ADUM3472ARSZ Equivalent & Substitute Parts

Part Overview

The ADUM3472ARSZ is a general purpose digital isolator manufactured by Analog Devices Inc., part of the iCoupler® series. This component provides galvanic isolation for digital signals across a 2500Vrms barrier with four independent channels, supporting data rates up to 1Mbps. The device is designed for applications requiring robust signal isolation with high common mode transient immunity of 25kV/µs. As an active product in production, the ADUM3472ARSZ remains available; however, alternative part numbers within the same product family may be required due to inventory constraints, specific packaging requirements, or application-specific certifications such as automotive qualification.

Substiute Parts

ADUM3472ARSZ

Analog Devices Inc.In Stock: 2104ADUM3472ARSZ Datasheet

Current PartRFQ

ADUM3472WARSZ

Analog Devices Inc.In Stock: 3899ADUM3472WARSZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ADUM3472ARSZ is determined by strict equivalence across the following critical parameters:

• Isolation Voltage: 2500Vrms (mandatory match)
• Channel Count & Configuration: 4 channels, 2 inputs / 2 outputs per side, unidirectional (mandatory match)
• Data Rate: 1Mbps (mandatory match)
• Common Mode Transient Immunity: 25kV/µs minimum (mandatory match)
• Propagation Delay: 100ns maximum for both tpLH and tpHL (mandatory match)
• Package & Pinout: 20-SSOP with identical mechanical and electrical pinout (mandatory match)
• Supply Voltage Ranges: 3V–3.6V and 4.5–5.5V (mandatory match)
• Operating Temperature: −40°C to +105°C (mandatory match)
• Technology: Magnetic coupling (mandatory match)

The ADUM3472WARSZ meets all these criteria and is therefore a direct parametric equivalent. Differences in moisture sensitivity level (MSL 1 vs. MSL 3) and automotive grade qualification do not affect functional substitution but may influence suitability for specific environmental or supply chain requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the ADUM3472ARSZ and ADUM3472WARSZ are active products with ROHS3 compliance and REACH unaffected status, making them suitable for current production designs. Selection between these parts should be based on the following criteria:

ADUM3472ARSZ is appropriate for general purpose applications where standard moisture sensitivity handling is acceptable and automotive qualification is not required.

ADUM3472WARSZ is appropriate for automotive applications requiring automotive-grade qualification. The higher moisture sensitivity level (MSL 3, 168 hours) requires stricter moisture control during storage and handling compared to MSL 1, but this does not affect electrical performance or functional compatibility.

Both parts share identical electrical specifications, pinout, and package geometry, ensuring direct substitution at the circuit level. Selection should account for supply chain availability, storage environment capabilities, and application-specific certifications.

Frequently Asked Questions (FAQ)

Q: Can ADUM3472WARSZ replace ADUM3472ARSZ in an existing design?

A: Yes. Both parts are electrically and mechanically identical. The ADUM3472WARSZ carries automotive qualification and higher moisture sensitivity level, but these differences do not affect functional performance or pinout compatibility.

Q: What is the difference between MSL 1 and MSL 3?

A: Moisture Sensitivity Level (MSL) defines the maximum time a component can be exposed to ambient conditions (typically 30°C, 85% relative humidity) before soldering. MSL 1 allows unlimited exposure; MSL 3 allows up to 168 hours. If the ADUM3472WARSZ exceeds its MSL window before assembly, it must be baked according to IPC standards before use.

Q: Are the pinouts identical between these parts?

A: Yes. Both the ADUM3472ARSZ and ADUM3472WARSZ use the 20-SSOP package with identical pinout and electrical function. No PCB layout changes are required for substitution.

Q: Do these parts require different supply voltage configurations?

A: No. Both parts support the same dual supply voltage ranges: 3V–3.6V and 4.5V–5.5V. Circuit design remains unchanged.

Q: Which part should be selected for automotive applications?

A: The ADUM3472WARSZ is qualified for automotive use. If automotive certification is required, this part number must be specified.