METAL OXIDE RESISTORS, 1/2W to 9W
RSF SERIES-
Standard
RMF SERIES-
Miniature
Low cost! Delivery from stock (standard E-24 values, 5%)
Flameproof construction (UL94V-0)
0.1Ω to 1 Meg, standard tolerances: ±1%, ±2%, ±5%
All sizes avail. on horizontal tape, ½-3W avail. on vertical tape
Options include increased voltages, custom marking, cut &
formed leads, Sn-Pb solder leads (Opt. Q), high pulse (Opt. P), etc.
H*
L
D
RoHS
Term.W is
RoHS
compliant
& 260°C
compatible
RESISTORS CAPACITORS COILS DELAY LINES
d
RCD‘s oxide film resistors are ideally suited for medium-power
applications. Surge levels exceed that of other film constructions. A
thick complex-oxide material is deposited on a ceramic core for
optimum heat dissipation, low inductance, and high stability even
after extended periods. Series RMF (mini version) utilizes highest
grade cores and special processing for increased power density.
Flameproof coating offers excellent environmental protection and is
resistant to solvents and humidity. Available bulk or T&R (5Kpcs/reel
RMF1/2, 2.5Kpcs RSF1A, 2Kpcs RSF1B & RMF1, 1Kpcs RSF2B &
RMF3, 500pcs RSF3B-7B & RMF5-7).
RSF TEMP RISE (°C)
* Dim. H is for bulk pack, taped leads may be shorter (refer to taping spec). Non-std lengths and cut&form avail
Opt. P
Standard
Max.
Wattage
SERIES
P eak
Resistance
Voltage
R SF
Pulse
1
R an g e
25°C 70°C Rating Voltage
2
Stock
240
180
120
RSF1A
60
0
100
75
50
25
0
25
50
1
2
3
RSF2B
RSF1B
RSF3B
RSF5B
RSF7B
L± .032
[.8]
.354 [9]
.433 [11]
.590 [15]
D±.025
[.6]
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
.135 [3.4] .025 [.65]
.165 [4.2]
.212 [5.4]
.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
RSF DERATING
(% 70°C W &V RATING)
Stock
Stock
RSF2B 3.0W 2.0W
RSF3B 5.0W 3.0W
RSF5B 7.0W 5.0W
RSF7B 9.0W 7.0W
SERIES
RMF
Wattage
Rating
---------
RSF1A to RSF7B
0.47
Ω
to 1M .950 [24.1] .320 [8.1]
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)
Max Opt. P Peak Standard
Voltage
Pulse
Resistance L±.032 [.8] D±.025 [.6] d±.004
[.1]
1
2
Rating
Voltage
R an g e
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 .250 [6.35]
0.1
Ω
-1M
0.1
Ω
1M
0.1
Ω
-1M
.375 [9.53]
.450 [11.4]
.598 [15.2]
.090 [2.3]
.135 [3.4]
.162 [4.1]
.213 [5.4]
.335 [8.5]
.250 [6.4]
.335 [8.5]
.024 [.6]
.024 [.6]
.031 [.8]
RMF TEMP RISE (°C)
240
180
120
60
0
RMF1
RMF
½
RMF2 RMF3
H* (Min.)
.945 [24]
.945 [24]
.945 [24]
RMF5S RMF5 RMF7
RMF1/2 .5W @70°C
RMF1
RMF2
RMF3
RMF5
1W @70°C
2W @70°C
3W @70°C
5W @70°C
1
2
3
4
5
6
7
APPLIED WATTAGE
8
9
10
RMF DERATING
(% 70°C W &V RATING)
.031 [.8] 1.25 [31.7]
.031 [.8] 1.375 [35]
.031 [.8] 1.25 [31.7]
.031 [.8] 1.375 [35]
75
50
25
0
25
50
---------
100
0.47
Ω
-1M .950 [24.1]
0.47
Ω
-1M .695 [17.6]
0.47
Ω
-1M .950 [24.1]
RMF1/2 to RMF5
RMF5S
& RMF7
100 125 150 175 200 225 250
AMBIENT TEMPERATURE (°C)
RMF5S 5W @25°C
RMF7
7W @25°C
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
1
OPTION P PULSE CAPABILITY
(single or infrequent pulse)
2
10KW
±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)
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 W
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 & infrequent pulses
(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
≤
watt 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)
Termination:
W= Lead-free, Q= Tin/Lead (leave blank if either is acceptable)
RCD Components Inc,
520 E.Industrial Park Dr, Manchester, NH, USA 03109
rcdcomponents.com
Tel: 603
-
669
-
0054 Fax: 603
-
669
-
5455 Email:sales@rcdcomponents.com
FA052C
Sale of this product is in accordance with GF-061. Specifications subject to change without notice.
64
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