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Fairchild Semiconductor KA4558S

IC OPAMP GP 2 CIRCUIT 9SIP

Answer first: this page is a purchasing reference for the exact part number KA4558S 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.

Manufacturer: Fairchild Semiconductor Part number: KA4558S Package: 10-SSIP Module, 9 Leads, Formed Leads RFQ verification required

Key Parameters

Part NumberKA4558S
ManufacturerFairchild Semiconductor
CategoryInstrumentation, Op Amps, Buffer Amps
package10-SSIP Module, 9 Leads, Formed Leads
series-
packagingBulk
product statusObsolete
param 1General Purpose
param 22
param 3-
param 41.2V/µs
param 5-
param 6-
param 730 nA
param 82 mV
param 93.5mA (x2 Channels)
param 10-
param 1144 V
param 1244 V
param 130°C ~ 70°C
param 14-
param 15-
param 16Through Hole
param 179-SIP

Parameters are provided for purchasing review. Confirm package, suffix, lifecycle status, datasheet revision and approved substitutes before ordering.

How to Verify KA4558S 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 KA4558S, 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.