PolySwitch®
PTC Devices
Overcurrent Protection Device
PRODUCT: RUSBF185
DOCUMENT: SCD25248
REV LETTER: F
REV DATE: JULY 26, 2016
PAGE NO.: 1 OF 2
Specification Status: Released
Electrical Rating
Voltage: 16V
DC
MAX
Current: 40A MAX
Insulating Material:
Cured, Flame Retardant Epoxy Polymer
meets UL 94 V-O Requirements
Lead Material:
24 AWG Tin Plated Copper Clad Steel
Marking:
Manufacturer’s Mark
R185
and Part Identification
Lot Identification
TABLE I. DIMENSIONS:
A
B
MIN
4.3
(0.17)
C
MAX
5.8
(0.23)
MIN
7.6
(0.30)
D
MAX
--
--
MIN
--
--
E
MAX
3.0
(0.12)
MIN
MAX
MIN
MAX
mm:
--
10.2
--
15.7
in*:
--
(0.40)
--
(0.62)
*Rounded off approximation
I HOLD
RATED
CURRENT
CURRENT
RATINGS
TABLE II. PERFORMANCE RATINGS :
INITIAL RESISTANCE
VALUES
ONE HOUR
POST-TRIP
RESISTANCE
STANDARD
TRIP
OHMS
AT 20C
MAX
0.09
TIME TO
TRIP
@ 8A
TRIPPED-
STATE
POWER
DISSIPATION
WATTS
AT 20C
1.0
AMPERS
AT 20C
HOLD
1.85
AMPERES
AT 20C
HOLD
TRIP
1.85
3.70
MIN
0.03
OHMS
AT 20C
TYP
MAX
0.045
0.051
SECONDS
AT 20C
10
Agency Recognitions:
Reference Documents:
Precedence:
Effectivity:
CAUTION:
ROHS Compliant
UL, CSA, TUV
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.
ELV Compliant
Pb-Free
Halogen Free*
Materials Information
HF
* Halogen Free refers to: Br≤900ppm, Cl≤900ppm, Br+Cl≤1500ppm.
© 2016 Littelfuse,Inc.
Specifications are subject to change without notice.
Revised July 26,2016
littelfuse.com
PolySwitch®
PTC Devices
Overcurrent Protection Device
PRODUCT: RUSBF185
DOCUMENT: SCD25248
REV LETTER: F
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, lifesaving,
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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