COMMERCIAL 1/10 to 1/2 WATT
CARBON FILM MELF RESISTORS
RESISTORS CAPACITORS COILS DELAY LINES
MCF SERIES
RoHS
Term.W is
RoHS
compliant
& 260°C
compatible
Economy-grade pricing!
Wide resistance range (up to 22MegΩ available)
Standard tolerance: ±5% (±2% available)
Series ZCF zero-ohm jumpers available, .02Ω maximum.
Type ZCF10 is rated at 2A, ZCF12, 3A, and ZCF25 at 5A.
ZCF Series marked with a single black band.
Low cost, carbon film MELF’s! Pulse voltage to 3KV!
Quality levels are unsurpassed due to stringent process controls.
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.
OPTIONS
Option Z - high pulse voltage to 3KV
Option 37 - Group A screening per Mil-R-39008
L
W
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
2K V
n/a
3K V
n/a
Resis.
R an g e
3
1K
Ω
- 1M
Ω
1K
Ω
- 1M
Ω
1K
Ω
- 1M
Ω
1K
Ω
- 2.2M
1K
Ω
- 2.2M
L ±.008
[.2]
.079
.135
.135
.232
.232
[2.0]
[3.4]
[3.4]
[5.9]
[5.9]
D ±.008
[.2]
.044
.057
.057
.085
.085
[1.12]
[1.45]
[1.45]
[2.15]
[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.
R an g e
3
1Ω - 1M
Ω
1Ω - 1M
Ω
1Ω - 1M
Ω
1Ω - 2.2M
Ω
1Ω - 2.2M
Ω
.012
.012
.012
.020
.020
[.3]
[.3]
[.3]
[.5]
[.5]
.006 [.15]
.006 [.15]
.006 [.15]
.008 [.2]
.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 (0.1Ω to 22 Meg available).
DERATING
120
% OF RATED POWER
TEMPERATURE COEFFICIENT
(Typ.)
TEMP. COEFFICIENT
(ppm/°c)
-1000
-750
-500
-250
0
10
100
1K
10K
100K
1M
NOMINAL RESISTANCE (Ohms)
10M
100
80
60
40
20
0
25
50
75
100
125
150
175
155°C
200
AMBIENT TEMPERATURE (°C)
CURRENT NOISE
(Typ.)
+20
NOISE INDEX
(db)
0
-20
-40
-60
10
100
1K
10K
100K
1M
10M
NOMINAL RESISTANCE (Ohms)
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 Meg
Ω
0.5%* + .05
Ω
0.5% + .05
Ω
1.0% + .05
Ω
5.0% + .05
Ω
2.5%* + .05
Ω
P/N DESIGNATION:
MCF25
- 102 - J T W
RCD Type
Options:
Z, 37 (leave blank if standard)
3-Digit Resis. Code:
2 signif. digits & multiplier
1R0=1Ω, 100=10Ω, 101=100Ω, 102=1KΩ,
103=10K,104=100K, 105=1M, 106=10M, etc.
Tolerance:
J = 5% (standard), K =10%, G =2%
Packaging:
B = Bulk, T = Tape & Reel
Termination:
W= Lead-free, Q= Tin/Lead (leave blank if either
is acceptable, in which case RCD will select based on lowest
price and quickest delivery
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
FA090A Sale of this product is in accordance with GF-061. Specifications subject to change without notice.
21
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