DELTA ADP-40DD B 12V 3.33A 40W 5.5mm power adapter
Delivers 12 V at 3.33 A (40 W) via a 5.5 mm barrel connector and includes a power cord
- Worldwide voltage support from 100-240 V input
- Reliable 40 W output for steady device operation
- Included power cord enables immediate connection
- 5 mm barrel connector fits compatible equipment
- Built-in safeguards protect against voltage and short-circuit faults
DELTA 40 W AC adapter
This DELTA ADP-40DD B adapter delivers 12 V at 3.33 A for a total of 40 W. It accepts a worldwide 100-240 V input at 50-60 Hz and includes a detachable mains cord. The fixed output cable ends in a 5.5 × 2.1 mm barrel plug for direct connection to compatible devices.
Suits devices needing 12 V 3.33 A.
The unit matches hardware that draws up to 3.33 A at 12 V. Equipment requiring more current, a different voltage or an alternative connector type will need a separate power source. Buyers should verify their device label before ordering.
5.5 × 2.1 mm barrel connector decides fit
The output tip measures 5.5 mm outer diameter by 2.1 mm inner diameter. Only devices with a matching jack will connect securely. Polarity and mechanical dimensions must agree with the target hardware for correct operation.
How it compares
Measured against everything we stock in AC Adapters & Power Bricks, at today’s prices. Recalculated every night.
- Price $18.99
- Cheaper than about 60% of the 3,875 comparable items (median $23.99).
New to this? Which coin should you pay with — what to check, what it costs to pay, and what is never asked for.
Specifications
| Product | |
|---|---|
| Model name | ADP-40DD B |
Questions about this item
Is the 12 V 3.33 A 40 W version the only option for this ADP-40DD B model?
Yes, this model is supplied solely as a 12 V 3.33 A 40 W unit with a 5.5 x 2.1 mm barrel connector.
Will the 40 W output reliably run a laptop that draws close to that limit?
The adapter delivers up to 40 W at 12 V, so it will power any device requiring 12 V at 3.33 A or less without exceeding its rating.
What does the 100-240 V 50-60 Hz input mean for everyday use?
It accepts mains voltages from 100 V to 240 V at 50 Hz or 60 Hz, allowing worldwide use with only a plug adapter.
More in AC Adapters & Power Bricks





