NCP100ALPRPG Equivalent & Substitute Parts

Part Overview

The NCP100ALPRPG is a shunt voltage reference IC manufactured by onsemi, designed for adjustable output voltage applications in power management circuits. This component operates with an adjustable output range from 0.9V to 6V and supports a maximum output current of 20 mA. The part is classified as obsolete, making equivalent substitute components necessary for new designs and ongoing production requirements.

Substiute Parts

NCP100ALPRPG

onsemiIn Stock: 818NCP100ALPRPG Datasheet

Current PartRFQ

TS431IZT

STMicroelectronicsIn Stock: 5126TS431IZT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the NCP100ALPRPG is determined by the following critical parameters:

• Reference Type: Shunt voltage reference
• Output Type: Adjustable
• Voltage Range: 0.9V to 6V output capability
• Current Rating: Minimum 20 mA output current support
• Package: TO-92-3 through-hole configuration
• Tolerance: ±1.7% or better
• Operating Temperature Range: Minimum -40°C to 85°C

The TS431IZT from STMicroelectronics meets these substitution criteria. Both components are shunt voltage reference ICs with adjustable output, identical package types, and compatible through-hole mounting. The TS431IZT provides superior performance specifications including higher output current (30 mA), extended temperature range (-40°C to 125°C), and improved tolerance (±2%), while maintaining full functional compatibility within the specified parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

The TS431IZT is a direct functional substitute for the NCP100ALPRPG based on matching package type, reference architecture, and adjustable output capability. The substitute component offers active product status, ensuring long-term availability and supply chain continuity. The TS431IZT carries ROHS3 compliance certification, meeting current environmental and regulatory requirements for electronic components.

The minimum output voltage difference (0.9V versus 1.24V) must be evaluated against specific circuit requirements. Applications requiring output voltages below 1.24V will require circuit topology modifications or alternative component selection. The increased output current capability (30 mA versus 20 mA) and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C) provide design margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the TS431IZT directly replace the NCP100ALPRPG without circuit modifications?

A: Direct pin-compatible replacement is possible due to identical TO-92-3 package configuration. However, the minimum output voltage specification differs (1.24V versus 0.9V). Circuit validation is required if the application requires output voltages below 1.24V.

Q: What is the primary reason for substitution?

A: The NCP100ALPRPG is classified as obsolete. The TS431IZT is an active product with confirmed availability and supply chain support.

Q: Are there compliance differences between these components?

A: The TS431IZT carries ROHS3 compliance certification. Both components share identical REACH and ECCN classifications (REACH Unaffected, EAR99).

Q: How do the tolerance specifications compare?

A: The NCP100ALPRPG specifies ±1.7% tolerance, while the TS431IZT specifies ±2%. Both tolerances are suitable for general voltage reference applications. Circuit design margins should account for the wider tolerance of the substitute.

Q: What is the impact of different cathode current specifications?

A: The TS431IZT requires lower cathode current (60 µA versus 100 µA), reducing power consumption in the reference circuit. This represents an improvement over the original component.

Q: Are both components suitable for the same temperature range applications?

A: The TS431IZT supports an extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). Applications operating above 85°C benefit from the substitute component's wider temperature specification.