Sourcing Note

The 3S400 is a legacy Spartan-3 device — 400,000 system gates, 8,064 logic cells and 141 I/O in a 28 x 28 mm PQFP that repair and lifetime-buy programmes still ask for by exact part number. DigiKey lists this exact variant as Obsolete, so supply is remaining market stock only and date code and provenance are the whole conversation. This is the -4 speed grade in the industrial -40°C to +100°C range in the lead-free PQG208 package; do not let a listing blur it into the commercial C grade. Send your quantity and date-code requirement and we check current availability for this exact variant. Related parts: XC3S200-4PQG208C and XC3S500E-4PQG208C.

Why Source From ICCPOWER

Independent distributor in Huaqiangbei, Shenzhen. Date-code and label photos before payment, traceability documents with every lot, third-party testing supported on request.

FAQ

The part is obsolete — what should I check before buying?

Date code and provenance first. On obsolete Spartan-3 stock, ask for date-code and label photos of the actual lot and traceability documents before payment, and third-party testing if your volume justifies it.

A lot is marked XC3S400-4PQ208I without the G — is it the same part?

No. The G in PQG208 marks the lead-free (RoHS) package; PQ208 without the G is the leaded version. The silicon is the same, but if your production line or compliance file requires the lead-free variant, the two are not interchangeable — verify the full marking on the lot before payment.

How can I verify the condition of a lot before paying?

Ask for date-code and label photos of the actual lot, traceability documents, and third-party testing if your volume justifies it. We provide the first two before payment and support the third on request.