1. Part 0
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c stands for Made in China
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2. Part 1
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T: TTL, H: HTL, E: ECL, C: CMOS
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M: Memory, μ : microcomputer circuit, F: linear amplifier,
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W: stabilizer, B: nonlinear circuit, J: interface circuit, AD: A\/D converter,
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DA: D\/A converter, D: audio, TV circuit, SC: communication special circuit,
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SS: sensitive circuit, SW: clock circuit
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3. Part 2
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A serial number representing a device
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4. Part 3
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r:‐55~85℃，m:‐55~125℃
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5. Part 4
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F: multi-layer ceramic flat, B: plastic flat, H: black porcelain flat, D: multi-layer ceramic double in-line,
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J: black porcelain double in-line, P: plastic double in-line, S: plastic single in-line, K: metal diamond,
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T: metal round, C: ceramic chip carrier, E: plastic chip carrier, G: network pin grid display
What the numbers and letters on the chip usually mean will be explained in his technical documentation.
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Some of the same models are different, such as the transistor, different identifiers may represent different amounts of play