X9C104ST1 Digital Potentiometer Equivalent & Substitute Parts

Part Overview

The X9C104ST1 is a digital potentiometer manufactured by Renesas Electronics Corporation, featuring 100k Ohm resistance with 100 taps and Up/Down (U/D, INC, CS) interface control. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and production continuity. The part operates at 5V supply voltage with linear taper configuration and non-volatile memory, suitable for precision analog signal adjustment applications in data acquisition systems.

Substiute Parts

X9C104ST1

Renesas Electronics CorporationIn Stock: 926X9C104ST1 Datasheet

Current PartRFQ

X9C104SZT1

Renesas Electronics CorporationIn Stock: 957X9C104SZT1 Datasheet

DirectRFQ

CAT5113VI-01-GT3

onsemiIn Stock: 5173CAT5113VI-01-GT3 Datasheet

SimilarRFQ

DS1804Z-100+

Analog Devices Inc./Maxim IntegratedIn Stock: 2289DS1804Z-100+ Datasheet

SimilarRFQ

DS1804Z-100+T&R

Analog Devices Inc./Maxim IntegratedIn Stock: 3448DS1804Z-100+T&R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the X9C104ST1 is determined by the following critical parameters:

• Resistance Value: 100k Ohm (primary functional requirement)
• Number of Taps: 100 (resolution specification)
• Interface Protocol: Up/Down (U/D, INC, CS) (control compatibility)
• Memory Type: Non-Volatile (data retention requirement)
• Package: 8-SOIC (physical and electrical compatibility)
• Supply Voltage Compatibility: Must support 5V operation

Substitute parts are grouped into two categories:

Direct Equivalents maintain identical electrical specifications and packaging, differing only in product status or packaging format.

Functional Equivalents provide the same core functionality with variations in supply voltage range, temperature coefficient, or operating temperature range, requiring design verification for specific application constraints.

Parameter Comparison

Engineering Selection Recommendations

X9C104SZT1 is the primary direct equivalent. This Renesas part maintains identical electrical specifications and operating parameters as the X9C104ST1. The primary distinction is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. Tube). This part is ROHS3 compliant and recommended for new designs requiring direct pin-for-pin replacement with improved compliance status.

DS1804Z-100+ and DS1804Z-100+T&R are functional equivalents manufactured by Analog Devices Inc./Maxim Integrated. Both maintain 100k Ohm resistance, 100 taps, and Up/Down interface compatibility. These parts feature expanded supply voltage range (2.7V ~ 5.5V) and extended operating temperature range (-40°C ~ 85°C), providing greater design flexibility. Temperature coefficient is higher at 750ppm/°C compared to the original specification. Both variants are ROHS3 compliant and Active status. Selection between tube (DS1804Z-100+) and tape & reel (DS1804Z-100+T&R) packaging depends on procurement and assembly requirements.

CAT5113VI-01-GT3 is a functional equivalent from onsemi with significant parameter deviation. This part features 1k Ohm resistance instead of 100k Ohm, making it unsuitable for direct substitution in applications requiring 100k Ohm specification. This part is listed as Obsolete and is not recommended for new designs.

Frequently Asked Questions (FAQ)

Q: Can X9C104SZT1 be used as a direct replacement for X9C104ST1?

A: Yes. X9C104SZT1 maintains identical electrical specifications, interface protocol, and package configuration. The primary differences are product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. Tube). Pin-for-pin compatibility is confirmed.

Q: What are the key differences between DS1804Z-100+ variants and the original X9C104ST1?

A: DS1804Z-100+ and DS1804Z-100+T&R maintain 100k Ohm resistance and 100-tap configuration with identical interface control. Differences include: expanded supply voltage range (2.7V ~ 5.5V vs. 5V), extended operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C), and higher temperature coefficient (750ppm/°C vs. ±300ppm/°C). Both are ROHS3 compliant and Active status.

Q: Is CAT5113VI-01-GT3 compatible with X9C104ST1?

A: No. CAT5113VI-01-GT3 features 1k Ohm resistance, not 100k Ohm. This fundamental resistance value difference makes it unsuitable for direct substitution in applications requiring 100k Ohm specification.

Q: What packaging options are available for substitute parts?

A: X9C104SZT1 is available in Tape & Reel format. DS1804Z-100+ is supplied in Tube packaging, while DS1804Z-100+T&R is available in Cut Tape & Digi-Reel format. CAT5113VI-01-GT3 is supplied in Cut Tape format. All maintain 8-SOIC package configuration.

Q: Are all substitute parts ROHS3 compliant?

A: X9C104SZT1, DS1804Z-100+, DS1804Z-100+T&R, and CAT5113VI-01-GT3 are all ROHS3 compliant. The original X9C104ST1 is RoHS non-compliant.

Q: Which substitute part is recommended for new designs?

A: X9C104SZT1 is the primary recommendation for new designs requiring direct electrical and functional equivalence. DS1804Z-100+ or DS1804Z-100+T&R are recommended when extended operating temperature range or expanded supply voltage range is required.