© 2007 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com RF311/RF331 Page 1
RF311RF331\022007\Q1
INTERNAL CONSTRUCTION
SERIES
RF311
RF331
BROADBAND
HIGH REPEATABILITY
TO-5 RELAY
SPDT
DC–8 GHz
PERFORMANCE FEATURES
The ultraminiature RF311 and RF331 relays are
designed to provide improved RF signal repeatability
over the frequency range. These relays are highly
suitable for use in attenuator and other RF circuits. The
RF311 and RF331 feature:
•High repeatability.
• Exceptional bandwidth.
• Metal enclosure for EMI shielding.
• Ground pin option to improve case grounding.
• High isolation between control and signal paths.
• Highly resistant to ESD.
CONSTRUCTION FEATURES
The following unique construction features and
manufacturing techniques provide excellent resistance
to environmental extremes and overall high reliability:
•Uni-frame motor design provides high magnetic
efficiency and mechanical rigidity.
•Minimum mass components and welded construction
provide maximum resistance to shock and vibration.
•Advanced cleaning techniques provide maximum
assurance of internal cleanliness.
•Gold-plated precious metal alloy contacts ensure
reliable switching.
•Hermetically sealed.
• RoHS compliant.
SERIES
DESIGNATION RELAY TYPE
RF311 SPDT RF TO-5 relay
RF331 Sensitive, SPDT RF TO-5 relay
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,
6ms half sine
Enclosure Hermetically sealed
Weight RF311 0.089 oz. (2.52g) max.
RF331 0.109 oz. (3.09g) max.
UNI-FRAME
ARMATURE
UPPER
STATIONARY
CONTACT
LOWER
STATIONARY
CONTACT
MOVING
CONTACT
RF311/RF331 Page 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2007 TELEDYNE RELAYS
RF311RF331\022007\Q1
Contact Arrangement 1 Form C (SPDT)
Rated Duty Continuous
Contact Resistance 0.15 7 max. initial (measured 1/8q (3.2mm) from header)
Contact Load Ratings (DC) Resistive: 1A @ 28V dc
Low level: 10 to 50 µA @ 10 to 50 mV
Contact Life Ratings 10,000,000 cycles (typical) at low level
Coil Operating Power RF311: 350 mW typical @ nominal rated voltage
RF331: 185 mW typical @ nominal rated voltage
Operate Time RF311: 4.0 mS max.
RF331: 6.0 mS max.
Release Time RF311: 3.0 mS max.
RF331: 3.0 mS max.
Intercontact Capacitance 0.4 pf typical
Insulation Resistance 1,000 M7 min. between mutually isolated terminals
Dielectric Strength Atmospheric pressure: 350 Vrms (60 Hz)
SERIES RF311 AND RF331
GENERAL ELECTRICAL SPECIFICATIONS (@25°C unless otherwise noted) (Notes 2 & 3)
DETAILED ELECTRICAL SPECIFICATIONS (@25°C)
BASE PART NUMBERS RF311-5/RF331-5 RF311-12/RF331-12 RF311-26/RF331-26
Coil Voltage (Vdc) Nom. 5.0 12.0 26.5
Coil Resistance (Ohms ± 20%) RF311 63 500 2000
RF331 125 1025 4000
Pick-up Voltage (Vdc max.) RF311 3.6 9.0 18.0
RF331 3.6 9.0 18.0
SCHEMATIC DIAGRAM
(TERMINAL VIEW)
OUTLINE DIMENSIONS
1
32
4
5
DIMENSIONS ARE
SHOWN IN INCHES
(MILLIMETERS)
CASE DETAIL
.370
(9.40)
DIA. MAX.
.335
(8.51)
DIA. MAX.
H
H DIMENSION
RF311: .275 (6.99)
RF331: .385 (9.78)
+.002 (.05)
.017 (.43) –.001 (.03)
DIA.
WIRE LEAD: .75 (19.05) MIN.
PIN: .187 (4.75) p.010 (.25)
GOLD-PLATED
(NOTE 4)
LEAD & PIN LOCATIONS
(Viewed from Terminals)
PIN NUMBERS
(For reference only)
.035 (.89)
p.010 (0.25)
45op3o
TYP.
