Engineering evidence for component choices

Find a possible substitute. See what needs checking.

Search a part number to compare candidate parts, available datasheet evidence, and known differences. Then verify the exact part against your design.

Indexed parts: 59
Focused families: 5

Start with the exact part number

Search the catalogue, or browse all indexed parts.

Try a popular part:STM32F405RGT6 LM358 ESP32-WROOM-32E AMS1117-3.3

Browse all indexed parts

A practical workflow

59 parts indexed; coverage is still growing

1. Find the part
Search by exact part number, manufacturer, or family. Check the package and ordering suffix, not just the family name.
2. Compare the evidence
Review candidate notes and manufacturer datasheets. Missing catalogue fields are unknown, not a match.
3. Validate before buying
Check current stock with a distributor. Have an engineer compare application limits and test the candidate in the target design.

Browse by component family

59 parts across 5 families

STM32 MCUs

13 parts

STM32 microcontrollers and common development targets.

STM32F103C8T6 STM32F405RGT6 STM32F411RET6

Browse stm32 mcus parts

ESP32 modules

6 parts

ESP32-family wireless modules.

ESP32-WROOM-32E ESP32-S3-WROOM-1 ESP32-C3-MINI-1

Browse esp32 modules parts

Operational amplifiers

12 parts

Common operational amplifier devices.

LM358 LM358B TLV9062

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Voltage regulators

15 parts

Linear and switching voltage regulators.

AMS1117-3.3 LM7805 TPS62160

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74xx logic

13 parts

Common 74xx and CMOS logic devices.

SN74HC595 SN74HC14 SN74HC245

Browse 74xx logic parts

Use both together

Supplier availability + engineering evidence

Distributors are the place to confirm current availability and price. Use manufacturer datasheets and application-specific engineering review to decide whether a candidate fits your design.

Question	Best next step	SubMatrix can help with
Current stock and price	Mouser / DigiKey	Search supplier
Package and pinout	Manufacturer datasheet	Candidate notes
Electrical operating limits	Manufacturer datasheet	Compare known fields
Application-specific fit	Your circuit requirements	Engineer review and test
Observed bench results	Not typically listed	When reported by community

Contribute

Help improve the evidence

Submit datasheet sources, a comparison, and unsuitable conditions. Moderator-reviewed candidates appear on part pages; community feedback adds context but does not certify a substitution.

01Document the proposed substitute and evidence.
02Moderators review compatibility and source quality.
03Accepted contributions earn reputation through community votes.