S-817B18AMC-CWHT2G Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The S-817B18AMC-CWHT2G is a linear voltage regulator IC from ABLIC Inc. designed for power management applications. This device delivers a fixed 1.8V output at 20mA in a compact SOT-23-5 surface mount package. The part is classified as Not For New Designs, which necessitates identification of suitable substitute components for ongoing production and maintenance applications. The S-817 series provides stable voltage regulation with minimal quiescent current consumption, making it suitable for battery-powered and low-power circuit designs.

Substiute Parts

S-817B18AMC-CWHT2G

ABLIC Inc.In Stock: 7382S-817B18AMC-CWHT2G Datasheet

Current PartRFQ

S-817B18AMC-CWHT2U

ABLIC Inc.In Stock: 3593S-817B18AMC-CWHT2U Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S-817B18AMC-CWHT2G is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 1.8V
• Output current capability of 20mA
• Maximum input voltage of 10V
• Voltage dropout specification of 0.99V @ 10mA
• Quiescent current of 2.5 µA
• Operating temperature range of -40°C ~ 85°C
• SOT-23-5 package configuration
• Surface mount technology compatibility

The S-817B18AMC-CWHT2U meets all these criteria as a parametric equivalent within the S-817 series. The primary distinction between these parts is product status: the main part is Not For New Designs, while the substitute is Active, making it the preferred selection for new applications and ongoing production.

Parameter Comparison

Engineering Selection Recommendations

The S-817B18AMC-CWHT2U is the direct substitute for the S-817B18AMC-CWHT2G. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The substitute part carries Active product status, indicating ongoing manufacturer support and availability. For applications currently using the S-817B18AMC-CWHT2G, transition to the S-817B18AMC-CWHT2U is supported by identical electrical specifications and package configuration. The substitute part maintains the same MSL rating and thermal characteristics, ensuring compatibility in existing PCB designs without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the S-817B18AMC-CWHT2U be used as a direct replacement for the S-817B18AMC-CWHT2G?

A: Yes. Both parts are parametrically equivalent across all electrical and mechanical specifications. The SOT-23-5 package footprint is identical, and all electrical parameters including output voltage, current rating, dropout voltage, and quiescent current are matched. No circuit modifications are required.

Q: What is the difference between these two part numbers?

A: The primary difference is product status. The S-817B18AMC-CWHT2G is classified as Not For New Designs, while the S-817B18AMC-CWHT2U is Active. This distinction reflects manufacturer support and availability. All functional and electrical characteristics are identical.

Q: Are there any package or mounting differences?

A: No. Both parts use the SOT-23-5 package (SC-74A designation) with surface mount technology. PCB footprints and assembly processes are identical.

Q: Do these parts have the same compliance certifications?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited). Environmental and regulatory compliance is equivalent.

Q: What is the significance of the quiescent current specification?

A: The 2.5 µA quiescent current specification indicates the current consumed by the regulator itself when no load is present. This low value is critical for battery-powered applications where standby power consumption must be minimized. Both parts meet this specification identically.