IR958-8P Equivalent & Substitute Parts Reference

Part Overview

The IR958-8P is an infrared (IR) emitter manufactured by Everlight Electronics Co Ltd, designed for applications requiring 950nm wavelength emission at 50mA forward current. This component features a radial through-hole mounting configuration with a 11° viewing angle and operates across the temperature range of -25°C to 85°C.

The IR958-8P is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for systems utilizing this infrared emitter specification.

Substiute Parts

IR958-8P

Everlight Electronics Co LtdIn Stock: 37080IR958-8P Datasheet

Current PartRFQ

LTE-306

Lite-On Inc.In Stock: 27403LTE-306 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IR958-8P is determined by the following critical parameters that must align between the main part and substitute candidates:

Primary Compatibility Criteria:

• Mounting Type & Package: Through Hole, Right Angle, Radial configuration
• Electrical Specifications: Maximum forward current of 50mA and forward voltage of 1.2V
• Wavelength Range: Infrared emitters in the 940nm to 950nm spectrum
• Orientation: Side View configuration for PCB integration
• Temperature Operating Range: Minimum coverage of -25°C to 85°C

Secondary Considerations:

• Viewing angle tolerance (original specification: 11°)
• Radiant intensity characteristics where specified
• Product status and supply availability

The LTE-306 from Lite-On Inc. qualifies as a substitute based on matching electrical parameters (50mA maximum forward current, 1.2V forward voltage), identical mounting configuration (Through Hole, Right Angle, Radial), and compatible wavelength specification (940nm, within infrared spectrum). The LTE-306 maintains Side View orientation and extends the operating temperature range to -40°C to 85°C, providing enhanced low-temperature performance.

Parameter Comparison

Engineering Selection Recommendations

LTE-306 Substitution Assessment:

The LTE-306 from Lite-On Inc. is suitable as a substitute for the obsolete IR958-8P based on the following engineering factors:

Electrical Compatibility: Both components share identical maximum forward current (50mA) and forward voltage (1.2V) specifications, ensuring circuit-level compatibility without modification to current-limiting resistor networks or power supply configurations.

Mechanical Compatibility: Identical mounting type (Through Hole, Right Angle), package configuration (Radial), and orientation (Side View) enable direct PCB footprint compatibility without layout redesign.

Wavelength Consideration: The LTE-306 operates at 940nm compared to the IR958-8P at 950nm. Both wavelengths fall within the infrared spectrum and are suitable for standard IR receiver applications. The 10nm difference does not constitute a functional incompatibility for typical infrared sensing and communication applications.

Product Status & Supply: The LTE-306 is classified as Active with documented inventory availability (27,315 pcs), whereas the IR958-8P is Obsolete. This transition addresses supply chain continuity.

Compliance & Certifications: The LTE-306 carries ROHS3 compliance certification and maintains identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, supporting regulatory and trade requirements.

Temperature Performance: The LTE-306 extends the operating temperature range to -40°C to 85°C, providing enhanced performance in low-temperature environments compared to the IR958-8P specification of -25°C to 85°C.

Viewing Angle Difference: The LTE-306 features a 30° viewing angle compared to the IR958-8P at 11°. This represents a wider emission pattern. Applications requiring the narrower 11° beam profile of the original component should evaluate whether the broader 30° angle is acceptable for the intended optical design.

Frequently Asked Questions (FAQ)

Q1: Can the LTE-306 be used as a direct replacement for the IR958-8P without circuit modifications?

A: Yes, the LTE-306 can be used as a direct replacement from an electrical perspective. Both components share identical maximum forward current (50mA) and forward voltage (1.2V) specifications. No modifications to current-limiting resistors or power supply circuits are required. However, the wider 30° viewing angle of the LTE-306 compared to the 11° angle of the IR958-8P may affect optical system performance and should be evaluated for the specific application.

Q2: What is the significance of the wavelength difference between 950nm (IR958-8P) and 940nm (LTE-306)?

A: Both 950nm and 940nm wavelengths operate within the infrared spectrum and are compatible with standard infrared receiver photodiodes and phototransistors used in consumer and industrial applications. The 10nm difference is within typical receiver sensitivity ranges. Applications with wavelength-specific requirements should verify receiver compatibility with the 940nm specification.

Q3: Does the LTE-306 require different PCB footprint or mounting considerations?

A: No. Both the IR958-8P and LTE-306 utilize identical mounting specifications: Through Hole, Right Angle configuration with Radial package and Side View orientation. The PCB footprint remains unchanged, and no layout modifications are necessary.

Q4: What is the impact of the extended operating temperature range of the LTE-306 (-40°C to 85°C versus -25°C to 85°C)?

A: The LTE-306 provides enhanced low-temperature performance, extending operation to -40°C compared to the IR958-8P minimum of -25°C. This is advantageous for applications deployed in cold environments. The upper temperature limit (85°C) remains identical. Applications operating within the original -25°C to 85°C range experience no negative impact from this extended specification.

Q5: Are there compliance or regulatory differences between the IR958-8P and LTE-306?

A: Both components share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications. The LTE-306 carries ROHS3 compliance certification, which is advantageous for applications subject to RoHS regulations. No compliance barriers exist for substitution.

Q6: What is the radiant intensity specification of the LTE-306, and how does it compare to the IR958-8P?

A: The LTE-306 specifies radiant intensity of 0.662mW/sr at 20mA forward current. The IR958-8P does not provide a radiant intensity specification in the available documentation. For applications requiring specific radiant intensity values, direct measurement or manufacturer consultation is necessary to confirm performance equivalence.

Q7: Is the LTE-306 actively manufactured and available in inventory?

A: Yes. The LTE-306 is classified as Active product status with documented inventory of 27,315 pcs available. The IR958-8P is Obsolete, making the LTE-306 the appropriate choice for ongoing production and supply chain continuity.

Q8: How does the 30° viewing angle of the LTE-306 affect optical system design compared to the 11° angle of the IR958-8P?

A: The LTE-306 produces a wider emission pattern (30°) compared to the narrower beam of the IR958-8P (11°). This affects the spatial distribution of infrared radiation. Applications requiring focused, narrow-beam emission should evaluate whether the broader 30° angle is compatible with the optical receiver placement and system geometry. Applications with distributed or wide-angle receiver arrays may benefit from the broader emission pattern.