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POLYFUSE(R) Resettable PTCs
Axial Leaded Strap
VT Series
Description The new VT series device provides reliable, noncycling protection against overcharging and short circuits events for rechargeable battery cells where resettable protection is desired. Features * RoHS compliant and lead-free * Weldable nickel terminals * Slim, low profile design Applications * Rechargeable battery cell protection - Mobile phones - Laptop computers * Compact design saves board space * Low resistance
Agency Approvals
AGENCY AGENCY FILE NUMBER E183209 R50082521
Electrical Characteristics
I hold (A) 1.70 1.70 1.75 1.75 1.75 1.75 1.75 1.75 2.00 2.00 2.00 2.10 2.10 2.10 2.10 2.10 2.10 2.40 I trip (A) 3.40 3.40 3.80 3.80 3.80 3.80 3.60 3.60 4.50 4.50 4.70 4.70 4.70 4.70 4.70 4.70 4.70 5.40 V max (Vdc) 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 I max (A) 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 Pd max. (W) 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 Maximum Time To Trip Current (A) 8.50 8.50 9.00 9.00 9.00 8.75 8.75 8.75 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 10.00 12.00 Time (Sec.) 3.00 3.00 3.00 3.00 3.00 5.00 5.00 5.00 4.00 4.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 4.00 R min () 0.030 0.030 0.025 0.025 0.025 0.029 0.029 0.029 0.021 0.021 0.022 0.018 0.018 0.018 0.018 0.018 0.018 0.015 Resistance R typ () 0.052 0.052 0.045 0.045 0.045 0.051 0.051 0.051 0.039 0.039 0.039 0.030 0.030 0.030 0.030 0.035 0.035 0.026 R 1max () 0.105 0.105 0.090 0.090 0.090 0.102 0.102 0.102 0.080 0.080 0.076 0.060 0.060 0.060 0.060 0.065 0.065 0.052 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X Agency Approvals
Part Number
16VT170 16VT170XS 16VT175 16VT175S 16VT175L 16VT175XL 16VT175EL 16VT175NEL 16VT200 16VT200S 16VT200UL 16VT210 16VT210S 16VT210SS 16VT210L 16VT210NL 16VT210UL 16VT240
I hold = Hold current: maximum current device will pass without tripping in 20C still air. I trip = Trip current: minimum current at which the device will trip in 20C still air. V max = Maximum voltage device can withstand without damage at rated current (I max) I max = Maximum fault current device can withstand without damage at rated voltage (Vmax) P d = Power dissipated from device when in the tripped state at 20C still air. R min = Minimum resistance of device in initial (un-soldered) state. VT Series Specifications are subject to change without notice.
R typ = Typical resistance of device in initial (un-soldered) state. R 1max = Maximum resistance of device at 20C measured one hour after tripping or reflow soldering of 260C for 20 sec. Caution: Operation beyond the specified rating may result in damage and possible arcing and flame.
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Electronics Designers Guide
POLYFUSE(R) Resettable PTCs
Axial Leaded Strap
Temperature Rerating
Ambient Operation Temperature -40C Part Number 16VT170 16VT170XS 16VT175 16VT175S 16VT175L 16VT175XL 16VT175EL 16VT175NEL 16VT200 16VT200S 16VT200UL 16VT210 16VT210S 16VT210SS 16VT210L 16VT210NL 16VT210UL 16VT240 3.20 3.20 3.20 3.20 3.20 3.20 3.20 3.20 3.70 3.70 3.70 4.10 4.10 4.10 4.10 4.10 4.10 4.40 2.70 2.70 2.70 2.70 2.70 2.70 2.70 2.70 3.20 3.20 3.20 3.50 3.50 3.50 3.50 3.50 3.50 3.70 2.20 2.20 2.20 2.20 2.20 2.20 2.20 2.20 2.60 2.60 2.60 2.90 2.90 2.90 2.90 2.90 2.90 3.10 1.70 1.70 1.75 1.75 1.75 1.75 1.75 1.75 2.00 2.00 2.00 2.10 2.10 2.10 2.10 2.10 2.10 2.40 -20C 0C 23C 40C Hold Current (A) 1.30 1.30 1.30 1.30 1.30 1.30 1.30 1.30 1.50 1.50 1.50 1.60 1.60 1.60 1.60 1.60 1.60 1.80 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.20 1.20 1.20 1.30 1.30 1.30 1.30 1.30 1.30 1.50 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.90 0.90 0.90 1.00 1.00 1.00 1.00 1.00 1.00 1.20 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.50 0.70 0.70 0.70 0.70 0.70 0.70 0.90 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 50C 60C 70C 85C
Average Time Current Curves
Temperature Rerating Curve
200%
170% 150% Percentage of Rated Current
B A
130% 110% 90% 70% 50% 30% 10% -40 -30 -20 -10 0 10 20 30 40 Temperature (C) 50 60 70 80
A: 16VT170XS B: 16VT210S
The average time current curves and temperature rerating curve performance is affected by a number or variables, and these curves provided as guidance only. Customer must verify the performance in their application.
