--- type: product schema_version: 1 stock_number: "49331-1" canonical_url: "https://www.artisantg.com/49331-1/Narda-085-B137-A3C-4B2" json_url: "https://www.artisantg.com/49331-1/Narda-085-B137-A3C-4B2.json" generated_at: "2026-11-07T17:09:53.081Z" last_updated: "2026-10-14T13:00:51.160-05:00" --- # L-3 / Narda / Miteq 085-B137-A3C-4B2 Standard Custom Electro-Mechanical Switch _Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._ ## Summary - Manufacturer: Narda - Model: 085-B137-A3C-4B2 - Condition: Used and in Excellent Condition - Price: $595.00 USD - Availability: In stock, 25 available - Warranty: 1-Year Warranty with 30-Day Return Guarantee - ITAR restricted: No - Shipping weight: 1 lb, estimated - Shipping dimensions: 8X8X3 in, estimated ## Categories - Test Equipment > Electrical Test > Switches (primary) ## Details ### Configuration - Switch Series: SP8T - Actuation: Latching - Option 1: 50 Ohm Terminations - Option 3: Suppression Diodes - Option 7: Self De-Energizing Circuitry - RF Connectors: SMA - Terminals: Power Connector/Fast Disconnect (Sub Min. "D") - Voltage: 24 Vdc - Frequency: DC - 18 GHz - Polarity: Common Minus - Flange ## Function The L-3 / Narda / Miteq 085-B137-A3C-4B2 is a **Standard Custom Electro-Mechanical Switch** with the following key configuration features: - **Switch Series:** SP8T (Single Pole, Eight Throw) - **Actuation:** Latching - **Option 1:** 50 Ohm terminations on unused ports - **Option 3:** Suppression diodes included - **Option 7:** Self de-energizing circuitry (allowing the switch to maintain position without continuous power) - **RF Connectors:** SMA connectors - **Terminals:** Power connector/fast disconnect terminals, Sub Miniature D style ("Sub Min. D") - **Operating voltage:** 24 V DC - **Frequency range:** DC to 18 GHz - **Polarity:** Common minus - **Mounting:** Flanged package This configuration is a typical multiposition RF electro-mechanical switch designed for applications up to 18 GHz with careful inclusion of protection and performance features such as suppression diodes and 50-ohm terminations to minimize signal reflections on unused ports. The latching actuation combined with self de-energizing circuitry enables the switch to hold contact position without continuous coil power, improving efficiency and reducing heat. Additional details about the SP8T series switches from Narda-MITEQ confirm they are bi-directional, have interchangeable input/output ports, are available with various terminations and options including suppression diodes and self de-energizing circuitry, and come with SMA RF connectors and Sub Miniature D power connectors. This custom switch fits specialized RF systems requiring robust switching up to microwave frequencies, where high reliability and flexibility in control and termination are crucial. If you need specific datasheets or pinouts, Narda-MITEQ provides PDFs and product support directly via their website and contact info. ## Images - - - -