UNIDENTIFIED SOVIET MANUFACTURER / SPECIMEN

140UD9

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

140UD9 DIE PHOTOGRAPH

1920 × 1920 PX SOURCE / 100%

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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.

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

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Specifications

2 SOURCE-LINKED FIELDS

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

Source-linked record

ARCHITECTURE → RTL → GDS

Design with this record

All design guides ↗

Start with documented specifications, then use the study prompts below. The prompts are engineering guidance, not a claim about this product’s private RTL or physical implementation.

Workload and traffic model

Turn core counts and clock targets into a workload model with dependencies, cache misses and sharing. Core count alone does not establish instructions per cycle or application throughput.

Contracts before RTL

Choose a representative producer/consumer path and specify acceptance, ordering, backpressure, outstanding capacity and reset recovery. Turn these contracts into assertions and test scenarios before optimizing the datapath.

A feasible physical plan

Obtain macro abstracts, pin maps, timing libraries and activity-based power estimates. Explore macro proximity, routing channels and power-grid reachability together. An annotated die photograph can suggest study questions, but cannot supply a netlist, PDK or signoff constraints.

Read the record in its physical scope.

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

This record has identification and source evidence. A deeper architectural article has not yet been written. Visible patterns alone do not establish block functions, capacity or an internal protocol.

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.

Link not yet checked

View original die photo

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

Reuse evidence ↗

Access to a source does not grant permission to reproduce its images.

Source trail

140UD9 — original ZeptoBars photography ↗ · ZeptoBars