ADH025-00 Equivalent & Substitute Parts

Part Overview

The ADH025-00 is a digital omnipolar magnetic switch manufactured by NVE Corp/Sensor Products, utilizing Hall Effect technology for magnetic field detection. This component operates as an open collector switch, responding to both north and south pole magnetic fields within a defined sensing range. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Part Number	ADH025-00
Manufacturer	NVE Corp/Sensor Products
Category	Magnetic Sensors
Function	Omnipolar Switch
Technology	Hall Effect
Sensing Range	±1.1mT Trip, ±0.5mT Release
Voltage Supply	4.5V ~ 30V
Current Supply (Max)	4.5mA
Current Output (Max)	20mA
Output Type	Open Collector
Operating Temperature	-40°C ~ 125°C
Mounting Type	Surface Mount
Package	8-MSOP (0.118", 3.00mm Width)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the ADH025-00 is determined by strict equivalence across the following critical parameters:

Functional Parameters:

Omnipolar switch operation (detection of both north and south magnetic poles)
Hall Effect sensing technology
Open collector output configuration

Electrical Parameters:

Supply voltage range: 4.5V ~ 30V
Maximum supply current: 4.5mA
Maximum output current: 20mA
Sensing threshold: ±1.1mT trip point, ±0.5mT release point

Environmental Parameters:

Operating temperature range: -40°C ~ 125°C
Moisture sensitivity level: 1 (Unlimited)

Mechanical Parameters:

Surface mount technology
8-MSOP package format with 0.118" (3.00mm) width specification

Only components meeting all specified parameters within these categories qualify as direct substitutes.

Parameter Comparison

Parameter	ADH025-00	ADH025-00E	ADH025-00E-TR
Manufacturer	NVE Corp/Sensor Products	NVE Corp/Sensor Products	NVE Corp/Sensor Products
Function	Omnipolar Switch	Omnipolar Switch	Omnipolar Switch
Technology	Hall Effect	Hall Effect	Hall Effect
Sensing Range	±1.1mT Trip, ±0.5mT Release	±1.1mT Trip, ±0.5mT Release	±1.1mT Trip, ±0.5mT Release
Voltage Supply	4.5V ~ 30V	4.5V ~ 30V	4.5V ~ 30V
Current Supply (Max)	4.5mA	4.5mA	4.5mA
Current Output (Max)	20mA	20mA	20mA
Output Type	Open Collector	Open Collector	Open Collector
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package	8-MSOP	8-MSOP	8-MSOP
Product Status	Obsolete	Discontinued at DiGi Electronics	Discontinued at DiGi Electronics
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

ADH025-00E and ADH025-00E-TR are functionally equivalent substitutes for the ADH025-00. Both alternatives maintain identical electrical, functional, and mechanical specifications across all critical parameters.

The primary distinction between these substitutes and the original part is regulatory compliance status. The ADH025-00E and ADH025-00E-TR variants achieve ROHS3 compliance, whereas the ADH025-00 is RoHS non-compliant. This compliance upgrade is significant for applications subject to RoHS directives and environmental regulations.

Both substitute parts are classified as discontinued at DiGi Electronics, indicating limited ongoing availability. Selection between ADH025-00E and ADH025-00E-TR should be based on packaging requirements: ADH025-00E represents the standard component, while ADH025-00E-TR denotes the tape-and-reel packaging format suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can ADH025-00E directly replace ADH025-00 in existing designs?

A: Yes. The ADH025-00E maintains identical electrical specifications, sensing characteristics, output configuration, and package format. No circuit modifications are required for direct substitution.

Q: What is the difference between ADH025-00E and ADH025-00E-TR?

A: Both parts are electrically and functionally identical. The primary difference is packaging format: ADH025-00E is supplied in standard packaging, while ADH025-00E-TR is supplied in tape-and-reel format for automated pick-and-place assembly operations.

Q: Why is RoHS compliance status different between the original and substitute parts?

A: The ADH025-00 predates RoHS3 requirements and is classified as non-compliant. The ADH025-00E and ADH025-00E-TR variants incorporate design updates to achieve ROHS3 compliance, making them suitable for applications in regulated markets.

Q: Are there any temperature or voltage derating considerations when substituting these parts?

A: No. The substitute parts operate within identical temperature ranges (-40°C ~ 125°C) and voltage specifications (4.5V ~ 30V). No derating adjustments are necessary.

Q: What is the sensing range equivalence between these parts?

A: All three parts share identical magnetic sensing thresholds: ±1.1mT trip point and ±0.5mT release point. Omnipolar detection capability (north and south pole sensitivity) is equivalent across all variants.

Q: Are moisture sensitivity levels the same across all variants?

A: Yes. All three parts carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

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