LTC4359HMS8 Equivalent & Substitute Parts

Part Overview

The LTC4359HMS8 is an N+1 ORing Controller manufactured by Analog Devices Inc., designed for redundant power supply applications in telecom infrastructure and similar systems requiring N-channel FET control. This active product operates across a 4V to 80V supply voltage range with automotive-grade qualification. The part is available in 8-MSOP surface mount packaging.

Substitute parts are identified based on identical electrical specifications, mechanical compatibility, and compliance certifications. Alternative part numbers may be required due to packaging variations, inventory availability, or supply chain considerations while maintaining full functional equivalence.

Substiute Parts

LTC4359HMS8

Analog Devices Inc.In Stock: 2144LTC4359HMS8 Datasheet

Current PartRFQ

LTC4359HMS8#PBF

Analog Devices Inc.In Stock: 1496LTC4359HMS8#PBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LTC4359HMS8 is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Equivalence Requirements:

• N+1 ORing Controller topology with N-channel FET control
• N:1 input-to-output ratio configuration
• Supply voltage range: 4V to 80V
• Delay time specifications: 200 µs ON, 300 ns OFF
• Output current capability: 220 µA maximum
• Supply current: 150 µA
• Operating temperature range: -40°C to 125°C

Mechanical & Compliance Requirements:

• 8-MSOP surface mount package (0.118", 3.00mm width)
• Automotive grade qualification
• ROHS3 compliance
• MSL rating of 1 (Unlimited)
• REACH Unaffected status

The LTC4359HMS8#PBF variant meets all these criteria and represents a direct functional equivalent with packaging variation only (tube packaging versus standard packaging).

Parameter Comparison

Engineering Selection Recommendations

Both the LTC4359HMS8 and LTC4359HMS8#PBF are active products from Analog Devices Inc. with identical electrical and mechanical specifications. Selection between these parts is based on packaging and supply chain requirements rather than functional differences.

The LTC4359HMS8#PBF designation indicates tube packaging, which may be preferred for automated assembly processes or specific procurement workflows. Both variants maintain full automotive-grade qualification and ROHS3 compliance, ensuring suitability for redundant power supply applications in telecom infrastructure.

Inventory availability and packaging format should guide selection when both parts are functionally equivalent for the application.

Frequently Asked Questions (FAQ)

Q: Can the LTC4359HMS8#PBF be used as a direct replacement for the LTC4359HMS8?

A: Yes. Both parts are electrically and mechanically identical N+1 ORing Controllers with identical supply voltage ranges (4V to 80V), delay time specifications, current ratings, and operating temperature ranges. The only difference is packaging format (tube versus standard).

Q: What does the "#PBF" designation indicate?

A: The #PBF suffix indicates tube packaging. This is a packaging variation only and does not affect electrical performance or functional compatibility.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the LTC4359HMS8 and LTC4359HMS8#PBF carry automotive-grade qualification and are ROHS3 compliant, meeting automotive industry standards.

Q: What is the significance of the 8-MSOP package specification?

A: The 8-MSOP (8-pin Micro Small Outline Package) with 0.118" width and 3.00mm height is the physical form factor for both parts. This surface mount package is standard for this controller type and ensures PCB compatibility between the two variants.

Q: Can these parts be used interchangeably in production?

A: Yes, provided that the assembly process and packaging handling are compatible with the specific variant selected. The electrical and mechanical specifications are identical, allowing functional interchangeability.

Q: What applications are these parts designed for?

A: The LTC4359HMS8 and LTC4359HMS8#PBF are designed for redundant power supply systems and telecom infrastructure applications requiring N-channel FET ORing control across multiple input sources.