Safe Operating Area Coffee T-Shirt – Human Caffeination SOA Engineering Humor

Start your morning like a real engineer—with a full Safe Operating Area analysis.
This T-shirt features the Human Caffeination SOA, a parody of a MOSFET Safe Operating Area curve that maps coffee intake to actual morning behavior.
From Cognitive V(th) limitation (not enough caffeine to think)…
to Brain reboot…
to Choose words wisely…
to Sarcastic region and Stay back!—
every label mirrors a real instability zone any engineer recognizes.
The design even includes a spec box for T(mouth_max) = 65°C and a hot-coffee derating curve based on typical tongue failure point.
It’s datasheet-accurate, painfully relatable, and guaranteed to get laughs from anyone who works with power electronics, semiconductors, or PCB design.
Perfect for lab days, office standups, morning debugging, or anyone whose threshold voltage depends on caffeine.
👕 Features
100% soft, breathable cotton (fiber content may vary by color)
Classic fit with a clean, comfortable feel
High-resolution print with crisp engineering graphics
Tear-away label
Durable ribbed collar
🧼 Care Instructions

Machine wash cold, inside-out
Tumble dry low or hang dry for longest print life
Do not iron directly on the design
Do not bleach


EU representative: HONSON VENTURES LIMITED, gpsr@honsonventures.com, 3, Gnaftis House flat 102, Limassol, Mesa Geitonia, 4003, CY
Product information: Gildan 5000, 2 year warranty in EU and Northern Ireland as per Directive 1999/44/EC
Warnings, Hazard: For adults, Made in Nicaragua
Care instructions: Machine wash: cold (max 30C or 90F), Non-chlorine: bleach as needed, Tumble dry: low heat, Do not iron, Do not dryclean