BNC Connectors

Specifications for BNC Connectors

BNC style connectors are miniature, light-weight, weatherproof interconnecting devices characterized by their two-stud, quick disconnect bayonet lock coupling arrangement. Their design functions satisfactorily from DC to 11 GHz in static applications, or from DC to 4GHz in applications involving vibration. The connectors typically yield a low VSWR (reflected signal) to 4GHz. Primary applications include radio telecommunications, broadcast equipment, medical equipment, computer, Precision Video, High definition studio broadcast, video switching and test instrumentation where frequent coupling and de-coupling are necessary. Bomar’s BNCs are available in an extensive variety of configurations and cable sizes and are impedance matched to either 50 ohm or 75 ohm.

MATERIALS

Connector Parts	Material	Equivalent Standard
Connector Body and Parts	Brass	ISOCuZn38Pb2 Body Part
Male Contact Pin	Brass	QQ-B-626
Commercial Grade	Zinc Alloy/Brass	--------------
Outer Contact	Brass	QQ-B-750
Socket Contact	Beryllium Copper	QQ-C-530 / MIL-H-7199
----------	Phosphor Copper	CuBe2
Crimp Ferrule	Annealed Copper	QQ-C-576
Insulators, Standard Versions	Teflon	L-P403 / BS4271
----------	Delrin	Grade B
Rubber Gaskets	Silicone Rubber	ASTM-E1418PSI
Plating	Nickel (Silver Optional)	MIL-G-45204

ELECTRICAL

Requirement	Performance		Test † Specification
Impedance	50W **	75W **	** See V-Bite for 3GHz 75 ohm
Frequency Range	0-4GHz	0-1 GHz	------------
VSWR	1.30 Max.		MIL-C-39012
RF Insertion Loss	0.2 db Min. at 3 GHz		MIL-C-39012
RF Leakage	-55 db Min. at 3 GHz		MIL-C-39012
Test Voltage ( At Sea Level)	1500V rms		MIL-STD-202
Working Voltage ( At Sea Level )	500V rms		MIL-STD-202
Insulation Resistance	5000 Meg ohms Min.		MIL-STD-202
Contact Resistance	3 Milli ohms Max.		MIL-C-39012

Mechanical & Environmental

Requirement	Performance	Test † Specification
Durability	500 Insertions & Extractions Min.	MIL-C-39012
Shock	50 G	MIL-STD-202
Vibration	20 G from 80-2000 Hz	MIL-STD-202
Cable Retention (Cable Types)	60 lbs. Minimum Pull Test	MIL-C-39012
Coupling Nut	60 lbs. Maximum	MIL-C-39012
Temperature Range	Teflon: -55 to +199 C	------------
Temperature Range	Delrin: -40 to +85 C	------------
Moisture Resistance	Continuous Test	MIL-STD-202
Salt Spray	48 Hours	MIL-STD-202

†Products are made to conform to the Mil standard but are for commercial applications and are not QPL

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3 Piece Crimp

BNC three piece crimp connectors feature semi-captive contacts that “click” into place assuring perfect installation. Each crimp pin has a vent hole for optional soldering. Soldering is recommended for all stranded conductors 26 AWG or smaller.

Part Number (Male)	(I.D.) **	Fig. No.	RG/U Cable
310A205A	.200 In.	Fig. 1	6, 21 AWG Center Conductor
310A205A18	.200 In.	Fig. 1	6 CATV, 18 AWG Center Conductor
310A205F	.124 In.	Fig. 1	58A/U, 58C/U Stranded, 141, Thin PVC
310A205FS	.124 In.	Fig. 1	58/U Solid Conductor
310A205FV	.125 In.	Fig. 2	58/U Thin-Net Plenum
310A205FV2	.125 In.	Fig. 2	Mini 59, RGB Cable (23 AWG)
310A205FV3	.125 In.	Fig. 2	Mini 59, RGB Cable (26 AWG)
310A204G	.150 In.	Fig. 1	59, 62, 210
310A205G20	.150 In.	Fig. 1	RG59 20 AWG Center Cond.
310A205G23	.150 In.	Fig. 1	Belden 8241
310A205MV	.125 In.	Fig. 3	174, 178, 196, Mini RGB Cable 50 W
310B205MV	.125 In.	Fig. 3	174, 178, 196, Mini RGB Cable 75 W
310A205N	.090 In.	Fig. 3	179, 187
310A205P	.125 In.	Fig. 1	223
310B205Q	.205 In.	Fig. 1	Belden 8281 True 75 Ohms
310A204T	.150 In.	Fig. 2	59, 62, Plenum
310A208W2	.103 In.	Fig.1	Mini 59, RGB Cable (26 AWG)
RoHS compliant ** crimp shank


