Product details

Attenuators - Interconnects SMA 75 20dB 18GHz ATTENUATOR

Name: R411820121
SKU: R411820121

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

Part number (MPN)

R411820121

Impedance

50 Ohms

Frequency

18 GHz

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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• Attach the drawing or the key fit requirements.

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Specifications

R411820121

Specifications for R411820121
Interface	SMA
Interface	Connectorized Attenuators
Impedance	50 Ohms
Frequency (max)	-
Frequency (max)	18 GHz
Product Category	Attenuators - Interconnects
Maximum Attenuation	20 dB
Subcategory	Attenuators
Length	19.75 mm
Minimum Operating Temperature	- 55 C
Power Rating	2 W
Maximum Operating Temperature	+ 125 C

Show 2 more specs

Unit Weight	0.238135 oz
RoHS	Y

Description

Current reference data for R411820121: SMA · 50 Ohms · 18 GHz. Impedance is listed as 50 Ohms. If that parameter is critical, confirm it again in RFQ. Frequency is listed as 18 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)

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).

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.

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

Impedance 50 Ohms

Frequency (max) 18 GHz

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

FAQ

What connector interface/type does R411820121 use?

According to our catalog data, R411820121 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 R411820121?

Our catalog lists the impedance for R411820121 as: 50 Ohms. If impedance is critical for your application, include the requirement in your RFQ and we will confirm.

What frequency is R411820121 rated for?

Our catalog lists the frequency for R411820121 as: 18 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 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.