COMMERCIAL 1/10 to 1/2 WATT
CARBON FILM MELF RESISTORS
RESISTORSCAPACITORSCOILSDELAY LINES
MCF SERIES
RoHS
Term.W
is Pb-free
and RoHS
compliant
Economy-grade pricing!
Wide resistance range (up to 22MegW available)
Standard tolerance: ±5% (±2% available)
Series ZCF zero-ohm jumpers available, .02W maximum.
Type ZCF10 is rated at 2A, ZCF12 at 3A, and ZCF25 at 5A.
ZCF Series marked with a single black band.
Low cost, carbon film MELFs! Pulse voltage to 3KV!
Quality levels are unsurpassed due to stringent process con-
trols. Automated Far East production results in low prices. RCD
offers the industry’s widest range of sizes and options including
zero ohm jumpers and high pulse voltage versions.
W
OPTIONS
L
Option Z - high pulse voltage to 3KV
Option 37 - Group A screening per Mil-R-39008
D
Inch [mm]
SPECIFICATIONS
Series MCF Voltage Rating
RCD
Type
MCF10
MCF12
MCF22
MCF25
MCF25S
1
2
t
Series MCFZ Voltage Rating
Voltage
Rating
1
n/a
250V
n/a
300V
n/a
Max.
Pulse
Voltage
2
n/a
2KV
n/a
3KV
n/a
Resis.
Range
3
1KW - 1MW
1KW - 1MW
1KW - 1MW
1KW - 2.2M
1KW - 2.2M
L ±.008
[.2]
.079 [2.0]
.135 [3.4]
.135 [3.4]
.232 [5.9]
.232 [5.9]
D ±.008
[.2]
.044 [1.12]
.057 [1.45]
.057 [1.45]
.085 [2.15]
.085 [2.15]
W (Min.)
t (Max.)
Wattage
at 70°C Voltage
Rating
1
.10
.125
.25
.25
.50
100V
200V
250V
250V
250V
Max.
Pulse
Voltage
2
200V
400V
400V
600V
600V
Resis.
Range
3
1W - 1MW
1W - 1MW
1W - 1MW
1W - 2.2MW
1W - 2.2MW
.012 [.3] .006 [.15]
.012 [.3] .006 [.15]
.012 [.3] .006 [.15]
.020 [.5] .008 [.2]
.020 [.5] .008 [.2]
Maximum working voltage determined by E =
√
PR , E should not exceed value listed in column above. Dielectric strength is rated the same as the maximum working voltage.
Peak pulse voltage is highly dependent on pulse waveform and resistance value. Voltage levels given indicate maximum levels for the series. These levels are not attainable for all values and
pulse waveforms. Consult factory for application assistance.
3
Consult factory for resistance values outside of standard range (0.1W to 22 Meg available).
DERATING
120
% OF RATED POWER
100
80
60
40
20
0
-55
25
50
TEMPERATURE COEFFICIENT
(Typ.)
TEMP. COEFFICIENT
(ppm/°c)
-1000
-750
-500
-250
0
10
100
1K
10K
100K
NOMINAL RESISTANCE (Ohms)
1M
10M
-----------------------------
CURRENT NOISE
(Typ.)
-----
100
125
150
175
200
NOISE INDEX
(db)
+20
0
-20
-40
-60
10
100
1K
10K
100K
1M
10M
155°C
75
70
AMBIENT TEMPERATURE (°C)
PERFORMANCE CHARACTERISTICS
Operating Temperature Range
Solderability (5 sec. @ 230°C)
Insulation Resistance (Dry)
Short-Time Overload (5 sec. @ 2.5x power
not to exceed 2x voltage rating)
Resistance to Solder Heat (260°C, 5 sec.)
Temperature Cycling (-50°C + 120°C)
Moisture Resis. (MIL-Std-202, Method 106)
Load Life (1000 hours rated power)
* Multiply by 2 for MCF22 and MCF25S Series.
-55 to +155°C
95% coverage
10,000 MegW
0.5%* + .05W
0.5% + .05W
1.0% + .05W
5.0% + .05W
2.5%* + .05W
NOMINAL RESISTANCE (Ohms)
P/N DESIGNATION:
RCD Type
MCF25
-
102 -
J
T
W
3-Digit Resis. Code:
2 signif. digits & multiplier
1R0=1W, 100=100W, 101=100W, 102=1KW,
103=10K, 104=1M, 105=10M, etc.
Tolerance:
J = 5% (standard), K =10%, G =2%
Packaging:
B = Bulk, T = Tape & Reel
Termination:
W= Lead-free (std), 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
21
FA090A
Sale of this product is in accordance with GF-061. Specifications subject to change without notice.
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