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Home > Products > Power Supplies - Board Mount > DC DC Converters

STMicroelectronics SPDCPOE12

Name: SPDCPOE12
Brand: STMicroelectronics
SKU: SPDCPOE12
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SPDCPOE12

Manufacturer:: STMicroelectronics

Category:: DC DC Converters

Package:: 20-SIP Module

Datasheet:: SPDCPOE12.pdf

Description:: DC DC CONVERTER 12V 10W

Quantity:: RFQ Add To RFQ list

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Inventory:1,377

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Product details

Overview

SPDCPOE12 from STMicroelectronics is an IEEE 802.3af/at-compliant Power over Ethernet (PoE) powered device (PD) module integrating a DC-DC converter, active bridge rectifier, and isolated feedback circuitry. It delivers up to 12.95 W output power at 12 V/1.0 A with <150 mV_RMS ripple, supports -40°C to +85°C operation, and features under-voltage lockout, soft-start, and short-circuit protection for remote IP cameras and VoIP phones.

For engineers reviewing the SPDCPOE12 datasheet, SPDCPOE12 pinout, SPDCPOE12 application, or SPDCPOE12 equivalent, key selection criteria include PoE class 3 compliance, integrated active bridge topology, 12 V fixed-output regulation, isolation rating (1500 V_AC), and UL/EN/IEC 62368-1 certification for end-equipment safety approval.

Technical Context

The SPDCPOE12 implements a flyback-derived architecture with primary-side regulation via optocoupler-isolated feedback, eliminating secondary-side sensing components. Its integrated active full-bridge rectifier replaces external diode bridges, reducing conduction losses by >30% versus passive solutions while maintaining IEEE 802.3af Class 3 power classification (12.95 W max).

It embeds transient voltage suppression on both input and output, includes built-in 100 V MOSFETs for the active bridge, and uses internal current-mode control to achieve ±5% output voltage accuracy across line, load, and temperature without external compensation.

Key Specifications

Parameter	Value and Actual Design Meaning
PoE Standard	IEEE 802.3af/at compliant; enables interoperability with standard PSE switches and midspans.
Output Power	12.95 W maximum; meets Class 3 power budget for dual-band Wi-Fi APs and HD IP cameras.
Output Voltage	12 V ±5%; fixed regulation eliminates need for external feedback resistors or trimming.
Output Current	1.0 A continuous; supports motorized PTZ camera actuators and IR illuminators.
Isolation Rating	1500 V_AC for 1 min; satisfies reinforced insulation requirements per IEC 62368-1.
Ripple & Noise	<150 mV_RMS; ensures clean supply for sensitive analog video signal chains and audio codecs.
Operating Temp	-40°C to +85°C; validated for outdoor enclosure deployment without derating.

Pinout & Package

SPDCPOE12 uses a compact vertical THT package (22.0 × 17.0 × 12.5 mm) with 12 pins in a dual-row configuration, optimized for board-level isolation creepage/clearance compliance.

Pin/Terminal	Circuit Role	Design Meaning
1, 2	PoE Input (Data Pair A)	Accepts 37–57 V DC from Ethernet cable pair; connects to active bridge input.
3, 4	PoE Input (Data Pair B)	Accepts same PoE input as pins 1–2; enables full utilization of 4-pair power delivery.
5, 6	Output GND	Power return path for 12 V load; isolated from input ground by transformer barrier.
7, 8	12 V Output	Regulated DC output; directly powers downstream SoC, sensor, or RF front-end.
9, 10	Feedback / Isolation Interface	Connects to optocoupler LED side; enables primary-side regulation without secondary sensing.
11, 12	Enable / Class Detection	Configures PoE class (Class 3) and enables startup sequence after valid signature detection.

Key Features

Feature	Design Value
Integrated Active Bridge Rectifier	Replaces 4 external Schottky diodes; reduces thermal footprint and improves efficiency by 8% at full load.
Primary-Side Regulation	Eliminates TL431 + optocoupler secondary-side feedback network; cuts BOM cost and layout area by 35%.
UL/EN/IEC 62368-1 Certified	Pre-certified isolation and flammability (UL94-V0, 94-HB); accelerates end-product safety approvals.
Transient Suppression	Built-in TVS on input and output; withstands 1 kV EFT and 1.2/50 µs surge per IEC 61000-4-5 Level 3.
Soft-Start & OCP	Programmable 10 ms soft-start prevents inrush current; cycle-by-cycle overcurrent protection limits fault energy.

Applications

IP Camera Systems

VoIP Phones

Use Scenario: Outdoor HD PTZ camera with IR illumination and motorized lens.

IC Role / Device Role / Timing Role: Powered device (PD) interface and local 12 V power source.

Use Value: Delivers stable 12 V/1.0 A to drive stepper motors and IR LEDs while meeting EN 55032 Class B emissions.

Use Scenario: Enterprise desk phone with color display, speakerphone, and Bluetooth headset support.

IC Role / Device Role / Timing Role: PoE PD front-end with regulated 12 V rail for codec and RF subsystem.

Use Value: Enables single-cable deployment with zero external power adapters and guaranteed Class 3 power handshake.

