AH3764Q-P-B Equivalent & Substitute Parts

Part Overview

The AH3764Q-P-B is a digital switch latch Hall Effect magnetic sensor manufactured by Diodes Incorporated, designed for automotive-grade applications requiring reliable magnetic field detection. This component features open drain output, temperature compensation, and operates across an extended temperature range of -40°C to 150°C. The part is classified as Last Time Buy, indicating end-of-life status and necessitating identification of active alternative components for ongoing design requirements and production continuity.

Substiute Parts

AH3764Q-P-B

Diodes IncorporatedIn Stock: 5433AH3764Q-P-B Datasheet

Current PartRFQ

AH3724Q-P-B

Diodes IncorporatedIn Stock: 707AH3724Q-P-B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The AH3724Q-P-B qualifies as a functional substitute based on the following substitution criteria:

Common Electrical Parameters:

• Hall Effect technology with temperature compensation
• Through hole 3-SIP package configuration
• Supply current maximum of 4mA
• Operating temperature range of -40°C to 150°C
• ROHS3 compliance and REACH unaffected status

Functional Differences Requiring Evaluation:

• Polarization: AH3724Q-P-B supports North Pole and South Pole (bipolar), whereas AH3764Q-P-B is South Pole only
• Sensing Range: AH3724Q-P-B operates at ±6mT Trip with ±0.5mT Release; AH3764Q-P-B operates at 6mT Trip with -6mT Release
• Output Type: AH3724Q-P-B provides digital output; AH3764Q-P-B provides open drain output
• Supply Voltage: AH3724Q-P-B range is 2.2V ~ 20V; AH3764Q-P-B range is 3V ~ 28V
• Output Current: AH3724Q-P-B maximum is 25mA; AH3764Q-P-B maximum is 60mA

Parameter Comparison

Engineering Selection Recommendations

The AH3724Q-P-B is available as an active product from Diodes Incorporated, providing supply continuity for applications transitioning from the AH3764Q-P-B Last Time Buy status. Both components share identical supply current specifications, operating temperature range, and 3-SIP through-hole packaging.

Circuit design modifications are required for substitution due to output type differences. The AH3764Q-P-B provides open drain output suitable for direct pull-up configurations, while the AH3724Q-P-B provides digital output requiring interface circuit adaptation. Additionally, the reduced maximum output current of the AH3724Q-P-B (25mA versus 60mA) must be verified against load requirements.

Supply voltage range differences must be evaluated. Applications operating above 20V require retention of the AH3764Q-P-B or alternative components supporting the extended voltage range. The AH3724Q-P-B supports lower minimum voltage (2.2V) compared to the AH3764Q-P-B (3V), enabling operation in lower-voltage systems.

Polarization flexibility of the AH3724Q-P-B (North Pole and South Pole) accommodates bidirectional magnetic field detection, whereas the AH3764Q-P-B is limited to South Pole detection. Applications requiring unidirectional sensing must confirm compatibility with the bipolar sensing capability.

Frequently Asked Questions (FAQ)

Q: Can the AH3724Q-P-B directly replace the AH3764Q-P-B without circuit modifications?

A: No. The output type differs (digital versus open drain), requiring circuit interface changes. Additionally, the maximum output current is reduced from 60mA to 25mA, necessitating load verification.

Q: What is the primary reason for identifying substitute parts for the AH3764Q-P-B?

A: The AH3764Q-P-B is classified as Last Time Buy, indicating end-of-life status. The AH3724Q-P-B is an active product providing long-term supply availability.

Q: Are both parts qualified for automotive applications?

A: The AH3764Q-P-B carries AEC-Q100 automotive qualification. The AH3724Q-P-B automotive qualification status is not specified in available documentation.

Q: What are the key electrical differences affecting substitution?

A: Supply voltage range (AH3764Q-P-B: 3V ~ 28V; AH3724Q-P-B: 2.2V ~ 20V), output current maximum (AH3764Q-P-B: 60mA; AH3724Q-P-B: 25mA), and output type (open drain versus digital).

Q: Do both components support the same temperature operating range?

A: Yes. Both components operate from -40°C to 150°C with temperature compensation.

Q: Is the 3-SIP package identical between both parts?

A: Both components use through-hole 3-SIP packaging. Physical compatibility is maintained, but circuit interface modifications are required due to output type differences.

Q: What is the difference between unipolar and bipolar sensing in these Hall Effect sensors?

A: The AH3764Q-P-B detects South Pole magnetic fields only (unipolar). The AH3724Q-P-B detects both North Pole and South Pole fields (bipolar), providing bidirectional sensing capability.