RADIAL LEADED PTC 

-- BX/BU MODEL --

Agency Approvals: E175689
CUL & TUV PENDING
  Features  
  • Radial Leaded Devices being lower resistance, fast trip time and solid state
  • Operation current 750mA~2.5A
  • Maximum Voltage 16V
  • Temperature range -40 to 85
  • Cured, flame retardant epoxy polymer insulating material meets UL 94V-0 requirement
  • Bulk packaging, tape and reel available on most models
  Applications  

Almost anywhere there is a low voltage power supply and a load to be protected including:

  • Computers & peripherals
    USB hosts: desktop PC, notebook
    USB self-powered hubs: monitor, stand-alone hub
    USB bus- powered hubs: keyboard
    USB function: CCD camera, joystick, scanner
  Part Numbering system  

  ERF XX XXX XX X X
   |   |  |   | | |
   |   |  |   | | +-------- Special number:
   |   |  |   | |           0:Standard product
   |   |  |   | +------ Packing type:
   |   |  |   |         0.bulk
   |   |  |   |         1.tape packing
   |   |  |   |         2.tape & reel
   |   |  |   +----- Voltage rating: 16:16V
   |   |  +---- Current rating: 110:1.1A
   |   +-- Model:
   |       BX:Radial leaded devices, low resistance,
   |          fast trip time (Disc type)
   |       BU:Radial leaded devices, low resistance,
   |          fast trip time (Rectangle type)
   +-- Product Name: Resettable Fuse

  Marking system  

  Electrical characteristics (23 oC)  
Part
Number

Hold
Current

Trip
Current

Max.Time
to trip

Maxinum
Current

Rated
Voltage

Pd

Resistance Tolerance

RMIN

R1MAX

IH,A

IT,A

 at 8A at 5xIH

IMAX,A

VMAX,V

W

BX075

0.75

1.30

0.4

--

40

16

0.3

0.080

0.23

BX120

1.20

2.00

0.5

--

40

16

0.6

0.040

0.13

BX155

1.55

2.70

0.6

--

40

16

0.7

0.030

0.12

BU090

0.90

1.80

1.2

5.9

40

16

0.6

0.070

0.18

BU110

1.10

2.20

2.3

6.6

40

16

0.7

0.050

0.14

BU135

1.35

2.70

4.5

7.3

40

16

0.8

0.040

0.12

BU160

1.60

3.20

9.0

8.0

40

16

0.9

0.030

0.11

BU185

1.85

3.70

10.0

8.7

40

16

1.0

0.030

0.09

BU250

2.50

5.00

40.0

10.3

40

16

1.2

0.020

0.06
IH=Hold current-maximum current at which the device will not trip at 23 still air.
IT=Trip current-minimum current at which the device will always trip at 23 still air.
VMAX=Maximum voltage device can withstand without damage at rated current.
IMAX= Maximum fault current device can withstand without damage at rated voltage (V max).
Pd=Typical power dissipated from device when in the tripped state in 23 still air environment.
RMIN=Minimum device resistance at 23.
R1MAX=Maximum device resistance at 23 1 hour after tripping.
  Typical time-to-trip-at 23 oC  

  Thermal Derating Curve  

  BX/BU Product Dimensions (UNIT:mm)  

Part
Number

A

B

C

D

E

F

Figure

Maximum

Maximum

Typical

Minimum

Minimum

Typical

BX075

6.9

11.4

5.1

7.6

3.0

0.8

2

BX120

6.9

11.7

5.1

7.6

3.0

0.8

2

BX155

6.9

11.7

5.1

7.6

3.0

0.8

2

BU090

7.4

12.2

5.1

7.6

3.0

0.8

1

BU110

7.7

14.2

5.1

7.6

3.0

0.8

1

BU135

8.9

13.5

5.1

7.6

3.0

0.8

1

BU160

8.9

15.2

5.1

7.6

3.0

0.8

1

BU185

10.2

15.7

5.1

7.6

3.0

0.8

1

BU250

11.4

18.3

5.1

7.6

3.0

0.8

1