HAL501 SF-K Equivalent & Substitute Parts

Part Overview

The HAL501 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 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 design support and production continuity.

Substiute Parts

HAL501 SF-K

TDK-Micronas GmbHIn Stock: 892HAL501 SF-K Datasheet

Current PartRFQ

HAL1501SU-A

TDK-Micronas GmbHIn Stock: 122714HAL1501SU-A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The HAL1501SU-A qualifies as a manufacturer-recommended substitute for the HAL501 SF-K based on the following critical parameters:

Functional Compatibility:

• Both components utilize Hall Effect technology for magnetic sensing
• Both feature open drain output configuration
• Both are manufactured by TDK-Micronas GmbH, ensuring design continuity and technical support alignment

Electrical Compatibility:

• Supply voltage range: HAL501 SF-K operates at 3.8V ~ 24V; HAL1501SU-A operates at 2.7V ~ 24V (broader lower voltage support)
• Output type: Both employ open drain architecture
• Maximum output current: HAL501 SF-K rated at 20mA; HAL1501SU-A specifications not provided but maintains open drain topology

Thermal Compatibility:

• HAL501 SF-K: -40°C ~ 140°C operating range
• HAL1501SU-A: -40°C ~ 170°C operating range (extended upper temperature capability)

Mechanical Compatibility:

• Both are surface mount devices
• Package transition: HAL501 SF-K uses SOT-89B-1 (TO-243AA variant); HAL1501SU-A uses SOT-23-3 (TO-236-3/SC-59)

Parameter Comparison

Engineering Selection Recommendations

The HAL1501SU-A is the manufacturer-recommended substitute for the obsolete HAL501 SF-K. Selection of this alternative is justified by the following factors:

Product Status: The HAL501 SF-K is obsolete, whereas the HAL1501SU-A maintains active production status with substantial inventory availability (122,682 pcs), ensuring long-term supply chain reliability.

Compliance & Qualification: The HAL1501SU-A carries automotive-grade qualification (AEC-Q100) and ROHS3 compliance, providing enhanced reliability documentation and regulatory alignment for applications requiring these certifications.

Electrical Performance: The HAL1501SU-A supports an extended lower supply voltage threshold (2.7V versus 3.8V), offering greater design flexibility for low-voltage applications while maintaining the full 24V upper limit.

Thermal Performance: The extended operating temperature range of the HAL1501SU-A (-40°C to 170°C versus -40°C to 140°C) provides additional margin for high-temperature environments.

Package Consideration: The transition from SOT-89B-1 to SOT-23-3 requires PCB layout modification. The SOT-23-3 package is a smaller, industry-standard form factor with widespread design tool support and manufacturing familiarity.

Frequently Asked Questions (FAQ)

Q: Can the HAL1501SU-A directly replace the HAL501 SF-K without PCB modifications?

A: No. The HAL501 SF-K uses the SOT-89B-1 package (TO-243AA variant), while the HAL1501SU-A uses the SOT-23-3 package (TO-236-3/SC-59). PCB footprint redesign is required. Pin configuration must be verified against manufacturer datasheets to ensure correct signal routing.

Q: What are the key electrical differences between these components?

A: Both components operate as open drain Hall Effect sensors with overlapping supply voltage ranges. The HAL1501SU-A supports lower minimum supply voltage (2.7V versus 3.8V). Supply current and output current specifications are provided for the HAL501 SF-K but not specified for the HAL1501SU-A; manufacturer datasheets should be consulted for detailed electrical characterization.

Q: Is the HAL1501SU-A suitable for automotive applications?

A: Yes. The HAL1501SU-A carries automotive-grade designation and AEC-Q100 qualification, making it appropriate for automotive sensor applications. The HAL501 SF-K does not specify automotive qualification.

Q: What is the impact of the extended temperature range in the HAL1501SU-A?

A: The HAL1501SU-A operates to 170°C junction temperature, compared to 140°C for the HAL501 SF-K. This provides 30°C additional thermal margin, beneficial for applications in high-temperature environments or with limited thermal management.

Q: Are there any supply chain advantages to using the HAL1501SU-A?

A: Yes. The HAL1501SU-A is in active production with 122,682 pcs available in tape and reel packaging, whereas the HAL501 SF-K is obsolete. The HAL1501SU-A ensures long-term availability and production continuity.

Q: Does the HAL1501SU-A require different pull-up resistor values for the open drain output?

A: Output current specifications are not provided for the HAL1501SU-A. Consult the manufacturer datasheet to confirm pull-up resistor sizing and output drive characteristics relative to the HAL501 SF-K design.