SQM48T25018-NBB0  Isolated DC-DC Converters

Function

The SQM48T25018-NBB0 is a high-performance 48V DC/DC power module designed to deliver stable,

 efficient power conversion. It typically converts an input voltage (e.g., 48V) to a regulated lower output voltage (e.g., 18V) with high efficiency, 

making it suitable for industrial and telecom applications.

Key Features

• Input Voltage: 48V nominal (wide range possible, e.g., 36–75V).

• Output Voltage: Likely 18V (adjustable variants may exist).

• High Efficiency: Optimized for minimal energy loss (e.g., >95%).

• Power Rating: Estimated 250W (subject to datasheet confirmation).

• Protections: Overcurrent (OCP), overvoltage (OVP), and thermal shutdown.

• Compact Design: Industry-standard package (e.g., quarter-brick or half-brick).

• Cooling: May include baseplate cooling or forced-air options.

Typical Applications

1. Telecommunications: Power supply for base stations, routers, or optical networks.

2. Industrial Systems: Automation controllers, motor drives, and robotics.

3. Renewable Energy: Intermediate conversion in solar/wind power systems.

4. Data Centers: Distributed power architecture for servers/GPUs.

Compliance & Reliability

• Meets industry standards (e.g., UL/IEC/EN 62368).

• Operating temperature range: -40°C to +85°C (industrial grade).

For exact specifications, refer to the datasheet (model number may vary by manufacturer).

Similar Models to SQM48T25018-NBB0

1. SQM48T25018-NBB0G

   • Manufacturer: Power-One

   • Input Voltage: 36V–75V (48V nominal)

   • Output: 1.8V @ 25A (45W)

   • Isolation Voltage: 2250V

   • Package: 1/8 Brick (58.4mm × 22.8mm × 9.1mm)

   • Features: Remote On/Off, OCP, OVP, UVLO

   • Efficiency: ~83%

   • Mounting: Through-hole.

2. SQM48T25015-PDB0

   • Output: 1.5V @ 25A (38W)

   • Isolation: 2000V

   • Efficiency: 81.5%

   • Package: 1/8 Brick (same dimensions as NBB0)

   • Features: Similar protections (OCP, OVP, etc.)

3. SQM48T20015-NDB0

   • Output: 1.5V @ 20A (30W)

   • Efficiency: 84.5%

   • Package: 1/8 Brick

   • Other specs: Matches NBB0's input range and protections

4. SQ48T15018-NBB0

   • Output: 1.8V @ 15A (27W)

   • Isolation: 2000V

   • Package: 1/8 Brick (slightly thinner: 8.6mm height)

   • Series: SQ48 (different lineage but similar design)

5. Q48T25018-NBB0

   • Output: 1.8V @ 25A (45W)

   • Package: Larger 1/4 Brick (58.4mm × 36.8mm × 8.6mm)

   • Input Range: Same 36V–75V

   • Isolation: Not specified (likely non-isolated)

6. SSQE48T25018-NABNG (Bel Power Solutions)

   • Output: 1.8V @ 25A (45W)

   • Package: Compact 1/16 Brick

   • Isolation: 2250V

   • Mounting: Through-hole.

Key Comparison Points

• Power & Current: Most variants offer 25A @ 1.8V (45W), but some lower-power models exist (e.g., 20A/15A).

• Isolation: Standard 2kV–2.25kV isolation in most models.

• Form Factor: Primarily 1/8 Brick, with exceptions like 1/4 Brick (Q48T) or 1/16 Brick (SSQE).

• Protections: Common features include OCP, OVP, UVLO, and remote on/off.

For detailed datasheets, refer to the manufacturer links (e.g., Power-One or Bel Power Solutions). 

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