VTT3425LAH Equivalent & Substitute Parts

Part Overview

The VTT3425LAH is a phototransistor optical sensor manufactured by Excelitas Technologies, featuring top view radial orientation and through-hole mounting. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design requirements and production continuity. The VTT3425LAH operates with a maximum collector-emitter breakdown voltage of 30V and collector current of 3mA, designed for applications requiring photoelectric detection in a compact radial package.

Substiute Parts

VTT3425LAH

Excelitas TechnologiesIn Stock: 908VTT3425LAH Datasheet

Current PartRFQ

LTR-209

Lite-On Inc.In Stock: 7403LTR-209 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the VTT3425LAH is determined by the following critical parameters:

• Mounting Type: Must be Through Hole to maintain PCB compatibility
• Orientation: Must be Top View to preserve optical axis alignment
• Package / Case: Must be Radial to ensure mechanical fit in existing designs
• Voltage - Collector Emitter Breakdown (Max): Minimum 30V required; higher ratings are acceptable
• Current - Collector (Ic) (Max): Minimum 3mA required; higher ratings are acceptable
• Current - Dark (Id) (Max): Maximum 100nA; lower values are acceptable
• Viewing Angle: Minimum 10°; wider angles are acceptable for general applications
• Moisture Sensitivity Level (MSL): Level 1 (Unlimited) required for storage compatibility

The LTR-209 meets all substitution criteria, offering enhanced specifications including active product status, wider viewing angle (16°), specified wavelength (940nm), and extended operating temperature range (-40°C ~ 85°C).

Parameter Comparison

Engineering Selection Recommendations

The LTR-209 is the qualified substitute for the obsolete VTT3425LAH. Selection is based on the following factors:

• Product Status: LTR-209 is Active, ensuring long-term availability and supply chain continuity
• Compliance: LTR-209 is ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements
• Electrical Compatibility: All critical electrical parameters meet or exceed VTT3425LAH specifications
• Mechanical Compatibility: Identical mounting type, orientation, and package configuration ensure direct PCB fit
• Operational Enhancement: Extended operating temperature range (-40°C ~ 85°C) and specified wavelength (940nm) provide improved application flexibility

Frequently Asked Questions (FAQ)

Q: Can the LTR-209 be used as a direct replacement for the VTT3425LAH?

A: Yes. The LTR-209 meets all mechanical and electrical substitution criteria. Both components feature identical through-hole radial mounting, top view orientation, and matching voltage/current specifications. The LTR-209 offers enhanced specifications including higher collector current (4mA vs 3mA) and wider viewing angle (16° vs 10°).

Q: What are the key differences between these components?

A: The LTR-209 provides a wider viewing angle (16° vs 10°), higher maximum collector current (4mA vs 3mA), specified wavelength (940nm), and extended operating temperature range (-40°C ~ 85°C). Both maintain identical voltage ratings, dark current specifications, and radial package configuration.

Q: Are there any compliance or certification differences?

A: The LTR-209 includes ROHS3 Compliance and REACH Unaffected status, meeting current regulatory standards. Both components carry MSL Level 1 (Unlimited) moisture sensitivity rating and identical ECCN/HTSUS classifications.

Q: Will the LTR-209 fit existing PCB layouts designed for the VTT3425LAH?

A: Yes. Both components use identical through-hole radial packaging, ensuring mechanical compatibility with existing PCB designs without layout modifications.

Q: What is the inventory status for these components?

A: The VTT3425LAH is obsolete with 837 pieces available. The LTR-209 is active with 7,300 pieces in stock, providing superior supply chain availability.