Bourns CD143A

CD143A variants from Bourns

CD143A Datasheet

Variants

Mfr

Bourns

Lifecycle

Active

CD143A Overview

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

Key Features

Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
6 distinct suffix patternsExamples: SR05, SR05LC, SR12, SR2.8, SR3.3 (+1 more). Decode suffix meaning in the ordering notes under the variant table.

Target Applications

TVS Diodes — 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 6 CD143A 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
CD143A-SR05	TVS DIODE 5VWM 20VC SOT143	Bourns	Active	Compliant	In Stock	RFQ
CD143A-SR05LC	TVS DIODE 5VWM 20VC SOT143	Bourns	Active	Compliant	In Stock	RFQ
CD143A-SR12	TVS DIODE 12VWM 30VC SOT143	Bourns	Active	Compliant	In Stock	RFQ
CD143A-SR2.8	TVS DIODE 2.8VWM 5VC SOT143	Bourns	Active	Compliant	In Stock	RFQ
CD143A-SR3.3	TVS DIODE 3.3VWM 7VC SOT143	Bourns	Active	Compliant	In Stock	RFQ
CD143A-SR70	TVS DIODE 7VC SOT143	Bourns	Active	Compliant	In Stock	RFQ

Ordering Code Differences

How suffixes on CD143A map to package, grade, and reel options.

How to Choose the Right CD143A TVS Diodes

📦

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 CD143A, 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 "CD143A" — include the full suffix (e.g. SR05, SR05LC, SR12). RFQ with reel/tube preference and required date code.

Technical Specifications

Core parameters for CD143A product family

Identity

Base Model

CD143A

Manufacturer

Bourns

Listed Variants

Variant Parameters

Lifecycle Status

Active

RoHS Status

Compliant

Source CD143A with Octatronics

Request stock confirmation, lead time, date code, and pricing for all 6 ordering variants from Bourns. 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 Bourns Browse all base models →

Frequently Asked Questions

Common technical questions about the CD143A product family.

Is CD143A a single part I can order, or a family prefix?

CD143A is a base / family code from Bourns. You order a full MPN such as CD143A-SR05, CD143A-SR05LC, CD143A-SR12. The variant table lists 6 orderable lines with different suffixes.

What do the suffix letters on CD143A part numbers mean?

Listed suffix fragments include: SR05, SR05LC, SR12, SR2.8, SR3.3, SR70. Typically they encode package (see Package column), temperature grade, and tape/reel option. Always decode on the Bourns datasheet ordering guide — do not guess from pattern alone.

What is the lifecycle status of CD143A 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 CD143A?

Full manufacturer MPN (not just CD143A), 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 CD143A 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.