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RFB8T SERIES
3G SDI optimized
True 75
Ω terminations
23 AWG 75
Ω
1855A Belden cable
RFB8T–78SP4–79SP3–0300
Single or Double
Ended
WWW.SAMTEC.COM
For complete specications
see www.samtec.com?RFB8T
RF Connector:
Outer Contact Material:
Ni plated Brass (BNC)
Au plated BeCu (DIN)
Center Contact Material:
Au plated Brass
Operating Temperature:
-65°C to +125°C
Impedance:
75
Ω ±2Ω (ST), 75Ω ±4Ω (RA)
Frequency Range:
0-3.5 GHz **
Working Voltage:
250 Vrms (DIN),
330 Vrms (BNC)
Dielectric Withstanding:
750 Vrms (DIN),
1000 Vrms (BNC)
Contact Resistance:
Center Contact: Testing Now!
Outer Contact: Testing Now!
RoHS Compliant:
Yes
1855A Cable:
Impedance:
75
Ω ±3Ω
Capacitance:
56 ±3pF/meter
Max Attenuation (cable only):
0.37dB @ 1GHz for 1 meter
Conductor Size:
23 AWG, (0,58mm) .023" dia.
Conductor Material:
Bare Copper
Insulator Material:
Gas Injected Foamed
Polyethylene
Shield Material: Tin Copper
Jacket Material: PVC
Jacket Diameter:
(4,03mm) .159"
Jacket Color: Black
RoHS Compliant: Yes
F-211
SPECIFICATIONS
Mates with:
MBNC7, DIN7A, HDBNC
CABLE
TYPE
END 1
CONNECTOR
OVERALL
LENGTH
–“XXXX”
= Overall Length in
millimeters
–0300 (300mm)
11.81" minimum
END 2
CONNECTOR
RFB8T
= Belden
1855A Cable
Specify
END OPTIONS
from chart
STRIPPED & TINNED
(Dimensions in mm)
Both center conductor and
braid shield are stripped,
only the center
conductor is tinned.
Call Samtec for other
sizes or tinning options.
CALLOUT
–303030
–303040
–403030
–403040
–404040
A
3.0
4.0
B
3.0
4.0
C
3.0
4.0
3.0
4.0
75
Ω 1855A CABLE ASSEMBLIES
ALSO AVAILABLE
Connector Kits.
Additional plating options available.
Call Samtec.
* Designed to meet SMPTE
424M 3G SDI specication.
END OPTIONS
–78SP4 =
75
Ω DIN, Straight Plug
(10" (0,25m) Gold
on Center Contact,
Gold Flash on
Outer Contact,
Nickel on Shell)
–SING =
Single Ended
(End 2 callout)
–XXXXXX =
Stripped & Tinned
(End 2 callout)
(See chart for callout)
A
B
C
END OPTIONS
–H4SP3 =
75
Ω High Density BNC,
Straight Plug
(10" (0,25m) Gold
on Center Contact,
Nickel on Shell)
–79RP3 =
75
Ω Mini BNC,
Right Angle Plug
(10" (0,25m) Gold
on Center Contact,
Nickel on Shell)
–79SP3 =
75
Ω Mini BNC,
Straight Plug
(10" (0,25m) Gold on
Center Contact,
Nickel on Outer
Contact and Shell)
XXXX = OAL (millimeters)
–78SP4–79SP3 SHOWN
** See connector component
pages for specic range.