ECONOMICAL 1 WATT TO 3 WATT
POWER FILM MELF RESISTORS
RESISTORSꢀCAPACITORSꢀCOILSꢀDELAY LINES
Term.W is
RoHS
MPF SERIES
compliant
& 260°C
compatible
RoHS
FEATURES
RCD’s MPF Series utilize special filming processes and
highest grade materials to achieve high power density, yet
the economical MELF package enables pricing well below
rectangular counterparts. The multilayer coating offers
excellent environmental protection and dielectric strength,
and is resistant to industrial solvents, steam and humidity.
ꢀ High power in small body size
ꢀ Low cost MELF design
ꢀ Wide resistance range: 0.1Ω to 10MΩ
ꢀ Standard tolerance: ±5% (available to ±0.1%)
ꢀ Inherent low inductance power film performance
OPTIONS
ꢀ Option P: Increased Pulse Capability
ꢀ Option 37: Group A Screening per Mil-R-39008
ꢀ Numerous design modifications are available (special
L
D
W
marking, matched sets, increased temperature, etc.)
Inch [mm]
SPECIFICATIONS
RCD
Type
Wattage
Rating
Voltage
Rating1
Resistance Range2
L Max.
D Max.
W (Min.)
MPF1
MPF2S
MPF2
MPF3S
MPF3
1W
2W
2W
3W
3W
300V
350V
400V
400V
400V
0.1Ω to 1MΩ
0.1Ω to 4.7MΩ
0.1Ω to 6.8MΩ
0.1Ω to 6.8MΩ
0.1Ω to 10MΩ
.256 [6.5]
.375 [9.5]
.453 [11.5]
.453 [11.5]
.602 [15.3]
.106 [2.7]
.146 [3.7]
.185 [4.7]
.185 [4.7]
.201 [5.1]
.036 [.9]
.047 [1.2]
.056 [1.4]
.056 [1.4]
.064 [1.6]
1 Not to exceed (PxR), increased working voltages available. 2 Extended range available
√
TYPICAL PERFORMANCE CHARACTERISTICS
PULSE CAPABILITY
10000
Temperature Coefficient
200ppm/°C ≤1M,
350ppm 1M-6.8M,
500ppm >6.8M)
Operating Temperature
-55 to +165°C
1000
100
10
MPF1, 2, 3 Power Derating:
MPF2S, 3S Power Derating:
1.053%/°C >70°C
.714%/°C >25°C
Dielectric Strength
500V
MPF3P
MPF2P, 3SP
MPF2SP
MPF1P
Insulation Resistance
10,000Meg ohm
Solderabilty
95% Min.
1µS
10µS
100µS
1mS
10mS
100mS
Short Time Overload (2.5xW 5S, not to
exceed 2x volt rating)
0.5% MPF1,2,3;
1% MPF2S, 3S
Pulse Duration
Voltage Coefficient
25ppm/V
Pulse capability is dependent on res. value, waveform, repetition rate,
current, etc. Chart is a general guide for Opt. P pulse resistant version,
single pulse, with peak voltage levels not exceeding 1KV MPF1, 1.5KV
MPF2S, 2KV MPF2, 2.5KV MPF3S, 3KV MPF3. Max pulse capability for
standard parts (w/o Opt.P) is 50% less. For improved performance and
reliability, a 30-50% pulse derating factor is recommended, or larger for
frequent pulses, high values, etc. (refer to #R-42). Verify selection by
testing under worst-case conditions. Increased pulse levels available.
Resistance to Solder Heat (245°C,5S)
Temperature Cycling
0.3%
1%
Moisture Resistance
2%
Load Life (1000 hours at rated W)
2% MPF1,2,3;
4% MPF2S, 3S
P/N DESIGNATION:
RCD Type
APPLICATION NOTE
MPF2S
- 102 - J T W
The temp. rise of SM resistors depends largely on heat conduction
through the end terminations, which can vary significantly
depending on PCB material and layout (i.e. pad size, trace area,
copper thickness, air convection, etc). Typical temperature rise at
full rated power is 100°C for MPF1,2,3 and 150°C for MPF2S & 3S
(based on DIN44050 PCB material with 500 sq. mil circuit traces
MPF1, 2, 2S and 1000 sq. mil MPF3,3S). It is recommended to
evaluate product in actual use conditions to ensure the proper
component and PCB layout is utilized.
Options: P, 37 (leave blank if standard)
Resis. Code: ≤1%: 3 signif. figures & multiplier,
e.g. R100= 0.1Ω, 1R00= 1Ω,1000= 100Ω, 1001= 1KΩ.
Resis. Code 2% - 10%: 2 signif. figures & multiplier,
e.g. R10=.1Ω, R15=.15Ω, 1R0=1Ω,100=10Ω, 102=1K, 103=10KΩ
Tolerance : J= 5% (std), D=0.5%, F=1%, G=2%, K=10%
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
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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
FA026D Sale of this product is in accordance with GF-061. Specifications subject to change without notice.
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