Which of the following component package types have the least parasitic effects at frequencies above the HF range?
The correct answer is D: Surface mount. Which of the following component package types have the least parasitic effects at frequencies above the HF range is surface mount. Surface-mount packages have shorter leads, reducing parasitics. For amateur radio operators, this is important for RF circuit design. Understanding this helps when selecting components.
Exam Tip
Least parasitic effects above HF = surface mount. Think 'S'urface 'M'ount = 'S'mall 'M'ount (short leads, less parasitics). Surface-mount packages have shorter leads, reducing parasitics. Not TO-220, not axial lead, not radial lead - just surface mount.
Memory Aid
"Least parasitic effects above HF = surface mount. Think 'S'urface 'M'ount = 'L'ess parasitics. Surface-mount packages have shorter leads, reducing parasitics. Important for RF circuit design."
Real-World Application
Component package types at frequencies above HF: Surface mount has the least parasitic effects. Surface-mount packages have very short leads, minimizing inductance and capacitance. This is the type - surface mount has least parasitics.
Key Concepts
Why Other Options Are Wrong
Option A (TO-220): Incorrect. TO-220 has more parasitic effects - surface mount has least. TO-220 isn't the answer.
Option B (Axial lead): Incorrect. Axial lead has more parasitic effects - surface mount has least. Axial lead isn't the answer.
Option C (Radial lead): Incorrect. Radial lead has more parasitic effects - surface mount has least. Radial lead isn't the answer.
题目解析
The correct answer is D: Surface mount. Which of the following component package types have the least parasitic effects at frequencies above the HF range is surface mount. Surface-mount packages have shorter leads, reducing parasitics. For amateur radio operators, this is important for RF circuit design. Understanding this helps when selecting components.
考试技巧
Least parasitic effects above HF = surface mount. Think 'S'urface 'M'ount = 'S'mall 'M'ount (short leads, less parasitics). Surface-mount packages have shorter leads, reducing parasitics. Not TO-220, not axial lead, not radial lead - just surface mount.
记忆口诀
Least parasitic effects above HF = surface mount. Think 'S'urface 'M'ount = 'L'ess parasitics. Surface-mount packages have shorter leads, reducing parasitics. Important for RF circuit design.
实际应用示例
Component package types at frequencies above HF: Surface mount has the least parasitic effects. Surface-mount packages have very short leads, minimizing inductance and capacitance. This is the type - surface mount has least parasitics.
错误选项分析
Option A (TO-220): Incorrect. TO-220 has more parasitic effects - surface mount has least. TO-220 isn't the answer. Option B (Axial lead): Incorrect. Axial lead has more parasitic effects - surface mount has least. Axial lead isn't the answer. Option C (Radial lead): Incorrect. Radial lead has more parasitic effects - surface mount has least. Radial lead isn't the answer.
知识点
Component package types, Least parasitic effects, Frequencies above HF range, Surface mount
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.