Fig.1	Fig.2

crimp BNC RG174

Fig.3


Fig.4	Fig.5

Twist-On and 2 Piece Crimp

BNC Twist-On connectors are field installable and require no tooling other than a stripping tool for the cable preparation. The center conductor is inserted into Bomar’s unique Posi-Con ™contact, as the connector is twisted onto the cable’s outer jacket.
BNC 2 Piece crimp connectors make use of a fully captivated pin. Just insert the center conductor into the connector body, slide the ferrule over the braid, and apply a single hex-crimp to the ferrule. These connectors are easy to install and reliable and are recommended only for the lower data transmission speeds.

Part Number	Gender	Fig. No.	RG/U Cable
310A405A	Male	Fig. 8	6, Thick net
310A405F	Male	Fig. 8	58A/U Solid Cond, 141, Thin PVC
310A405F1	Male	Fig. 8	58/U Solid Cond. -.172"- .178 “
310A405F2	Male	Fig. 8	58/U Thin Plenum - .158" - .162"
310A405F3	Male	Fig. 8	Thin Plenum .150"
310A405G	Male	Fig. 8	59, 62, 210 PVC
310A405T	Male	Fig. 8	59, 62, 210 Plenum
320A405F	Female	Fig. 8A	58 Solid (PVC)
320A405G	Female	Fig. 8A	59, 62, 210 (PVC)
310X205F	Male	Fig. 6	RG58 (PVC)
310X205G	Male	Fig. 6	RG59, 62 (PVC)
320X205F	Female	Fig. 7	RG58 (PVC)
320X205G	Female	Fig. 7	RG59, 62 (PVC)
RoHS compliant


Fig.8A		Fig.8

Fig.6		Fig.7

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BNC Connectors

Standard Clamp

BNC standard clamp style is a simplified version of the original military clamp style. It is required that the contact be soldered to the center conductor of the cable.

Part Number	Gender	Fig. No.	RG/U Cable
310A105A	Male	9	6
310A105D	Male	9	11A
310A105F	Male	9	58, 58A, 58C, 141
310A105G	Male	9	59, 62, 210
310A105M	Male	9	174, 188, 316
320A105F*	Female	10	58, 58A, 58C, 141
320A105G*	Female	10	59, 62, 214


Figure 9



Figure 10

RoHS compliant

Specialty Broadcast Plugs Click here for complete Broadcast Catalog

Broadcast grade BNC connectors are perfectly matched to 75 ohm impedance’s. The superior plugs are for studio wiring and other broadcast uses. Solid precision machined brass, not die-cast, hold up under the toughest conditions. Here, we are showing the eight most popular but there are many more versions matched to the popular cable manufacturer’s part number.

Part Number	Gender	Belden Cable
SBC1505A	Male	1505A
SBC1694A	Male	1694A
SBC1695A	Male	1695A
SBC1855A	Male	1855A
SBC7731A	Male	7731A
SBC8218	Male	8218
SBC8241	Male	8241
SBC8281	Male	8281

RoHS compliant

Bulkhead Jacks

Versions are available for front mounting, (F/M) rear mounting, (R/M) crimp types, bulkhead mount grounded, or bulkhead mount, isolated. (Color-coded available.) These jacks are held into the panel by a hex-nut and lock washer. All units feature nickel plated, brass bodies, and gold phosphor-bronze contacts



