Capacitor code reading: Many small capacitors use a three-digit marking. For a device labeled 102, what is its capacitance value expressed in pF?

Introduction:
Component codes compress values onto tiny packages. Understanding the capacitor three-digit code is essential for quick identification during prototyping and repair.

Given Data / Assumptions:

• Code format: XY Z, where XY are significant digits and Z is the multiplier in pF.
• Marking is 102.
• Units are interpreted in picofarads unless otherwise stated.

Concept / Approach:
Use the rule: capacitance (pF) = (first two digits) * 10^(third digit). Then, convert to nF or µF only if asked. Here we keep pF directly.

Step-by-Step Solution:
1) Significant digits: 10.2) Multiplier: 10^2 = 100.3) Capacitance: 10 * 100 = 1000 pF.4) Optional conversions: 1000 pF = 1 nF = 0.001 µF.

Verification / Alternative check:
Cross-check with standard EIA code tables for ceramic capacitors: 102 always maps to 1000 pF.

Why Other Options Are Wrong:
10,000 pF: corresponds to 103, not 102.1000 µF and 10,000 µF: unrealistic for small coded ceramics; these are electrolytic-scale values.

Common Pitfalls:
Misreading the third digit as a literal digit rather than a power-of-ten multiplier; forgetting default units are pF for this code system.

Final Answer:
1000 pF