1. What is First Pass Yield (FPY)?

First Pass Yield (FPY) is a quality metric that measures the percentage of products manufactured correctly without any rework or scrap the first time through the process. It's a key indicator of manufacturing efficiency and quality.

2. How Does the Calculator Work?

The calculator uses the FPY formula:

Where:

• \( FPY \) — First Pass Yield percentage
• \( Scrap\ Rate \) — Decimal value of scrap rate (0 to 1)

Explanation: The formula converts the scrap rate (percentage of defective units) into the percentage of good units produced on the first pass.

3. Importance of FPY Calculation

Details: FPY is crucial for identifying process inefficiencies, reducing waste, improving quality, and increasing profitability in manufacturing operations.

4. Using the Calculator

Tips: Enter the scrap rate as a decimal value between 0 and 1 (e.g., 0.05 for 5% scrap rate). The calculator will compute the corresponding First Pass Yield percentage.

5. Frequently Asked Questions (FAQ)

Q1: What is a good FPY value?
A: While it varies by industry, generally FPY above 95% is considered good, and above 98% is excellent.

Q2: How is scrap rate different from defect rate?
A: Scrap rate specifically measures units that cannot be reworked and must be discarded, while defect rate includes all non-conforming units.

Q3: Can FPY be greater than 100%?
A: No, FPY cannot exceed 100% as it represents the percentage of units passing quality checks on the first attempt.

Q4: Why track FPY instead of just scrap rate?
A: FPY provides a positive metric (what's going right) rather than just focusing on negatives, which can be more motivating for improvement.

Q5: How can I improve my FPY?
A: Common strategies include process standardization, operator training, preventive maintenance, and implementing mistake-proofing (poka-yoke) techniques.