Figure 13	Figure 14

Figure 15	Figure 16

Fig. 17	Fig. 18 s

Part Number	Description	Fig No.	Hole ID
321A245A	R/M Crimp, RG6	13	.500
321A245F	R/M Crimp, RG58 , Thin-net PVC	13	.500
321A245FV	R/M Crimp, Thin-Net Plenum	14	.500
321A245G	R/M Crimp, RG59, 62, 210	13	.500
321A245M	R/M Crimp, RG174, 188, 196, 316	14	.500
321B245M*	R/M Crimp, RG174, 188, 196, 316	14	.500
321B245N*	R/M Crimp, RG179, 187	15	.500
326A515	F/M Solder (Grounded)	16	.375
326R515	F/M Solder (Isolated) White Bushing	17	.375
326R515RD	F/M Solder (Isolated) Red Bushing	17	.375
326R515GN	F/M Solder (Isolated) Green Bushing	17	.375
326R515BL	F/M Solder (Isolated) Blue Bushing	17	.375

RoHS compliant

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Panel Jacks and Plugs

BNC panel plugs and jacks are of machined brass construction for maximum reliability and quality. All contacts are plated with a minimum of five micro-inches of gold. The square panel types mount on .500 inch centers. The bulkhead type mounts into a .380 “D” shaped panel hole. All connector bodies are bright-nickel plated.

Part Number	Description	Notations	Fig. No.
316A524C	Male Bulkhead Panel Mount	.380" Mtg. Hole	19
317A507	Male Panel Mount	. 500 Mtg. Hole Centers	20
321A205F	Female Panel Mount, Crimp	Fits RG58/U Cables	21
321A205G	Female Panel Mount, Crimp	Fits RG59, 62 , 210 Cables	21
321A205M	Female Panel Mount, Crimp	Fits RG174, 178, 196	21
327A507	Female Panel Mount, Solder	.500 Mtg. Hole Centers	22
RoHS compliant


Figure 19	Figure 20

Figure 21	Figure 22

PC Board Vertical Jacks

BNC vertical mount jacks are available in straight PC mounts and “through-panel” styles. The “through-panel”, 364 Series, is made in both isolated and grounded versions and are ideal for applications where multiple insertions will require a connector which can endure the stress of higher torque.

Part Number	Body Plating or Material	Description	Insul. Mat.	Con. Plating	"L" Dim	Fig. No.
361A514*	Nickel / Brass	Straight PC Mount 50W	Teflon	Gold	.717	26
361A505*	Nickel / Brass	Straight PC Mount 50 W	Delrin	Gold	.914	27
361A534*	Nickel / Brass	3 Post PC Mount 50 W	Delrin	Gold	.788	27A
361A505APF	Nickel/Zinc	4 Post W/ Press Fit Center Pin 50W	Delrin	Gold	.925	27B
361A705APF	Nickel/Zinc	4 Post W/ Press Fit Center Pin 75W	Delrin	Gold	.925	27B
364S595	White Valox	PC Mount, Thru-Panel, 50 W	Delrin	Gold	1.36	23
364S595B	Black Valox	PC Mount, Thru-Panel, 50 W	Delrin	Gold	1.36	24
364S595M	Nickel/Zinc	PC Mount, Thru-Panel, 50 W	Delrin	Gold	1.36	25
364S795*	White Valox	PC Mount, Thru-Panel, 75 W	Delrin	Gold	1.36	23
364S795B*	Black Valox	PC Mount, Thru-Panel, 75 W	Delrin	Gold	1.36	24
364S795M*	Nickel/Zinc	PC Mount, Thru-Panel, 75 W	Delrin	Gold	1.3	25
RoHS compliant reflow or wave solder RoHS compliant wave solder only

BNC vertical PCB metal

Fig. 23 Fig. 24 Fig. 25


Fig. 26	The press-fit center pin locks the connector into the PC board so it is held firmly for reflow or wave soldering.

Fig. 27B

Fig. 27A	* Denotes that items are not popular and may require a special minimum quantity requirement.

