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RF & MICROWAVE
SERIES
A150
ULTRAMINIATURE
BROADBAND
ATTENUATOR RELAYS
DESCRIPTION
The Series A150 ultraminiature Attenuator Relays are designed for
attenuating RF signals in 50-ohm systems over a frequency range from DC
to 3 GHz. Their low profile and small grid spacing makes them ideal for use
when packaging density is a prime
consideration. The A150 relays eliminate
the need for additional external
resistors.
These single section, switchable attenuator relays have internal matched thin
film attenuator pads in “L, “T” or “Pi” configurations, as applicable. Relays are
available in fixed increments of 1, 2, 3, 4, 5, 6, 8, 10, 16 and 20 dB, which
can used singly or in combination to achieve the attenuation levels desired.
The A150 attenuator relay features:
Unique uni-frame motor design which provides high magnetic efficiency
and mechanical rigidity.
Minimum mass components and welded construction for maximum
resistance to shock and vibration.
Advanced cleaning techniques which assures internal cleanliness.
Gold plated, precious metal contacts, which provide excellent
intermodulation performance.
Flat amplitude vs. frequency response.
High isolation between control and signal path.
Stable attenuation vs. temperature.
Excellent phase linearity.
Highly resistant to ESD.
Patent No. 5,315,273
INTERNAL CONSTRUCTION
Armature
Stationary Contact
Moving Contact
Attenuator Pad/
Contact Assembly
SCHEMATIC DIAGRAM
3
2
1
5
6
7
Terminal view. Case ground.
ENVIRONMENTAL AND
PHYSICAL SPECIFICATIONS
Temperature
(Ambient)
Storage –65°C to +125°C
Operating –55°C to +85°C
Vibration
(General Note 1) 10 g’s to 500 Hz
Shock
(General Note 1)
30 g’s,
6 msec, half-sine
Enclosure Hermetically sealed
Weight 0.11 oz. (3.12g) max.
SERIES
DESIGNATION RELAY TYPE
A150 Attenuator Relay series
©2003 TELEDYNE RELAYS SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE A150 Page 2
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RF & MICROWAVE
1 dB ATTENUATOR 2 dB ATTENUATOR
3 dB ATTENUATOR 4 dB ATTENUATOR
5 dB ATTENUATOR 6 dB ATTENUATOR
VSWR ATTENUATION (dB)
0.70
0.80
0.90
1.00
1.10
1.20
1.301.0
1.2
1.4
1.6
1,000 2,000 3,000 4,000
FREQUENCY (MHz)
VSWR
VSWR ATTENUATION (dB)
VSWR ATTENUATION (dB)VSWR ATTENUATION (dB)
VSWR ATTENUATION (dB)
FREQUENCY (MHz)
FREQUENCY (MHz)FREQUENCY (MHz)
FREQUENCY (MHz) FREQUENCY (MHz)
1.70
1.80
1.90
2.00
2.10
2.20
2 .301.0
1.2
1.4
1.6
1,000 2,000 3,000 4,000
VSWR
VSWR
VSWR
VSWR
VSWR
2.70
2.80
2.90
3.00
3.10
3.20
3 .301.0
1.2
1.4
1.6
1,000 2,000 3,000 4,000
4.40
4.60
4.80
5.00
5.20
5.40
5.601.0
1.2
1.4
1.6
1,000 2,000 3,000 4,000
VSWR ATTENUATION (dB)
5.40
5.60
5.80
6.00
6.20
6.40
6.601.0
1.2
1.4
1.6
1,000 2,000 3,000 4,000
3.70
3.80
3.90
4.00
4.10
4.20
4.301.0
1.2
1.4
1.6
1,000 2,000 3,000 4,000
ATTENUATION
ATTENUATION
ATTENUATION
ATTENUATION
ATTENUATION
ATTENUATION
SERIES A150
TYPICAL RF PERFORMANCE (Notes 2, 3 and 4)
A150 Page 3SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE ©2003 TELEDYNE RELAYS
