Metal Film Precision MELF Resistor
Type SMA series
Key Features
Excellent overall stability
Sn termination on Ni barrier
layer
Tight tolerance down to
±0.1%
Extremely low TCR down to
±10 PPM/°C
SMD enabled structure
Lead-free and RoHS
compliant
Applications
Industrial
Telecommunication
Medical Equipment
Measurement/Testing
Equipment
The SMA series is a metal film precision MELF resistor with an SMD
enabled structure, tight tolerance and low TCR.
It comes in two sizes and four power ratings to 1W, is lead free and RoHS
compliant.
Standard Electrical Specifications
Size
Power
Rating
at 70°C
Max.
Operating
Voltage
Max.
Overload
Voltage
Resistance Range
±0.1%
±0.25%
±0.5%
10Ω-
KΩ
10Ω-300KΩ
±1%
±5%
TCR
(PPM/°C)
±10
±15
±25
±50
±100
-
±10
±15
±25
±50
±100
-
0.25W
0204
Jumper:
2A
200V
400V
1
Ω- MΩ
Ω-
MΩ
-
.
Ω-4.7MΩ
. Ω-10MΩ
. Ω-10MΩ
Ω- MΩ
Ω<
10Ω-
Ω-
Ω
KΩ
KΩ
.
Ω-4.7MΩ
. Ω-10MΩ
. Ω-10MΩ
0.5W
0207
Jumper:
4A
300V
600V
Ω-
MΩ
Ω- MΩ
Ω- MΩ
-
Ω<
Ω
6-1773446-1 CIS WR 10/2017
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
Metal Film Precision MELF Resistor
High Power Rating Electrical Specifications
Size
Power
Rating
at 70°C
Max.
Operating
Voltage
Max.
Overload
Voltage
Resistance Range
±0.1%
±0.25%
Ω- MΩ
Ω
-
MΩ
-
Ω-1
Ω- MΩ
0207
1W
350V
700V
Ω-
MΩ
Ω
-
MΩ
KΩ
.
±0.5%
Ω-1
0204
0.4W
200V
400V
Ω-
MΩ
KΩ
.
Ω-1MΩ
. Ω-1MΩ
. Ω- MΩ
Ω-1MΩ
±1%
±5%
TCR
(PPM/°C)
±15
±25
±50
±100
±15
±25
±50
±100
. Ω-10MΩ
-
. Ω-10MΩ
Operating
Voltage=√ P*R or Max. Operati g Voltage listed a o e, hi he er is lo er
O erload Voltage= . *√ P*R or Max. O erload Voltage listed a o e, hi he er is lo er.
RCWV Rated Co ti uous Worki g Voltage =√ P*R or Max. Operati g Voltage hichever
is lower.
Operating temperature range - -55℃~155℃
Derating Curve
Construction and Dimensions
Type
SMA0204
SMA0207
L (mm)
3.50±0.2
5.90±0.2
ΦD
1.40±0.15
2.20±0.20
K (mm)
0.8±0.1
1.3±0.1
Weight 1,000EA
(g)
18.7
80.9
6-1773446-1 CIS WR 10/2017
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
Metal Film Precision MELF Resistor
Recommended
Land Pattern
Type
SMA0204
SMA0207
A (mm)
1.6
3.0
B (mm)
1.2
1.7
C (mm)
1.6
2.4
Soldering Condition
Pulse withstanding capacity
The single impulse graph is the result of 50 impulses of rectangular shape applied at one-minute
intervals. The limit of acceptance was a shift in resistance of less than 1% from the initial value.
The power applied was subject to the restrictions of the maximum permissible impulse voltage
graph shown
SMA Series Single Pulse(100 Ohm)
6-1773446-1 CIS WR 10/2017
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
Metal Film Precision MELF Resistor
Continuous Pulse
The continuous load graph was obtained by applying repetitive rectangular pulses where the
pulse period was adjusted so that the average power dissipated in the resistor was equal to its
rated power at 70°C. Again the limit of acceptance was a shift in resistance of less than 1% from
the initial value
SMA series Continuous Pulse (100 Ohm)
SMA series Pulse Voltage (100 Ohm)
6-1773446-1 CIS WR 10/2017
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
Metal Film Precision MELF Resistor
Frequency behaviour
Resistors are designed to function according to ohmic laws. This is basically true of resistors for
frequencies up to 100kHz. At higher frequencies, there is an additional contribution to the
impedance by an ideal resistor switched in series with a coil and both switched parallel to a
capacitor. The values of the capacitance and inductance are mainly determined by the
dimensions of the terminations and the conductive path length.
The environment surrounding components has a large influence on the behavior of the
component on the printed-circuit board.
Frequency Vs. Impedance
SMA0204
Frequency Vs Phase Angle
SMA0204
6-1773446-1 CIS WR 10/2017
Dimensions in
millimetres unless
otherwise specified
Dimensions Shown for
reference purposes only.
Specifications subject to
change
For Email, phone or live chat,
go to: www.te.com/help
stm32/stm8
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