HAL508 SF-K Equivalent & Substitute Parts

Part Overview

The HAL508 SF-K is a digital switch Hall Effect magnetic sensor manufactured by TDK-Micronas GmbH, designed for surface mount applications in the SOT-89B-1 package. This component operates as an open drain output device with temperature compensation across a wide supply voltage range of 3.8V to 24V and an operating temperature range of -40°C to 140°C. The product is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

HAL508 SF-K

TDK-Micronas GmbHIn Stock: 1033HAL508 SF-K Datasheet

Current PartRFQ

HAL1506SU-A

TDK-Micronas GmbHIn Stock: 2058HAL1506SU-A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HAL508 SF-K is based on the following critical parameters that must align between the main part and substitute components:

• Technology: Hall Effect magnetic sensing technology
• Output Configuration: Open drain output topology
• Supply Voltage Range: Compatibility within 3.8V to 24V operating window
• Operating Temperature Range: Functional performance across -40°C to 140°C
• Mounting Type: Surface mount configuration
• Current Ratings: Output current capability of 20mA maximum

The HAL1506SU-A qualifies as a manufacturer-recommended substitute based on these core electrical and mechanical parameters. While package geometry differs (SOT-23-3 versus SOT-89B-1), both components maintain Hall Effect technology with open drain output and compatible voltage supply specifications.

Parameter Comparison

Engineering Selection Recommendations

The HAL1506SU-A is the manufacturer-recommended substitute for the obsolete HAL508 SF-K. Both components are manufactured by TDK-Micronas GmbH and share core Hall Effect technology with open drain output configuration.

Compliance Status: The HAL1506SU-A carries active product status with ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), providing long-term supply chain stability and regulatory alignment.

Temperature Consideration: The HAL1506SU-A operates across -40°C to 70°C, which is narrower than the HAL508 SF-K range of -40°C to 140°C. Applications requiring operation above 70°C junction temperature require thermal analysis to confirm suitability.

Package Transition: The shift from SOT-89B-1 to SOT-23-3 packaging requires PCB layout modification. Both are surface mount configurations with different footprint geometries and pin assignments.

Supply Voltage: The HAL1506SU-A extends lower voltage operation to 2.7V, providing additional flexibility in low-power applications while maintaining the 24V upper limit.

Frequently Asked Questions (FAQ)

Q: Can the HAL1506SU-A directly replace the HAL508 SF-K without PCB modification?

A: No. While both components share Hall Effect technology and open drain output, the package types differ (SOT-89B-1 versus SOT-23-3). PCB layout and footprint redesign is required. Pin configuration must be verified against manufacturer datasheets before implementation.

Q: What is the primary limitation of the HAL1506SU-A as a substitute?

A: The maximum operating junction temperature of 70°C is lower than the HAL508 SF-K specification of 140°C. Applications operating in high-temperature environments must confirm thermal performance through analysis or testing.

Q: Are both parts certified for the same regulatory standards?

A: The HAL1506SU-A carries ROHS3 compliance certification. Regulatory alignment should be confirmed against your specific application requirements and regional standards.

Q: What is the functional difference between these Hall Effect sensors?

A: The HAL1506SU-A is specified as a unipolar switch with defined sensing range (18.9mT trip, 17.3mT release). The HAL508 SF-K is a digital switch with temperature compensation. Both operate as open drain outputs with Hall Effect technology.

Q: Is the HAL1506SU-A available in the same packaging options?

A: No. The HAL1506SU-A is supplied in Tape & Reel (TR) packaging in SOT-23-3 configuration. The original HAL508 SF-K used SOT-89B-1 packaging. Packaging format and footprint differences require design modification.