HAL102TQ-C Equivalent & Substitute Parts

Part Overview

The HAL102TQ-C is a digital switch latch Hall Effect magnetic sensor manufactured by TDK-Micronas GmbH, designed for magnetic field detection applications requiring open drain output configuration. This component operates as a latching switch, responding to magnetic field transitions with South Pole polarization sensitivity. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and component procurement.

Substiute Parts

HAL102TQ-C

TDK-Micronas GmbHIn Stock: 1121HAL102TQ-C Datasheet

Current PartRFQ

HAL1502SU-A

TDK-Micronas GmbHIn Stock: 75123HAL1502SU-A Datasheet

MFR RecommendedRFQ

SS561AT

Honeywell Sensing and Productivity SolutionsIn Stock: 3054SS561AT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HAL102TQ-C are identified based on the following critical parameters that determine functional equivalence:

Core Functional Parameters:

• Technology: Hall Effect digital switch latch
• Function: Latching switch operation
• Output Type: Open Drain or Open Collector (functionally compatible for switching applications)
• Mounting Type: Surface Mount
• Magnetic Sensing Capability: Latch function with trip and release thresholds

Electrical Compatibility Parameters:

• Supply Voltage Range: Must overlap with or encompass 3.8V ~ 24V
• Output Current Capacity: Minimum 50mA
• Operating Temperature: Must support application requirements

Physical Compatibility Parameters:

• Package Type: SOT-89B or SOT-23 surface mount packages
• Polarization: South Pole or dual-pole capable sensors

The HAL1502SU-A and SS561AT meet these substitution criteria through equivalent Hall Effect latch functionality, compatible output drive capability, and surface mount packaging, despite variations in sensing thresholds and temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

HAL1502SU-A Selection Criteria: The HAL1502SU-A is an active product from the same manufacturer (TDK-Micronas GmbH) with ROHS3 compliance. This substitute maintains open drain output configuration and Hall Effect latch functionality. The lower sensing threshold (2.5mT vs. 6mT) requires circuit-level evaluation for magnetic field strength compatibility. The reduced operating temperature range (-40°C ~ 70°C) may limit use in high-temperature applications. Automotive qualification (AEC-Q100) provides additional reliability assurance for demanding environments. Package transition from SOT-89B-3 to SOT-23-3 requires PCB layout modification.

SS561AT Selection Criteria: The SS561AT is an active product from Honeywell with equivalent SOT-89B packaging, minimizing physical redesign requirements. Open collector output provides functional compatibility with open drain applications in most switching circuits. Higher sensing threshold (8.5mT) and extended operating temperature range (-40°C ~ 150°C) support broader application scenarios. Supply voltage range extends to 30V, accommodating higher voltage systems. RoHS compliance and temperature compensation features align with industrial requirements.

Product Status Consideration: Both substitute parts maintain active product status, ensuring long-term availability and supply chain stability compared to the obsolete HAL102TQ-C.

Frequently Asked Questions (FAQ)

Q: Can HAL1502SU-A directly replace HAL102TQ-C without circuit modifications? A: HAL1502SU-A provides functional equivalence in latch operation and open drain output. However, the lower magnetic sensing threshold (2.5mT vs. 6mT) requires verification that your magnetic field strength remains within the new operating range. PCB layout changes are necessary due to package transition from SOT-89B-3 to SOT-23-3.

Q: What is the difference between open drain and open collector outputs? A: Both output types function as switches that pull the output line to ground when activated. Open drain uses a MOSFET pull-down transistor, while open collector uses a bipolar transistor. For most switching applications, they are functionally interchangeable when properly terminated with pull-up resistors.

Q: Why does SS561AT have a higher sensing threshold (8.5mT) than HAL102TQ-C (6mT)? A: Sensing threshold variation is a design characteristic of different Hall Effect sensor architectures. SS561AT's higher threshold may require stronger magnetic fields for activation. Application-specific magnetic field strength must be verified during substitution evaluation.

Q: Is the temperature range difference between HAL1502SU-A and SS561AT significant? A: HAL1502SU-A operates -40°C ~ 70°C, while SS561AT operates -40°C ~ 150°C. Selection depends on your application's thermal environment. High-temperature applications (above 70°C) require SS561AT. Standard industrial applications typically operate within HAL1502SU-A's range.

Q: Does package change from SOT-89B-3 to SOT-23-3 affect electrical performance? A: Package change is physical only. SOT-23-3 and SOT-89B-3 are both three-pin surface mount packages with identical pin functions. PCB footprint and layout must be updated, but electrical performance characteristics remain determined by the semiconductor die and internal circuitry.

Q: Are both substitute parts RoHS compliant? A: Yes. HAL1502SU-A is ROHS3 compliant, and SS561AT is RoHS compliant. Both meet current environmental regulations for electronic component manufacturing and use.

Q: Which substitute part should I select for new designs? A: Selection depends on specific application requirements: choose HAL1502SU-A for lower magnetic field sensitivity applications with automotive qualification needs, or SS561AT for extended temperature range and packaging compatibility with the original SOT-89B form factor.