Fairchild Semiconductor STK621-043A-E
IC HALF BRIDGE DRIVER 20A 23SIP
Answer first: this page is a purchasing reference for the exact part number STK621-043A-E from Fairchild Semiconductor. Use it to start datasheet, package, manufacturer and RFQ verification; do not treat page text as a live stock, price or lead-time promise.
Key Parameters
| Part Number | STK621-043A-E |
|---|---|
| Manufacturer | Fairchild Semiconductor |
| Category | Full Half-Bridge (H Bridge) Drivers |
| package | 23-SIP, 19 Leads, Formed Leads |
| series | - |
| packaging | Tube |
| product status | Obsolete |
| param 1 | Half Bridge (3) |
| param 2 | AC Motors |
| param 3 | Logic |
| param 4 | Inductive |
| param 5 | IGBT |
| param 6 | - |
| param 7 | 20A |
| param 8 | 40A |
| param 9 | 12.5V ~ 17.5V |
| param 10 | 400V (Max) |
| param 11 | -20°C ~ 150°C (TJ) |
| param 12 | - |
| param 13 | - |
| param 14 | Auto Restart, Bootstrap Circuit, Status Flag |
| param 15 | Current Limiting, UVLO |
| param 16 | Through Hole |
| param 17 | 23-SIP |
Parameters are provided for purchasing review. Confirm package, suffix, lifecycle status, datasheet revision and approved substitutes before ordering.
How to Verify STK621-043A-E Before Ordering
Datasheet and parameter checks
- Confirm the full manufacturer part number, not only a shortened search keyword.
- Compare package, pinout, dimensions, voltage or rating fields, temperature range and compliance wording against the released BOM.
- Use the manufacturer datasheet or drawing for electrical and mechanical limits before approving a substitute.
RFQ fields SENICO needs
- Send exact part number, manufacturer, quantity, target delivery date, destination and required packaging.
- State whether alternates are allowed, and list any date-code, certificate, traceability or customer AVL requirement.
- Keep exact stock, factory lead time and proposed alternatives in separate quote lanes.
For STK621-043A-E, SENICO recommends checking manufacturer marking, package, date code, requested quantity, approved vendor requirements and replacement risk before issuing a purchase order. If a supplier suggests an equivalent, record the changed fields and approval owner before comparing price.
We do not treat displayed data as a real-time stock or price commitment. The RFQ reply is the verified commercial reference.
Related buying guides: stock and lead-time verification, equivalent IC comparison, and BOM RFQ preparation.