Products
Isolated Type DCDC converters
Our isolated type DCDC converters are ultra small, low noise, high isolation and have a wide range of operating temperatures.
Our Isolated Type DC‐DC converter BR‐LB Series, applying TCT circuit, achieves low noise of 3mVpp and is employed in ATS (Automatic Train Stop) devices.
Ultra low noise isolated type DC‐DC converter "BL series"
Low output ripple noise DC‐DC converters are required for analog circuits of measuring equipment, analyzers, diagnostic imaging equipment and the like.
We have BL series isolated type DC‐DC converters available for these applications. The BL series have satisfied both low ripple noise and high efficiency output by adopting a resonant circuit.
Features
 Ultra low ripple noise : 5mVp‐p
 Isolation voltage : AC500V
 Wide range of input voltage
 Reducing LDO loss
 Small mounting space
 Metallic shield case
Model Number  Input Voltage  Output Voltage  Output Current  Power  Number of Output  Package Type  Withstand voltage  Ripple Noise  Efficiency  Size (mm) 
Datasheet  Purchase (Distributors) 

3 to 9V  5V  0 to 300mA  1.5W    SMD  AC500V  5mVpp  80%  20.3x14.0x9.7 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BLA0505S30  
3 to 9V  12(15)V  0 to 125(100)mA  1.5W    SMD  AC500V  5mVpp  82%  20.3x14.0x9.7 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BLA0512S12  
3 to 9V  0.8 to 1.8V  0 to 60(50)mA  1.5W    SMD  AC500V  5mVpp  82%  20.3x14.0x9.7 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BLA0512W06  
9 to 18V  5V  0 to 300mA  1.5W    SMD  AC500V  5mVpp  78%  20.3x14.0x9.7 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BLA1205S30  
9 to 18V  12(15)V  0 to 125(100)mA  1.5W    SMD  AC500V  5mVpp  81%  20.3x14.0x9.7 

[DigiKey]
[CoreStaff] [CoreStaff] 

BLA1212S12  
9 to 18V  ±12(±15)V  0 to 60(50)mA  1.5W    SMD  AC500V  5mVpp  82%  20.3x14.0x9.7 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BLA1212W06  
4.5 to 9V  5V  0 to 1000mA  5W    SMD  AC500V  8mVpp  77%  23.2x21.1x10.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BLC0505S100  
4.5 to 9V  12(15)V  0 to 500(400)mA  6W    SMD  AC500V  8mVpp  80%  23.2x21.1x10.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BLC0512S50  
4.5 to 9V  ±12(±15)V  0 to 500(400)mA  6W    SMD  AC500V  8mVpp  80%  23.2x21.1x10.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BLC0512W25  
9 to 18V  5V  0 to 1200mA  6W    SMD  AC500V  8mVpp  80%  23.2x21.1x10.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BLC1205S120  
9 to 18V  12(15)V  0 to 500(400)mA  6W    SMD  AC500V  8mVpp  83%  23.2x21.1x10.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BLC1212S50  
9 to 18V  ±12(±15)V  0 to 60(50)mA  6W    SMD  AC500V  8mVpp  83%  23.2x21.1x10.0 

[DigiKey]
[ChipOneStop] 

BLC1212W25  
4.75 to 6V  5V  0 to 300mA  1.5W    DIP  DC500V  10mVpp  55%  32.6x20.42x10.3 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BY0505S30L  
4.75 to 6V  12V  0 to 120mA  1.5W    DIP  DC500V  10mVpp  60%  32.6x20.42x10.3 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BY0512S12L  
4.75 to 6V  15V  0 to 100mA  1.5W    DIP  DC500V  10mVpp  60%  32.6x20.42x10.3 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BY0515S10L  
4.75 to 6V  ±5V  0 to 80mA  1.5W    DIP  DC500V  8mVpp  45%  32.6x20.42x10.3 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BY0505W08L  
4.75 to 6V  ±12V  0 to 65mA  1.5W    DIP  DC500V  8mVpp  60%  32.6x20.42x10.3 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BY0512W06L  
4.75 to 6V  ±15V  0 to 53mA  1.5W    DIP  DC500V  8mVpp  60%  32.6x20.42x10.3 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BY0515W05L  
4.75 to 6V  ±15V  0 to 70mA  2W    DIP  DC500V  8mVpp  60%  49x20x9.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BX0515W07L  
4.75 to 6V  ±12V    5W    DIP  DC500V  3mVpp  64%  51.3x51.3x9.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BR051220LB  
4.75 to 6V  ±12V    5W    DIP  DC500V  3mVpp  64%  51.3x51.3x9.8 

