Cables and Harnesses
CBCA189953
Black Box DB9 Male-to-RJ45 Female Modular Adapter
About this part
Black Box CBCA189953 is a gray modular serial adapter with a 9-pin D-sub male connector, an RJ45 female jack, and D-sub thumbscrews. Its internal signal assignment is not documented. Verify continuity before connection; do not assume Ethernet, Cisco console, straight-through RS-232, or null-modem wiring
Configurations vary. Verify the exact unit before choosing a replacement.
Key Facts
Specifications
| Part identifier | CBCA189953 |
| Brand | Black Box |
| Product type | Modular serial adapter |
| D-sub interface | 9-pin D-sub male |
| Modular interface | RJ45 female jack |
| D-sub fastening | Thumbscrews |
| Housing color | Gray |
| Internal pinout | Not documented for CBCA189953; verify against a manufacturer wiring drawing or by continuity testing |
Wiring and Compatibility
The external connectors do not define the adapter’s wiring or protocol. Black Box modular-adapter documentation describes user-specified pinning, while no CBCA189953 wiring drawing or pin table is available. Confirm every conductor before use; connector appearance alone does not establish Ethernet operation, DTE/DCE role, console-cable compatibility, straight-through wiring, or null-modem wiring.
Comparable Black Box Modular-Adapter Platform
FA755 and FA4509M-GY document the corresponding Black Box connector and housing class. They are family comparators, not exact aliases or confirmed replacements for CBCA189953.
| Field | Documented family characteristic | CBCA189953 applicability |
|---|---|---|
| Connector arrangement | RJ45 8-wire socket with DB9 male connector | Matches the observed external interfaces; does not establish internal wiring |
| Pinning | Crimped leads are inserted according to the required user specification | Exact CBCA189953 pin assignment remains undocumented |
| Housing | ABS, UL 94 V-0 | Family-level information only; do not assert as the exact configured-unit material |
| Insulation resistance | 10 MΩ minimum at 500 VDC | Family-level information only; do not assert as an exact CBCA189953 rating |
| Test voltage | 1000 VAC RMS for one minute | Family-level information only; do not assert as an exact CBCA189953 rating |
| Voltage rating | 330 VAC RMS at sea level | Family-level information only; do not assert as an exact CBCA189953 rating |
Documentation Downloads
Local PDF copiesPart Photos
4 imagesHistorical archive images for identification, labels, connectors, and condition reference, not current inventory.
Historical Listings & Prices
Historical listing data, not a current offerThe typical recorded price range is $128.00 to $128.00. Based on 1 archived listing record; not a current offer, appraisal, or confirmed sale price.
View archived listing titles
- BROOKS CONNECTOR CBCA189953