METAL OXIDE RESISTORS, 0.5 WATT to 9 WATT
RSF SERIES-
Standard
RMF SERIES-
Miniature
H
Low cost! Delivery from stock (standard E-24 values, 5%)
H
Flameproof construction (UL94V-0)
H
0.1Ω to 1 Meg, standard tolerances: ±1%, ±2%, ±5%
H
All sizes avail. on horizontal tape, ½-3W avail. on vertical tape
RESISTORSM CAPACITORSM COILSM DELAY LINES
M
M
M
Economical medium-power resistors!
RCD‘s metal oxide resistors offer excellent performance characteristics
and are ideally suited for medium-power applications. Surge levels
exceed that of other film constructions. The resistance film is a propri-
etary thick complex-oxide material deposited on ceramic core for
optimum heat dissipation, low inductance, and stable performance even
after extended periods. Series RMF utilize higher grade ceramic cores
and special processing for increased power density. Multilayer flame-
proof coating offers excellent environmental protection and is resistant
to industrial solvents, steam, and humidity.
OPTIONS
H
Options include increased voltages, custom marking,
cut&formed leads, high pulse (Opt. P), lead-free (Opt. W), etc.
H*
L
d
D
* Dim. H is for bulk pack, taped leads may be shorter (refer to taping spec). Non-std lengths and cut&form avail
RSF TEMP RISE (°C)
Opt. P
Standard
Max.
SERIES
P eak
Resistance L± .032 [.8]
Voltage
R SF
Pulse
R an g e
Rating
1
2
25°C 70°C
Voltage
Wattage
Stock
240
180
120
RSF1A
60
0
1
2
3
RSF2B
RSF1B
RSF3B
RSF5B
RSF7B
D±.025
[.6]
.135 [3.4]
.165 [4.2]
.212 [5.4]
.320 [8.1]
d±.004 [.1]
H* (Min.)
RSF1A 1.0W 0.7W
RSF1B 1.5W 1.0W
300V
350V
350V
500V
750V
800V
2K V
2.5KV
3K V
4.5KV
6K V
8K V
0.1
Ω
to 1M
0.1
Ω
to 1M
0.1
Ω
to 1M
0.47
Ω
to 1M
.354 [9]
.433 [11]
.590 [15]
.950 [24.1]
.025 [.65]
.031 [.8]
.031 [.8]
.031 [.8]
.031 [.8]
.031 [.8]
.945 [24]
.945 [24]
1.06 [27]
1.25 [31.7]
1.375 [35]
1.375 [35]
4
5
6
7
APPLIED WATTAGE
8
9
10
Stock
Stock
RSF2B 3.0W 2.0W
RSF3B 5.0W 3.0W
RSF5B 7.0W 5.0W
RSF7B 9.0W 7.0W
RSF DERATING
(% 70°C W RATING)
75
50
25
0 25
50
---------
100
RSF1A to RSF7B
0.5
Ω
to 240K 1.585 [40.3] .320 [8.1]
2.0
Ω
to 510K 2.080 [52.8]
.320 [8.1]
75
70
100 125 150 175 200 225 250
AMBIENT TEMPERATURE (°C)
SERIES Wattage
Max
Opt. P
Standard
RMF
Rating Voltage Peak Pulse Resistance
Rating
1
Voltage
2
R an g e
RMF1/2 .5W @70°C
RMF1
RMF2
RMF3
RMF5
RMF5S
RMF7
1W @70°C
2W @70°C
3W @70°C
5W @70°C
5W @25°C
7W @25°C
250V
300V
350V
350V
500V
500V
500V
2K V
2.5KV
3K V
3.5KV
5K V
4K V
5K V
0.1
Ω
-510K
0.1
Ω
-1M
0.1
Ω
1M
0.1
Ω
-1M
0.47
Ω
-1M
0.47
Ω
-1M
0.47
Ω
-1M
L±.032
[.8]
D±.025
[.6]
d±.004 H* (Min.)
[.1]
.024 [.6]
.024 [.6]
.031 [.8]
.945 [24]
.945 [24]
.945 [24]
RMF TEMP RISE (°C)
240
180
120
60
0
RMF1
RMF
½
RMF2 RMF3
RMF5S RMF5 RMF7
.250 [6.35] .090 [2.3]
.375 [9.53] .135 [3.4]
.450 [11.4] .162 [4.1]
.598 [15.2] .213 [5.4]
.950 [24.1] .335 [8.5]
.695 [17.6] .250 [6.4]
.950 [24.1] .335 [8.5]
1
2
3
4
5
6
7
APPLIED WATTAGE
8
9
10
.031 [.8] 1.25 [31.7]
.031 [.8]
1.375 [35]
75
50
25
0 25
50
---------
100
RMF DERATING
RMF1/2 to RMF5
RMF5S
& RMF7
100 125 150 175 200 225 250
AMBIENT TEMPERATURE (°C)
.031 [.8] 1.25 [31.7]
.031 [.8]
1.375 [35]
75
70
TYPICAL PERFORMANCE CHARACTERISTICS
Temperature Coefficient
Insulation Resistance
Load Life (1000 hours)
Short-Time Overload
Temperature Cycling
Moisture Resistance
Shock and Vibration
Effect of Soldering
Voltage Coefficient
Current Noise
Dielectric Strength
Standard Marking
(custom marking avail)
Terminal Strength
Operating Temp Range
±100ppm Typ., ±200 Max.
10,000 M
Ω
Min.
±2% RSF
70
, ±3% RSF
25
, ±3% RMF
2.5x rated W, 5S, nte 2x rated V
±1.0%
±2.0%
±0.2%
±0.5%
.001%/ V
<.1
µ
V/ V/decade
500V (350V sizes <2W)
Color banded or stamped with
resis.value & tol as minimum
5 pound pull (minimum)
-55 to +235°C (+200°C RMF)
OPTION P PULSE CAPABILITY
(single or infrequent pulse)
2
10KW
Peak Wattage
1KW
RMF7P,RSF7BP
RMF3P,RSF3BP
RMF2P,RSF2BP
RMF1P
RMF1/2P
RSF1AP
100W
10W
1uS
10uS
100uS
1mS
10mS
100mS
P/N DESIGNATION:
RSF2B
- 101
-
J
T
1
Rated continuous working voltage determined by E=(PR)
1/2
, E not to
exceed max voltage rating. Increased ratings avail.
2
Peak voltage is for Opt.P (derate 50% for std parts), single or infrequent pulse
(derate 30-50% for frequent pulses), based on 1uS pulse duration (derate 10-30%
for longer pulses). Pulse to be
≤
peak wattage and
≤
peak voltage rating. Average
pulse power to be
≤
wattage rating. Consult factory for assistance, verify samples.
RCD Type
Option Codes:
leave blank if standard
Resis.Code 1%:
3 signif. figures & multiplier,
(R100=.1Ω, 1R00=1Ω,10R0=10Ω,1000=100Ω,1001=1K,1004=1M)
Resis.Code 2%-10%:
2 signif. figures & multiplier,
(R10=0.1Ω, 1R0=1Ω, 100=10Ω, 101=100Ω, 102=1K, 105=1M)
Tolerance Code:
J=5% (std), G=2%, F=1%
Packaging:
B = Bulk, T = Horizontal Tape & Reel,
APN=Vertical Tape & Box (available up to 3W size)
RCD Components Inc.,
520 E. Industrial Park Dr., Manchester, NH, USA 03109
Tel: (603) 669-0054 Fax:(603) 669-5455 E-mail:sales@rcdcomponents.com
www.rcdcomponents.com
FA052B specifications subject to change without notice
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