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RF & MICROWAVE
7.40
7.60
7.80
8.00
8.20
8.40
8.601.0
1.2
1.4
1.6
1,000 2,000 3,000 4,000
9.40
9.60
9.80
10.00
10.20
10.40
10.601.0
1.2
1.4
1.6
1,000 2,000 3,000 4,000
15.40
15.60
15.80
16.00
16.20
16.40
16.601.0
1.2
1.4
1.6
1,000 2,000 3,000 4,000
19.40
19.60
19.80
20.00
20.20
20.40
20.601.0
1.2
1.4
1.6
1,000 2,000 3,000 4,000
0.0
0.2
0.4
0.6
0.8
1.0
1.21.0
1.2
1.4
1.6
1,000 2,000 3,000 4,000
8 dB ATTENUATOR
VSWR ATTENUATION (dB)
FREQUENCY (MHz)
VSWR
16 dB ATTENUATOR
VSWR ATTENUATION (dB)
FREQUENCY (MHz)
VSWR
THROUGH PATH
VSWR INSERTION LOSS (dB)
FREQUENCY (MHz)
20 dB ATTENUATOR
VSWR ATTENUATION (dB)
FREQUENCY (MHz)
VSWR
10 dB ATTENUATOR
VSWR ATTENUATION (dB)
FREQUENCY (MHz)
VSWR
ATTENUATION
ATTENUATION
INSERTION LOSS
VSWR
ATTENUATION
ATTENUATION
SERIES A150
TYPICAL RF PERFORMANCE (Notes 2, 3 and 4)
©2003 TELEDYNE RELAYS SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE A150 Page 4
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RF & MICROWAVE
PARAMETER MINIMUM TYPICAL MAXIMUM UNITS CONDITION
Insertion Loss
0.1 0.25 dB DC–1 GHz
0.2 0.35 dB 1–2 GHz
0.3 .055 dB 2–3 GHz
VSWR (Through path)
1.10 1.20 DC–1 GHz
1.20 1.25 1–2 GHz
1.25 1.30 2–3 GHz
VSWR (Attenuated path)
1.20 1.25 DC–1 GHz
1.30 1.35 1–2 GHz
1.40 1.45 2–3 GHz
ATTENUATION MINIMUM TYPICAL MAXIMUM UNITS CONDITION
1
0.95 1.0 1.05 dB DC–1 GHz
0.925 1.0 1.075 dB 1–2 GHz
0.875 1.0 1.125 dB 2–3 GHz
2
1.9 2.0 2.1 dB DC–1 GHz
1.85 2.0 2.15 dB 1–2 GHz
1.75 2.0 2.25 dB 2–3 GHz
3
2.85 3.0 3.15 dB DC–1 GHz
2.77 3.0 3.23 dB 1–2 GHz
2.62 3.0 3.38 dB 2–3 GHz
4
3.8 4.0 4.2 dB DC–1 GHz
3.7 4.0 4.3 dB 1–2 GHz
3.5 4.0 4.5 dB 2–3 GHz
5
4.75 5.0 5.25 dB DC–1 GHz
4.62 5.0 5.38 dB 1–2 GHz
4.37 5.0 5.63 dB 2–3 GHz
6
5.7 6.0 6.3 dB DC–1 GHz
5.55 6.0 6.45 dB 1–2 GHz
5.25 6.0 6.75 dB 2–3 GHz
8
7.88 8.0 8.12 dB DC–1 GHz
7.76 8.0 8.24 dB 1–2 GHz
7.52 8.0 8.48 dB 2–3 GHz
10
9.85 10.0 10.15 dB DC–1 GHz
9.7 10.0 10.3 dB 1–2 GHz
9.4 10.0 10.6 dB 2–3 GHz
16
15.76 16.0 16.24 dB DC–1 GHz
15.52 16.0 16.48 dB 1–2 GHz
15.04 16.0 16.96 dB 2–3 GHz
20
19.8 20.0 20.2 dB DC–1 GHz
19.6 20.0 20.4 dB 1–2 GHz
19.0 20.0 21.0 dB 2–3 GHz
SERIES A150
RF PERFORMANCE (–55°C to +85°C) (Notes 2, 3 and 4)
A150 Page 5SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE ©2003 TELEDYNE RELAYS
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RF & MICROWAVE
SERIES A150
GENERAL PERFORMANCE (–55°C TO +85°C)
ELECTRICAL SPECIFICATION (–55°C TO +85°C, unless otherwise specified)
PART NUMBER (Note 7) A150-dB-5 A150-dB-12 A150-dB-15 A150-dB-26
Coil Voltage Vdc (Note 6) Nom. 512 15 26.5
Max. 5.8 16.0 20.0 32.0
Coil Resistance Ohms ±20% @25°C 50 390 610 1,560
Pick-up Voltage Vdc Max. @25°C 3.8 9.0 11.3 18.0
Switching Time ms (Note 8) Max. 4.0
Typ. 2.0
Insulation Resistance 1,000 MΩtypical (all mutually isolated points)
Dielectric strength 300 VRMS / 60 Hz typical (at sea level)
PARAMETER MINIMUM TYPICAL MAXIMUM UNITS
Operating Frequency (Note 2) 0.0 3.0 GHz
Power (Notes 5 and 6) 1.0 Watt
Impedance 50 Ohms
1
2
3
.335 MAX.