[DigiKey]
[ChipOneStop] 

BR051225LB  
4.75 to 6V  ±15V    5W    DIP  DC500V  3mVpp  64%  51.3x51.3x9.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BR051516LB  
4.75 to 6V  ±15V    5W    DIP  DC500V  3mVpp  64%  51.3x51.3x9.8 

[DigiKey]
[ChipOneStop] 

BR051520LB  
4.75 to 6V  5V  0 to 600mA  3W    DIP  DC500V  25mVpp  60%  51.3x51.3x9.8 

[ChipOneStop]


BR0505S60  
4.75 to 6V  12V  0 to 380mA  4.5W    DIP  DC500V  25mVpp  60%  51.3x51.3x9.8 

[ChipOneStop]
[CoreStaff] 

BR0512S38  
4.75 to 6V  15V  0 to 300mA  4.5W    DIP  DC500V  25mVpp  60%  51.3x51.3x9.8 

[ChipOneStop]


BR0515S30  
4.5 to 9V  3.3V  0 to 400mA  1.5W    DIP  AC500V  40mVpp  71%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA0503S40D  
4.5 to 9V  3.3V  0 to 400mA  1.5W    SMD  AC500V  40mVpp  71%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA0503S40S  
4.5 to 9V  5V  0 to 300mA  1.5W    DIP  AC500V  40mVpp  77%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA0505S30D  
4.5 to 9V  5V  0 to 300mA  1.5W    SMD  AC500V  40mVpp  77%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA0505S30S  
4.5 to 9V  12(15)V  0 to 125(100)mA  1.5W    DIP  AC500V  30mVpp  80%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA0512S12D  
4.5 to 9V  12(15)V  0 to 125(100)mA  1.5W    SMD  AC500V  30mVpp  80%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA0512S12S  
4.5 to 9V  ±12(±15)V  0 to 60(50)mA  1.5W    DIP  AC500V  30mVpp  79%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA0512W06D  
4.5 to 9V  ±12(±15)V  0 to 60(50)mA  1.5W    SMD  AC500V  30mVpp  79%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA0512W06S  
9 to 18V  3.3V  0 to 400mA  1.5W    DIP  AC500C  40mVpp  73%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA1203S40D  
9 to 18V  3.3V  0 to 400mA  1.5W    SMD  AC500V  40mVpp  73%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA1203S40S  
9 to 18V  5V  0 to 300mA  1.5W    DIP  AC500V  40mVpp  78%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA1205S30D  
9 to 18V  5V  0 to 300mA  1.5W    SMD  AC500V  40mVpp  78%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA1205S30S  
9 to 18V  12(15)V  0 to 125(100)mA  1.5W    DIP  AC500V  30mVpp  82%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA1212S12D  
9 to 18V  12(15)V  0 to 125(100)mA  1.5W    SMD  AC500V  30mVpp  82%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA1212S12S  
9 to 18V  ±12(±15)V  0 to 60(50)mA  1.5W    DIP  AC500V  30mVpp  81%  17.3x17.1x12 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA1212W06D  
9 to 18V  ±12(±15)V  0 to 60(50)mA  1.5W    SMD  AC500V  30mVpp  81%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA1212W06S  
18 to 36V  3.3V  0 to 400mA  1.5W    DIP  AC500V  40mVpp  72%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA2403S40D  
18 to 36V  3.3V  0 to 400mA  1.5W    SMD  AC500V  40mVpp  72%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA2403S40S  
18 to 36V  5V  0 to 300mA  1.5W    DIP  AC500V  40mVpp  77%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA2405S30D  
18 to 36V  5V  0 to 300mA  1.5W    SMD  AC500V  40mVpp  77%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA2405S30S  
18 to 36V  12(15)V  0 to 125(100)mA  1.5W    DIP  AC500V  30mVpp  81%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] 

