RMR-007 Series

  • Small-sized isolation transformer
  • SMD surface mount installation
  • Isolation voltage: 1500VDC/1minute
  • Operating temperature: -40~125°C
  • Maximum product dimensions: 8.1mm × 6.8mm × 3.8mm
  Part Number Isolation (kV) Mounting Type Topology Primary Inductance (µH) WindingTurnsRatio
1 RECOM | RMR-007-A55S-CT | TRANSFORMER, SMD
Focus New
1.5 SMD Push-Pull 82 1:1.14
2 RECOM | RMR-007-A55S-R | TRANSFORMER, SMD
Focus New
1.5 SMD Push-Pull 82 1:1.14

Solutions based on this IC/Transformer combination (available board mounted or as individual components)

  Part Number Power (W) Isolation (kV) Vin (V) Main Vout (V) Primary IC Transformer Secondary IC
1
New
2 1.5 5 5
Attributes RMR-007
Product Category TRANSFORMER
Isolation Isolated
Vin (V) 5
Main Vout (V) 5
MAX Iout (mA) 400
Isolation (kV) 1.5
Mounting Type SMD
Package Style 8.1x6.8x3.8
Length (mm) 8.1
Width (mm) 6.8
Height (mm) 3.8
MIN Operating Temp (°C) -40
MAX Operating Temp (°C) 125
Directives Halogen-free, REACH, RoHS 2+ (10/10)
Warranty 1 Year
Config 1 Primary CT 1 Secondary CT
Topology Push-Pull
MIN Storage Temperature (°C) -40
MAX Storage Temperature (°C) 40
Primary Winding Single
Secondary Winding Single
Primary Inductance (µH) 82
Volt µs Rating (V/µs) 8.5
MAX Primary DCR (Ω) 0.22
MAX Secondary DCR (Ω) 0.25
WindingTurnsRatio 1:1.14
Center Tap Yes
  Part Number Power (W) Vout 1 (V) Vin (V) Mounting Type
1 RECOM | RMR-007-A55S-CT | TRANSFORMER, SMD
Focus New
5 5 SMD
2 RECOM | RMR-007-A55S-R | TRANSFORMER, SMD
Focus New
5 5 SMD

Documents & Media

Title Type Date
RMR-007.pdf Datasheet
Efficiency can be improved by selecting low-loss components, optimizing switching frequency, and using synchronous rectification.
Common topologies include buck, boost, buck‑boost, flyback, forward, half‑bridge, and full‑bridge converters.
Typical components include a controller IC (with or without integrated switches), inductors or transformers, rectifiers, and capacitors. For regulated outputs, some form of feedback circuitry is also required to maintain a stable voltage.
A discrete power supply uses individual components such as controllers, switching transistors, transformers, inductors, and capacitors to build a converter. This approach offers maximum flexibility, allowing engineers to hand-pick each part to optimize for specific performance goals like thermal management, high power density, or low cost.
Typical protection functions include overcurrent protection, overvoltage or undervoltage protection, thermal shutdown, and short‑circuit protection.
Discrete designs are preferred when high flexibility, custom layout, performance optimization, or cost advantages at high volumes are required.