(8.51)
.375 MAX.
(9.53)
.700 MIN.
(17.78)
.435 MAX.
(11.05)
.280
(7.11)
.200 ±.01
(5.08 ±5.08)
.475 MAX.
(12.07)
.150 ±.10 TYP.
(3.81 ±.25)
.035 REF.
(.89)
.031 REF.
(.79)
Dimensions are show in inches (millimeters).
Terminal numbers shown are for reference only.
Leads 1 and 7 are grounded to the case.
.017 DIA.
+.002
–.001
.43 +.05
–.03
5
6
7
()
OUTLINE DIMENSIONS
CASE DETAIL
A150 – XX – XX / S Q
GENERAL NOTES:
1. Contacts will exhibit no contact chatter in excess of 10 μs or
transfer in excess of 1 μs.
2. Relays may be operated at higher frequencies with reduced RF
performance.
3. For optimal RF performance, solder case to RF ground plane.
4. Attenuation values shown are with reference to the through path
(low loss state).
5. Power handling for case temperatures of –55°C to +55°C is
1 Watt. Derate power handling 25 mW/°C above +55°C. Case
measurement point is adjacent to the relay tab.
6. Do not operate coil at maximum coil voltage continuously.
7. Insert attenuation value, see part numbering system.
8. Switching time includes bounce.
9. The slash and characters appearing after the slash are not
marked on the relay.
10. Unless otherwise specified, relays will be supplied with either
gold-plated or solder-coated leads.
TELEDYNE RELAYS PART NUMBERING SYSTEM
FOR A150 ATTENUATOR RELAYS
Series
designator
Attenuation
value (dB)
Nominal coil
voltage
S=.187" leads
See Note 9
Q=Solder-Coated Leads
G=Gold-Plated Leads
(Notes 9 & 10)
PARAMETER Typical at low level
Contact life rating 10,000,000 cycles
Pad designation and
bottom view dimensions Height For use with the following: Dim. H
Max.
“M4” Pad for TO-5
ER411T
ER412, ER412D, ER412DD .295 (7.49)
712, 712D, 712TN,
RF300, RF310, RF320 .300 (7.62)
ER420, ER422D, ER420DD, 421,
ER421D, ER421DD, ER422, ER422D,
ER422DD, 722, 722D, RF341
.305 (7.75)
ER431T, ER432T,
ER432, ER432D, ER432DD .400 (10.16)
732, 732D, 732TN, RF303, RF313,
RF323 .410 (10.41)
RF312 .350 (8.89)
“M4” Pad for TO-5
ER411, ER411D, ER411DD .295 (7.49)
ER431, ER431D, ER431DD .400 (10.16)
RF311 .300 (7.62)
RF331 .410 (10.41)
“M4” Pad for Centigrid®
172, 172D .305 (7.75)
ER114, ER114D, ER114DD,
J114, J114D, J114DD .300 (7.62)
ER134, ER134D, ER134DD,
J134, J134D, J134DD .400 (10.16)
RF100 .315 (8.00)
RF103 .420 (10.67)
“M9” Pad for Centigrid®
122C, A152 .320 (8.13)
ER116C, J116C .300 (7.62)
ER136C, J136C .400 (10.16)
RF180 .325 (8.25)
A150 .305 (7.75)
Notes:
1. Spacer pad material: Polyester  lm.
2. To specify an “M4” or “M9” spacer pad, refer to the mounting variants portion of the part numbering
example in the applicable datasheet.
3. Dimensions are in inches (mm).
4. Unless otherwise speci ed, tolerance is ± .010 (.25).
5. Add 10 m to the contact resistance show in the datasheet.
6. Add 0.01 oz. (0.25 g) to the weight of the relay assembly shown in the datasheet.
Ø.150
[3.81]
(REF)
Dim H
MAX
Dim H
MAX
Dim H
MAX
.156
[3.96]
(REF)
.256
[6.5]
(REF)
Dim H
MAX
Appendix A: Spacer Pads
© 2008 Teledyne Relays SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
Pad designation and
bottom view dimensions Height For use with the following: Dim. H
Max.
