---
type: product
schema_version: 1
stock_number: "94301-2"
canonical_url: "https://www.artisantg.com/94301-2/Narda-SEM143D"
json_url: "https://www.artisantg.com/94301-2/Narda-SEM143D.json"
generated_at: "2026-11-07T12:32:13.454Z"
last_updated: "2026-09-30T05:40:42.033-05:00"
---

# L-3 / Narda / Miteq SEM143D DC-18 GHz Stocked 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: SEM143D
- Condition: Used and in Excellent Condition
- Price: $350.00 USD
- Availability: In stock, 1 available
- Warranty: 1-Year Warranty with 30-Day Return Guarantee
- ITAR restricted: No
- Shipping weight: 4 lb, estimated
- Shipping dimensions: 12X9X6 in, estimated

## Categories

- Test Equipment > Electrical Test > Switches (primary)

## Details

### Configuration

- Actuating Current mA @ 140VDC
- Frequency Minimum: 0 MHz
- Frequency Maximum: 18000 MHz
- Insertion Loss: 0.5 dB Max
- VSWR: 1.5 Max
- Isolation: 60

## Images

- <https://www.artisantg.com/itemimages/l_3_narda_miteq_sem143d_view1_201812392549.jpg>
- <https://www.artisantg.com/itemimages/l_3_narda_miteq_sem143d_view2_201812392549.jpg>
- <https://www.artisantg.com/itemimages/l_3_narda_miteq_sem143d_view3_201812392549.jpg>