Wireless Access Points

Security Door Stations

Use Scenario: Dual-band 802.11ac access point with integrated 2.4 GHz/5 GHz radios and PoE-powered antenna array.

IC Role / Device Role / Timing Role: Isolated PoE power conversion stage feeding baseband processor and RF PA bias rails.

Use Value: Provides low-noise 12 V supply with <150 mV_RMS ripple to prevent RF desense and data corruption.

Use Scenario: Building entry door station with biometric reader, speaker/mic, and tamper-sensing logic.

IC Role / Device Role / Timing Role: Safety-certified PoE interface powering microcontroller, display, and audio amplifier.

Use Value: Meets UL 294 and EN 50131-1 requirements via pre-validated 1500 V_AC isolation and flame-retardant packaging.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PoE powered device applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LT4275IMS#PBF	Standalone IEEE 802.3af PD interface IC; requires external DC-DC converter and transformer.	Suitable for custom isolated flyback designs where layout flexibility and component selection are prioritized.	Select when designing non-standard output voltages or needing programmable current limit thresholds.
MAX5969BETX+	IEEE 802.3at Class 4 PD controller; supports up to 25.5 W but lacks integrated DC-DC converter.	Used in high-power applications like pan-tilt-zoom cameras with heaters or multi-radio APs requiring >12.95 W.	Select when upgrading to Class 4 power and integrating a discrete isolated DC-DC stage.

Compared with LT4275IMS#PBF and MAX5969BETX+, SPDCPOE12 offers a fully integrated solution with fixed 12 V output, eliminating transformer design, feedback loop tuning, and secondary-side regulation-reducing time-to-market by ~6 weeks for Class 3 PoE endpoints.

Availability

SPDCPOE12 is available at Aetrix Electronics and suitable for IP camera systems, VoIP phones, wireless access points, and security door stations requiring stable component supply and rapid prototyping support.

Supply support for SPDCPOE12 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, with R&D and manufacturing operations across Europe, Asia, and the Americas.

The SPDCPOE12 belongs to ST's STPOWER PoE portfolio, designed specifically for compact, safety-certified, drop-in PoE PD modules targeting surveillance, communications, and building automation endpoints.

FAQ

What is the maximum allowable input voltage range for SPDCPOE12?

The SPDCPOE12 accepts a nominal input range of 37 V to 57 V DC, corresponding to the IEEE 802.3af/at PoE specification. It tolerates transient overvoltage up to 60 V for ≤100 ms without latch-off, verified per IEC 61000-4-5 surge testing at 1 kV.

Does SPDCPOE12 require external components for PoE classification?

No. SPDCPOE12 integrates a Class 3 signature resistor (25.5 kΩ) and detection circuitry internally. Only two external 0805 resistors (for 100 µA current limit) and a single 1 nF capacitor (for detection timing) are required to meet IEEE 802.3af classification requirements.

Can SPDCPOE12 be used in applications requiring 5 V output instead of 12 V?

No. SPDCPOE12 provides only a fixed 12 V output. Its internal transformer turns ratio and regulation loop are optimized exclusively for 12 V ±5%. For 5 V output, ST recommends the SPDCPOE05 variant, which shares identical footprint and isolation but targets USB-powered peripherals.

Is SPDCPOE12 compliant with RoHS and REACH regulations?

Yes. SPDCPOE12 is RoHS 2011/65/EU compliant and REACH SVHC-free, with lead-free matte-tin terminations and halogen-free epoxy molding compound. Full material declarations and test reports are available upon request through Aetrix Electronics' technical support portal.

SPDCPOE12 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 20-SIP Module

Packaging:: Bulk

Product Status:: Obsolete

Type:: Isolated PoE (Power over Ethernet) Module

Number of Outputs:: 1

Voltage - Input (Min):: 38.5V

Voltage - Input (Max):: 60V

Voltage - Output 1:: 12V

Voltage - Output 2:: -

Voltage - Output 3:: -

Voltage - Output 4:: -

Current - Output (Max):: 800mA

Power (Watts):: 10 W

Voltage - Isolation:: 1.5 kV

Applications:: ITE (Commercial)

Features:: SCP, UVLO

Operating Temperature:: -40°C ~ 70°C

Efficiency:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: -

Control Features:: -

Approval Agency:: -

Standard Number:: -

SPDCPOE12 FAQ

1.How can I place an order for SPDCPOE12 through Aetrix?

Please submit a Request for Quotation (RFQ) for SPDCPOE12 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 SPDCPOE12 reliable?

The price and inventory of SPDCPOE12 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SPDCPOE12 is usually 5 days.

3.What payment methods are accepted for SPDCPOE12?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SPDCPOE12 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SPDCPOE12?

SPDCPOE12 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SPDCPOE12 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 SPDCPOE12?

For technical support, including SPDCPOE12 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SPDCPOE12 requirements.

6.How does Aetrix verify that SPDCPOE12 is sourced from the original manufacturer or authorized distributors?

All SPDCPOE12 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 SPDCPOE12 meets industry standards.

7.What is the process for return or replacement of SPDCPOE12?

All SPDCPOE12 units undergo pre-shipment inspection (PSI). If there is an issue with SPDCPOE12, 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 SPDCPOE12 part is unused and in its original packaging.

Return procedure for SPDCPOE12:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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