“M” Pad 5/ 6/
ER411T, J411T, ER412, ER412D
ER412DD, J412, J412D, J412DD
ER412T, J412T
.388 (9.86)
712, 712D, 712TN .393 (9.99)
ER431T, J431T, ER432, ER432D
ER432DD, J432, J432D, J432DD
ER432T, J432T
.493 (12.52)
732, 732D, 732TN .503 (12.78)
ER420, J420, ER420D, J420D
ER420DD, J420DD, ER421, J421
ER421D, J421D, ER421DD
J422D, ER422DD, J422DD, 722
.398 (10.11)
“M2” Pad 7/ 8/
ER411T
ER412, ER412D, ER412DD
J412, J412D, J412DD
.441 (11.20)
712, 712D .451 (11.46)
ER421, ER421D, ER421DD
722, 732D .451 (11.46)
ER431T
ER432, ER432D, ER432DD .546 (13.87)
732, 732D .556 (14.12)
“M3” Pad 5/ 6/ 9/
ER411, ER411D, ER411DD
ER411TX
ER412X, ER412DX, ER412DDX
ER412TX
.388 (9.86)
712X, 712DX, 712TNX .393 (9.99)
ER420X, ER420DX, ER420DDX
ER421X, ER421DX, ER421DDX
ER422X, ER422DX
ER422DDX, 722X, 722DDX
.398 (10.11)
ER431, ER431D, ER431DD
ER431TX
ER432X, ER432DX, ER432DDX
ER432TX
.493 (12.52)
732X, 732DX, 732TNX .503 (12.78)
Notes:
1. Spreader pad material: Diallyl Phthalate.
2. To specify an “M”, “M2” or “M3” spreader pad, refer to the mounting variants portion of the part number example
in the applicable datasheet.
3. Dimensions are in inches (mm).
4. Unless otherwise speci ed, tolerance is ± .010” (0.25).
5/. Add 25 m to the contact resistance shown in the datasheet.
6/. Add .01 oz. (0.25 g) to the weight of the relay assembly shown in the datasheet.
7/. Add 50 m to the contact resistance shown in the datasheet.
8/. Add 0.025 oz (0.71 g) to the weight of the relay assembly shown in the datasheet.
9/. M3 pad to be used only when the relay has a center pin (e.g. ER411M3-12A, 722XM3-26.)
.370 [9.4]
MAX SQ
.150
[3.81]
.100
[2.54]
.200
[5.08]
.300
[7.62]
.100
[2.54]
Dim H
MAX
.370
[9.4]
MIN
.014
[0.36]
(REF)
.390 [9.91]
SQ
.300
[7.62]
.100
[2.54]
.300
[7.62]
.100
[2.54] .150
[3.81]
.150
[3.81]
.130
[3.3]
Dim H
MAX
.370 [9.4]
MAX SQ
.150
[3.81]
.100
[2.54]
.200
[5.08]
.300
[7.62]
.100
[2.54]
Dim H
MAX
.370
[9.4]
MIN
.014
[0.36]
(REF)
Appendix A: Spreader Pads
(800) 284-7007 • www.teledynerelays.com +44 (0) 1236 453124 • www.teledyne-europe.com © 2008 Teledyne Relays
.100
[2.54]
.100
[2.54]
.100
[2.54]
"Y" POSITION
"Z" POSITION
.100
[2.54]
.100
[2.54]
.100
[2.54]
"W" POSITION
"U" POSITION
(ER116C and ER136C only)
"X" POSITION
"Z" POSITION
"Y" POSITION
.050
[1.27]
36°±3°
Ø.200
[Ø5.08]
"Z" POSITION
"Y" POSITION
"X" POSITION
45°±3°
"Z" POSITION
"Y" POSITION
Ø.200
[Ø5.08]
Centigrid® Relays:
RF100, RF103, ER114, ER134, 172
Centigrid® Relays:
RF180, ER116C, 122C, ER136C
TO-5 Relays:
ER411T, ER412, ER412T, ER420, ER421, ER422,
ER431T, ER432, ER432T, 712, 712TN, 400H, 400K,
400V, RF300, RF303, RF341, RF312, RF310, RF313,
RF320, RF323
TO-5 Relays:
ER411, ER431, RF311, RF331
NOTES
1. Terminal views shown
2. Dimensions are in inches (mm)
3. Tolerances: ± .010 (±.25) unless otherwise speci ed
4. Ground pin positions are within .015 (0.38) dia. of true position
5. Ground pin head dia., 0.035 (0.89) ref: height 0.010 (0.25) ref.
6. Lead dia. 0.017 (0.43) nom.
Indicates ground pin position
Indicates glass insulated lead position
Indicates ground pin or lead position
depending on relay type
Appendix A: Ground Pin Positions
© 2008 Teledyne Relays SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE