S-817B44AMC-CXHT2G Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The S-817B44AMC-CXHT2G is a linear voltage regulator IC from ABLIC Inc. designed for power management applications. This positive fixed output regulator delivers 65mA at 4.4V with a maximum dropout voltage of 0.3V @ 10mA, suitable for low-power embedded systems and portable devices requiring stable voltage regulation in compact form factors.

The S-817B44AMC-CXHT2G carries a "Not For New Designs" product status. For new design implementations, identifying parametrically equivalent alternatives with active product status is necessary to ensure long-term supply chain reliability and manufacturer support.

Substiute Parts

S-817B44AMC-CXHT2G

ABLIC Inc.In Stock: 943S-817B44AMC-CXHT2G Datasheet

Current PartRFQ

S-817B44AMC-CXHT2U

ABLIC Inc.In Stock: 1025S-817B44AMC-CXHT2U Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S-817B44AMC-CXHT2G is determined by strict equivalence across the following critical parameters:

• Output voltage specification: 4.4V fixed output
• Maximum output current: 65mA
• Maximum input voltage: 10V
• Dropout voltage: 0.3V @ 10mA
• Package type: SOT-23-5 (SC-74A, SOT-753)
• Operating temperature range: -40°C ~ 85°C
• Quiescent current: 2.5 µA
• Mounting configuration: Surface Mount

The S-817B44AMC-CXHT2U qualifies as a parametric equivalent substitute. Both parts share identical electrical specifications, thermal characteristics, and physical packaging. The primary distinction is packaging format: the main part is supplied in Tape & Reel (TR) configuration, while the substitute is available in Cut Tape (CT) format. Additionally, the substitute maintains Active product status, providing ongoing manufacturer support and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

For new design implementations, the S-817B44AMC-CXHT2U is the appropriate selection. This substitute part maintains full parametric equivalence with the S-817B44AMC-CXHT2G while offering Active product status, ensuring manufacturer support and sustained availability throughout the product lifecycle.

Both parts satisfy ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and consumer applications. The MSL rating of 1 (Unlimited) indicates no moisture sensitivity constraints during storage and handling.

The packaging format difference (Cut Tape versus Tape & Reel) does not affect electrical performance or mechanical compatibility. Selection between these formats depends on assembly volume and procurement workflow requirements.

Frequently Asked Questions (FAQ)

Q: Can the S-817B44AMC-CXHT2U be used as a direct replacement for the S-817B44AMC-CXHT2G?

A: Yes. Both parts are parametrically equivalent across all electrical specifications, thermal characteristics, and physical dimensions. The SOT-23-5 package ensures identical PCB footprint and pin configuration compatibility.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, optimized for high-volume automated assembly. Cut Tape (CT) packaging provides components on tape segments, suitable for lower-volume or manual assembly operations. Electrical and mechanical properties remain identical.

Q: Why is the S-817B44AMC-CXHT2G marked "Not For New Designs"?

A: This designation indicates the manufacturer is not actively promoting this part for new applications. The S-817B44AMC-CXHT2U, with Active status, represents the current recommended option for ongoing design work and ensures long-term supply chain support.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical ROHS3 compliance, REACH unaffected status, and MSL rating of 1 (Unlimited). Regulatory and environmental certifications are equivalent.

Q: What are the critical parameters that must match for substitution?

A: Output voltage (4.4V), output current (65mA), maximum input voltage (10V), dropout voltage (0.3V @ 10mA), package type (SOT-23-5), operating temperature range (-40°C ~ 85°C), and quiescent current (2.5 µA) must all remain constant for functional equivalence.