Equivalent & Substitute Parts for WP7113F3C Infrared Emitter

Part Overview

The WP7113F3C is an infrared (IR) emitter manufactured by Kingbright, designed for applications requiring 940nm wavelength emission at 50mA maximum forward current. This through-hole radial component operates across the industrial temperature range of -40°C to 85°C and maintains active product status with full RoHS3 compliance. Substitute parts are identified when equivalent electrical and mechanical parameters align with application requirements, enabling component sourcing flexibility while maintaining circuit performance specifications.

Key Parameters

Parameter	Value	Unit
Wavelength	940	nm
Current - DC Forward (If) Max	50	mA
Voltage - Forward (Vf) Typical	1.2	V
Radiant Intensity (Ie) Min @ If	15	mW/sr @ 30mA
Viewing Angle	20	°
Operating Temperature Range	-40 to 85	°C
Mounting Type	Through Hole	—
Package / Case	Radial	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the WP7113F3C are grouped based on alignment with the following critical parameters:

Primary Substitution Criteria:

Wavelength: 940nm (exact match required for spectral compatibility)
Current - DC Forward (If) Max: 50mA (circuit current rating compatibility)
Voltage - Forward (Vf) Typical: 1.2V (power supply and driver circuit compatibility)
Viewing Angle: 20° (optical field-of-view consistency)
Mounting Type: Through Hole (PCB assembly process compatibility)
Package / Case: Radial (mechanical fit and board layout compatibility)
Operating Temperature Range: -40°C to 85°C (environmental specification match)
RoHS3 Compliance: Required (regulatory and supply chain requirement)

Group 1: Exact Wavelength Match (940nm) Parts XTNI12W and XTNI12BF (both SunLED) match the 940nm wavelength, 50mA current rating, 1.2V forward voltage, 20° viewing angle, through-hole radial package, and full temperature range. These parts are direct functional equivalents with identical electrical and mechanical specifications.

Group 2: Alternative Wavelength (880nm) Parts XTHI12W and XTHI12BF (both SunLED) operate at 880nm wavelength with 50mA current rating, 1.3V forward voltage, 20° viewing angle, through-hole radial package, and full temperature range. These parts are substitutable only in applications where 880nm wavelength is acceptable.

Group 3: Alternative Wavelength (875nm) Part SIR383C (Everlight Electronics) operates at 875nm wavelength with 100mA maximum current rating, 1.3V forward voltage, 20° viewing angle, through-hole radial package, and full temperature range. This part is substitutable only in applications where 875nm wavelength is acceptable and circuit design accommodates higher current capability.

Parameter Comparison

Part Number	Manufacturer	Wavelength (nm)	If Max (mA)	Vf Typ (V)	Ie Min @ If (mW/sr)	Viewing Angle (°)	Operating Temp (°C)	Package	RoHS3
WP7113F3C	Kingbright	940	50	1.2	15 @ 30mA	20	-40 to 85	Radial	Yes
XTNI12W	SunLED	940	50	1.2	25 @ 50mA	20	-40 to 85	Radial	Yes
XTNI12BF	SunLED	940	50	1.2	25 @ 50mA	20	-40 to 85	Radial	Yes
XTHI12W	SunLED	880	50	1.3	12 @ 50mA	20	-40 to 85	Radial	Yes
XTHI12BF	SunLED	880	50	1.3	12 @ 50mA	20	-40 to 85	Radial	Yes
SIR383C	Everlight Electronics	875	100	1.3	11 @ 20mA	20	-40 to 85	Radial	Yes

Engineering Selection Recommendations

Direct Substitution (Wavelength-Matched): XTNI12W and XTNI12BF are functionally equivalent to WP7113F3C. Both parts maintain 940nm wavelength, 50mA current rating, 1.2V forward voltage, and identical mechanical specifications. Both manufacturers hold active product status and maintain RoHS3 compliance. Selection between these parts depends on packaging variant availability and supply chain considerations.

Conditional Substitution (Alternative Wavelength - 880nm): XTHI12W and XTHI12BF are substitutable when application design accepts 880nm wavelength operation. Forward voltage increases to 1.3V, requiring circuit verification. Radiant intensity specification differs (12mW/sr @ 50mA versus 15mW/sr @ 30mA), necessitating optical performance validation. Both parts maintain 50mA current rating and identical mechanical specifications.

Conditional Substitution (Alternative Wavelength - 875nm): SIR383C is substitutable when application design accepts 875nm wavelength operation. This part supports 100mA maximum current, exceeding WP7113F3C capability. Forward voltage is 1.3V. Radiant intensity specification is 11mW/sr @ 20mA. Circuit design must accommodate higher current capability and verify optical performance requirements.

Compliance Verification: All substitute parts maintain RoHS3 compliance, REACH unaffected status, and EAR99 ECCN classification, matching the regulatory profile of WP7113F3C. All parts operate across -40°C to 85°C temperature range. All parts feature through-hole radial package configuration.

Frequently Asked Questions (FAQ)

Q: Can XTNI12W or XTNI12BF replace WP7113F3C without circuit modification?

A: Yes. Both parts match the critical electrical parameters: 940nm wavelength, 50mA maximum current, 1.2V forward voltage, and 20° viewing angle. Mechanical compatibility is confirmed through identical through-hole radial package specifications. No circuit redesign is required.

Q: What is the difference between XTNI12W and XTNI12BF?

A: Both parts are manufactured by SunLED with identical electrical and mechanical specifications. The designation suffix indicates packaging variant. Selection depends on supply availability and procurement requirements.

Q: Can XTHI12W or XTHI12BF be used as direct replacements?

A: These parts are mechanically and thermally compatible but operate at 880nm wavelength instead of 940nm. Forward voltage increases to 1.3V. Substitution is valid only when application design accepts 880nm wavelength operation and circuit verification confirms 1.3V forward voltage compatibility.

Q: Is SIR383C a suitable substitute?

A: SIR383C is mechanically compatible but operates at 875nm wavelength with 100mA maximum current rating and 1.3V forward voltage. Substitution requires confirmation that application design accepts 875nm wavelength and that circuit design accommodates higher current capability.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All listed substitute parts maintain RoHS3 compliance, REACH unaffected status, and EAR99 ECCN classification. All parts operate across the -40°C to 85°C temperature range specified for WP7113F3C.

Q: What parameters must match for a valid substitution?

A: Mounting type (through-hole), package configuration (radial), viewing angle (20°), and operating temperature range (-40°C to 85°C) must match. Wavelength, forward current rating, and forward voltage must be verified for circuit compatibility. RoHS3 compliance is mandatory.

Q: Can wavelength differences affect circuit performance?

A: Yes. Wavelength determines spectral compatibility with photodetectors and optical filters in the receiving circuit. 940nm, 880nm, and 875nm are distinct wavelengths. Substitution with alternative wavelengths requires verification that the receiving circuit accepts the different wavelength specification.

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