Passive Components:
MMI 300 Series
Passive
Components
Spiral Inductors
Description
The
MicroMetrics
MMI 300 series of
Spiral Inductors are formed by
photolithography and plating tech-
niques on quartz substrates. They
eliminate the need for hand forming
and ”staking“ of coil in hybrid circuits.
They provide uniformity, durability
and repeatability in circuit fabrication.
The coils are polyimide coated to pro-
tect from ambient contaminants, and
to eliminate the need for conformal
coating. Quartz substrates are rugged
and reduce dielectric losses. Chips
may be bonded using either conduc-
tive or non conductive epoxies, and
wire bonded with gold wire or ribbon
by thermocompression bonding.
Applications
The Spiral Inductors are ideally suited
for bias injection into oscillators,
amplifiers and microwave switches
(bias tees). They can also be used to
bias tuning varactors, PIN diodes,
transistors and monolithic circuits.
EQUIVALENT CIRCUIT
Ls
Rs
Dimensions in Inches
Features
• No Need for ”Staking“ Coil
• Passivated Protective Coating Over Coil
• Dimensional Uniformity
• Planar Solid Structure Coil
Packaging
• Chip
Chip Outline
INSIDE DIAMETER,
di = .0094
±
.0002
di
A
GOLD BONDING PADS
.003 x .003
B
C
DIMENSIONS: INCHES
DIM “A”
MAX
Cs
DIM “B”
MAX
.040
.045
.050
.065
DIM “C”
MAX
.012
.012
.012
.012
Part
Number
MMI301
MMI302
MMI303
MMI304
.040
.045
.050
.065
82
MicroMetrics, Inc.
136 Harvey Road, Building C, Londonderry, NH 03053
Voice: 603-641-3800, Fax: 603-641-3500, Internet: www.micrometrics.com, E-mail: serv@micrometrics.com
Passive Components:
MMI 300 Series
Electrical Characteristics
# of
Turns
Inductance
Ls(nH)
MIN/TYP/MAX
12/15/18
24/30/36
42/50/58
67/75/83
Series
Resistance,Rs
DC
1GHz
2.8
4.0
6.0
8.5
4.5
6.0
8.5
15
Q
At Ft
MIN/MAX
25/30
26/30
23/27
20/24
Test
Frequency,Ft
(GHz)
1.5
1.2
1.0
1.0
Resonant
Frequency,Fr
(GHz)
6.4
5.3
4.2
3.0
Part
Number
MMI301
MMI302
MMI303
MMI304
5
1
/
2
7
1
/
2
9
1
/
2
12
1
/
2
Notes:
Ls, Rs and Fr data measured using an HP 8510 network analyzer.
Inductor cross section is approximately 16 microns wide and 5 microns thick.
Maxium current rating: 250 mA.
Other values available upon request.
MicroMetrics, Inc.
136 Harvey Road, Building C, Londonderry, NH 03053
Voice: 603-641-3800, Fax: 603-641-3500, Internet: www.micrometrics.com, E-mail: serv@micrometrics.com
Passive
Components
83
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