EI78 series

55VA-EI78-27.5-KK

55 VA · EI78 core · KK (cover + strain relief) · 230 V primary · 14 part numbers

DiscontinuedDatasheet (PDF)Request a quote

This series has been withdrawn from the current catalog

The 55VA-EI78-27.5-KK datasheet is no longer part of pcb mount transformers production and these part numbers cannot be ordered. The page and the drawing stay published for anyone maintaining a design that already uses one — open a part number below to see the active parts it can be requoted against.

Send the specification and we will quote the same wind as a custom build.

Photograph of an Aslan 55VA-EI78-27.5-KK EI78 transformer — 55VA-EI78-27.5-KK as supplied — KK (cover + strain relief). The winding printed on the label is one of the part numbers listed below.

Dimensioned drawing of the 55VA-EI78-27.5-KK transformer: outline, mounting height, and pin layout — Outline and pin layout — millimetres, 42.5 mm pin spacing. Every part number on the 55VA-EI78-27.5-KK datasheet shares this footprint.

Series specifications

Core: EI78
Rated power: 55 VA
Primary: 230 V (single winding)
Secondary: 6–24 V per winding · single or dual
Pin spacing: 42.5 mm
Winding code: 27.5
Cover style: KK (cover + strain relief)
Copper weight: 250 g
Total weight: 1,280 g
Pin configuration: 2-8 / 12-16 · 2-8 / 11-13 + 15-17
Certifications: EN 61558
Part numbers: 14 on this datasheet

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.

Datasheet

Archive copy

Factory datasheet for the withdrawn 55VA-EI78-27.5-KK series, kept here for anyone maintaining a design that already uses one.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

Download datasheet

Part numbers in this series

Core, rating, cover, and footprint are fixed by the datasheet above. These 14 part numbers differ only in the secondary winding.

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14 rows

55VA-EI78-27.5-KK — part numbers

ASL203106	6 V	9,170	6.65 V	2-8 / 12-16
ASL203108	7.5 V	7,330	8.3 V	2-8 / 12-16
ASL203109	9 V	6,110	10.2 V	2-8 / 12-16
ASL203112	12 V	4,580	13.7 V	2-8 / 12-16
ASL203115	15 V	3,670	17.05 V	2-8 / 12-16
ASL203118	18 V	3,060	20.5 V	2-8 / 12-16
ASL203124	24 V	2,290	27.1 V	2-8 / 12-16
ASL203206	2 × 6 V	4,580	6.7 V	2-8 / 11-13 + 15-17
ASL203208	2 × 7.5 V	3,670	8.3 V	2-8 / 11-13 + 15-17
ASL203209	2 × 9 V	3,060	10.2 V	2-8 / 11-13 + 15-17
ASL203212	2 × 12 V	2,290	13.6 V	2-8 / 11-13 + 15-17
ASL203215	2 × 15 V	1,830	17.1 V	2-8 / 11-13 + 15-17
ASL203218	2 × 18 V	1,530	20.6 V	2-8 / 11-13 + 15-17
ASL203224	2 × 24 V	1,140	27.2 V	2-8 / 11-13 + 15-17

Current is quoted per secondary winding, so a dual-winding part delivers the listed current on each of its two windings rather than splitting it between them. No-load voltage is the open-circuit secondary before the winding is loaded — expect it to sit above the rated figure.

Next step

Still using this series?

The wind still exists as a specification even though the part number has gone. Send it over and we will price the same transformer as a custom build.

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