PolySwitch®
PTC Devices
Overcurrent Protection Device
PRODUCT: TRF250-120T-RC-B-0.5
DOCUMENT: SCD26438
REV LETTER: D
REV DATE: JULY 26, 2016
PAGE NO.: 1 OF 2
Specification Status: RELEASED
Max Electrical Rating at 20°C
Operating Voltage: 60V
DC
Interrupt Current: 3A
RMS
Fault Voltage:
250V
RMS
Lead Material
:
22 AWG Sn plated
copper (0.65 mm
[0.026”] nominal
diameter)
External Coating Material:
Cured, flame
retardant epoxy polymer, meeting UL94 V-0
requirements.
Marking:
Manufacturer’s Mark
Part Identification
RoHS Indication
20 F
Lot Identification
TABLE I. DIMENSIONS:
A
mm:
in:
MIN
--
--
MAX
6.5
(0.256)
MIN
--
--
B
MAX
11.0
(0.433)
MIN
--
--
C
MAX
MIN
4.6
4.7
(0.180) (0.185)
D
MAX
--
--
E
NOM
5.0
(0.197)
F
MIN
--
--
MAX
7.0
(0.276)
TABLE II. PERFORMANCE RATINGS @ 20
°
C (unless otherwise noted):
IHOLD (A)
ITRIP (A)
RESISTANCE (Ω)
R MIN
5.4
R MAX
7.5
R
1 MAX
*
14.0
TIME TO TRIP (s)
@ 1A
TYP
3
OPERATING
TEMPERATURE (°C)
MIN
-40
MAX
85
0.130
0.260
*Maximum device resistance at 20
°
C measured 1-hour post trip.
Additional Ratings @ 20°C
Resistance Matched 0.5 Ohm
Lightning Withstand
ITU-T at 1.5kV
Agency Recognition:
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
© 2016 Littelfuse,Inc
Specifications are subject to change without notice.
Revised July 26, 2016
Littelfuse.com
PolySwitch®
PTC Devices
Overcurrent Protection Device
PRODUCT: TRF250-120T-RC-B-0.5
DOCUMENT: SCD26438
REV LETTER: D
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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