Product details

INSTRUMENTATION GRADE - Phase and amplitude stable microwave test assemblies

Name: 85123657
SKU: 85123657

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

Part number (MPN)

85123657

Impedance

50 Ω

Frequency

40 GHz

Interface

SF_11_SK-501

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.
• Add the BOM and volume split for production projects.
• Attach the drawing or the key fit requirements.

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Specifications

85123657

Specifications for 85123657
Interface	SUCOFLEX_550_S
Interface	SF_11_SK-501
Interface	SF_21_SK-501
Interface	REF to REF
Interface	SK, straight - plug
Interface	SK, straight - jack
Impedance	50 Ω
Frequency (max)	40 GHz
Frequency (max)	26.5 GHz
Length	36 inch
Min. return loss	14.9 dB
VSWR max	1.439

Show 13 more specs

Max. insertion loss	3.61 dB
Signal delay	4.3 ns/m
Propagation velocity	77 %
Min. screening effectiveness	90 dB
Amplitude stability vs. flexure	+/- 0.05 dB
Phase stability vs. flexure	+/- 6 °
Weight	0.1 kg
Cable type	6.1 mm
Static bending radius	25.4 mm
Operation temperature	-55 °C ... 125 °C
Directive	RoHS 2011/65/EU and (EU) 2015/863
Rating	Compliant with exemption
Exemptions	6c

Description

Current reference data for 85123657: SF_11_SK-501 · 50 Ω · 40 GHz. Impedance is listed as 50 Ω. If that parameter is critical, confirm it again in RFQ. Frequency is listed as 40 GHz. The real operating limit still depends on the assembly, mating pair, and application context. For higher-frequency projects, include the drawing, cable path, and critical requirements in the first RFQ. If mounting is missing here, confirm it from the drawing or mating requirement. 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)

Cstone is a professional factory—not a trading company—specializing in RF and coaxial connectors, adapters, and cable assemblies, including N-type, BNC, SMA, SMP, SSMB, MMCX, and more. We manufacture custom connectors to 2D drawings or samples; fit, MOQ, lead time, and production details are confirmed by RFQ. Factory-made production to 2D drawings or samples; MOQ 200+ and typical 3–6 week lead time are confirmed after drawing/spec/BOM review. Physical inventory is not promised; production details are confirmed by RFQ.

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).

Need a brand replacement workflow? Open the general brief → Need an approved alternative or cost-down workflow? Open the procurement brief →

Related RF sourcing routes

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

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Engineer checklist (key parameters)

Interface SUCOFLEX_550_S

Impedance 50 Ω

Frequency (max) 40 GHz

Cable type SUCOFLEX_550_S

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

FAQ

What connector interface/type does 85123657 use?

According to our catalog data, 85123657 lists the interface/type as: SF_11_SK-501. To confirm mechanical fit, send an RFQ and we will validate against your drawing/spec.

What is the impedance of 85123657?

Our catalog lists the impedance for 85123657 as: 50 Ω. If impedance is critical for your application, include the requirement in your RFQ and we will confirm.

What frequency is 85123657 rated for?

Our catalog lists the frequency for 85123657 as: 40 GHz. Actual performance depends on assembly/materials/application — send an RFQ so we can confirm a suitable option.

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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 operates its own factory for RF/coaxial connectors, adapters, and cable assemblies and is not a trading company or affiliated with the original brands. Trademarks remain the property of their respective owners. Final suitability is confirmed by drawing/spec review during RFQ.