TSAL5100 Equivalent & Substitute Parts

Part Overview

The TSAL5100 is an infrared (IR) emitter operating at 940nm wavelength with a maximum forward current of 100mA and typical forward voltage of 1.35V. This component is designed for through-hole radial mounting applications requiring near-infrared emission in the 940nm spectrum. The TSAL5100 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Active alternatives with comparable electrical and mechanical characteristics are available from multiple manufacturers.

Key Parameters

Parameter	Value
Wavelength	940nm
Current - DC Forward (If) Max	100mA
Voltage - Forward (Vf) Typical	1.35V
Radiant Intensity (Ie) Min @ If	80mW/sr @ 100mA
Viewing Angle	20°
Mounting Type	Through Hole
Package / Case	Radial
Operating Temperature Range	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the TSAL5100 is determined by the following critical parameters:

Primary Matching Criteria:

Wavelength: 940nm (primary specification) or near-infrared alternatives at 880nm or 890nm
Current Rating: 100mA maximum forward current
Forward Voltage: 1.35V typical
Viewing Angle: 20°
Mounting Type: Through Hole Radial
Operating Temperature: -40°C ~ 85°C minimum range
RoHS Compliance: ROHS3 Compliant

Substitution Logic:

The TSAL6100 provides direct equivalence with identical electrical specifications (940nm, 100mA, 1.35V, 80mW/sr @ 100mA) and is the manufacturer-recommended upgrade from the obsolete TSAL5100. This part maintains active product status with significantly higher inventory availability.

Alternative wavelength substitutes (880nm and 890nm emitters) are grouped separately as they operate at different wavelengths but share compatible current ratings, forward voltage ranges, viewing angles, and through-hole radial mounting. These alternatives are suitable only when the application permits wavelength deviation within the near-infrared spectrum.

Parameter Comparison

Part Number	Manufacturer	Wavelength	If (Max)	Vf (Typ)	Ie Min @ If	Viewing Angle	Package	Operating Temp	Status
TSAL5100	Vishay Semiconductor Opto Division	940nm	100mA	1.35V	80mW/sr @ 100mA	20°	Radial	-40°C ~ 85°C	Obsolete
TSAL6100	Vishay Semiconductor Opto Division	940nm	100mA	1.35V	80mW/sr @ 100mA	20°	Radial, 5mm Dia (T 1 3/4)	-40°C ~ 85°C	Active
LTE-4238	Lite-On Inc.	880nm	100mA	1.3V	4.81mW/sr @ 20mA	20°	Radial	-40°C ~ 85°C	Active
OP295A	TT Electronics/Optek Technology	890nm	150mA	4V	—	20°	T 1 3/4	-40°C ~ 100°C	Active
OP295B	TT Electronics/Optek Technology	890nm	150mA	4V	—	20°	T 1 3/4	-40°C ~ 100°C	Active
OP296A	TT Electronics/Optek Technology	890nm	150mA	2V	—	20°	T 1 3/4	-40°C ~ 100°C	Active
OP296B	TT Electronics/Optek Technology	890nm	150mA	2V	—	20°	T 1 3/4	-40°C ~ 100°C	Active
OP297A	TT Electronics/Optek Technology	890nm	150mA	1.75V	—	20°	T 1 3/4	-40°C ~ 100°C	Active
OP299	TT Electronics/Optek Technology	890nm	100mA	1.5V	—	20°	T 1 3/4	-40°C ~ 100°C	Active
XTHI12BF	SunLED	880nm	50mA	1.3V	12mW/sr @ 50mA	20°	Radial	-40°C ~ 85°C	Active
XTHI12W	SunLED	880nm	50mA	1.3V	12mW/sr @ 50mA	20°	Radial	-40°C ~ 85°C	Active

Engineering Selection Recommendations

Primary Recommendation: TSAL6100

The TSAL6100 is the direct manufacturer-recommended equivalent for the obsolete TSAL5100. Both parts are manufactured by Vishay Semiconductor Opto Division and share identical electrical specifications: 940nm wavelength, 100mA maximum forward current, 1.35V typical forward voltage, and 80mW/sr radiant intensity at 100mA. The TSAL6100 maintains active product status with ROHS3 compliance and significantly higher inventory availability (213,788 units in stock versus 17,231 for the TSAL5100). This part is suitable for direct replacement in existing designs without circuit modification.

Alternative Wavelength Substitutes:

For applications where wavelength flexibility is permitted, the following active parts provide compatible current ratings and forward voltage characteristics:

OP299 (TT Electronics/Optek Technology): 890nm wavelength, 100mA maximum current, 1.5V typical forward voltage, T 1 3/4 package. Matches the TSAL5100 current rating and provides comparable forward voltage. Operating temperature range extends to 100°C.
LTE-4238 (Lite-On Inc.): 880nm wavelength, 100mA maximum current, 1.3V typical forward voltage, radial package. Maintains radial mounting compatibility with the TSAL5100 and operates within the same temperature range.
XTHI12W and XTHI12BF (SunLED): 880nm wavelength, 50mA maximum current, 1.3V typical forward voltage, radial package. These parts operate at reduced current levels and are suitable only for applications with lower current requirements.

All substitute parts listed maintain ROHS3 compliance and are classified as active products with confirmed inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the TSAL6100 be used as a direct replacement for the TSAL5100?

A: Yes. The TSAL6100 is the manufacturer-recommended equivalent with identical electrical specifications (940nm, 100mA, 1.35V, 80mW/sr @ 100mA) and compatible radial through-hole mounting. No circuit modifications are required.

Q: What is the primary difference between the TSAL5100 and TSAL6100?

A: The TSAL5100 is obsolete while the TSAL6100 is active. Both parts share identical electrical and optical characteristics. The TSAL6100 includes a specified package dimension (5mm Dia T 1 3/4) and higher inventory availability.

Q: Can I substitute an 890nm or 880nm emitter for the 940nm TSAL5100?

A: Substitution with alternative wavelengths is possible only if the application design permits wavelength deviation. The OP299 (890nm, 100mA) and LTE-4238 (880nm, 100mA) maintain compatible current ratings and forward voltage characteristics. However, optical system performance may be affected by wavelength differences. Verify detector sensitivity and optical filter specifications before implementation.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: wavelength (940nm primary, or near-infrared alternatives), maximum forward current (100mA for direct equivalence), forward voltage (1.35V typical), viewing angle (20°), mounting type (through-hole radial), operating temperature range (-40°C ~ 85°C minimum), and RoHS compliance status.

Q: Why do some substitute parts have higher maximum current ratings (150mA)?

A: Parts such as OP295A, OP295B, OP296A, OP296B, and OP297A are rated for 150mA maximum forward current. These parts can be operated at the TSAL5100's 100mA specification, but circuit design must account for the different forward voltage characteristics (ranging from 1.75V to 4V depending on part number).

Q: Are all listed substitute parts RoHS compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance status, consistent with the TSAL5100 specification.

Q: What is the difference between XTHI12W and XTHI12BF?

A: Both parts are manufactured by SunLED with identical electrical specifications (880nm, 50mA, 1.3V, 12mW/sr @ 50mA) and radial packaging. The designations W and BF indicate packaging or lead configuration variants. Both are active products with confirmed inventory availability.

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