RADIAL LEADED PTC
BX/BU MODEL

E175689

50012736

FEATURES

  • Radial Leaded, lower resistance, fast trip time and solid state
  • Operation current: 750mA~2.5A
  • Maximum Voltage: 16V & 30V
  • 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 X
   |   |  |   | | | |
   |   |  |   | | | +--- Z:RoHS Compliant
   |   |  |   | | +--- Special number:
   |   |  |   | |      0:Standard product
   |   |  |   | +--- Packing type:
   |   |  |   |      0:bulk
   |   |  |   |      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 (23oC)

Part
Number

Hold
Current

Trip
Current

Max. Time
to trip

Maximum
Current

Rated
Voltage

Typical
Power

Resistance Tolerance

RMIN

R1MAX

IH, A

IT, A

at 8A

at 5xIH

IMAX, A

VMAX, Vdc

Pd, 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

0.14

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

16/30

0.6

0.070

0.18

BU110

1.10

2.20

2.3

6.6

40

16/30

0.7

0.050

0.14

BU135

1.35

2.70

4.5

7.3

40

16/30

0.8

0.040

0.12

BU160

1.60

3.20

9.0

8.0

40

16/30

0.9

0.030

0.11

BU185

1.85

3.70

10.0

8.7

40

16/30

1.0

0.030

0.09

BU250

2.50

5.00

40.0

10.3

40

16/30

1.2

0.020

0.07
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°C

Thermal Derating Curve

BX/BU Product Dimensions (UNIT:mm)

Part
Number

A

B

C

D

E

F

Figure

Maximum

Maximum

Typical

Minimum

Maximum

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

7.4

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

Note: Specifications subject to change without prior notice.