PCB Mount Transformers
ASL203118
55 VA · EI78 · 230 V primary · 18 V secondary at 3.06 A
ASL203118 is discontinued and cannot be ordered
The 55VA-EI78-27.5-KK series has been withdrawn from Aslan Elektronik's current catalog. This page and its datasheet stay published for anyone maintaining a design that already uses this part.
These active parts carry the same 18 V secondary at or above 55 VA. They are a different core, so confirm the footprint against the datasheet before you substitute.
Specifications
- Part number
- ASL203118
- Availability
- Discontinued
- Rated power
- 55 VA
- Primary voltage
- 230 V
- Secondary voltage
- 18 V
- Secondary current
- 3.06 A
- No-load voltage
- 20.5 V
- Core
- EI78
- Cover style
- KK (cover + strain relief)
- Pin spacing
- 42.5 mm
- Pin configuration
- 2-8 / 12-16
- Mounting
- PCB through-hole
- Copper weight
- 250 g
- Total weight
- 1,280 g
- Certifications
- EN 61558
- Series
- 55VA-EI78-27.5-KK
Insulation and impregnation are specified as air, oven-dried varnish, polyurethane coating, or epoxy potting, selected to the unit's environmental exposure and required creepage and clearance.
How this part is supplied
Aslan Elektronik builds to order and ships direct from the factory. S&B Tech is its exclusive North American representative, not a stocking distributor, so pricing comes back with the quote at your volume. Lead time is two weeks.
A secondary voltage, cover style, or footprint outside this table is a custom wind, which is normal business here rather than an exception.
Both arrive with ASL203118 attached. We reply within 48 hours.
Datasheet
Archive copyFactory datasheet for the withdrawn 55VA-EI78-27.5-KK series, kept here for anyone maintaining a design that already uses one. PDF, opens in a new tab.
55VA-EI78-27.5-KK.pdf
Other secondaries on this datasheet
Same EI78 core, same 55 VA rating, same footprint — only the secondary winding changes.
- ASL2031066 V at 9.17 A
- ASL2031087.5 V at 7.33 A
- ASL2031099 V at 6.11 A
- ASL20311212 V at 4.58 A
- ASL20311515 V at 3.67 A
- ASL20312424 V at 2.29 A
- ASL2032062 × 6 V at 2 × 4.58 A
- ASL2032082 × 7.5 V at 2 × 3.67 A
- ASL2032092 × 9 V at 2 × 3.06 A
- ASL2032122 × 12 V at 2 × 2.29 A
- ASL2032152 × 15 V at 2 × 1.83 A
- ASL2032182 × 18 V at 2 × 1.53 A
- ASL2032242 × 24 V at 2 × 1.14 A
Next step
Replacing ASL203118
Each route below arrives with this part number and PCB Mount Transformers already attached.
Quote or custom wind
Pricing at your volume for this part, or the same transformer with a different secondary, cover, or footprint.
Request a quoteCross-reference
Replacing a Hammond, Triad, Signal, Tamura, Pulse, or Delevan part? Send the part number and we confirm the fit.
Cross-reference a partSamples
This part is discontinued, so samples start from the custom-wind route above.
Start a custom build