BTA2412S12D  
18 to 36V  12(15)V  0 to 125(100)mA  1.5W    SMD  AC500V  30mVpp  81%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA2412S12S  
18 to 36V  ±12(±15)V  0 to 60(50)mA  1.5W    DIP  AC500V  30mVpp  79%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA2412W06D  
18 to 36V  ±12(±15)V  0 to 60(50)mA  1.5W    SMD  AC500V  30mVpp  79%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA2412W06S  
36 to 76V  3.3V  0 to 400mA  1.5W    DIP  AC500V  40mVpp  70%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA4803S40D  
36 to 76V  3.3V  0 to 400mA  1.5W    SMD  AC500V  40mVpp  70%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA4803S40S  
36 to 76V  5V  0 to 300mA  1.5W    DIP  AC500V  40mVpp  75%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA4805S30D  
36 to 76V  5V  0 to 300mA  1.5W    SMD  AC500V  40mVpp  75%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA4805S30S  
18 to 36V  12(15)V  0 to 125(100)mA  1.5W    DIP  AC500V  30mVpp  80%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA4812S12D  
18 to 36V  12(15)V  0 to 125(100)mA  1.5W    SMD  AC500V  30mVpp  80%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA4812S12S  
36 to 76V  ±12(±15)V  0 to 60(50)mA  1.5W    DIP  AC500V  30mVpp  79%  17.3x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA4812W06D  
36 to 76V  ±12(±15)V  0 to 60(50)mA  1.5W    SMD  AC500V  30mVpp  79%  17.3x17.1x8.5 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTA4812W06S  
4.5 to 9V  3.3V  0 to 800mA  3W    DIP  AC500V  40mVpp  73%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB0503S80D  
4.5 to 9V  3.3V  0 to 800mA  3W    SMD  AC500V  40mVpp  73%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB0503S80S  
4.5 to 9V  5V  0 to 600mA  3W    DIP  AC500V  40mVpp  77%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB0505S60D  
4.5 to 9V  5V  0 to 600mA  3W    SMD  AC500V  40mVpp  77%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB0505S60S  
4.5 to 9V  12(15)V  0 to 250(200)mA  3W    DIP  AC500V  30mVpp  82%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB0512S25D  
4.5 to 9V  12(15)V  0 to 250(200)mA  3W    SMD  AC500V  30mVpp  82%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB0512S25S  
4.5 to 9V  ±12(±15)V  0 to 125(100)mA  3W    DIP  AC500V  30mVpp  80%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB0512W12D  
4.5 to 9V  ±12(±15)V  0 to 125(100)mA  3W    SMD  AC500V  30mVpp  80%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB0512W12S  
9 to 18V  3.3V  0 to 800mA  3W    DIP  AC500V  40mVpp  74%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB1203S80D  
9 to 18V  3.3V  0 to 800mA  3W    SMD  AC500V  40mVpp  74%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB1203S80S  
9 to 18V  5V  0 to 600mA  3W    DIP  AC500V  40mVpp  76%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB1205S60D  
9 to 18V  5V  0 to 600mA  3W    SMD  AC500V  40mVpp  79%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB1205S60S  
9 to 18V  12(15)V  0 to 250(200)mA  3W    DIP  AC500V  30mVpp  82%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB1212S25D  
9 to 18V  12(15)V  0 to 250(200)mA  3W    SMD  AC500V  30mVpp  82%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB1212S25S  
9 to 18V  ±12(±15)V  0 to 125(100)mA  3W    DIP  AC500V  30mVpp  81%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB1212W12D  
9 to 18V  ±12(±15)V  0 to 125(100)mA  3W    SMD  AC500V  30mVpp  81%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB1212W12S  
