Diodes, solid-state (e.g., germanium, silicon), manufacturing · California

Alpha and Omega Semiconductor

Sunnyvale, CA · ~176 workers · 4 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
0.1
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Alpha and Omega Semiconductor runs at 4% of its industry's injury rate - far safer than the typical Diodes, solid-state (e.g., germanium, silicon), manufacturing workplace, earning a grade A.

Alpha and Omega Semiconductor: 0.1 TCR = 4% of Diodes, solid-state (e.g., germanium, silicon), manufacturing BLS 3.3 · 4y Form 300A (see methodology below)

Alpha and Omega Semiconductor safety composite

Alpha and Omega Semiconductor scores strongest on total case rate (tcr) (safer than 95% of same-industry peers) and weakest on fatalities (safer than 51%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

B

78/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
A 0.14 per 100 workers

Safer than 95% of industry peers

DART rate
B 0 per 100 workers

Safer than 77% of industry peers

Fatalities
D 0

Safer than 51% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

Alpha and Omega Semiconductor held a steady TCR band

Alpha and Omega Semiconductor's TCR held near 0.0 from 0.0 in 2019 to 0.0 in 2022. Peak filing year was 2021 at 0.5 TCR. In 2022, DART was 0× this establishment's average TCR (severity share of cases).

2019=0.0 · 2020=0.0 · 2021=0.5 · 2022=0.0

OSHA ITA Form 300A scorecard

Establishment book 334413 · Sunnyvale, CA AT/BELOW-IND · MID

Grade A · TCR 0.1 · 4% of ind

  • DART 0.0 DART
  • RANK #11/128
  • PHOTO Micron SIG
  • BOOK 4y book
  • INJ 1 inj
  • SIZE ~176 FTE

Nearest TCR peer: Micron SIG (0.0 TCR gap)

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Alpha and Omega Semiconductor in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Alpha and Omega Semiconductor averages 0.1 TCR (4% of the Diodes, solid-state (e.g., germanium, silicon), manufacturing BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Alpha and Omega Semiconductor TCR series: 2019=0 · 2020=0 · 2021=0.5 · 2022=0 · BLS 3.3

Where Alpha and Omega Semiconductor falls in its industry

437 Diodes, solid-state (e.g., ger establishments

Safer than 95% of graded establishments in this industry, whose median TCR is 0.9.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #11 safest of 128 Diodes, solid-state (e.g., ger employers in California.

Alpha and Omega Semiconductor (176 employees, TCR 0.1) among 29 same-industry peers, split at the industry median of 216 employees and a TCR of 0.9 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 01,0002,0003,0004,000 0246 Average employees Total Case Rate Alpha and Omega Semiconductor
Alpha and Omega Semiconductor (176 employees, TCR 0.1) among 29 same-industry peers, split at the industry median of 216 employees and a TCR of 0.9

Alpha and Omega Semiconductor has fewer employees than the Diodes, solid-state (e.g., germanium, si median and a lower injury rate than the industry's median TCR of 0.9. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year TCR DART Injuries Illnesses Fatalities
2022 0.0 0.0 0 0 0
2021 0.5 0.0 1 0 0
2020 0.0 0.0 0 0 0
2019 0.0 0.0 0 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

334413 · CA · Sunnyvale

437 Diodes, solid-state (e.g., germanium, silicon), manufacturing employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 218 employers in Sunnyvale, CA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Micron SIG 0.1 TCR
NAICS-TCR Applied Optoelectronics, Inc. 0.1 TCR
NAICS-TCR Microchip Technology Inc. Austin 0.1 TCR
NAICS-TCR Qorvo Texas LLC 0.1 TCR
STATE-SIZE Mt. View Ag 176 FTE
STATE-SIZE CA-South Bay S/C 176 FTE
STATE-SIZE LADWP 2311 FAIRFAX 176 FTE
STATE-SIZE Matt Construction Corporation 176 FTE
CITY-NEAR LinkedIn Mountain View / Sunnyvale 5,575 FTE
CITY-NEAR Lockheed Martin Corporation Sunnyvale Campus (1066) 4,224 FTE
CITY-NEAR Intuitive Surgical 3,888 FTE
CITY-NEAR Intuitive 3,670 FTE
NAT-TCR NOV Houston PCG ELD 0.1 TCR
NAT-TCR GPC Corporate Office - 241 Ralph McGill Boulevard NE Atlanta, GA 30308 0.1 TCR
NAT-TCR Medlock Gardens 0.1 TCR
NAT-TCR 511 Theo Fremd 0.1 TCR
NAT-SIZE Mid-Atlantic Reg Off (Columbia Md) 176 FTE
NAT-SIZE Wilbanks Trucking Services, LLC 176 FTE
NAT-SIZE HCA Wesley Rehabilitation Hospital 176 FTE
NAT-SIZE South Jordan 176 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2022, 2021, 2020, 2019. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.