LTE-306 Infrared Emitter 940nm Equivalent & Substitute Parts

Part Overview

The LTE-306 is an infrared (IR) emitter manufactured by Lite-On Inc., designed for applications requiring 940nm wavelength emission at 50mA forward current. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance, wavelength specification, and mechanical compatibility are maintained within the allowed parameter tolerances for radial, through-hole mounting configurations.

Substiute Parts

LTE-306

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

Current PartRFQ

AM4457F3C

KingbrightIn Stock: 15729AM4457F3C Datasheet

MFR RecommendedRFQ

QEE113

onsemiIn Stock: 569761QEE113 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTE-306 is determined by the following mandatory parameters:

• Wavelength: 940nm (exact match required)
• Current - DC Forward (If) Max: 50mA (exact match required)
• Mounting Type: Through Hole, Right Angle or Through Hole (compatible)
• Package / Case: Radial (exact match required)
• RoHS Status: RoHS3 Compliant (required)
• Operating Temperature Range: Must encompass or equal -40°C minimum and 85°C maximum

Substitute parts may vary in radiant intensity, viewing angle, and forward voltage within the constraints of the 940nm wavelength and 50mA maximum current specification. Parts meeting these criteria are electrically and mechanically compatible for direct substitution in applications designed for the LTE-306.

Parameter Comparison

Engineering Selection Recommendations

All three parts—LTE-306, AM4457F3C, and QEE113—maintain Active product status and RoHS3 compliance. Selection between these 940nm infrared emitters is based on the following provided specifications:

The LTE-306 operates within -40°C to 85°C and provides 0.662mW/sr radiant intensity at 20mA with a 30° viewing angle.

The AM4457F3C operates within the same -40°C to 85°C temperature range with increased radiant intensity of 3mW/sr at 20mA and a wider 70° viewing angle, maintaining 1.2V forward voltage.

The QEE113 extends the operating temperature range to -40°C to 100°C with 3mW/sr radiant intensity at 100mA and a 50° viewing angle, with forward voltage of 1.5V.

All parts share identical wavelength (940nm), maximum forward current (50mA), radial package configuration, and RoHS3 compliance status. Component selection depends on application requirements for viewing angle, radiant intensity output, operating temperature range, and forward voltage characteristics.

Frequently Asked Questions (FAQ)

Q: Can AM4457F3C replace LTE-306 in all applications?

A: AM4457F3C is electrically and mechanically compatible as a substitute. Both parts operate at 940nm wavelength, 50mA maximum current, 1.2V forward voltage, and -40°C to 85°C temperature range. The AM4457F3C provides higher radiant intensity (3mW/sr vs. 0.662mW/sr at 20mA) and a wider viewing angle (70° vs. 30°). Application compatibility depends on whether the circuit design accommodates these parameter differences.

Q: What are the key differences between QEE113 and LTE-306?

A: QEE113 differs in three specifications: forward voltage is 1.5V (vs. 1.2V), operating temperature extends to 100°C (vs. 85°C maximum), and radiant intensity is specified at 100mA (vs. 20mA for LTE-306). Wavelength, maximum current, and radial package remain identical. Circuit design must account for the higher forward voltage requirement.

Q: Are all three parts RoHS3 compliant?

A: Yes. LTE-306, AM4457F3C, and QEE113 are all RoHS3 compliant and suitable for applications requiring regulatory compliance in this classification.

Q: What mounting compatibility exists between these parts?

A: All three parts use radial, through-hole mounting with side-view orientation. LTE-306 and AM4457F3C specify right-angle mounting, while QEE113 specifies through-hole mounting. Physical footprint compatibility should be verified for specific PCB designs.

Q: How do viewing angles affect substitution decisions?

A: Viewing angle determines the angular distribution of infrared emission. LTE-306 provides 30°, AM4457F3C provides 70°, and QEE113 provides 50°. Applications requiring narrow-beam emission may not be compatible with wider-angle substitutes, and vice versa. Circuit design specifications must define acceptable viewing angle ranges.