NXP Semiconductors PCA2129T

PCA2129T variants from NXP Semiconductors

PCA2129T Datasheet

Variants

Mfr

NXP Semiconductors

Lifecycle

Active

PCA2129T Overview

What changes between part numbers, and what to check before you lock the BOM — Microcontrollers.

Key Features

Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
2 distinct suffix patternsExamples: Q900/2, Q900/2,51. Decode suffix meaning in the ordering notes under the variant table.

Target Applications

Microcontrollers — design-in and field replacement
BOM scrub where only the base prefix is known but suffix is TBD
Second-source checks when the original MPN is constrained

Ordering Variants

Compare 2 PCA2129T part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.

Part Number	Description	Manufacturer	Lifecycle	RoHS	Availability	Action
PCA2129T/Q900/2	AUTOMOTIVE ACCURATE RTC WITH INT	NXP Semiconductors	Active	Compliant	In Stock	RFQ
PCA2129T/Q900/2,51	IC RTC CLOCK/CALENDAR I2C 16SO	NXP Semiconductors	Active	Compliant	In Stock	RFQ

Ordering Code Differences

How suffixes on PCA2129T map to package, grade, and reel options.

How to Choose the Right PCA2129T Microcontrollers

📦

Match the footprint first

Pull the exact package drawing for your MPN — base-number swaps fail most often at the footprint, not the schematic.

⚡

Electrical headroom

Compare voltage and current columns in the variant table. For PCA2129T, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.

🌡️

Temp grade letter matters

Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.

🔢

Copy the full MPN

Do not BOM only "PCA2129T" — include the full suffix (e.g. Q900/2, Q900/2,51). RFQ with reel/tube preference and required date code.

Technical Specifications

Core parameters for PCA2129T product family

Identity

Base Model

PCA2129T

Manufacturer

NXP Semiconductors

Listed Variants

Variant Parameters

Lifecycle Status

Active

RoHS Status

Compliant

Source PCA2129T with Octatronics

Request stock confirmation, lead time, date code, and pricing for all 2 ordering variants from NXP Semiconductors. Our team supports active, EOL, and hard-to-find component sourcing.

Original manufacturer parts with traceability options
BOM upload and multi-line RFQ support
Package, grade, and compliance verification

Request Quote View NXP Semiconductors Browse all base models →

Frequently Asked Questions

Common technical questions about the PCA2129T product family.

Is PCA2129T a single part I can order, or a family prefix?

PCA2129T is a base / family code from NXP Semiconductors. You order a full MPN such as PCA2129T/Q900/2, PCA2129T/Q900/2,51. The variant table lists 2 orderable lines with different suffixes.

What do the suffix letters on PCA2129T part numbers mean?

Listed suffix fragments include: Q900/2, Q900/2,51. Typically they encode package (see Package column), temperature grade, and tape/reel option. Always decode on the NXP Semiconductors datasheet ordering guide — do not guess from pattern alone.

What is the lifecycle status of PCA2129T variants?

Lifecycle values in our listing: Active. Status is per MPN suffix — one variant can be Active while another is NRND. Check PCN for your exact suffix before multi-year commitments.

What should I send for an RFQ on PCA2129T?

Full manufacturer MPN (not just PCA2129T), quantity, needed date code, reel vs tube, and any compliance docs (CoC, RoHS, conflict minerals). If you only know the base prefix, include a photo of the existing label or reel.

Where is the PCA2129T datasheet?

Use the datasheet link in the page header. Cross-check electrical curves (SOA, saturation voltage, etc.) against your operating point — the table summarizes order codes, not every graph in the PDF.