X9C503P Digital Potentiometer Equivalent & Substitute Parts

Part Overview

The X9C503P is a digital potentiometer manufactured by Renesas Electronics Corporation, featuring 50kΩ resistance with 100 taps and an Up/Down (U/D, INC, CS) interface in an 8-PDIP package. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations. The part operates on 5V supply and provides non-volatile memory storage for wiper position retention.

Substiute Parts

X9C503P

Renesas Electronics CorporationIn Stock: 5642X9C503P Datasheet

Current PartRFQ

DS1804-050+

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the X9C503P is determined by strict alignment with the following core parameters:

• Resistance Value: 50kΩ (exact match required)
• Number of Taps: 100 (exact match required)
• Interface Protocol: Up/Down (U/D, INC, CS) (exact match required)
• Memory Type: Non-Volatile (exact match required)
• Package Format: 8-DIP (0.300", 7.62mm) (exact match required)
• Mounting Technology: Through Hole (exact match required)
• Circuit Configuration: Single circuit potentiometer (exact match required)
• Taper Characteristic: Linear (exact match required)

The DS1804-050+ meets all mandatory substitution criteria and is classified as a direct equivalent for the X9C503P.

Parameter Comparison

Engineering Selection Recommendations

The DS1804-050+ is the qualified substitute for the X9C503P based on functional equivalence across all mandatory electrical and mechanical parameters. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

The DS1804-050+ provides an extended supply voltage range (2.7V ~ 5.5V) compared to the X9C503P (5V fixed), offering greater design flexibility for systems requiring variable supply voltages. The substitute part also supports an expanded operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C), enabling deployment in more demanding thermal environments.

The DS1804-050+ achieves ROHS3 compliance, whereas the X9C503P is non-compliant. This distinction is significant for applications subject to regulatory requirements or customer specifications mandating RoHS compliance.

Wiper resistance differs between the parts (40Ω typical for X9C503P versus 400Ω typical for DS1804-050+). Temperature coefficient specifications also vary (±300ppm/°C versus 750ppm/°C). These parameter differences must be evaluated within the context of specific circuit requirements and tolerance budgets.

Frequently Asked Questions (FAQ)

Q: Can the DS1804-050+ directly replace the X9C503P in existing designs?

A: The DS1804-050+ is functionally equivalent across all core parameters: 50kΩ resistance, 100 taps, Up/Down interface, non-volatile memory, and 8-DIP package. Direct pin-compatible substitution is supported. However, differences in wiper resistance and temperature coefficient require verification against circuit tolerance requirements.

Q: What are the key differences between these parts?

A: The primary differences are: (1) Supply voltage range—DS1804-050+ accepts 2.7V ~ 5.5V versus X9C503P at 5V fixed; (2) Operating temperature—DS1804-050+ supports -40°C ~ 85°C versus X9C503P at 0°C ~ 70°C; (3) RoHS compliance—DS1804-050+ is ROHS3 compliant while X9C503P is non-compliant; (4) Wiper resistance—DS1804-050+ is 400Ω typical versus X9C503P at 40Ω typical; (5) Temperature coefficient—DS1804-050+ is 750ppm/°C versus X9C503P at ±300ppm/°C.

Q: Are there any package or pinout considerations?

A: Both parts use identical 8-DIP (0.300", 7.62mm) through-hole packages with matching pinouts. No PCB layout modifications are required for substitution.

Q: Why is the X9C503P obsolete?

A: The X9C503P is classified as obsolete by Renesas Electronics Corporation. The DS1804-050+ from Analog Devices/Maxim Integrated represents the active production alternative for this functional category.

Q: Does the DS1804-050+ meet regulatory requirements?

A: The DS1804-050+ is ROHS3 compliant and REACH unaffected. The X9C503P is RoHS non-compliant. Regulatory compliance requirements should be evaluated against specific application standards.