VT Series Specifications are subject to change without notice.
Electronics Designers Guide
www.littelfuse.com (c)2006 Littelfuse
POLYFUSE(R) Resettable PTCs
Axial Leaded Strap
Physical Specifications
Terminal Material 0.13mm nominal thickness, quarter-hard nickel
Environmental Specifications
Operating/Storage Temperature Passive Aging Humidity Aging -40C to +85C +70C, 1000 hours 10% typical resistance change +85C, 85%R.H. 70days 5% typical resistance change MIL-STD-202 Method 107G +85C/-40C 20 times -30% typical resistance change MIL-STD-883C, Method 2007.1, Condition A No change
Insulating Material Polyester tape
Thermal Shock
Vibration
VT Series Specifications are subject to change without notice.
Electronics Designers Guide
www.littelfuse.com (c)2006 Littelfuse
POLYFUSE(R) Resettable PTCs
Axial Leaded Strap
Dimensions
Figure 1 Figure 1
SLIT
A A
Figure 2 Figure 2
0.5 x 4.0 NOMINAL 0.5 x 4.0 SLIT (.02"x .15") (.02"x .15") NOMINAL A A E EB SLIT
Figure 3 Figure 3
0.5 x 4.0 NOMINAL 0.5 x 4.0 SLIT (.02"x .15") (.02"x .15") NOMINAL A A
B
B
Marking Marking
B
E E
B D1
Marking Marking
D1 D2
B D1 C
Marking Marking
D1 D2
E
E
D1
D1
D2 C
D2 C
D2 C
C
D2 C
Figure 4 Figure 4
A A E B
Figure 5 Figure 5
A A E
B
B D1
Marking Marking
D1 D2
E
B D1
Marking Marking
D1 D2 D2
E
D2 C
C
C
C
Figure 6 Figure 6
A A E B B D1 E
Marking Marking
D1 D2 D2 C
C
Double Sided Marking Sided Marking Double Top Side
Top Side Product SeriesProduct Series
A Part Number Inches mm Inches
B mm
Inches 210 mm210 Min. Max.
VT
C
D1
D2 Inches Min Max 0.16 0.16 0.16 0.16 0.24 mm Min 4.00 4.00 4.00 4.00 6.00 5.70 8.70 5.20 4.00 4.00 Max 7.30 10.30 6.80 Inches Min 0.15 0.15 0.11 0.11 0.11 0.09 0.09 0.09 0.11 0.11 0.11 0.15 0.15 0.15 0.15 0.11 0.15 0.15 Max 0.16 0.16 0.12 0.12 0.12 0.10 0.10 0.10 0.12 0.12 0.12 0.16 0.16 0.16 0.16 0.12 0.16 0.16
E mm Min 3.90 3.90 2.90 2.90 2.90 2.40 2.40 2.40 2.90 2.90 2.90 3.90 3.90 3.90 3.90 2.90 3.90 3.90 Max 4.10 4.10 3.10 3.10 3.10 2.60 2.60 2.60 3.10 3.10 3.10 4.10 4.10 4.10 4.10 3.10 4.10 4.10 1 2 1 2 1 4 6 6 1 2 4 1 2 3 1 5 5 1 Figure
VT
Inches
mm Max -
Min. Max. Min. 16VT170 16VT170XS 16VT175 16VT175S 16VT175L 16VT175XL 16VT175EL 16VT175NEL 16VT200 16VT200S 16VT200UL 16VT210 16VT210S 16VT210SS 16VT210L 16VT210NL 16VT210UL 16VT240 0.61 0.69 15.40 0.82 0.90 20.90 0.82 0.87 20.90 0.82 0.87 20.90 1.02 1.10 26.00 1.00 1.11 25.50 1.53 1.62 38.80 1.53 1.62 38.80 0.82 0.91 20.90 0.82 0.91 20.90 1.42 1.54 36.00 0.82 0.91 20.90 0.82 0.91 20.90 0.82 0.91 20.90 0.94 1.02 24.00 2.78 2.81 70.50 2.78 2.81 70.50 0.95 1.03 24.20
Max. Min. Max.
