Isolated power without a bulky module
The SN6505B family is a push-pull transformer driver that turns a small transformer into an isolated supply for CAN, RS-485, gate-drive and isolated-sensor rails. When the imported original is allocated, COSINE (科山芯创) offers functionally equivalent drivers that we keep in stock.
COSINE transformer-driver cross-reference
| COSINE part | Commonly replaces | Package | Notes |
|---|---|---|---|
| cos6505b | SN6505BDBVR | SOT23-6 | Verify pinout & switching limits before substituting |
| cosn6505c | SN6505-class driver | SOT23-6 | Transformer driver for isolated rails |
| cos6501 | SN6501DBVR | SOT23-6 | Lower-current isolated supply |
What to verify before substituting
COSINE parts are functional alternatives sourced from the manufacturer's own cross-reference data, not a claim of 100% pin-to-pin identity. Confirm the transformer turns ratio, switching frequency and current limit against your isolation design, then validate thermal performance on the bench.
Related isolated-supply options on this store include the power management category and the gate-driver line (COS2xxx / COS4xxx).
Frequently asked questions
Is COS6505B a drop-in replacement for SN6505BDBVR?
It is a functional alternative from the COSINE cross-reference table. Check the pin map, switching frequency and current limit, then re-validate the transformer and isolation barrier on your board.
Do you stock the matching transformers?
We can source push-pull transformers on request — send the isolation voltage and turns ratio you need.
What is the MOQ?
MOQ is 1 piece; production volumes are quoted per order.
Recommended next steps
If you are sourcing any of the parts mentioned in this guide, we can help you confirm stock, pricing, and lead times quickly.
- Upload your BOM — send your full parts list and receive a consolidated quote within 2 business hours.
- Browse related in-stock lines: Amplifiers / Data Conversion · Power Management ICs.
- Contact our team for hard-to-find or end-of-life components.
JTDZ Tech is an independent distributor of electronic components. Brand and part numbers are used for identification and cross-reference only; all trademarks belong to their respective owners. Always verify pinout, electrical limits and qualification status against the original device before substituting.
