 3 W AC-DC switch-mode power supply module delivering 12 V DC at up to 250 mA from universal 90–264 VAC input. It features 3750 VAC input-to-output isolation, ±3% output voltage accuracy, and self-oscillating 300 kHz operation. Designed for auxiliary power in industrial control panels and appliance mainboards, it requires no external circuitry beyond a recommended 100 µF/25 V low-ESR capacitor.
For engineers reviewing the SPAC265BC12P0.30 datasheet, SPAC265BC12P0.30 pinout, SPAC265BC12P0.30 application, or SPAC265BC12P0.30 equivalent, key selection criteria include its certified safety compliance (EN60950, UL60950), 400,000-hour MTBF at 50 °C, -40 to +85 °C operating range, resin-encapsulated construction, and drop-in board-mount integration without feedback loop design.
Technical Context
This module implements a fully integrated offline flyback converter with primary-side regulation - eliminating optocoupler and secondary-side feedback components. Its self-oscillating controller operates at 300 kHz, enabling compact magnetics and high efficiency (80% typ. at full load) across universal AC input.
Input protection includes a built-in fuse and 10 A inrush current rating (250 VAC); output protection comprises continuous automatic-restart short-circuit limiting at 1 A and ±6% load regulation from 5% to 100% load. Isolation meets reinforced insulation requirements per EN60950 with 3750 VAC dielectric strength and 100 MΩ isolation resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 90–264 VAC / 120–370 VDC - supports global mains without manual voltage selection |
| Output Voltage | 12 V ±3% - tightly regulated for logic-level microcontroller or sensor bias rails |
| Max Output Current | 250 mA - sufficient for low-power MCU, I/O isolators, or LED drivers |
| Isolation Voltage | 3750 VAC - enables safe separation between AC mains and low-voltage control circuits |
| Efficiency | 80% typical at full load - reduces thermal stress in enclosed enclosures |
| Operating Temp | -40 to +85 °C - validated for industrial ambient without derating |
| MTBF | 400,000 hours at 50 °C - supports long-life embedded deployments |
Pinout & Package
SPAC265BC12P0.30 uses a resin-encapsulated, board-mount package measuring 35 × 20 × 22 mm (L×W×H). The module has 4 terminals: two AC input pins (L/N) and two DC output pins (+VOUT/GND), arranged in a single-row through-hole configuration compatible with standard PCB footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| L | AC Line Input | Connects to live AC mains; fused internally for overcurrent protection |
| N | AC Neutral Input | Completes AC input path; referenced to internal primary ground |
| +VOUT | DC Positive Output | Delivers regulated 12 V; requires external 100 µF low-ESR capacitor per datasheet |
| GND | DC Ground Output | Isolated DC return; galvanically separated from AC input by 3750 VAC barrier |
Key Features
| Feature | Design Value |
|---|---|
| 100% Production Electrical Test | Every unit verified for VI, VO, IO, isolation, and protection functions before shipment |
| UL-Conform Resin Encapsulation | Provides mechanical robustness, moisture resistance, and flame-retardant (UL94-V0) housing |
| Regulatory Compliance | Certified to EN60950, UL60950, EN55014-1/2, EN60730-1/2-9, EN61010-1, CAN/CSA-C22.2 No. 60950-00 |
| Low Standby Power | Meets energy-efficiency requirements for always-on auxiliary supplies in standby mode |
| Short-Circuit Protection | Automatic restart after fault clearance - prevents latch-up and enables unattended recovery |
Applications
| Industrial PLC I/O Modules | Smart Appliance Control Boards |
|---|---|
Use Scenario: Providing isolated 12 V bias for digital I/O expansion cards in programmable logic controllers. IC Role / Device Role / Timing Role: Auxiliary AC-DC power source for microcontrollers, optocouplers, and level-shifters on field-side I/O boards. Use Value: Eliminates need for discrete transformer, rectifier, and regulator design - reduces BOM count and layout area by >70%. | Use Scenario: Powering display backlight drivers and touch controller ICs in refrigerator or washing machine mainboards. IC Role / Device Role / Timing Role: Primary auxiliary supply for low-noise 12 V rail feeding LCD bias and capacitive sensing circuits. Use Value: Delivers stable output despite wide AC line variation (90–264 VAC), ensuring consistent display brightness and touch response. |
| Medical Diagnostic Equipment | Building Automation Sensors |
Use Scenario: Supplying isolated 12 V to patient-monitoring front-end signal conditioning modules. IC Role / Device Role / Timing Role: Safety-isolated auxiliary power for analog front-ends and ADC reference circuits. Use Value: 3750 VAC isolation and EN61010-1 certification enable direct integration into Class I medical devices. | Use Scenario: Powering wireless Zigbee/Z-Wave sensor nodes mounted in HVAC ducts or lighting fixtures. IC Role / Device Role / Timing Role: Compact, convection-cooled AC-DC source for battery-charging circuits and RF transceivers. Use Value: -40 to +85 °C operating range and 400,000-hour MTBF support maintenance-free deployment in unconditioned environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vicor VI-261-CW | Higher power (6 W), 2" × 1" footprint, higher cost, no built-in fuse | Requires external fuse and EMI filter; suited for higher-density designs needing >3 W | Select if board space allows larger footprint and 6 W output is required |
| RECOM RACM10-K/277 | 10 W output, wider temp range (-40 to +105 °C), open-frame only, RoHS-compliant | Not encapsulated - requires customer enclosure and safety spacing per EN60950 | Choose when higher power and extended temperature are critical, and system-level certification is feasible |
Compared with Vicor VI-261-CW and RECOM RACM10-K/277, SPAC265BC12P0.30 offers certified safety, plug-and-play integration, and lowest system-level design effort - ideal for cost-sensitive, volume industrial applications where 3 W and encapsulation are sufficient.
