172
KOA Speer Electronics, Inc. • Bolivar Drive • P.O. Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 2/20/07
circuit
protection
RF73
fusing flat chip resistor
features
•Anti-leaching nickel barrier terminations
•Suitable for flow and reflow soldering
•Performs like RK73 under normal conditions
•Fuses when overloaded
•Marking: Black three-digit on brown protective coating
•Products with lead-free terminations meet
RoHS requirements. Pb located in glass material,
electrode and resistor element is exempt per Annex 1,
exemption 5 of EU directive 2005/95/EC
For further information on packaging,
please refer to Appendix A.
ordering information
J: ±5%T: Sn
(Other termination
styles may be
available, please
contact factory
for options)
2 significant
figures + 1
multiplier
“R” indicates
decimal on
value <10!
1J: 0603
2A: 0805
2B: 1206
2E: 1210
2H: 2010
3A: 2512
TD: 7" paper tape
(0603, 0805, 1206, 1210:
5,000 pieces/reel)
TE: 7" punched plastic
(0805, 1206, 1210, 2010,
2512: 4,000 pieces/reel)
RF73
Type Size Code Nominal
Resistance Tolerance
Termination
Material Packaging
New Part # 2B TD 100 JT
Protective
Coating Inner
Electrode
Resistive
Film
Ceramic
Substrate
Solder
Plating
Ni
Plating
Lcc
W
t
d
dimensions and construction
Type
L
.012 +.008
-.004
(0.3
+
0.2 )
-0.1
.016 +.008
-.004
(0.4
+
0.2 )
-0.1
.02±.004
(0.5
±
0.1)
.024±.004
(0.6
±
0.1)
.016±.008
(0.4
±
0.2)
.02±.012
(0.5
±
0.3)
.063±.008
(1.6
±
0.2)
.102±.008
(2.6
±
0.2)
.098±.008
(2.5
±
0.2)
.122±.008
(3.1
±
0.2)
.126±.008
(3.2
±
0.2)
.049±.004
(1.25
±
0.1)
.079±.008
(2.0
±
0.2)
.197±.008
(5.0
±
0.2)
.248±.008
(6.3
±
0.2)
2A
(0805)
2B
(1206)
2H
(2010)
3A
(2512)
(Inch Size Code) W c d t
Dimensions inches
(mm)
2E
(1210)
.025±.006
(0.65
±
0.15)
.031±.004
(0.8
±
0.1)
.063±.008
(1.6
±
0.2)
1J
(0603)
.012±.004
(0.3
±
0.1)
.012±.004
(0.3
±
0.1)
RF73
fusing flat chip resistor
Maximum
Open
Circuit
Voltage
Part
Designation
Operating
Temperature
Range
Power
Rating
@ 70°C
T.C.R.
(ppm/°C)
Max.
Resistance
Range
E-24*
Resistance
Tolerance
applications and ratings
RF732A
RF732B
RF732E
RF732H
RF733A
±1000
(0.2!-4.3!)
±500
(4.7!-510!)
3.0W
0.2!-0.47!
3.75W
0.2!-0.47!
4.5W
0.2!-0.47!
5.5W
0.2!-0.47!
6.5W
0.2!-0.47!
2.6W
0.51!-1.0!
2.875W
0.51!-10!
4.1W
0.51!-4.7!
5.0W
0.51!-4.7!
6.0W
0.51!-4.7!
2.4W
1.1!-20!
2.5W
11!-24!
3.5W
5.1!-27!
4.0W
5.1!-27!
5.0W
5.1!-30!
2.1W
22!-100!
2.0W
27!-100!
3.2W
30!-100!
3.5W
30!-100!
4.5W
33!-100!
2.0W
110!-510!
1.75W
110!-510!
3.0W
110!-510!
3.2W
110!-510!
4.0W
110!-510!
0.1W
0.125W
0.25W 0.2!-510!
J: ±5%
50V
100V
0.50W
1.0W
-55°C
to
+125°C
60
sec.
max.
Fusing
Time
Fusing Characteristics
Fusing Power
* RCWV = Rated Continuous Working Voltage.
Performance Characteristics
Parameter
Thermal Shock MIL-STD-202, Method 107, -55°C to +125°C, 5 cycles
±1.0%
Low Temperature Operation MIL-R-55342 "4.7.4, 1 hour @ -55°C followed by 45 minutes of RCWV*
±1.0%
High Temperature Exposure MIL-R-55342 "4.7.6, 100 hours @ 125°C
±1.0%
Short Time Overload MIL-R-55342 "4.7.5, 2.5 x RCWV for 5 seconds
±5.0%
Resistance to Solder Heat MIL-R-55342 "4.7.7, 260°C for 10 seconds
±1.0%
Terminal Strength-Bend 2mm min. deflection in either direction for 10 seconds
±1.0%
Moisture Resistance MIL-STD-202, Method 103, 40°C, 90 - 95% RH, 1000 hours
±5.0%
Life
Dielectric Withstanding Voltage
2A, 2B, 2E
2H, 3A
MIL-STD-202, Method 108, 70°C,
1000 hours @ RCWV, 1.5 hr ON, 0.5 hr OFF
MIL-STD-202, Method 301
±5.0%
200V
400V
Insulation Resistance 10,000 M!Minimum
Maximum #R Test Method
Pulse 2.5 x RCWV, not exceeding maximum overload voltage, 1 second ON,
25 seconds OFF, 10,000 cycles
±5.0%
Temperature Cycling 30 minutes @ -55°C, 15 minutes @ +25°C, 30 minutes @ +125°C,
15 minutes @ +25°C, 5 cycles
±1.0%
Derating Curve
environmental applications
% Rated Power
100
80
60
40
20
-60 -40 -20 0 40 60 80 100 140
70
20
Ambient Temperature
(°C)
0
-55
120
125
One-Pulse Limiting Electric Power
Limiting Electric Power
100
10
.1 10
2E
1J, 2A
2B
1
2H
Pulse Duration
(msec)
1001.01
3A
Typical Fusing Characteristics
Fusing TIme (Sec.)
10
1 5
2E
1J,
2A 2B
12H
Fusing Power
(W)
620
3A
3 4 7 8
RF731J –– 2.6W
1.0!
2.4W
1.1!-20!
2.1W
22!-100!––0.63W
+1000 ~ -500
(1.0!-3.3!)
±500
(3.6!-100!)
1!-100!
173
KOA Speer Electronics, Inc. • Bolivar Drive • P.O. Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 8/02/07
circuit
protection
