TSKS5400-FSZ Equivalent & Substitute Parts

Part Overview

The TSKS5400-FSZ is an infrared (IR) emitter manufactured by Vishay Semiconductor Opto Division, designed for applications requiring 950nm wavelength emission at 100mA forward current. This component features a radial through-hole package with a 60° viewing angle and operates across the temperature range of -25°C to 85°C. The product is currently obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

TSKS5400-FSZ

Vishay Semiconductor Opto DivisionIn Stock: 721TSKS5400-FSZ Datasheet

Current PartRFQ

QEE113

onsemiIn Stock: 569761QEE113 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSKS5400-FSZ is determined by the following critical parameters:

• Wavelength compatibility: IR emitters operating in the near-infrared spectrum (940nm–950nm range) are functionally equivalent for most receiver applications
• Package type: Radial through-hole configuration required for mechanical and electrical compatibility
• Mounting orientation: Side view orientation maintains circuit board layout compatibility
• Forward current rating: Maximum DC forward current must support the application's operational requirements
• Radiant intensity: Output power characteristics must meet system detection sensitivity thresholds
• Operating temperature range: Must encompass or exceed the application's thermal operating envelope
• Compliance certifications: RoHS3 compliance and REACH status ensure regulatory alignment

The QEE113 from onsemi meets these substitution criteria through equivalent package geometry, compatible wavelength specification, and maintained compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The QEE113 is an active product with current manufacturing support and full inventory availability, addressing the obsolescence status of the TSKS5400-FSZ. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity.

Key considerations for selection:

• The QEE113 operates at a reduced maximum forward current (50mA versus 100mA), requiring circuit design verification to confirm compatibility with existing current-limiting configurations
• Wavelength difference (940nm versus 950nm) falls within the near-infrared spectrum and is compatible with standard IR receiver photodiodes
• The QEE113 provides an extended operating temperature range (-40°C to 100°C), offering broader thermal coverage than the original component
• Viewing angle reduction (50° versus 60°) may impact optical system design; applications requiring wide-angle emission should be evaluated

Frequently Asked Questions (FAQ)

Q: Can the QEE113 directly replace the TSKS5400-FSZ in existing designs?

A: Direct mechanical and electrical substitution is possible due to matching radial through-hole package geometry and side-view orientation. However, the reduced maximum forward current (50mA) requires verification that circuit designs do not exceed this rating. Wavelength compatibility (940nm versus 950nm) is suitable for standard IR receiver applications.

Q: What is the impact of the 10nm wavelength difference?

A: The 10nm difference (950nm to 940nm) represents a minor shift within the near-infrared spectrum. Standard IR receiver photodiodes are designed to detect across this range. System performance should be validated through testing if the original design relied on specific wavelength-dependent characteristics.

Q: Does the QEE113 support the same forward current as the TSKS5400-FSZ?

A: No. The QEE113 has a maximum DC forward current of 50mA, compared to 100mA for the TSKS5400-FSZ. Applications operating at currents above 50mA require circuit redesign or alternative component selection.

Q: Are both components RoHS compliant?

A: Yes. Both the TSKS5400-FSZ and QEE113 are ROHS3 compliant and REACH unaffected, maintaining regulatory alignment for industrial and consumer applications.

Q: What is the significance of the extended temperature range in the QEE113?

A: The QEE113 operates from -40°C to 100°C, compared to -25°C to 85°C for the TSKS5400-FSZ. This extended range provides additional thermal margin for applications operating in extreme environments or with elevated ambient temperatures.

Q: How does the viewing angle difference affect system design?

A: The QEE113 has a 50° viewing angle versus 60° for the TSKS5400-FSZ. Applications requiring wide-angle emission coverage should evaluate whether the reduced angle impacts optical system performance or receiver placement constraints.