Collection/unidentified Soviet manufacturer/140UD9

ZeptoBars ·CC BY 3.0· Die photograph · Original retained in the acquisition archive. Display resized to at most 1920 pixels; responsive AVIF/WebP encodings. No crop, recoloring, annotations, or generated detail.

Origin & contributions

Original source · Retrieved 2026-09-06

ZeptoBars (publishing archive and CC BY licensor; individual photographer uncredited) · archive · Included in this image

Credit the photograph title and ZeptoBars; link to the original source page and CC BY 3.0; indicate modifications. No endorsement is implied.

SPECIMEN / DATE NOT RECORDED

140UD9

A Soviet 140UD9 general-purpose operational-amplifier die; the article says it is similar to CA3047 with output-stage differences.

unidentified Soviet manufacturerOperational amplifier

Research connections

Companyunidentified Soviet manufacturer ↗SeriesOperational amplifier ↗

Specifications

2 SOURCE-LINKED FIELDS

Photographed specimen	Published analysisZeptoBars Scope: physical-specimen
Photographic scope	Published analysisZeptoBars Scope: physical-specimen

THE VISUAL EVIDENCE

Visual sources

1 DOCUMENTED SOURCES

Hosted image provenance · 1

Die photographHosted in Museum

140UD9 — Die photograph

Zeptobars · ZeptoBars

3,184 × 3,184 pxTechnical archive / analysis

Article identifies 140UD9 as a general-purpose Soviet opamp and notes CA3047 similarity.

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Rights, provenance & link history

Rights status: CC LICENSED
Licence: CC BY 3.0 ↗
Local hosting / thumbnails / hotlinking: Allowed / Allowed / Not enabled
Attribution: 140UD9 — ZeptoBars / CC BY 3.0
Identity / confidence: matched / high
Evidence reviewed: 2026-09-06
Link checked: Not yet checked · unchecked

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Record identity & scope

specimen · 140UD9

What this photograph shows

Article identifies 140UD9 as a general-purpose Soviet opamp and notes CA3047 similarity.