Littelfuse VL User Manual

VL Series

POLYFUSE® Resettable PTCs

POLYFUSE® Resettable PTCs

Axial Lead Battery Strap Type > VL Series

Description

The new VL 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

Agency Approvals

AGENCY AGENCY FILE NUMBER

Applications

E183209

• Rechargeable battery cell

R50119583

protection

Electrical Characteristics

Maximum Time

d

Current

(A)

To Trip

Time

(Sec.)

Part Number

I

hold

(A)

I
(A)

V

trip

(Vdc)

max

I

(A)

max

P

max.

(W)

12VL170 1.70 4.10 12 100 1.4 8.50 5.00 0.018 0.032 0.064

12VL175L 1.75 4.20 12 100 1.4 8.75 5.00 0.017 0.031 0.062

12VL175XL 1.75 4.20 12 100 1.4 8.75 5.00 0.017 0.031 0.062

12VL230 2.30 5.00 12 100 1.5 10.00 5.00 0.012 0.018 0.036

I

= Hold current: maximum current device will pass without tripping in 20°C still air.

hold

= Trip current: minimum current at which the device will trip in 20°C still air.

I

trip

= Maximum voltage device can withstand without damage at rated current (I max)

V

max

= Maximum fault current device can withstand without damage at rated voltage (V

I

max

= Power dissipated from device when in the tripped state at 20°C still air.

P

d

= Minimum resistance of device in initial (un-soldered) state.

R

min

)

max

= Typical resistance of device in initial (un-soldered) state.

R

typ

= Maximum resistance of device at 20°C measured one hour after tripping or reflow

R

1max

soldering of 260°C for 20 sec.

Caution: Operation beyond the specified rating may result in damage and possible arcing
and flame.

R

(Ω)

min

Resistance

R

typ

(Ω)

• Compact design saves
board space

• Low resistance

Agency

Approvals

R

1max

(Ω)

XX

XX

XX

XX

VL Series

© 2010 Littelfuse, Inc

Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/VL.html for current information.

125

Revised: June 4, 2010

VL Series

POLYFUSE® Resettable PTCs

Axial Lead Battery Strap Type > VL Series

Temperature Rerating

Ambient Operation Temperature

-40°C -20°C 0°C 25°C 40°C 50°C 60°C 70°C

Part Number Hold Current (A)

12VL170 3.5 2.9 2.4 1.70 1.2 1.0 0.7 0.3

12VL175L 3.5 2.9 2.4 1.75 1.3 1.0 0.8 0.3

12VL175XL 3.5 2.9 2.4 1.75 1.3 1.0 0.8 0.3

12VL230 5.0 4.2 3.4 2.30 1.7 1.3 0.9 0.4

Average Time Current Curves

1.70 A

2.30 A

1.75 A

10

1

Time in Seconds

0.1

0.01

1.0

10 100 1000

Current in Amperes

VL

Temperature Rerating Curve

220%

190%

170%

150%

130%

110%

90%

70%

50%

Percentage of Rated Current

30%

10%

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80

Temperature (°C)

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.

VL Series

Revised: June 4, 2010

126

© 2010 Littelfuse, Inc.

Please refer to www.littelfuse.com/series/VL.html for current information.

Specifications are subject to change without notice.

POLYFUSE® Resettable PTCs

POLYFUSE® Resettable PTCs

Axial Lead Battery Strap Type > VL Series

Physical Specifications

Terminal Material

Insulating Material Polyester tape

0.13mm nominal thickness, quarter-hard
Nickel

Dimensions

B

D1 D2

Figure 1

A

Environmental Specifications

Operating/Storage
Temperature

Passive Aging

Humidity Aging

Thermal Shock

Vibration

Figure 2

A

E

C

B

D1 D2

-40°C to +85°C

+60°C, 1000 hours

-/+20% typical resistance change

-40°C, 1000 hours

-/+5% typical resistance change

+60°C, 95% R.H.,1000 hours,

-/+10% typical resistance change

MIL–STD–202F, Method 107G,
+85°C to -40°C 10 times

-/+5% typical resistance change

MIL–STD–883C, Method 2026,
No change

E

C

Part

Number

12VL170 1 0.82 0.91 20.80 23.20 0.14 0.15 3.50 3.90 -- 0.03 -- 0.80 0.18 0.26 4.50 6.50 0.18 0.26 4.50 6.50 0.09 0.10 2.40 2.60

12VL175L 2 1.15 1.25 29.30 31.70 0.11 0.13 2.90 3.30 -- 0.03 -- 0.80 0.20 0.27 5.20 6.80 0.39 0.49 10.00 12.50 0.09 0.10 2.40 2.60

12VL175XL 2 1.00 1.11 25.50 28.20 0.14 0.15 3.50 3.90 -- 0.03 -- 0.80 0.34 0.41 8.70 10.30 0.22 0.29 5.70 7.30 0.09 0.10 2.40 2.60

12VL230 1 0.82 0.91 20.90 23.10 0.19 0.21 4.90 5.30 -- 0.03 -- 0.80 0.16 0.23 4.10 5.80 0.16 0.23 4.10 5.80 0.15 0.16 3.90 4.10

Figure

Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max Min Max Min Max Min Max Min Max. Min. Max.

ABCD1D2E

Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm

Part Marking System

Double Sided Marking

Littelfuse
Trademark

Littelfuse
Trademark

Top Side

VL

230

Bottom Side

VL

230

XXAK

Product Series

Current Rating

Product Series

Current Rating

Lot Number
(Contact Littelfuse
for additional
information)

VL Series

© 2010 Littelfuse, Inc

Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/VL.html for current information.

127

Revised: June 4, 2010

VL Series

Part Ordering Number System

12 VL 175 XL U

QUANTITY CODE: U = 500 (bulk)

LEAD OPTIONS: Blank = standard

L = long lead
XL = extended long lead

HOLD CURRENT (VALUE DIVIDED BY 100 = HOLD CURRENT IN AMPS)

SERIES

VOLTAGE RATING (VDC)

Packaging

POLYFUSE® Resettable PTCs

Axial Lead Battery Strap Type > VL Series

Part Number

Ordering

Number

I

(A)

hold

I

hold

Codes

Packaging

Option

Quantity

Quantity &

Packaging Codes

12VL170 12VL170U 1.70 170 Bulk 500 U

12VL175L 12VL175LU 1.75 175 Bulk 500 U

12VL175XL 12VL175XLU 1.75 175 Bulk 500 U

12VL230 12VL230U 2.30 230 Bulk 500 U

VL Series

128

Revised: June 4, 2010

© 2010 Littelfuse, Inc.

Please refer to www.littelfuse.com/series/VL.html for current information.

Specifications are subject to change without notice.