Littelfuse Min. Max.Littelfuse Max. Min. Trademark Trademark
Current Rating Min. MaxCurrent Rating Min
17.50 0.28 0.29 7.00 7.40 0.02 0.03 0.50 0.80 0.16
Bottom Side Bottom Side
-
4.00
Product 22.90 0.19 0.21 4.90 5.30 0.02 0.03 0.50 0.80 0.16 SeriesProduct Series 4.00
22.20 0.14 0.15 3.50 3.80 0.02
Trademark Trademark
210 0.03 0.50 XXEF
VT
210 0.70 0.16 XXEF
VT
-
Current RatingCurrent Rating
4.00
22.20 0.14 0.15 3.50 3.80 Littelfuse 0.03 0.50 0.70 Lot Number - Lot Number 0.02 0.16 4.00 Littelfuse 28.00 0.14 0.15 3.50 3.80 0.02 0.03 0.50 0.80 information) - for additional 0.24 6.00 information) 28.20 0.14 0.15 3.50 3.90 0.02 0.03 0.50 0.80 0.34 0.41 8.70
(Contact Littelfuse (Contact Littelfuse for additional
10.30 0.22 0.29
41.20 0.14 0.15 3.50 3.90 0.02 0.03 0.60 0.80 0.74 0.80 18.70 20.30 0.34 0.41 41.20 0.11 0.13 2.90 3.30 0.02 0.03 0.60 0.80 0.79 0.87 20.00 22.00 0.20 0.27 23.10 0.15 0.17 3.80 4.30 0.02 0.03 0.60 0.70 0.16 23.10 0.15 0.17 3.80 4.30 0.02 0.03 0.60 0.70 0.16 4.00 4.00 3.90 4.10 4.10 4.10 5.00 25.00 28.50 5.00 5.30 5.80 0.16 0.16 -
39.00 0.16 0.17 4.10 4.30 0.02 0.03 0.50 0.80 0.15 0.21 23.10 0.19 0.21 4.90 5.30 0.02 0.03 0.60 0.80 0.16 -
0.78 0.85 19.70 21.50 0.16 4.10 4.10 4.10 5.00 25.00 28.50 5.00 5.80 -
23.10 0.19 0.21 4.90 5.30 0.02 0.03 0.60 0.80 0.16 0.23 23.10 0.19 0.21 4.90 5.30 0.02 0.03 0.60 0.80 0.16 26.00 0.19 0.21 4.90 5.30 0.02 0.03 0.60 0.80 0.20 71.50 0.15 0.17 3.80 4.30 0.02 0.03 0.60 0.80 0.98 71.50 0.19 0.21 4.90 5.30 0.02 0.03 0.60 0.80 1.12 26.20 0.19 0.21 4.90 5.30 0.02 0.03 0.60 0.80 0.20 -
0.16 0.23 0.16 0.20 0.98 1.12 0.20 -
VT Series Specifications are subject to change without notice.
Electronics Designers Guide
www.littelfuse.com (c)2006 Littelfuse
Figure 6
A E
POLYFUSE(R) Resettable PTCs
Axial Leaded Strap
Double Sided Marking Top Side Product Series
Marking
D2 C
Part Marking System
Double Sided Marking Littelfuse Trademark
210
Current Rating
VT
Top Side Product Series
Bottom Side Product Series
210
Littelfuse Trademark Current Rating Littelfuse Trademark
VT
210 XXEF
VT
Current Rating
Lot Number (Contact Littelfuse for additional information)
Bottom Side Product Series
Part Numbering System
16 VT 175 NEL U
Littelfuse QUANTITY CODE Trademark
210 XXEF
VT
Current Rating
U: 500 (bulk)
Lot Number (Contact Littelfuse for additional information)
LEAD OPTIONS: Blank = standard EL = extra long lead L = long lead NEL = narrow extra long lead NL = narrow long lead
S = slit lead SS = both leads slit UL = ultra long lead XL = extended long lead XS = extended long lead slit
HOLD CURRENT (VALUE DIVIDED BY 100 = HOLD CURRENT IN AMPS) SERIES Voltage Rating (VDC)
Packaging
I hold (A) All Ratings Packaging Option Bulk Quantity 500 Quantity & Packaging Codes U
VT Series Specifications are subject to change without notice.
Electronics Designers Guide
www.littelfuse.com (c)2006 Littelfuse

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