TSOP1733 Equivalent & Substitute Parts

Part Overview

The TSOP1733 is a remote receiver sensor manufactured by Vishay Semiconductor Opto Division, designed for infrared signal reception at 33.0kHz center frequency with a 35-meter sensing distance. This surface mount optical sensor operates within a 4.5V to 5.5V supply range and is classified as obsolete. Due to its obsolete product status, identifying functionally compatible substitute components is essential for ongoing system maintenance, redesign efforts, and procurement continuity.

Substiute Parts

TSOP1733

Vishay Semiconductor Opto DivisionIn Stock: 787TSOP1733 Datasheet

Current PartRFQ

TSOP31233

Vishay Semiconductor Opto DivisionIn Stock: 1350TSOP31233 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSOP1733 is determined by the following critical parameters:

• B.P.F. Center Frequency: Must match 33.0kHz for signal compatibility with existing infrared transmission protocols
• Sensing Distance: Minimum 35m required to maintain or exceed original detection range
• Voltage Supply Range: Must accommodate the 4.5V to 5.5V operating window
• Operating Temperature Range: Must cover -25°C to 85°C minimum
• RoHS and Compliance Status: Must maintain ROHS3 compliance and REACH unaffected status

The TSOP31233 qualifies as a manufacturer-recommended substitute based on these parameters. While it features a different mounting type (through hole versus surface mount) and improved specifications in certain areas, the core functional parameters align with substitution requirements.

Parameter Comparison

Engineering Selection Recommendations

The TSOP31233 is the manufacturer-recommended substitute for the obsolete TSOP1733. Both components maintain identical B.P.F. center frequency (33.0kHz) and operating temperature range (-25°C to 85°C), ensuring functional compatibility in infrared receiver applications.

The TSOP31233 offers enhanced specifications: extended sensing distance (45m versus 35m), reduced supply current (350µA versus 600µA), and expanded voltage supply range (2.5V to 5.5V versus 4.5V to 5.5V). Both components maintain ROHS3 compliance and REACH unaffected status.

The primary design consideration is the mounting type transition from surface mount (TSOP1733) to through hole (TSOP31233), which requires PCB layout modification. This substitution is appropriate for new designs, redesigns, or maintenance applications where the through-hole mounting configuration is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the TSOP31233 directly replace the TSOP1733 without circuit modifications?

A: The TSOP31233 maintains identical B.P.F. center frequency and operating temperature range. However, the mounting type differs (through hole versus surface mount), requiring PCB layout changes. Electrical compatibility is confirmed within the specified voltage and current parameters.

Q: What is the impact of the different voltage supply ranges?

A: The TSOP1733 requires 4.5V to 5.5V, while the TSOP31233 operates from 2.5V to 5.5V. The TSOP31233 provides broader voltage compatibility. Existing designs operating at 4.5V to 5.5V remain fully compatible with the substitute.

Q: Does the increased sensing distance (45m versus 35m) affect circuit design?

A: The extended sensing distance of the TSOP31233 does not require circuit modifications. The component maintains the same frequency response and operating characteristics. The increased range represents an improvement in detection capability.

Q: Are there supply chain advantages to using the TSOP31233?

A: The TSOP31233 is classified as active product status with documented inventory availability, whereas the TSOP1733 is obsolete. The substitute provides long-term procurement reliability and supply continuity.

Q: What compliance certifications apply to both components?

A: Both the TSOP1733 and TSOP31233 maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for industrial and consumer applications.