Availability
SPAC265BC12P0.30 is available at Aetrix Electronics and suitable for industrial PLCs, smart home appliances, building automation sensors, and medical diagnostic equipment requiring stable component supply, regulatory-certified isolation, and long-lifecycle availability.
Supply support for SPAC265BC12P0.30 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 discrete components for industrial, automotive, and consumer markets.
SPAC265BC12P0.30 belongs to ST's SPAC family of certified AC-DC power modules - engineered specifically for simplified, safety-compliant auxiliary power in space-constrained industrial and white-goods applications.
FAQ
What is the minimum recommended input capacitor for SPAC265BC12P0.30?
The datasheet specifies a 100 µF, 25 V low-ESR aluminum electrolytic capacitor placed directly across the +VOUT and GND terminals. This capacitor stabilizes output ripple under dynamic load changes and ensures reliable short-circuit recovery. Using a lower capacitance or higher ESR may cause output instability or premature shutdown during transient loads.
Can SPAC265BC12P0.30 be used in DIN-rail mounted industrial enclosures?
Yes - its -40 to +85 °C operating range, 400,000-hour MTBF, and resin-encapsulated construction make it suitable for DIN-rail mounted PLCs and motor drives. Ensure free-air convection cooling and maintain ≥2 mm creepage/clearance from adjacent high-voltage traces per EN60950.
Does SPAC265BC12P0.30 require heatsinking?
No heatsink is required. The module is rated for full 3 W output at +50 °C ambient with free-air convection. At +70 °C ambient, output power derates linearly to ~2.2 W. Thermal performance is validated per MIL-HDBK-217E methodology and confirmed in the 2009 Rev 4 datasheet.
Is SPAC265BC12P0.30 compliant with modern RoHS and REACH requirements?
Yes - it is RoHS compliant per ECOPACK® specifications and conforms to REACH SVHC thresholds. ST's ECOPACK® documentation confirms lead-free terminations, halogen-free molding compound, and full material declaration traceability. Compliance status is documented in ST's official product change notices dated 2009 onward.
SPAC265BC12P0.30 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- SPAC265-3W (3W)
- Package/Case:
- 4-SIP Module
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Enclosed
- Number of Outputs:
- 1
- Voltage - Input:
- 90 ~ 264 VAC
- Voltage - Output 1:
- 12V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 250mA
- Power (Watts):
- 3 W
- Applications:
- ITE (Commercial)
- Features:
- SCP
- Operating Temperature:
- -40°C ~ 85°C
- Efficiency:
- 80%
- Mounting Type:
- Through Hole
- Size / Dimension:
- 1.38" L x 0.79" W x 0.87" H (35.0mm x 20.0mm x 22.0mm)
- Approval Agency:
- CSA, EN, UL
- Standard Number:
- -
SPAC265BC12P0.30 FAQ
1.How can I place an order for SPAC265BC12P0.30 through Aetrix?
Please submit a Request for Quotation (RFQ) for SPAC265BC12P0.30 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SPAC265BC12P0.30 reliable?
The price and inventory of SPAC265BC12P0.30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SPAC265BC12P0.30 is usually 5 days.
3.What payment methods are accepted for SPAC265BC12P0.30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SPAC265BC12P0.30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SPAC265BC12P0.30?
SPAC265BC12P0.30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SPAC265BC12P0.30 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SPAC265BC12P0.30?
For technical support, including SPAC265BC12P0.30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SPAC265BC12P0.30 requirements.
6.How does Aetrix verify that SPAC265BC12P0.30 is sourced from the original manufacturer or authorized distributors?
All SPAC265BC12P0.30 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SPAC265BC12P0.30 meets industry standards.
7.What is the process for return or replacement of SPAC265BC12P0.30?
All SPAC265BC12P0.30 units undergo pre-shipment inspection (PSI). If there is an issue with SPAC265BC12P0.30, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SPAC265BC12P0.30 part is unused and in its original packaging.
Return procedure for SPAC265BC12P0.30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SPAC265BC12P0.30 Tags
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IRM-01-5
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