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BNC Connectors

PC Board Right Angle JacksX

These BNC jacks are manufactured to the highest standards to assure stability in maintaining impedance matching at 50 ohm and 75 ohm applications. The 50 ohm versions have been approved by most of the U.S. manufacturers of LAN cards, and the 75 ohm is in wide use in High Definition Video applications which require the use of a True 75 ohm connector. Contacts are phosphor bronze and will remain resilient even after hundreds of insertions.

(75W)

N/A

Part Number	Body Material	Description	Imp.	Height F.M.S.	Contact Plating	Fig. No.
364M095	Nickel/Zinc	4 Post Low Profile, Metal	50W	.453	Gold	38
364M0975	Nickel /Zinc	4 Post Low Profile, Metal	75W	.453	Gold	38
364A595	White Valox	Standard Profile W/ Posts	50W	.610	Gold	28
364A595T	White Valox	Standard Profile W/ Posts (TPX)	50W	.610	Gold	28
364A595NP*	White Valox	Standard Profile WO Posts	50W	.610	Gold	35
364A595NPT*	White Valox	Standard Profile WO Posts (TPX)	50W	.610	Gold	35
364A595B	Black Valox	Standard Profile W/ Posts	50W	.610	Gold	30
364A595BT	Black Valox	Standard Profile W/ Posts (TPX)	50W	.610	Gold	30
364A595BNP*	Black Valox	Standard Profile WO Posts	50W	.610	Gold	35
364A595BNPT*	Black Valox	Standard Profile WO Posts (TPX)	50W	.610	Gold	35
364A595BL	White Valox	Lo Profile W/ Posts	50W	.515	Gold	29
364A595BLT	White Valox	Lo Profile W/ Posts (TPX)	50W	.515	Gold	29
364A595BLNP*	White Valox	Lo-Profile W/O Posts	50W	.515	Gold	34
364A595BLB	Black Valox	Lo-Profile W/ Posts	50W	.515	Gold	31
364A595BLBT	Black Valox	Lo-Profile W/ Posts (TPX)	50W	.515	Gold	31
364A595BLBNP*	Black Valox	Lo-Profile W/O Posts	50W	.515	Gold	34
364M595	Nickel /Zinc	Standard Profile W/ Posts	50W	.620	Gold	32
364M595T	Nickel /Zinc	Standard Profile W/ Posts (TPX)	50W	.620	Gold	32
364M595M	Nickel /Zinc	Super Lo-Profile W/ Clips	50W	.340	Gold	35A
364M595MT	Nickel /Zinc	Super Lo-Profile W/ Clips (TPX)	50W	.340	Gold	35A
364M595L	Nickel / Zinc	Lo-Profile W/ Posts	50W	.529	Gold	33
364M595LT	Nickel / Zinc	Lo-Profile W/ Posts (TPX)	50W	.529	Gold	33
364A595NP	White Valox	Standard Profile WO Posts	50W	.610	Gold	35
364A595NPT	White Valox	Standard Profile WO Posts (TPX)	50W	.610	Gold	35
364A595BNP*	Black Valox	Standard Profile WO Posts	50W	.610	Gold	35
364A595BLNP*	White Valox	Lo-Profile W/O Posts	50W	.515	Gold	-
364A595BLBNP*	Black Valox	Lo-Profile W/O Posts	50W	.515	Gold	34
364A795	White Valox	Standard Profile W/ Posts (TPX)	75W	.610	Gold	28
364A795T	White Valox	Standard Profile W/ Posts	75W	.610	Gold	28
364A795B	Black Valox	Standard Profile W/ Posts	75W	.610	Gold	30
364A795BT	Black Valox	Standard Profile W/ Posts (TPX)	75W	.610	Gold	30
364A795BL	White Valox	Lo-Profile W/ Posts	75W	.515	Gold	29
364A795BLT	White Valox	Lo-Profile W/ Posts (TPX)	75W	.515	Gold	29
364A795BLB	Black Valox	Lo-Profile W/ Posts	75W	.515	Gold	31