18 to 36V  3.3V  0 to 800mA  3W    DIP  AC500V  40mVpp  73%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB2403S80D  
18 to 36V  3.3V  0 to 800mA  3W    SMD  AC500V  40mVpp  73%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB2403S80S  
18 to 36V  5V  0 to 600mA  3W    DIP  AC500V  40mVpp  78%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB2405S60D  
18 to 36V  5V  0 to 600mA  3W    SMD  AC500V  40mVpp  78%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB2405S60S  
18 to 36V  12(15)V  0 to 250(200)mA  3W    DIP  AC500V  30mVpp  82%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB2412S25D  
18 to 36V  12(15)V  0 to 250(200)mA  3W    SMD  AC500V  30mVpp  82%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB2412S25S  
18 to 36V  ±12(±15)V  0 to 125(100)mA  3W    DIP  AC500V  30mVpp  81%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB2412W12D  
18 to 36V  ±12(±15)V  0 to 125(100)mA  3W    SMD  AC500V  30mVpp  81%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB2412W12S  
36 to 76V  3.3V  0 to 800mA  3W    DIP  AC500V  40mVpp  73%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB4803S80D  
36 to 76V  3.3V  0 to 800mA  3W    SMD  AC500V  40mVpp  73%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB4803S80S  
36 to 76V  5V  0 to 600mA  3W    DIP  AC500V  40mVpp  79%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB4805S60D  
36 to 76V  5V  0 to 600mA  3W    SMD  AC500V  40mVpp  79%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB4805S60S  
36 to 76V  12(15)V  0 to 250(200)mA  3W    DIP  AC500V  30mVpp  81%  23.7x17.1x12.0 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB4812S25D  
36 to 76V  12(15)V  0 to 250(200)mA  3W    SMD  AC500V  30mVpp  81%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB4812S25S  
36 to 76V  ±12(±15)V  0 to 125(100)mA  3W    DIP  AC500V  30mVpp  80%  23.7x17.1x12 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB4812W12D  
36 to 76V  ±12(±15)V  0 to 125(100)mA  3W    SMD  AC500V  30mVpp  80%  23.7x17.1x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTB4812W12S  
4.5 to 9V  3.3V  0 to 1200mA  6W    DIP  AC500V  40mVpp  76%  23.7x21.6x12 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTC0503S120D  
4.5 to 9V  3.3V  0 to 1200mA  6W    SMD  AC500V  40mVpp  76%  23.7x21.6x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTC0503S120S  
4.5 to 9V  5V  0 to 1000mA  6W    DIP  AC500V  40mVpp  79%  23.7x21.6x12 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTC0505S100D  
4.5 to 9V  5V  0 to 1000mA  6W    SMD  AC500V  40mVpp  79%  23.7x21.6x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTC0505S100S  
4.5 to 9V  12(15)V  0 to 500(400)mA  6W    DIP  AC500V  30mVpp  82%  23.7x21.6x12 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTC0512S50D  
4.5 to 9V  12(15)V  0 to 500(400)mA  6W    SMD  AC500V  30mVpp  82%  23.7x21.6x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTC0512S50S  
4.5 to 9V  ±12(±15)V  0 to 250(200)mA  6W    DIP  AC500V  30mVpp  82%  23.7x21.6x12 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTC0512W25D  
4.5 to 9V  ±12(±15)V  0 to 250(200)mA  6W    SMD  AC500V  30mVpp  82%  23.7x21.6x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTC0512W25S  
9 to 18V  3.3V  0 to 1200mA  6W    DIP  AC500V  40mVpp  78%  23.7x21.6x12 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTC1203S120D  
9 to 18V  3.3V  0 to 1200mA  6W    SMD  AC500V  40mVpp  78%  23.7x21.6x8.8 

[DigiKey]
[ChipOneStop] [CoreStaff] 

BTC1203S120S 