Product details

This reversed polarized SMA female bulkhead connector is designed for crimp attachment to 50 Ohm RG174, RG188 and RG316 coaxial cables utilizing a crimp tool with standard crimp size of .128" for the crimp ferrule. This connector comes complete with nut and lock washer for panel mounting. This reverse polarized interface addresses the FCC requirement for non-standard interfaces for wireless devices.

Name: BAC503
SKU: BAC503

China-sourced compatible alternative — fit confirmed by drawing/spec review.

Part number (MPN)

BAC503

Impedance

50 Ohm

Frequency

Interface

SMA

Need a custom version from drawing?

We coordinate supplier-qualified RF connector and cable assembly sourcing from drawings, samples, or BOM. Typical production lead time is 3–6 weeks after drawing/spec review; feasibility, MOQ, and fit are confirmed by RFQ.

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Lead time: 3–6 wks | MOQ: 200+ pcs

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• Share the reference MPN and source brand if it matters.
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• Attach the drawing or the key fit requirements.

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Specifications

BAC503

Specifications for BAC503
Interface	RG174
Interface	RG188
Interface	RG316
Interface	Coaxial Connectors
Interface	SMA
Impedance	50 Ohm
Frequency (max)	DC
Frequency (max)	6 GHz
Gender	Jack
Body Style	Straight
Polarity	Reverse Polarity
Mounting	Bulkhead

Show 3 more specs

Category	Coaxial Connectors
Application	Radio Pigtails; RF Applications; WLAN; Low Loss Coax Applications; Wi-Fi Applications
Product Features	Bulkhead design for panel mounting; Mates with reverse polarized interface commonly found in wireless systems; Designed for crimp attachment to RG174/188 or 316 style cable; Gold plated center contacts minimize signal loss; Machined components produce a durable connector

Description

Current reference data for BAC503: SMA · 50 Ohm · DC. Impedance is listed as 50 Ohm. If that parameter is critical, confirm it again in RFQ. Frequency is listed as DC. The real operating limit still depends on the assembly, mating pair, and application context. Mounting is listed as Bulkhead. If panel, bulkhead, or flange constraints matter, send the dimensions with the RFQ. Use this page to shortlist before RFQ, not as the final sign-off.

Use this page to shortlist before RFQ. MOQ 200+ custom production and supply path are confirmed after drawing/spec/BOM review; no spot stock is assumed.

Request Quote (RFQ)

B2B RFQ sourcing from China for compatible alternatives and supplier-coordinated custom production. MOQ 200+, typical lead time 3–6 weeks after drawing/spec/BOM review; no physical stock is promised.

Drawing / spec review MOQ / lead-time check RF connectors Adapters Cable assemblies

Why work with us?

Form-Fit-Function compatibility confirmed by drawing/spec review
Commercially competitive alternative for replacement and sourcing projects
MOQ 200+ and lead time confirmed by model, quantity, and supply path

Working hours: 10:00–20:00 (Beijing Time, UTC+8)

We typically reply within 1 business day (subject to workload and time zones).

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Related RF sourcing routes

If this MPN is only a reference point, continue with a replacement, equivalent, adapter, or drawing-based cable assembly review.

Brand replacement briefs SMA alternatives from China BNC connector equivalents N Type RF replacement Custom RF cable from drawing

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Engineer checklist (key parameters)

Interface SMA

Gender Jack

Impedance 50 Ohm

Frequency (max) DC

Mounting Bulkhead

If these parameters are critical, include them in the RFQ.

FAQ

What connector interface/type does BAC503 use?

According to our catalog data, BAC503 lists the interface/type as: SMA. To confirm mechanical fit, send an RFQ and we will validate against your drawing/spec.

What is the impedance of BAC503?

Our catalog lists the impedance for BAC503 as: 50 Ohm. If impedance is critical for your application, include the requirement in your RFQ and we will confirm.

What mounting style does BAC503 use?

Our catalog lists the mounting style for BAC503 as: Bulkhead. If you have panel/bulkhead/flange constraints, attach a drawing in the RFQ.

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MPN Search Supports exact, prefix, and partial matching. ⌄

Supports exact, prefix, and partial matching.

000-10400 000-1 00010400

Disclaimer

Manufacturer names, trademarks, symbols, and part numbers are used for identification and cross-reference only. Cstone Technology is a China-based export sourcing partner for compatible alternatives and is not affiliated with the original brands. Trademarks remain the property of their respective owners. Final suitability is confirmed by drawing/spec review during RFQ.