AH1803-WG-7 Equivalent & Substitute Parts

Part Overview

The AH1803-WG-7 is an omnipolar Hall Effect magnetic switch manufactured by Diodes Incorporated, housed in an SC-59-3 (SOT-23-3) surface mount package. This digital switch detects both north and south magnetic poles with a push-pull output configuration. The part is active in production status with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameters for this magnetic sensor category.

Substiute Parts

AH1803-WG-7

Diodes IncorporatedIn Stock: 69490AH1803-WG-7 Datasheet

Current PartRFQ

TLE4906KHTSA1

Infineon TechnologiesIn Stock: 9270TLE4906KHTSA1 Datasheet

MFR RecommendedRFQ

TLI4906KHTSA1

Infineon TechnologiesIn Stock: 6158TLI4906KHTSA1 Datasheet

MFR RecommendedRFQ

TLV4906KFTSA1

Infineon TechnologiesIn Stock: 16044TLV4906KFTSA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AH1803-WG-7 is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the SC-59-3 (SOT-23-3) surface mount package to ensure mechanical and thermal compatibility with existing PCB layouts.

Technology & Detection: Hall Effect technology is required. The AH1803-WG-7 detects both north and south magnetic poles (omnipolar). Substitute parts identified are unipolar switches (south pole detection only), which represent a functional change in detection capability.

Output Configuration: The AH1803-WG-7 uses push-pull output. Substitute parts use open collector or open drain outputs, which are functionally different output stages.

Electrical Operating Range: Supply voltage range, maximum supply current, and maximum output current must be evaluated for circuit compatibility.

Temperature Rating: Operating temperature range must support the application environment.

Compliance & Certification: RoHS3 compliance and automotive qualification (AEC-Q100) are provided parameters for selection criteria.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts are active in production status and ROHS3 compliant, meeting baseline compliance requirements. The Infineon Technologies substitutes (TLE4906KHTSA1, TLI4906KHTSA1, TLV4906KFTSA1) carry automotive grade designation with AEC-Q100 qualification, providing additional qualification documentation for automotive applications.

TLE4906KHTSA1 supports the widest operating temperature range (-40°C to 150°C junction temperature) and is available in cut tape and Digi-Reel packaging.

TLI4906KHTSA1 operates to -40°C to 125°C and is supplied in tape and reel packaging.

TLV4906KFTSA1 operates to -40°C to 85°C, matching the AH1803-WG-7 temperature range, and is supplied in tape and reel packaging with the highest inventory availability (16,016 pieces).

Selection between these substitutes depends on application-specific temperature requirements and packaging logistics. All three substitutes share identical electrical specifications (2.7V to 18V supply, 6mA maximum supply current, 20mA maximum output current) and identical sensing range parameters (13.9mT trip, 4.7mT release at 25°C test condition).

Frequently Asked Questions (FAQ)

Q: Can the AH1803-WG-7 be directly replaced with TLE4906KHTSA1, TLI4906KHTSA1, or TLV4906KFTSA1?

A: Direct replacement requires circuit design evaluation. While all parts share the SC-59-3 package and Hall Effect technology, the AH1803-WG-7 is an omnipolar switch (detects north and south poles) with push-pull output, whereas the Infineon substitutes are unipolar switches (south pole detection only) with open collector or open drain outputs. Output stage differences require pull-up resistor configuration changes in the receiving circuit.

Q: What is the difference between push-pull, open collector, and open drain outputs?

A: Push-pull output (AH1803-WG-7) actively drives both high and low logic states. Open collector (TLE4906KHTSA1) and open drain (TLI4906KHTSA1, TLV4906KFTSA1) outputs require external pull-up resistors to establish high logic levels and can only actively pull to ground. Circuit redesign may be necessary to accommodate this output stage difference.

Q: Are the substitute parts automotive qualified?

A: Yes. TLE4906KHTSA1, TLI4906KHTSA1, and TLV4906KFTSA1 all carry automotive grade designation with AEC-Q100 qualification. The AH1803-WG-7 does not specify automotive qualification in the provided parameters.

Q: What is the difference in sensing range between the main part and substitutes?

A: The AH1803-WG-7 has a sensing range of ±4mT trip and ±1mT release. The Infineon substitutes have a sensing range of 13.9mT trip and 4.7mT release (unipolar, south pole only). These are significantly different detection thresholds and must be evaluated for application compatibility.

Q: Which substitute part should be selected for maximum temperature operation?

A: TLE4906KHTSA1 supports the highest operating temperature range (-40°C to 150°C junction temperature). TLV4906KFTSA1 matches the AH1803-WG-7 operating range (-40°C to 85°C ambient temperature).

Q: Are all parts RoHS3 compliant?

A: Yes. The AH1803-WG-7 and all three substitute parts (TLE4906KHTSA1, TLI4906KHTSA1, TLV4906KFTSA1) are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).