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.
L
H*
d
D
RoHS
Term.W is
RoHS
compliant
& 260°C
compatible
RESISTORS CAPACITORS COILS DELAY LINES
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).
H* (Min.)
RSF1A 1.0W 0.7W
300V
2K V
0.1Ω to 1M
.354 [9]
.135 [3.4] .025 [.65]
.945 [24]
RSF1B 1.5W 1.0W
350V
2.5KV
0.1Ω to 1M
.433 [11]
.165 [4.2]
.031 [.8]
.945 [24]
Stock
RSF2B 3.0W 2.0W
350V
3K V
0.1Ω to 1M
.590 [15]
.212 [5.4]
.031 [.8]
1.06 [27]
Stock
RSF3B 5.0W 3.0W
500V
4.5KV
0.47Ω to 1M .950 [24.1] .320 [8.1]
.031 [.8]
1.25 [31.7]
RSF5B 7.0W 5.0W
750V
6K V
0.5Ω to 240K 1.585 [40.3] .320 [8.1]
.031 [.8]
1.375 [35]
RSF7B 9.0W 7.0W
800V
8K V
2.0Ω to 510K 2.080 [52.8] .320 [8.1]
.031 [.8]
1.375 [35]
Stock
SERIES
RMF
Wattage
Rating
Max Opt. P Peak Standard
Voltage
Pulse
Resistance L±.032 [.8] D±.025 [.6] d±.004
[.1]
Rating1 Voltage2
R an g e
0.1Ω -510K .250 [6.35]
RMF1/2 .5W @70°C
250V
2K V
RMF1
1W @70°C
300V
2.5KV
0.1Ω -1M
RMF2
2W @70°C
350V
3K V
RMF3
3W @70°C
350V
3.5KV
RMF5
5W @70°C
500V
RMF5S 5W @25°C
500V
RMF7
7W @25°C
500V
H* (Min.)
.090 [2.3]
.024 [.6]
.945 [24]
.375 [9.53]
.135 [3.4]
.024 [.6]
.945 [24]
0.1Ω 1M
.450 [11.4]
.162 [4.1]
.031 [.8]
.945 [24]
0.1Ω -1M
.598 [15.2]
.213 [5.4]
.031 [.8] 1.25 [31.7]
5K V
0.47Ω -1M .950 [24.1]
.335 [8.5]
.031 [.8] 1.375 [35]
4K V
0.47Ω -1M .695 [17.6]
.250 [6.4]
.031 [.8] 1.25 [31.7]
5K V
240
.335 [8.5]
.031 [.8] 1.375 [35]
120 RSF1A
60
0
1
2
100
75
50
25
0
25
50
3
75
70
RMF1
RMF
½
0
RMF2 RMF3
1
75
50
25
0
±100ppm Typ., ±200 Max.
10,000 MΩ Min.
±2% RSF70, ±3% RSF25, ±3% RMF
2.5x rated W, 5S, nte 2x rated V
±1.0%
±2.0%
±0.2%
±0.5%
.001%/ V
<.1µV/ 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)
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.
1
10
RMF5S RMF5 RMF7
180
60
9
100 125 150 175 200 225 250
AMBIENT TEMPERATURE (°C)
240
120
8
25
50
2
3
4
5
6
7
APPLIED WATTAGE
8
9
10
RMF1/2 to RMF5
RMF5S
& RMF7
75
100 125 150 175 200 225 250
AMBIENT TEMPERATURE (°C)
OPTION P PULSE CAPABILITY (single or infrequent pulse)2
10KW
Peak Wattage
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
4
5
6
7
APPLIED WATTAGE
RSF1A to RSF7B
70
TYPICAL PERFORMANCE CHARACTERISTICS
RSF7B
RSF1B
100
0.47Ω -1M .950 [24.1]
RSF5B
RSF3B
RSF2B
180
---------
d±.004
[.1]
---------
D±.025
[.6]
RSF DERATING
(% 70°C W &V RATING)
L± .032
[.8]
RMF TEMP RISE (°C)
Opt. P
Standard
Max.
P eak
Resistance
Voltage
Pulse
1
R an g e
25°C 70°C Rating Voltage2
Wattage
RMF DERATING
(% 70°C W &V RATING)
SERIES
R SF
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
1KW
RMF7P,RSF7BP
RMF3P,RSF3BP
RMF2P,RSF2BP
RMF1P
RMF1/2P
RSF1AP
100W
10W
1uS
10uS
100uS
1mS
P/N DESIGNATION:
10mS
RSF2B
100mS
- 101 - J
T W
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.
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