◆ UBF VT Series - 110°C　Activation
 
◆Electrical Characteristics
 

Part No		Figure	lhold (A)	Itrip (A)	Vmax (V)	Imax (A)	Pd typ (W)	Max. (A)	Time-to-trip  (s)	R min (Ω)	R Max (Ω)	R1 Max  (Ω)
UBF	LT070	1	0.7	1.45	15	100	0.7	3.5	5.0	0.100	0.200	0.340
UBF	LT070S	2	0.7	1.45	15	100	0.7	3.5	5.0	0.100	0.200	0.340
UBF	LT100	1	1.0	2.50	24	100	0.9	5.0	7.0	0.070	0.130	0.260
UBF	LT100S	2	1.0	2.50	24	100	0.9	5.0	7.0	0.070	0.130	0.260
UBF	LT100SS	3	1.0	2.50	24	100	0.9	5.0	7.0	0.070	0.130	0.260
UBF	LT180	1	1.8	3.80	24	100	1.0	9.0	2.9	0.040	0.068	0.120
UBF	LT180S	2	1.8	3.80	24	100	1.0	9.0	2.9	0.040	0.068	0.120
UBF	LT190	1	1.9	4.20	24	100	1.9	10.0	3.0	0.030	0.057	0.100
UBF	LT260	1	2.6	5.20	24	100	1.3	13.0	5.0	0.025	0.042	0.076
UBF	LT300	1	3.0	6.30	24	100	1.7	15.0	4.0	0.015	0.031	0.055
UBF	LT340	1	3.4	6.80	24	100	1.6	17.0	5.0	0.016	0.027	0.050

 
 
◆Comment
 

Ihold	Hold current is the maximum current that UB Fuse can pass through without interruption at 20°C unless otherwise specified.
Itrip	Trip current is the minimum current that will switch the device from low resistance state to high resistance state at 20°C unless specified.
Vmax	The maximum voltage device can withstand without damage at rated current.
Imax	The maximum current device can withstand without damage at rated voltage.
Pd	The power dissipated from device when in the tripped state at 20°C unless otherwise specified.
R min	The minimum resistance of device as received from the factory at 20°C unless otherwise specified.
R max	The maximum resistance of device as received from the factory at 20°C unless otherwise specified.
R1max	The maximum resistance of device when measured one hour post trip at 20°C unless otherwise specified.
Max. Time-to-trip	The maximum time for device to trip at specified current ratings at 20°C unless otherwise specified.

 
 
◆ Environmental Characteristics
 

Test	Test Conditions	Resistance Change
Passive Aging	+70°C, 1000 hours	±10% typical resistance change
Humidity Aging	+85°C, 85% R.H., 7 days	±15% typical resistance change
Thermal Shock	+85°C to -40°C, 10 times MIL-STD-202, Method 107G	±+5% typical resistance change
Vibration	MIL-STD-883C, Condition A	No change

 
 
◆Dimensions
 

	A		B		C		D		E		F
Part No	Min.	Max.	Min.	Max.	Min.	Max.	Min.	Max.	Min.	Max.	Min.	Max.
UBF LT070	19.9	22.1	0.7	1.2	4.9	5.2	5.5	7.5	5.5	7.5	3.9	4.1
UBF LT070S	19.9	22.1	0.7	1.2	4.9	5.2	5.5	7.5	5.5	7.5	3.9	4.1
UBF LT100	20.9	23.1	0.6	1.0	4.9	5.2	4.1	5.5	4.1	5.5	3.9	4.1
UBF LT100S	20.9	23.1	0.6	1.0	4.9	5.2	4.1	5.5	4.1	5.5	3.9	4.1
UBF LT100SS	20.9	23.1	0.6	1.0	4.9	5.2	4.1	5.5	4.1	5.5	3.9	4.1
UBF LT180	24.0	26.0	0.6	1.0	4.9	5.2	4.1	5.5	4.1	5.5	3.9	4.1
UBF LT180S	24.0	26.0	0.6	1.0	4.9	5.2	4.1	5.5	4.1	5.5	3.9	4.1
UBF LT190	21.3	23.4	0.5	1.1	10.2	11.0	5.0	7.6	5.0	7.6	4.8	5.4
UBF LT260	24.0	26.0	0.6	1.0	10.8	11.9	5.0	7.0	5.0	7.0	5.9	6.1
UBF LT300	28.4	31.8	0.5	1.1	13.0	13.5	6.3	8.9	6.3	8.9	6.0	6.6
UBF LT340	24.0	26.0	0.6	1.0	14.8	15.9	4.0	5.0	4.0	5.0	5.9	6.1

 
 
 
●NOTE:

All drawings are not in scale and layout may vary.
All parts dimension is in millimeter unless otherwise specified.
Terminal material is quarter hard Nickel with nominal thickness 0.125mm.
Tape material is Polyester.
All terminal’s slit dimension is 0.5x4.0mm.
Rounded corner terminals are available upon customer request.
All part numbers are available without wrapping upon customer request.                     
 
●Packaging: 1000 pcs per bag (UBFLT070 to UBFLT180S)
            500 pcs per bag (UBFLT190 to UBFLT340)
 
●Agency Approval:
 

UL File Number	E 119550
c-UL File Number	E 119550
TUV File Number	Pending

 
 
◆Typical Thermal Derating Chart - Ihold (A)
 

Part No	-40	-20	0	20	40	60	85
UBF LT070	1.1	1.0	0.8	0.7	0.5	0.3	0.1
UBF LT070S	1.1	1.0	0.8	0.7	0.5	0.3	0.1
UBF LT100	1.8	1.6	1.4	1.0	0.8	0.6	0.2
UBF LT100S	1.8	1.6	1.4	1.0	0.8	0.6	0.2
UBF LT100SS	1.8	1.6	1.4	1.0	0.8	0.6	0.2
UBF LT180	3.1	2.6	2.2	1.8	1.3	0.9	0.3
UBF LT180S	3.1	2.6	2.2	1.8	1.3	0.9	0.3
UBF LT190	3.3	2.8	2.4	1.9	1.4	1.1	0.4
UBF LT260	4.3	3.7	3.1	2.6	1.9	1.4	0.6
UBF LT300	5.1	4.4	3.7	3.0	2.3	1.6	0.7
UBF LT340	5.5	4.7	4.0	3.4	2.6	1.9	0.9

 
 

 
 
 
 
 
◆Typical Time To Trip Curve at 23°C