OHS3175U Equivalent & Substitute Parts

Part Overview

The OHS3175U is a digital switch latch Hall Effect magnetic sensor manufactured by TT Electronics/Optek Technology in TO-92-3 package configuration. This active product operates as an open collector output device with latch functionality, designed for magnetic field detection applications across industrial and consumer electronics. The part is ROHS3 compliant and maintains unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameter ranges for Hall Effect latch sensors with open collector output topology.

Substiute Parts

OHS3175U

TT Electronics/Optek TechnologyIn Stock: 1839OHS3175U Datasheet

Current PartRFQ

AH175-PG-A-A

Diodes IncorporatedIn Stock: 191874AH175-PG-A-A Datasheet

MFR RecommendedRFQ

AH175-PG-B-A

Diodes IncorporatedIn Stock: 33365AH175-PG-B-A Datasheet

MFR RecommendedRFQ

AH175-PG-B-B

Diodes IncorporatedIn Stock: 6455AH175-PG-B-B Datasheet

MFR RecommendedRFQ

AH1751-PG-A-A

Diodes IncorporatedIn Stock: 4757AH1751-PG-A-A Datasheet

MFR RecommendedRFQ

AH1751-PG-B-A

Diodes IncorporatedIn Stock: 158320AH1751-PG-B-A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for Hall Effect latch magnetic sensors is determined by the following criteria:

Core Functional Requirements:

• Function: Latch topology
• Technology: Hall Effect
• Output Type: Open Collector
• Polarization: South Pole

Electrical Compatibility Parameters:

• Voltage Supply range must accommodate OHS3175U operating range (4.5V ~ 24V)
• Current Output (Max) must meet or exceed 25mA requirement
• Operating Temperature range must cover -40°C ~ 125°C minimum

Mechanical Compatibility:

• Mounting Type: Through Hole
• Package form factor: 3-pin configuration (TO-92-3 or 3-SIP equivalent)

Regulatory Compliance:

• RoHS3 Compliant status required
• REACH Unaffected status required

Substitute parts identified: AH175-PG-A-A, AH175-PG-B-A, AH175-PG-B-B, AH1751-PG-A-A, AH1751-PG-B-A

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and ROHS3 compliance with REACH unaffected designation, meeting regulatory requirements equivalent to OHS3175U.

AH175 Series (AH175-PG-A-A, AH175-PG-B-A, AH175-PG-B-B): These parts provide 25mA maximum output current matching OHS3175U specification. Operating temperature range extends to 150°C, exceeding the -40°C ~ 125°C requirement. Voltage supply range 4.6V ~ 20V is compatible with OHS3175U applications operating within 4.5V ~ 24V envelope. Sensing range values (6mT to 8mT) differ from OHS3175U (26mT), requiring application-level assessment of magnetic field detection thresholds.

AH1751 Series (AH1751-PG-A-A, AH1751-PG-B-A): These parts provide 100mA maximum output current, exceeding OHS3175U 25mA specification. Operating temperature range matches OHS3175U at -40°C ~ 125°C. Voltage supply range 4.6V ~ 20V is compatible within the 4.5V ~ 24V operating envelope. Sensing range 7mT differs from OHS3175U 26mT specification.

All substitute parts are manufactured by Diodes Incorporated with 3-SIP package configuration, functionally equivalent to TO-92-3 through-hole mounting topology.

Frequently Asked Questions (FAQ)

Q: Can AH175-PG-A-A directly replace OHS3175U in existing designs?

A: Functional substitution is possible when application magnetic field detection thresholds are compatible with 6mT sensing range. The 3-SIP package is mechanically compatible with TO-92-3 through-hole mounting. Voltage supply range 4.6V ~ 20V accommodates OHS3175U applications operating at 4.5V minimum. Output current capability (25mA) matches OHS3175U specification.

Q: What is the primary difference between AH175 and AH1751 series?

A: Maximum output current differs: AH175 series provides 25mA, while AH1751 series provides 100mA. Both maintain open collector latch topology with Hall Effect technology and South Pole polarization. AH1751 series operating temperature range (-40°C ~ 125°C) matches OHS3175U, while AH175 series extends to 150°C.

Q: Are sensing range differences between OHS3175U (26mT) and substitute parts (6mT to 8mT) significant?

A: Sensing range specification determines magnetic field detection threshold. OHS3175U operates at 26mT trip and -26mT release. Substitute parts operate at lower thresholds (6mT to 8mT). Application compatibility depends on magnetic field strength in the target circuit. Lower sensing range values indicate higher sensitivity to magnetic fields.

Q: Do all substitute parts meet the same regulatory compliance as OHS3175U?

A: Yes. All identified substitute parts maintain ROHS3 compliance and REACH unaffected status, matching OHS3175U regulatory designation. Moisture sensitivity level remains 1 (Unlimited) across all parts.

Q: Is package form factor interchangeable between TO-92-3 and 3-SIP?

A: Both TO-92-3 and 3-SIP are three-pin through-hole configurations with compatible mechanical mounting characteristics. Pin spacing and lead geometry are equivalent for PCB mounting applications.