known-good die

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known-good die

[‚nōn ¦gu̇d ′dī]
(electronics)
An unpackaged, fully tested integrated circuit chip.

known-good die

Chips that have been fully tested before being placed into their packages. Chips used in ceramic-based multichip modules (MCMs) are typically fully tested beforehand, because the ceramic substrates are costly to replace if the final package is faulty because of a bad chip. See MCM and known-good software.
References in periodicals archive ?
The KGD was also safe and effective in a study of 10 adults with refractory status epilepticus, Dr.
Producing KGDs at the wafer level is only part of the problem.
TI's high-reliability packaging capabilities include ceramic, plastic and Known Good Die (KGD) wafer solutions.
KGD definition and standards are presented and the principles of burn in for flip chip ICs are explained.
The latest designs, Series KGD, are referred to as "wafer-type" valves because they are lighter and thinner than their predecessors, although they can handle higher pressures.
Rho t = fo + fdvdt + fgvgt + Eta t, (16) where Rho t = Delta ft - K Pi dvdt - K Pi gvgt - K Pi Pi v Pi t - K Pi zvzt, (17) (fd,fg) = (Beta d,Beta g) [ Kdd Kdg ] , (18) [ Kgd Kgg ]
This is a key requirement for semiconductor vendors to be able to supply KGD for cost-effective module assembly.
The T5385 also delivers Known Good Die (KGD) for consumer devices, to greatly improve yields for tomorrow's Low Power DDR2 (LPDDR2) and DDR3 multi-die and stacked devices.
For packages containing stacked logic and memory, the need for known good die (KGD) memory is essential.
Spansion, a provider of Flash memory solutions, announced on Monday (22 May) that Analog Devices Inc (NYSE:ADI), a semiconductor company, is combining Spansion Known Good Die (KGD) Flash memory with its Blackfin processor in a multi-chip module (MCM) for products supporting the automotive market.
Known good die (KGD) solutions are imperative if flip chip assemblies are to be reliably fabricated with high yields and at reasonable cost.