AC/DC Power Supplies

Cosel PBB7A-C SERIES AC/DC Power Supply

The Cosel PBB7A-C Series AC/DC Power Supply is a compact and efficient power solution for low-power PCB-mounted applications. With power outputs of 5W and voltage options of 5V, 12V, and 24V, this series offers dependable performance for industrial, medical, and electronic systems. Key features include a wide input voltage range (85–264VAC or 12...

Key features include a wide input voltage range (85–264VAC or 120–370VDC) for global compatibility and efficiency ratings of up to 83%, ensuring energy savings. The lightweight and compact design, measuring just 28.7 x 12.7 x 17.5 mm and weighing 15g, makes it ideal for space-constrained designs. The PBB7A-C Series operates reliably in extreme temperatures from -40°C to +85°C (with derating) and is equipped with essential safety features such as overcurrent and overvoltage protection. It adheres to rigorous safety and noise standards, including UL60950-1, C-UL, EN60950-1, FCC-B, VCCI-B, and CISPR-B, ensuring both safety and low electromagnetic interference.

This RoHS and ErP-compliant power supply reflects Cosel's commitment to sustainability and comes with a 5-year manufacturer’s warranty, offering reliability and peace of mind. The PBB7A-C Series is an excellent choice for engineers and system designers requiring efficient power delivery in a compact footprint.

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Features

5W AC/DC Module
PCB Mounting
Small Footprint
ErP compliant
Meets Class II
High efficiency
Wide operating temperature -40 to 85C

Specifications

INPUT
Input Voltage	85 - 264Vac
Input Current	200Vac 0.35 typ (lo=100%)
Frequency	47-63Hz
Inrush current	Limited by external components
Leakage current mA	0.40/0.75mA max. (ACIN 100V/240V, 60Hz, lo=100%, according to IEC60950-1)

OUTPUT
Output Voltage	5Vdc, 12Vdc, 24Vdc
Power	5W
Output Current	See selection table
Line regulation	5V: 20mV max 12V: 48mV max 24V: 96mV max
Load regulation	5V: 40mV max 12V: 100mV max 24V: 150mV max
Ripple	For 30% - 100% Load 5V: 120mVp-p max 12V: 160mVp-p max 24V: 200mVp-p max
Temperature Regulation	For 0 to +85°C 5V: 100mV max 12V: 180 max 24V: 360 max
Voltage Setting V	5V: 4.90-5.30 12V: 13.11.40-12.60 24V: 23.00-25.00
Efficiency	82% Typical

PROTECTION
Overcurrent Protection	Works over 105% of rating and recover automatically
Overvoltage Protection	5V: 5.50 - 8.00 12V: 13.20 - 19.20 24V: 26.40 - 38.40

PROTECTION

Overcurrent Protection

Works over 105% of rating and recover automatically

Overvoltage Protection

5V: 5.50 - 8.00

12V: 13.20 - 19.20

24V: 26.40 - 38.40

ENVIRONMENTAL
Operating temperature	-40 to +85°C
Cooling	Convection/forced air
Humidity	20%-95%RH non condensing
Altitude	3,000m (10,000 feet) max

STANDARDS AND APPROVALS
General	UL60950-1, C-UL (CSA60950-1), EN60950-1
Conducted Noise	FCC-B,VCCI-B,CISPR-B,EN55022-B
Harmonic Attenuator	IEC61000-3-2 (Class A)

MECHANICAL
Dimensions	28.7 x 12.7 x 17.5mm
Weight	15g

Selection Table

MODEL NUMBER	OUTPUT VOLTAGE	OUTPUT CURRENT	POWER
PBB7A-5C	5V	1A	5W
PBB7A-12C	12V	0.45A	5W
PBB7A-24C	24V	0.22A	5W

Technical Drawings

Technical drawing of a widget with measurements.

Downloads

PBB7A-C.pdf

Warranty & Returns

Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.

FAQs

What is the Cosel PBB7A-C Series?

The PBB7A-C is a compact PCB-mounted AC/DC power module in the Cosel PBB7A family, rated at 5W, designed for direct PCB integration.

What makes the PBB7A-C ErP compliant?

It is designed to comply with the EU's Energy-related Products (ErP) directive requirements for standby and no-load power consumption, making it suitable for products sold in the European market.

What operating temperature range does the PBB7A-C support?

It operates from -40°C to +85°C, making it one of the widest operating temperature range options in the Cosel compact module range.

What input voltage does the PBB7A-C accept, and is DC bus input supported?

The PBB7A-C accepts 85–264Vac (47–63Hz) with no manual switching, and 120–370Vdc bus input — the same input range as the PBB7A-B, D, and G variants. Input current is 0.06A typical at 200Vac full load. Input-to-output isolation is 3,000Vac.

What hold-up time flexibility does the PBB7A-C provide?

The design allows flexibility in configuring hold-up time and expected service life, giving OEM designers options to optimise system behaviour during mains interruptions.

What safety and EMC certifications does the PBB7A-C hold?

Safety: UL60950-1, C-UL (CSA60950-1), EN60950-1. EMC: FCC Part 15 Class B, VCCI Class B, CISPR22 Class B, EN55022 Class B. RoHS and ErP compliant. Class II construction — no protective earth (PE) connection required. 5-year Cosel manufacturer's warranty. Complies with IEC61000-3-2 harmonic current standards.

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