PT958-8C Equivalent & Substitute Parts Reference

Part Overview

The PT958-8C is a 940nm phototransistor manufactured by Everlight Electronics Co Ltd, designed for optical sensing applications requiring side view radial configuration with through-hole, right-angle mounting. This component operates across the industrial temperature range of -25°C to 85°C and features a collector-emitter breakdown voltage of 30V with maximum collector current of 20mA.

The PT958-8C is classified as obsolete. Identification of equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

PT958-8C

Everlight Electronics Co LtdIn Stock: 25183PT958-8C Datasheet

Current PartRFQ

PT968-8C

Everlight Electronics Co LtdIn Stock: 52176PT968-8C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PT958-8C is determined by strict alignment across the following critical parameters:

Optical Characteristics: Wavelength must be 940nm to maintain spectral response compatibility with existing optical system design and infrared source wavelengths.

Electrical Performance: Voltage-collector-emitter breakdown rating must be 30V or greater; maximum collector current must be 20mA or greater; maximum dark current must not exceed 100nA to preserve signal integrity and noise performance.

Mechanical & Mounting: Mounting type must be through-hole with right-angle configuration; orientation must be side view; package form must be radial to ensure PCB footprint compatibility and optical axis alignment with existing mechanical assemblies.

Environmental Compliance: Operating temperature range must encompass -25°C to 85°C minimum to support the full operational envelope of the original design.

The PT968-8C satisfies all substitution criteria across these parameters and is classified as an active product, providing supply continuity for the obsolete PT958-8C.

Parameter Comparison

Engineering Selection Recommendations

The PT968-8C is a direct functional equivalent to the PT958-8C across all critical electrical, optical, and mechanical parameters. Both components are manufactured by Everlight Electronics Co Ltd and share identical specifications for wavelength, voltage rating, current capability, dark current, mounting configuration, orientation, and operating temperature range.

The primary distinction is product status: PT958-8C is obsolete, while PT968-8C is active and currently in production. This status difference eliminates supply risk and ensures long-term component availability for new production runs and design revisions.

The PT968-8C is supplied in Tape & Reel (TR) packaging format, which is standard for automated assembly and volume manufacturing. This packaging format is compatible with pick-and-place equipment and provides cost efficiency for production quantities.

Both components maintain REACH compliance status and are subject to identical trade classifications (ECCN: EAR99; HTSUS: 8541.49.7080).

Selection of PT968-8C as a replacement for PT958-8C requires no circuit redesign, no PCB layout modification, and no optical system recalibration. Direct substitution is supported by parameter equivalence.

Frequently Asked Questions (FAQ)

Q: Can PT968-8C be used as a direct replacement for PT958-8C in existing designs?

A: Yes. The PT968-8C meets all electrical, optical, and mechanical specifications of the PT958-8C. No circuit modifications, PCB layout changes, or firmware adjustments are required. The component is pin-compatible and functionally equivalent.

Q: What is the difference between the packaging formats?

A: PT958-8C is supplied in bulk packaging; PT968-8C is supplied in Tape & Reel (TR) format. TR packaging is optimized for automated assembly processes and high-volume production. Both formats contain identical components with identical performance characteristics.

Q: Are there any compliance or certification differences?

A: No. Both components share identical REACH compliance status (REACH Unaffected), identical ECCN classification (EAR99), and identical HTSUS codes (8541.49.7080). No additional compliance documentation or certification is required when transitioning from PT958-8C to PT968-8C.

Q: Why is PT958-8C classified as obsolete?

A: Obsolescence classification indicates that the manufacturer has discontinued production of this part number. PT968-8C is the active equivalent maintained in current production by Everlight Electronics Co Ltd.

Q: What is the current inventory status?

A: PT968-8C has 52,110 pieces in stock as new original inventory. This active production status ensures reliable supply for ongoing and future production requirements.

Q: Are the optical characteristics identical?

A: Yes. Both components operate at 940nm wavelength with identical dark current specifications (100nA maximum). Optical response, spectral sensitivity, and infrared detection performance are equivalent.

Q: Can PT968-8C be used in existing PCB assemblies designed for PT958-8C?

A: Yes. The PT968-8C maintains identical through-hole, right-angle mounting configuration and radial side-view package form. No PCB rework or mechanical modification is required.