ASDL-4264-C22 Equivalent & Substitute Parts

Part Overview

The ASDL-4264-C22 is an infrared (IR) emitter operating at 940nm wavelength, manufactured by Lite-On Inc. This radial through-hole component is rated for 150mA maximum forward current with a typical forward voltage of 1.2V and a radiant intensity of 6.02mW/sr at 20mA. The part is currently obsolete, necessitating identification of functionally equivalent alternatives from active product lines to maintain design continuity and ensure supply chain availability.

Key Parameters

Parameter	Value
Manufacturer Part Number	ASDL-4264-C22
Manufacturer	Lite-On Inc.
Type	Infrared (IR) Emitter
Wavelength	940nm
Current - DC Forward (If) Max	150mA
Voltage - Forward (Vf) Typical	1.2V
Radiant Intensity (Ie) Min @ If	6.02mW/sr @ 20mA
Viewing Angle	22°
Operating Temperature Range	-40°C ~ 85°C
Mounting Type	Through Hole
Package / Case	Radial
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the ASDL-4264-C22 is determined by the following critical parameters:

Primary Matching Criteria:

Wavelength: 940nm (primary function requirement)
Mounting Type: Through Hole Radial (mechanical compatibility)
Operating Temperature Range: -40°C ~ 85°C (environmental compatibility)
Forward Voltage (Vf): 1.2V (circuit design compatibility)

Secondary Considerations:

Current Rating: The original part supports 150mA; substitutes with lower current ratings (50mA, 100mA) are acceptable if circuit design permits reduced current operation
Radiant Intensity: Substitutes with equal or higher intensity maintain or improve optical performance
Viewing Angle: Substitutes with wider viewing angles (40°) provide broader light distribution; narrower angles (20°) concentrate output

Active Product Alternatives: The substitute parts are grouped into two categories based on wavelength compatibility:

940nm Wavelength Substitutes (Direct functional equivalents): EAILP05RDDA8, WP7113F3BT, XTNI12BF, XTNI12W
Alternative Wavelength Substitutes (880nm, 860nm, 850nm, 875nm): WP7113SF4C, WP7113SF6C, WP7113SF7C, XTHI12BF, XTHI12W, SIR333C

Parameter Comparison

Part Number	Manufacturer	Wavelength (nm)	Vf Typical (V)	If Max (mA)	Ie Min @ If (mW/sr)	Viewing Angle (°)	Operating Temp (°C)	Product Status
ASDL-4264-C22	Lite-On Inc.	940	1.2	150	6.02 @ 20mA	22	-40 ~ 85	Obsolete
EAILP05RDDA8	Everlight Electronics	940	1.2	100	7.8 @ 20mA	40	-25 ~ 85	Active
WP7113F3BT	Kingbright	940	1.2	50	—	20	-40 ~ 85	Active
XTNI12BF	SunLED	940	1.2	50	25 @ 50mA	20	-40 ~ 85	Active
XTNI12W	SunLED	940	1.2	50	25 @ 50mA	20	-40 ~ 85	Active
WP7113SF4C	Kingbright	880	1.3	50	12 @ 50mA	20	-40 ~ 85	Active
WP7113SF6C	Kingbright	860	1.35	50	55 @ 50mA	20	-40 ~ 85	Active
WP7113SF7C	Kingbright	850	1.4	50	50 @ 50mA	20	-40 ~ 85	Active
XTHI12BF	SunLED	880	1.3	50	12 @ 50mA	20	-40 ~ 85	Active
XTHI12W	SunLED	880	1.3	50	12 @ 50mA	20	-40 ~ 85	Active
XTNI12BF	SunLED	940	1.2	50	25 @ 50mA	20	-40 ~ 85	Active
SIR333C	Everlight Electronics	875	1.3, 1.4, 2.6	100	7.8 @ 100mA	20	-40 ~ 85	Active

Engineering Selection Recommendations

Primary Substitutes (940nm Wavelength):

EAILP05RDDA8 and XTNI12W are the preferred direct replacements. Both maintain the 940nm wavelength and 1.2V forward voltage of the original part. EAILP05RDDA8 supports 100mA operation with higher radiant intensity (7.8mW/sr @ 20mA) and wider viewing angle (40°), suitable for applications requiring broader light distribution. XTNI12W operates at 50mA with 25mW/sr @ 50mA intensity and is available in high volume (8,157 pcs in stock). Both parts are RoHS3 compliant and carry active product status.

WP7113F3BT and XTNI12BF provide 940nm operation at 50mA current rating. These are suitable for designs where reduced current consumption is acceptable. All four 940nm alternatives maintain the -40°C to 85°C operating temperature range of the original part.

Alternative Wavelength Substitutes:

WP7113SF6C, WP7113SF4C, WP7113SF7C, XTHI12BF, and XTHI12W operate at wavelengths between 850nm and 880nm. These substitutes are applicable only when the application can tolerate wavelength deviation. SIR333C operates at 875nm with multiple forward voltage options (1.3V, 1.4V, 2.6V) and supports 100mA operation, providing flexibility for different circuit configurations.

All substitute parts are through-hole radial packages with active product status and RoHS3 compliance, ensuring long-term availability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can EAILP05RDDA8 directly replace ASDL-4264-C22 in my circuit?

A: EAILP05RDDA8 is compatible if your circuit design accommodates 100mA maximum current (versus the original 150mA) and operates within the -25°C to 85°C temperature range. The 940nm wavelength and 1.2V forward voltage match the original part. The wider 40° viewing angle may affect optical performance in applications requiring narrow beam concentration.

Q: What is the difference between XTNI12W and XTNI12BF?

A: Both parts are identical in electrical and optical specifications: 940nm wavelength, 1.2V forward voltage, 50mA current rating, and 20° viewing angle. The difference is packaging: XTNI12BF is supplied in bulk, while XTNI12W is also supplied in bulk. Inventory levels differ (1,852 pcs for XTNI12BF versus 8,157 pcs for XTNI12W).

Q: Why would I use an 880nm emitter instead of 940nm?

A: Alternative wavelength substitutes (880nm, 860nm, 850nm, 875nm) are applicable only when the application's optical receiver or sensor is designed to accept a broader wavelength range. The ASDL-4264-C22 specifies 940nm operation; deviation from this wavelength requires verification that the receiving component maintains adequate sensitivity at the substitute wavelength.

Q: Are all substitute parts RoHS3 compliant?

A: All active substitute parts listed carry RoHS3 compliance certification. The original ASDL-4264-C22 does not specify RoHS status due to its obsolete status.

Q: What is the impact of lower current ratings on substitute parts?

A: Substitute parts rated at 50mA or 100mA (versus the original 150mA) operate at reduced power dissipation and optical output. Circuit designs must be verified to function within the lower current envelope. Radiant intensity specifications are provided at the rated current of each part; direct comparison requires normalization to equivalent operating conditions.

Q: Can I use SIR333C with its 2.6V forward voltage option?

A: SIR333C offers three forward voltage options (1.3V, 1.4V, 2.6V). The 2.6V option is a distinct electrical variant requiring circuit redesign. Use only the 1.3V or 1.4V variants for direct substitution compatibility with the original 1.2V design, with the understanding that wavelength differs at 875nm.

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