UI21 series

1VA-UI21-7.3

1 VA · UI21 core · Standard (0) · 2 × 115 V primary · 7 part numbers

DiscontinuedDatasheet (PDF)Request a quote

This series has been withdrawn from the current catalog

The 1VA-UI21-7.3 datasheet is no longer part of low-profile 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 1VA-UI21-7.3 UI21 transformer — 1VA-UI21-7.3 as supplied — Standard (0). The winding printed on the label is one of the part numbers listed below.

Dimensioned drawing of the 1VA-UI21-7.3 transformer: outline, mounting height, and pin layout — Outline and pin layout — millimetres. Every part number on the 1VA-UI21-7.3 datasheet shares this footprint.

Series specifications

Core: UI21
Rated power: 1 VA
Primary: 2 × 115 V (2 windings)
Secondary: 6–24 V per winding · dual winding
Winding code: 7.3
Cover style: Standard (0)
Copper weight: 11 g
Total weight: 60 g
Pin configuration: 1-3 + 4-6 / 7-8 + 11-12
Certifications: EN 61558
Part numbers: 7 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Factory datasheet for the withdrawn 1VA-UI21-7.3 series, kept here for anyone maintaining a design that already uses one. PDF, opens in a new tab.

1VA-UI21-7.3.pdf

Download datasheet

Part numbers in this series

Core, rating, cover, and footprint are fixed by the datasheet above. These 7 part numbers differ only in the secondary winding.

Filter this table

7 rows

1VA-UI21-7.3 — part numbers

ASL600406	2 × 6 V	83.3	10.3 V	1-3 + 4-6 / 7-8 + 11-12
ASL600408	2 × 7.5 V	33.3	12.4 V	1-3 + 4-6 / 7-8 + 11-12
ASL600409	2 × 9 V	55.6	15.7 V	1-3 + 4-6 / 7-8 + 11-12
ASL600412	2 × 12 V	41.7	20.8 V	1-3 + 4-6 / 7-8 + 11-12
ASL600415	2 × 15 V	33.3	24.5 V	1-3 + 4-6 / 7-8 + 11-12
ASL600418	2 × 18 V	27.7	28.8 V	1-3 + 4-6 / 7-8 + 11-12
ASL600424	2 × 24 V	20.8	38.4 V	1-3 + 4-6 / 7-8 + 11-12

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.

Request a quote All low-profile transformers