Panasonic LN69 Infrared Emitter - Equivalent & Substitute Parts

Part Overview

The Panasonic LN69 is a T-1 package infrared (IR) emitter operating at 940nm wavelength, designed for applications requiring near-infrared light emission. Specified for 50mA maximum forward current with 1.3V typical forward voltage, this component delivers 4.6mW/sr radiant intensity at rated current with a 30° viewing angle.

The LN69 is classified as obsolete, necessitating identification of active substitute components for new designs and ongoing production requirements. Substitute parts must maintain compatibility across wavelength, package type, mounting configuration, and thermal operating range to ensure functional equivalence in target applications.

Substiute Parts

LN69

Panasonic Electronic ComponentsIn Stock: 1195LN69 Datasheet

Current PartRFQ

LTE-4206

Lite-On Inc.In Stock: 31109LTE-4206 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Panasonic LN69 is determined by the following mandatory parameters:

• Wavelength: Must be 940nm to maintain spectral compatibility with receiver optics and filter characteristics
• Package / Case: Must be T-1 to ensure mechanical fit and thermal interface consistency
• Mounting Type: Must be Through Hole to maintain PCB assembly compatibility
• Operating Temperature Range: Must encompass or exceed -25°C to 85°C to support the original operating envelope
• Orientation: Must be Top View to maintain optical axis alignment

Secondary parameters including forward current rating, forward voltage, radiant intensity, and viewing angle may vary within acceptable application-dependent tolerances, provided the substitute component can be driven within its specified electrical limits and delivers sufficient optical output for the target application.

Parameter Comparison

Engineering Selection Recommendations

The Lite-On LTE-4206 qualifies as a functional substitute for the Panasonic LN69 based on matched wavelength (940nm), package type (T-1), mounting configuration (Through Hole), and operating temperature envelope compatibility.

Product Status Consideration: The LTE-4206 maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete LN69.

Compliance Status: The LTE-4206 is RoHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronic component procurement.

Application-Specific Verification: Designs currently operating the LN69 at maximum rated current (50mA) can operate the LTE-4206 within its specified limits. The LTE-4206 exhibits a narrower viewing angle (20° versus 30°), requiring verification that optical coverage remains adequate for the target application. The 0.1V reduction in typical forward voltage (1.2V versus 1.3V) must be confirmed compatible with existing driver circuits.

Frequently Asked Questions (FAQ)

Q: Can the Lite-On LTE-4206 directly replace the Panasonic LN69 without circuit modification?

A: Direct mechanical and electrical substitution is possible for applications operating at or below 50mA forward current. However, the reduced viewing angle (20° versus 30°) and lower typical forward voltage (1.2V versus 1.3V) require verification against specific application requirements. Driver circuits must confirm compatibility with the LTE-4206 forward voltage specification.

Q: What is the significance of the different radiant intensity specifications?

A: The LN69 specifies 4.6mW/sr @ 50mA, while the LTE-4206 specifies 1.38mW/sr @ 20mA. These measurements are taken at different forward currents, preventing direct numerical comparison. Optical output must be evaluated at the actual operating current of the target application to determine if the LTE-4206 delivers sufficient radiant intensity.

Q: Does the LTE-4206 support the full operating temperature range of the LN69?

A: Yes. The LTE-4206 operating range (-40°C to 85°C) encompasses and exceeds the LN69 range (-25°C to 85°C), providing extended low-temperature capability.

Q: Are there any packaging or handling differences between these components?

A: Both components feature T-1 package configuration with Through Hole mounting and identical Moisture Sensitivity Level (MSL 1 - Unlimited). Packaging differences are limited to the LTE-4206 being supplied in Bulk format versus the LN69 specification. Standard handling procedures for MSL 1 components apply to both.

Q: What compliance certifications apply to the LTE-4206?

A: The LTE-4206 is RoHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic component use in regulated markets.