This brochure introduces two new series of connectors that extend SMA performance beyond the
MIL-PRF-39012
upper frequency limit of 18 GHz, while maintaining MIL-STD-348 mating characteristics for backward compatibility with
standard SMA connectors when required.
With both 26.5-GHz precision types and 27.0-GHz high-performance types available, you can choose the best price /
performance balance for your application, with no need to “overspecify.”
This brochure features configurations to fulfill most standard applications, but any item shown can be customized for
your specific needs.
SMA 26.5-GHz Connectors (Page 2
)
These extended-frequency , precision SMA series
connectors feature maximum VSWR of 1.15:1 from
DC to 18 GHz, and 1.25:1 from 18 to
26.5 GHz.
Along with cable connectors for semi-rigid cable,
our SMA 26.5-GHz line includes receptacles with
post contacts and integral metal contact rings, and
types in a variety of sizes.
These receptacles are available as
jacks or plugs, each with a choice of air or PTFE
rear dielectric matching sections, and with or
without EMI gaskets.
The
aceable receptacles are available for
us
e with hermetic seals or accessory pins with
diameters of .012, .015, .018, .020, or .036 inches.
Standard hermetic seals are also shown in this
brochure, and can be mo to a wide range
of
to match your application
requirements.
Three types of SMA 26.5-GHz adapters are also
included in this series, as are bulkhead receptacles.
Performance Features:
Mode free through 26.5 GHz
Low
loss (VSWR)
Low Insertion Loss
Low RF Leakage > -100 dB
Consistent Unit to Unit Performance
All materials meet the Outgassing Requirements of
NASA Publication 1124
SMA 27.0-GHz Connectors (Page 16
)
These high-performance SMA connectors feature maximum
VSWR of 1.10:1 from DC to 18 GHz, and 1.15:1 from
18 to 27.0 GHz.
They are designed to provide enhanced durability and
reliability in a
grade” production connector .
The internal design is optimized using state-of-the-art
Electromagnetic Finite Element Analysis model simulation to
provide low
with mode free operation to
27.0 GHz.
In ad
dition, this connector series provides -100 dB RF leakage
due to the precision on the interface and mounting
surfaces to assure a solid 360-degree contact in the critical RF
return path, and the absence of epoxy holes in the connector
body. The design of the internal structure provides a reliable and
symmetrical axial captivation by mechanical means with a mini-
mal disturbance to the transmission line characteristics and has a
maximum continuous service temperature of 165˚ C.
SMA 27.0 GHz replaceable connectors are available in
six common mounting ange co ations. Both the d
replaceable and thread-in (spark plug) connectors are available
for use with hermetic seals or accessory pins with diameters
of .009, .012, .015, .018, .020, and .036 inches. Standard
hermetic seals are also shown in this brochure, and can be
m
to
a wide range of
urations to match your
application
requirements.
These connectors are machined to exacting tolerances and the
highest quality standards on modern CNC turning centers, and
assembly is tightly controlled and monitored to ensure peak
consistency of performance from unit to unit.
Performance Features:
Mode free through 27.0 GHz
Low
loss (VSWR)
Low Insertion Loss
Low RF Leakage > -100 dB
Extended Operating Temperature (+165˚ C)
Phase Stable
Consistent Unit to Unit Performance
Rigid center contact captivation using high temperature Ultem
1000 support bead
All materials meet the Outgassing Requirements of NASA
Publication 1124
Extended-Frequency SMA Connectors
Extended-Frequency SMA Connectors
1
(
978
)
927-1060
FAX
(
978
)
922-6430
www.deltarf.com sales@deltarf.com
These extended-frequency, precision SMA connectors feature maximum VSWR of 1.15:1 from DC to 18 GHz, and 1.25:1
from 18 to 26.5 GHz.
Along with cable connectors for semi-rigid cable, our SMA 26.5-GHz line includes receptacles with post contacts and integral
metal contact rings, and eld-replaceable types in a variety of ange sizes. These eld-replaceable receptacles are available as
jacks or plugs, each with a choice of air or PTFE rear dielectric matching sections, and with or without EMI gaskets.
The eld-replaceable receptacles are available for use with hermetic seals or accessory pins with diameters
of .012, .015, .018,
.020, or .036 inches. Standard hermetic seals are also shown in this brochure, and can be modied to a
wide range of congurations to match your application requirements.
Three types of SMA 26.5-GHz adapters are also included in this series, as are bulkhead receptacles.
We are continually expanding our SMA 26.5-GHz product line and other high-frequency products, so please call if you don’t
see what you need.
VSWR
Two connectors tested, mounted back-to-back with a hermetic seal as shown
at left. Maximum VSWR 1.20:1 @ 24.36 GHz (1.095:1 for each connector.)
These results are typical and valid only for connectors set up for testing in the
conguration shown. Hermetic seal attachment method and other circuitry
characteristics will aect VSWR of the completed component.
Test Setup
Delta P/N
1396-000-K921-026
Delta P/N
41-10039-01-AU
Mounting plate
As tested
2 4
1.05
1.10
1.15
1.20
6 8 10 18 20 22 24 26 27
VSWR
12 14 16
Frequency (GHz)
1.25
Interface Dimensions and Specications ............4
Cable Connectors .........................................................5
Panel Receptacles—Post Contact ..........................6
Field Replaceable Panel Jack Receptacles—
Air Dielectric, No EMI Gasket....................................7
Air Dielectric, With EMI Gasket ................................8
PTFE Dielectric, No EMI Gasket................................9
PTFE Dielectric, With EMI Gasket ...........................10
Field Replaceable Panel Plug Receptacles—
Air Dielectric, No EMI Gasket...................................11
Air Dielectric, With EMI Gasket ...............................12
PTFE Dielectric, No EMI Gasket...............................13
PTFE Dielectric, With EMI Gasket ...........................14
Bulkhead Jack Receptacles ................................15
Adapters Within Series.........................................15
Accessory Pins ........................................................15
Hermetic Seals........................................................16
Drilling Dimensions—
Hermetic Seals........................................................16
Replacement EMI Gaskets..................................16
Drilling Dimensions—
Panel-Mount Receptacles...................................27
Competitive Cross-Reference ...........................28
Index by Part Number.........................................32
About Delta.............................................................34
See next page for interface dimensions and specications.
Test Data
General Description
Contents
2
(
978
)
927-1060
FAX
(
978
)
922-6430
www.deltarf.com sales@deltarf.com
SMA 26.5-GHz Connectors