X9C503PI Digital Potentiometer Equivalent & Substitute Parts

Part Overview

The X9C503PI is a digital potentiometer manufactured by Renesas Electronics Corporation, classified as a data acquisition component. This 50kΩ device features 100 taps with an Up/Down (U/D, INC, CS) interface and operates on a 5V supply. The part is currently obsolete, making identification of compatible substitutes essential for ongoing system support and component procurement.

Substiute Parts

X9C503PI

Renesas Electronics CorporationIn Stock: 1333X9C503PI Datasheet

Current PartRFQ

DS1804-050+

Analog Devices Inc./Maxim IntegratedIn Stock: 2445DS1804-050+ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the X9C503PI is determined by strict equivalence across the following critical parameters:

• Resistance value: 50kΩ
• Number of taps: 100
• Interface protocol: Up/Down (U/D, INC, CS)
• Memory type: Non-Volatile
• Package type: 8-DIP (0.300", 7.62mm)
• Mounting method: Through Hole
• Operating temperature range: -40°C to 85°C

The DS1804-050+ meets all these core substitution criteria. While differences exist in supply voltage range, temperature coefficient, and wiper resistance, these variations do not prevent functional substitution when the application operates within the specified parameters of both devices.

Parameter Comparison

Engineering Selection Recommendations

The DS1804-050+ serves as a direct functional substitute for the X9C503PI based on matching core electrical and mechanical specifications. The substitute part offers the advantage of active product status, ensuring continued availability and supply chain stability. The DS1804-050+ also provides ROHS3 compliance, addressing regulatory requirements that may apply to new designs or system updates.

The wider supply voltage range (2.7V to 5.5V) of the DS1804-050+ provides additional operational flexibility compared to the fixed 5V requirement of the X9C503PI. Both devices maintain identical operating temperature ranges and package footprints, enabling direct board-level replacement without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the DS1804-050+ replace the X9C503PI in existing designs?

A: Yes. Both devices share identical resistance values (50kΩ), tap counts (100), interface protocols (Up/Down with U/D, INC, CS), memory types (Non-Volatile), and 8-DIP package specifications. Pin-to-pin compatibility and functional equivalence are confirmed.

Q: What are the differences between these parts?

A: The primary differences are product status (X9C503PI is obsolete; DS1804-050+ is active), supply voltage range (X9C503PI requires 5V; DS1804-050+ operates 2.7V to 5.5V), temperature coefficient (X9C503PI: ±300ppm/°C; DS1804-050+: 750ppm/°C), and RoHS compliance status (X9C503PI is non-compliant; DS1804-050+ is ROHS3 compliant).

Q: Are there any circuit design considerations when switching to the DS1804-050+?

A: The DS1804-050+ operates across a broader supply voltage range. If your application uses 5V, both parts function identically. The higher temperature coefficient of the DS1804-050+ may introduce slightly greater resistance drift across temperature extremes, though both maintain the same operating temperature range (-40°C to 85°C).

Q: Is the package footprint identical?

A: Yes. Both the X9C503PI and DS1804-050+ use 8-DIP (0.300", 7.62mm) through-hole packages, enabling direct PCB replacement without layout changes.

Q: What is the wiper resistance difference?

A: The X9C503PI has a typical wiper resistance of 40Ω, while the DS1804-050+ has 400Ω. This difference should be evaluated in applications where wiper resistance significantly affects circuit performance.