PolySwitch®
PTC Devices
PRODUCT: LR4-380XF
Overcurrent Protection Device
DOCUMENT: SCD27530
REV LETTER: C
REV DATE: JULY 26, 2016
PAGE NO.: 1 OF 2
Specification Status: Released
Electrical Rating
A
D
Voltage: 15V MAX
Current: 100A MAX
E
C
B F
Leads: Nickel
0.125mm nominal thickness
Solder:
ORIENTATION MARK(Blue)
Lead-free
Tape: Polyester(White)
22mm Width
Marking: (Color: Green)
Manufacturer's Mark
E38
Part Identification
Lot Identification
1
d
TABLE I. DIMENSIONS:
A
B
MIN
MAX
MIN
MAX
mm: 32.2
35.8
4.9
5.5
in*: (1.26) (1.4)
(0.19)
(0.21)
*Rounded off approximation
C
MIN
0.6
(0.02)
D
MAX
1.0
(0.03)
MIN
5.5
(0.21)
E
MAX
7.5
(0.29)
MIN
5.5
(0.21)
F
MAX
7.5
(0.29)
MIN
3.9
(0.15)
MAX
4.1
(0.16)
TABLE II. PERFORMANCE RATINGS: As measured in Mueller Kelvin Clips model BU-75K.
I HOLD
CURRENT TRIP LIMITS
AMPS
AMPS
20°C
AT 0°C
HOLD HOLD TRIP
3.8
4.4
9.7
TIME TO
TRIP
REFERENCE
RESISTANCE
AMPS
AMPS
SECONDS AT
OHMS
AT 20°C
AT 60°C
20°C,19.0A
AT 20°C
HOLD TRIP HOLD TRIP TYP MAX MIN MAX
3.8
8.3
2.8
6.1
-5.0 0.013 0.026
Agency Recognition:
Reference Document:
Precedence:
Effectivity:
CAUTION:
ONE-HOUR
POST-TRIP
RESISTANCE
OHMS
AT 20°C
MIN
MAX
0.013 0.037
TRIPPEDSTATE
POWER
DISSIPATION
WATTS AT
20°C, 15V
TYP
MAX
-2.5
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.
Materials Information
ROHS Compliant
ELV Compliant
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised July 26, 2016
Pb-Free
littelfuse.com
PolySwitch®
PTC Devices
Overcurrent Protection Device
PRODUCT: LR4-380XF
DOCUMENT: SCD27530
REV LETTER: C
REV DATE: JULY 26, 2016
PAGE NO.: 2 OF 2
Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test
each product selected for their own applications. Littelfuse products are not designed for, and shall not be used for, any purpose
(including, without limitation, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for
surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in
personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation.
Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse
documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended
by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and
Conditions of Sale, unless otherwise agreed by Littelfuse.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised July 26, 2016
littelfuse.com
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