TSUS4400-CSZ Equivalent & Substitute Parts

Part Overview

The TSUS4400-CSZ is an Infrared (IR) Emitter manufactured by Vishay Semiconductor Opto Division, designed for through-hole applications requiring 950nm wavelength emission. This component operates at 1.3V forward voltage with a maximum DC forward current of 100mA and delivers 7mW/sr radiant intensity at rated current. The device features a 3mm radial package with a 36° viewing angle and is rated for operating temperatures from -40°C to 85°C.

The TSUS4400-CSZ is classified as Obsolete. Locating equivalent substitute components is necessary to support ongoing production requirements, maintenance operations, and system redesigns where this part is specified.

Substiute Parts

TSUS4400-CSZ

Vishay Semiconductor Opto DivisionIn Stock: 785TSUS4400-CSZ Datasheet

Current PartRFQ

INL-5AHIR30

InoluxIn Stock: 3003INL-5AHIR30 Datasheet

SimilarRFQ

INL-5AHIR30

InoluxIn Stock: 3003INL-5AHIR30 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TSUS4400-CSZ is determined by the following critical parameters:

Functional Compatibility Parameters:

• Type: Infrared (IR) Emitter
• Mounting Type: Through Hole
• Current - DC Forward (If) Maximum: 100mA
• Voltage - Forward (Vf) Typical: 1.3V or lower
• Radiant Intensity (Ie) Minimum @ If: 7mW/sr or greater
• Operating Temperature Range: Must encompass -40°C minimum and 85°C maximum, or be compatible with the application's actual operating window

Physical Compatibility Parameters:

• Package / Case: Radial configuration
• Viewing Angle: 36° or wider (narrower angles are not suitable)

Regulatory Compliance Parameters:

• RoHS Status: ROHS3 Compliant

The INL-5AHIR30 from Inolux qualifies as a substitute based on matching or exceeding these critical parameters within the allowed electrical and mechanical specifications for this product category.

Parameter Comparison

Engineering Selection Recommendations

The INL-5AHIR30 from Inolux is available as a substitute for the obsolete TSUS4400-CSZ. Both components are ROHS3 Compliant and rated for through-hole mounting with 100mA maximum forward current.

Key Considerations for Selection:

The INL-5AHIR30 operates at a lower typical forward voltage (1.2V versus 1.3V), which reduces power dissipation in the circuit. The radiant intensity specification of 7.8mW/sr at 20mA exceeds the TSUS4400-CSZ minimum of 7mW/sr at 100mA, indicating superior optical output efficiency.

The viewing angle of the INL-5AHIR30 is 30° compared to the TSUS4400-CSZ at 36°. This represents a narrower emission cone and must be evaluated against the application's optical requirements.

The wavelength difference of 10nm (940nm versus 950nm) places both components within the near-infrared spectrum. Compatibility depends on the receiver photodiode or sensor specifications in the application circuit.

The operating temperature range of the INL-5AHIR30 extends to 80°C maximum, which is 5°C lower than the TSUS4400-CSZ specification of 85°C. Applications operating near the upper temperature limit require confirmation that 80°C is acceptable.

The INL-5AHIR30 is currently in Active production status, ensuring availability and supply chain continuity compared to the Obsolete TSUS4400-CSZ.

Frequently Asked Questions (FAQ)

Q: Can the INL-5AHIR30 be used as a direct replacement for the TSUS4400-CSZ?

A: The INL-5AHIR30 is functionally compatible for through-hole IR emitter applications. Both components share the same maximum forward current (100mA), mounting type, and RoHS compliance. However, three parameters differ: wavelength (940nm vs. 950nm), viewing angle (30° vs. 36°), and maximum operating temperature (80°C vs. 85°C). Substitution is valid when the application's receiver, optical design, and thermal requirements accommodate these differences.

Q: What is the significance of the 10nm wavelength difference between 950nm and 940nm?

A: Both wavelengths fall within the near-infrared spectrum used for remote control, sensing, and communication applications. The specific wavelength compatibility depends on the photodiode or IR receiver in the application circuit. If the receiver is tuned to 950nm, the 940nm emitter may produce reduced signal strength. Consult the receiver component specifications to confirm wavelength compatibility.

Q: Why is the viewing angle narrower on the INL-5AHIR30 (30° vs. 36°)?

A: The viewing angle defines the cone of light emission from the component. A narrower 30° angle concentrates the optical output into a tighter beam, which increases intensity in the forward direction but reduces coverage at wider angles. Applications requiring wide-angle coverage may not be suitable for the INL-5AHIR30. Evaluate the optical geometry and receiver placement in your application.

Q: Is the 5°C difference in maximum operating temperature (80°C vs. 85°C) significant?

A: The difference is significant only for applications operating continuously near or above 80°C. If your application's maximum operating temperature is 80°C or lower, the INL-5AHIR30 is fully compatible. If sustained operation above 80°C is required, the lower temperature rating of the INL-5AHIR30 may not meet specifications.

Q: What does the lower forward voltage (1.2V vs. 1.3V) of the INL-5AHIR30 mean for circuit design?

A: The lower forward voltage reduces the voltage drop across the component during operation, resulting in lower power dissipation and reduced heat generation. This is generally beneficial for circuit efficiency. However, if the circuit is designed with specific current-limiting resistor values based on the 1.3V specification, the lower voltage may result in slightly higher forward current through the component. Recalculate current-limiting resistor values to maintain the desired 100mA maximum current.

Q: Are both components through-hole mounted?

A: Yes. Both the TSUS4400-CSZ and INL-5AHIR30 are through-hole mounted components with radial package configurations, suitable for insertion into printed circuit boards with standard lead spacing.

Q: What is the inventory status of these components?

A: The TSUS4400-CSZ is Obsolete with 740 pieces currently in stock. The INL-5AHIR30 is Active in production with 2949 pieces in stock, providing superior long-term availability and supply chain reliability.