HMC7846-AC Equivalent & Substitute Parts

Part Overview

The HMC7846-AC is a Linear Voltage Regulator IC manufactured by Analog Devices Inc., classified as a Power Management (PMIC) component. This device functions as an output linear voltage regulator IC and is currently designated as obsolete. Due to its obsolete product status, identifying equivalent and substitute parts is essential for system redesign, maintenance, and procurement continuity. The availability of active alternative components ensures design flexibility and supply chain reliability for applications requiring linear voltage regulation functionality.

Substiute Parts

HMC7846-AC

Analog Devices Inc.In Stock: 809HMC7846-AC Datasheet

Current PartRFQ

LT3083IT#40PBF

Analog Devices Inc.In Stock: 878LT3083IT#40PBF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HMC7846-AC is based on functional equivalence within the Power Management (PMIC) category, specifically linear voltage regulator IC devices. The primary substitute identified is the LT3083IT#40PBF, also manufactured by Analog Devices Inc. This substitution is valid based on the following criteria:

Key Substitution Parameters:

• Manufacturer alignment (Analog Devices Inc.)
• Functional category (Linear Voltage Regulator IC)
• Product status transition (Obsolete to Active)
• Moisture Sensitivity Level compatibility (MSL 1 in both cases)
• Regulatory compliance framework (ROHS3 Compliant, REACH Unaffected)

The LT3083IT#40PBF represents an active, currently manufactured alternative that maintains functional compatibility with the obsolete HMC7846-AC within the linear voltage regulation application space.

Parameter Comparison

Engineering Selection Recommendations

For Obsolescence Mitigation:

The HMC7846-AC is classified as obsolete. The LT3083IT#40PBF is the identified substitute part and carries an active product status, ensuring long-term availability and continued manufacturing support from Analog Devices Inc.

For Regulatory Compliance:

The LT3083IT#40PBF is ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements. Both parts maintain MSL 1 (Unlimited) moisture sensitivity classification, indicating equivalent handling and storage requirements.

For Supply Chain Continuity:

Current inventory levels support both parts. The LT3083IT#40PBF demonstrates higher inventory availability (838 Pcs) compared to the obsolete HMC7846-AC (718 Pcs), providing enhanced procurement reliability for new designs and production requirements.

For Design Implementation:

Component selection between the HMC7846-AC and LT3083IT#40PBF should be based on application-specific electrical requirements, PCB layout constraints, and thermal management considerations. The LT3083IT#40PBF is packaged in TO-220-5 Formed Leads with through-hole mounting, requiring verification of mechanical compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Why is the HMC7846-AC classified as obsolete?

A: The HMC7846-AC has reached end-of-life status within Analog Devices Inc.'s product portfolio. Obsolete classification indicates that the manufacturer no longer actively produces this component, and existing inventory represents the final available supply.

Q: Is the LT3083IT#40PBF a direct pin-for-pin replacement for the HMC7846-AC?

A: Pin compatibility cannot be confirmed based on the provided technical parameters. The LT3083IT#40PBF is specified in TO-220-5 Formed Leads packaging. PCB layout and schematic verification is required before implementation to ensure mechanical and electrical compatibility.

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

A: Detailed electrical specifications for the HMC7846-AC are not provided in the available documentation. The LT3083IT#40PBF offers specified performance including 3A output current, 0.51V maximum dropout voltage at 3A, and 85dB PSRR at 120Hz. Application requirements must be evaluated against the LT3083IT#40PBF specifications to confirm suitability.

Q: Are both parts subject to the same environmental and regulatory requirements?

A: Both parts maintain MSL 1 (Unlimited) moisture sensitivity classification. The LT3083IT#40PBF is ROHS3 Compliant and REACH Unaffected. Regulatory compliance documentation for the HMC7846-AC is not specified in the available parameters.

Q: What is the packaging difference between these components?

A: The HMC7846-AC packaging is not specified in the available documentation. The LT3083IT#40PBF is supplied in Tube packaging with TO-220-5 Formed Leads and through-hole mounting configuration. This packaging difference may impact PCB design, assembly processes, and thermal management strategies.

Q: How should I verify compatibility before implementing the LT3083IT#40PBF as a substitute?

A: Compatibility verification requires comparison of application circuit requirements against the LT3083IT#40PBF electrical specifications, mechanical footprint validation against PCB design, and thermal performance assessment for the specific operating environment. Consult the LT3083IT#40PBF datasheet for complete technical specifications.

Q: Is inventory availability a consideration for part selection?

A: Current inventory levels show 838 Pcs of LT3083IT#40PBF available compared to 718 Pcs of the obsolete HMC7846-AC. For new designs and production planning, the LT3083IT#40PBF provides enhanced supply chain reliability due to its active product status and continued manufacturing support.