HTB 75-TP Current Sensor Hall Effect Equivalent & Substitute Parts

Part Overview

The HTB 75-TP is a Hall Effect current sensor manufactured by LEM USA Inc., designed for AC/DC current measurement applications with a 75A sensing capacity. This open-loop, bidirectional module features a single pass-through configuration and ratiometric voltage output. The product is currently classified as obsolete, necessitating identification of equivalent substitute components for ongoing system support and new design implementations. The HTB series provides reliable current sensing across industrial and commercial applications requiring precise AC/DC measurement capabilities.

Substiute Parts

HTB 75-TP

LEM USA Inc.In Stock: 812HTB 75-TP Datasheet

Current PartRFQ

HTB 50-TP

LEM USA Inc.In Stock: 1119HTB 50-TP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute identification for the HTB 75-TP is based on strict parametric compatibility within the HTB series. The primary substitute, HTB 50-TP, shares the following critical parameters with the main part:

Common Parameters Enabling Substitution:

• Manufacturer: LEM USA Inc.
• Sensor Technology: Hall Effect, Open Loop
• Measurement Capability: AC/DC
• Number of Channels: 1
• Output Configuration: Ratiometric, Voltage
• Frequency Response: DC ~ 50kHz
• Linearity: ±1%
• Accuracy: ±1%
• Supply Voltage: ±12V ~ 15V
• Response Time: 3µs
• Maximum Supply Current: 15mA
• Operating Temperature Range: -40°C ~ 80°C
• Polarization: Bidirectional
• Mounting Type: Through Hole
• Package Type: Module, Single Pass Through

Differentiating Parameter:

• Current Sensing Range: HTB 75-TP = 75A; HTB 50-TP = 50A

The HTB 50-TP functions as a parametric equivalent with reduced current sensing capacity. Substitution is valid only when system current requirements do not exceed 50A.

Parameter Comparison

Engineering Selection Recommendations

HTB 50-TP Substitution Criteria:

The HTB 50-TP is suitable as a substitute for the HTB 75-TP when the following conditions are met:

1. Current Measurement Requirement: System design specifies maximum continuous current measurement not exceeding 50A. The HTB 50-TP provides full measurement accuracy and linearity within this range.

2. Product Status Advantage: The HTB 50-TP maintains active product status with LEM USA Inc., ensuring ongoing availability, technical support, and supply chain continuity compared to the obsolete HTB 75-TP.

3. Electrical Interface Compatibility: Both components operate with identical supply voltage (±12V ~ 15V), output configuration (ratiometric voltage), and response characteristics (3µs), enabling direct functional replacement in circuit designs.

4. Environmental and Compliance Alignment: Both parts share identical operating temperature ranges (-40°C ~ 80°C), REACH compliance status, and ECCN classification (EAR99), maintaining regulatory and environmental compliance requirements.

5. Mechanical Integration: Identical through-hole mounting type and module package configuration allow direct physical substitution without PCB redesign or mechanical rework.

Limitation: The HTB 50-TP cannot substitute the HTB 75-TP in applications requiring current measurement or sensing above 50A. In such cases, alternative higher-capacity Hall Effect sensors from LEM USA Inc. or other manufacturers must be evaluated.

Frequently Asked Questions (FAQ)

Q1: Can the HTB 50-TP directly replace the HTB 75-TP in all applications?

A: No. The HTB 50-TP is a valid substitute only when the application's maximum current measurement requirement does not exceed 50A. If your system measures currents above 50A, the HTB 50-TP will not provide accurate readings and cannot be used as a substitute.

Q2: What is the primary difference between HTB 75-TP and HTB 50-TP?

A: The sole differentiating parameter is current sensing capacity. The HTB 75-TP measures up to 75A, while the HTB 50-TP measures up to 50A. All other electrical, mechanical, and performance specifications are identical.

Q3: Why is the HTB 75-TP classified as obsolete?

A: Product obsolescence is determined by the manufacturer. The HTB 75-TP has reached end-of-life status with LEM USA Inc. The HTB 50-TP remains in active production and is the recommended alternative for new designs and legacy system support.

Q4: Are there any PCB or circuit modifications required to use HTB 50-TP instead of HTB 75-TP?

A: No circuit modifications are required. Both components share identical electrical interfaces, supply voltage requirements, output characteristics, and through-hole mounting specifications. Physical substitution is direct.

Q5: Does the HTB 50-TP provide the same measurement accuracy as the HTB 75-TP?

A: Yes. Both components specify ±1% linearity and ±1% accuracy. Measurement accuracy is maintained within the HTB 50-TP's 50A operating range.

Q6: What is the response time for the HTB 50-TP?

A: The HTB 50-TP response time is 3µs, identical to the HTB 75-TP. This enables equivalent performance in high-speed current measurement applications up to 50kHz frequency.

Q7: Can the HTB 50-TP operate in the same temperature range as the HTB 75-TP?

A: Yes. Both components operate across -40°C to 80°C, providing identical thermal performance and environmental compatibility.

Q8: Is the HTB 50-TP RoHS compliant?

A: Yes. The HTB 50-TP is RoHS compliant. The HTB 75-TP RoHS status was not specified in available documentation.

Q9: What supply voltage is required for the HTB 50-TP?

A: The HTB 50-TP requires ±12V to ±15V dual supply voltage, identical to the HTB 75-TP. Maximum supply current is 15mA.

Q10: Are there inventory considerations when selecting the HTB 50-TP as a substitute?

A: Yes. The HTB 50-TP has 1050 pieces in new original stock, while the HTB 75-TP has 718 pieces available. The HTB 50-TP's active status and higher inventory level provide superior supply chain reliability for ongoing production and support requirements.