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PolySwitch?
PRODUCT: LR4-900F
308 Constitution Drive
Menlo Park, CA 94025-1164
Phone: 800-227-4856
PTC Devices
Overcurrent Protection Device
DOCUMENT: SCD25964
REV LETTER: D
REV DATE: MAY 10, 2011
PAGE NO.: 1 OF 1
www.circuitprotection.com
Specification Status: Released
Maximum Electrical Rating
Operating Voltage: 20Vdc
Interrupt Current: 100A
Chip Size: 8 x 33mm
Leads: Nickel 1/2H
0.3mm nominal thickness
Tape: Polyester ( White)
35 mm nominal width
Solder: Lead-free
Marking (Color: Green) :
Manufacturer's Mark
ORIENTATION MARK (Blue)
E90
Part Identification
Lot Identification
TABLE I. DIMENSIONS:
A B
C
D
E
F
MIN MAX MIN MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
Mm:
45.4 47.6 7.9 8.5
0.9
1.3
4.6
6.2
4.6
6.2
5.9
6.1
In*: (1.79) (1.87) (0.31) (0.33)
(0.04)
(0.05)
(0.18)
(0.24)
(0.18)
(0.24)
(0.23)
(0.24)
*Rounded off approximation
TABLE II. PERFORMANCE RATINGS: As measured in Mueller Kelvin Clips model BU-75K.
I HOLD
CURRENT TRIP LIMITS
TIME TO
TRIP
REFERENCE
RESISTANCE
ONE-HOUR
POST-TRIP
TRIPPED-
STATE
RESISTANCE
POWER
DISSIPATION
AMPS
20°C
AMPS
AT 0°C
AMPS
AT 20°C
AMPS
AT 60°C
AMPS
AT 70°C
SECONDS AT
20°C, 45.0A
OHMS
AT 20°C
OHMS
AT 20°C
WATTS AT
20°C, 20V
HOLD
HOLD
TRIP
HOLD TRIP HOLD
TRIP HOLD TRIP
MIN MAX
MIN MAX
MIN MAX
MAX
9.0
10.0 18.7
9.0 16.7
6.2 11.6 5.5 10.3 --- 5 0.006 0.010
0.006
0.014
3.8
Angency Recognitions:
Reference Documents:
Precedence:
Effectivity:
CAUTION:
Materials Information:
UL, TUV, CSA
PS300
This specification takes precedence over documents referenced herein.
Reference documents shall be the issue in effect on the date of invitation for bid.
Operation beyond the rated voltage or current may result in rupture, electrical arcing or flame.
ROHS Compliant
ELV Compliant
Pb-Free
? 2004, 2011 Tyco Electronics Corporation, a TE Connectivity Ltd. Company. All rights reserved.
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