Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302 Tel: 201-432-0463 Fax: 201-432-9542 E-Mail: belfuse@belfuse.com
Website: www.belfuse.com
ORDERING INFORMATION SEE PAGES 67 & 68
Specifications subject to change without notice
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Type RJS
Telecom - Power Cross Protection & Ballast Protection
RJSD0303
Consult manufacturer for other ratings
Mechanical Dimensions
RJS Fuses are primarily intended for use in telecommunication circuit
applications requiring low current protection with high surge tolerance.
They are typically used to replace heat coil type devices. They are designed
to be placed between the line input and the surge arresting components
(mov. gas tube, zenor diode, air gaps, etc.)
These fuses will withstand transient surge currents generated by
lightning in accordance with the attached table.
RJS fuses guard protected circuitry against sustained overload or
short circuit conditions. Such sustained overloads may be generated by
accidental contact between utility cables and phone lines (power line
cross).
RJS Fuse are used in circuits to obtain compliance with the test
requirements specified in UL 1950/60950 and Bellcor
e GR 1089.
Power Cross (Telecom) Rating
(Fuse Rated 0.1 - 1.5A)
Approvals
Electrical Characteristics
(UL/CSA STD. 248-14)
Operating Temperature
-55
C to +125
C
Environmental Specification
Soldering Techniques & Compatibility
Wave Solder: 260
C, 10 sec max. (MIL-STD-202, Method 210)
Shock
MIL-STD-202, Method 213, Test Condition I
(100 G's peak for 6 milliseconds)
Vibration
MIL-STD-202, Method 201 (10-55 Hz, 0.06 inch, total
excursion)
Salt Spray
MIL-STD-202, Method 101, Test condition B (48 hrs)
Insulation Resistance
MIL-STD-202, Method 302, Test Condition A
(After Opening) 10,000 ohms minimum
Solderability
MIL-STD-202, Method 208
Resistance to solder Heat
MIL-STD-202, Method 210, Test Condition C (260
C, 20 sec)
Thermal Shock
MIL-STD-202, Method 107, Test Condition B (-65
C to+125
C)
Operating Temperature
-55
C to +125
C
rSc
r
S
Materials
Body: Glass;
Lead Wire: Tin-lead plated Copper, Diameter 0.032"
Marking
On fuse: "bel", "Type""Current Rating" "Voltage Rating" "Appropriate
Safety Logos"
On label: Above info; Interrupting Rating plus "
c"
Packaging
In bulk : 2,000 pcs per box. (standard Lead) 500 pcs per box. (short Lead)
Physical Specification
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Current
TO
a
b
T1
T2
Time
Waveform Duration Of A/B Seconds
A=Rise Time=T1-T0 (1.25(b-a)
B=Duration=T2-T0
(Peak Value) Ip
0.9 Ip
0.1 Ip
0.5 Ip
B
D
A
C
0.80" ( 20.3mm)
1.0mm DIA.
RECOMMENDED
PCB HOLE SIZE AND SPACING
35
TIME IN SECONDS
CURRENT IN AMPERES
Specifications subject to change without notice
NOTE - see important information under "User Guide"on P.08
Corporate Office
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
Tel: 201-432-0463
Fax: 201-432-9542
E-Mail: belfuse@belfuse.com
Website: www.belfuse.com
Far East Office
Bel Fuse Ltd.
8F/8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel: 852-2328-5515
Fax: 852-2352-3706
European Office
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Preston PR1 8UD
Lancashire, U.K
Tel: 44-1772-556601
Fax: 44-1772-888366
RJSC0303
RJS - TIME CURRENT CHARACTERISTIC CURVE
Type RJS
Telecom - Power Cross Protection & Ballast Protection
0.01
0.1
1
10
100
1000
10000
0.01
0.1
1000
1
10
-
100mA
-
125mA
-
160mA
-
200mA
-
250mA
-
300mA
-
350mA
-
400mA
-
500mA
-
600mA
-
750mA
-
1A
-
1.25A
-
1.5A
-
2A
-
2.5A
-
3A
-
4A
-
5
A
100
36
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