.031 (.79)
p.003 (0.08)
.200 (5.08)
p.010 (.25) DIA.
5 LEADS
GENERAL NOTES
1. Relay contacts will exhibit no chatter in excess of 10 µsec or transfer in excess of 1 µsec.
2. “Typical” characteristics are based on available data and are best estimates. No on-
going verification tests are performed.
3. Unless otherwise specified, parameters are initial values.
4. Leads are 0.75q standard. To order 0.187q leads, add /S to the base part number.
Ex. RF311-5/S.
© 2007 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com RF311/RF331 Page 3
RF311RF331\022007\Q1
SERIES RF311 AND RF331
TYPICAL RF CHARACTERISTICS
-2.0
-1.8
-1.6
-1.4
-1.2
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0 12345 867
Frequency (GHz)
Insertion Loss
Insertion Loss (dB)
NC-IL
NO-IL
0
-5
-10
-20
-25
-30
-35
-40
-45
-50
012345 876
Frequency (GHz)
Isolation
Isolation (dB)
NC-Iso
NO-iso
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
012345 876
Frequency (GHz)
VSWR
VSWR
NC-SWR
NO-SWR
RF311/RF331 Page 4 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2007 TELEDYNE RELAYS
RF311RF331\022007\Q1
SERIES RF311 AND RF331
TYPICAL RF CHARACTERISTICS
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0 0.05 0.1 0.15 0.2 0.25 0.3
Repeatability (dB)
Normally Closed Insertion Loss Repeatability Through 8 GHz
% Total Number Recorded Test Cycles
SERIES RF311 AND RF331
TYPICAL TIME DOMAIN CHARACTERISTICS
Pulse Response Characteristic
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
-50 0 50 100 150 200 250 300 350
Time (ps)
Volts (V)
Reference
NC
NO
Propagation Delay Time:
- NC : 56 ps
- NO : 61 ps
Pulse Rise Time:
- NC : 48 ps
- NO : 47 ps
Input Pulse Rise Time: 37 ps
100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
0 0.05 0.1 0.15 0.2 0.25 0.3
Repeatability (dB)
Normally Open Insertion Loss Repeatability Through 8 GHz
% Total Number Recorded Test Cycles
© 2007 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com RF311/RF331 Page 5
RF311RF331\022007\Q1
SERIES RF311 AND RF331
SMITH CHARTS
RF NOTES
Relay part number[s]: RF311-5, lot 06377E0830 Number of samples: 2 (except Smith Charts is 1 sample only)
Frequency range: 0.15 GHz to 8.0 GHz [1] Number of test points: 201
Test signal level: –10 dBm Data includes effect of test fixture: No
Test apparatus: Vector Network Analyzer HP8722D Mounting: Relays through hole mounted to RF PCB. Relay
Test temperature: Room ambient in contact with, but not soldered to, Ground. [Note 1]
NOTES: [a] RF PCB: 0.0031q copper clad, reinforced PTFE, RT/duroid® 5880 with SMA connectors
(RT/duroid® is registered trademark of Rogers Corporation)
[b] During test, untested port is terminated with 50 7 terminator
[c] Data herein are typical values based on the samples tested. Not for use as specification requirements.
RF311 – NC Closed RF311 – NC Isolation
RF311 – NO Closed RF311 – NO Isolation
Start 0.15 GHz
Stop 8.0 GHz
S[1,1] S[2,1] S[1,2] S[2,2]
J1
J2
J5
–J1
–J2
–J5
–J0.5
–J0.2
0
J0.5
J0.2
0.2 0.5 2 5 d
J1
J2
J5
–J1
–J2
–J5
–J0.5
–J0.2
0
J0.5
J0.2
0.2 0.5 2 5 d
J1
J2
J5
–J1
–J2
–J5
–J0.5
–J0.2
0
J0.5
J0.2
0.2 0.5 2 5 d
J1
J2
J5
–J1
–J2
–J5
–J0.5
–J0.2
0
J0.5
J0.2
0.2 0.5 2 5 d
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
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.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