X9409WV24Z Equivalent & Substitute Parts

Part Overview

The X9409WV24Z is a digital potentiometer manufactured by Renesas Electronics Corporation, classified as a Data Acquisition component. This 10kΩ, 4-circuit, 64-tap device features an I2C interface and non-volatile memory, housed in a 24-TSSOP surface mount package. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new designs requiring similar performance characteristics.

Substiute Parts

X9409WV24Z

Renesas Electronics CorporationIn Stock: 1189X9409WV24Z Datasheet

Current PartRFQ

X9401WV24IZ-2.7

Renesas Electronics CorporationIn Stock: 2267X9401WV24IZ-2.7 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the X9409WV24Z is constrained by the following critical parameters:

Mechanical Compatibility: Package type (24-TSSOP) and mounting method (Surface Mount) must remain identical to ensure PCB layout compatibility without redesign.

Functional Equivalence: Resistance value (10kΩ), number of circuits (4), and tap count (64) define the core potentiometer function and must be preserved.

Electrical Characteristics: Supply voltage range, interface protocol, and memory type determine system integration feasibility.

The X9401WV24IZ-2.7 shares identical mechanical packaging, resistance value, circuit count, and tap configuration. However, it differs in interface protocol (SPI vs. I2C) and supply voltage range (2.7V–5.5V vs. 5V fixed), requiring circuit-level evaluation for compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution Not Recommended: The X9401WV24IZ-2.7 cannot serve as a direct pin-compatible replacement due to interface protocol differences (SPI vs. I2C). Microcontroller firmware and communication protocol implementation must be modified to accommodate SPI operation.

Electrical Considerations: The X9401WV24IZ-2.7 operates across 2.7V–5.5V, providing supply voltage flexibility. However, the 10× increase in temperature coefficient (±300ppm/°C vs. ±30ppm/°C) and 3× higher wiper resistance (150Ω vs. 50Ω) may impact precision applications requiring tight tolerance control or low-impedance signal paths.

Compliance Status: Both components maintain ROHS3 compliance and identical moisture sensitivity levels (MSL 3, 168 hours), supporting equivalent environmental qualification requirements.

Product Availability: The X9401WV24IZ-2.7 is actively manufactured with confirmed inventory (2200 pcs), whereas the X9409WV24Z is obsolete. Selection of the X9401WV24IZ-2.7 ensures long-term supply continuity.

Frequently Asked Questions (FAQ)

Q: Can the X9401WV24IZ-2.7 replace the X9409WV24Z without circuit modification?

A: No. The X9401WV24IZ-2.7 uses SPI interface protocol, while the X9409WV24Z uses I2C. Microcontroller firmware and communication logic must be redesigned. PCB layout remains compatible due to identical 24-TSSOP packaging.

Q: What are the key electrical differences between these parts?

A: Supply voltage range differs (5V fixed vs. 2.7V–5.5V). Temperature coefficient is 10× higher in the substitute (±300ppm/°C vs. ±30ppm/°C). Wiper resistance is 3× higher (150Ω vs. 50Ω). These differences affect precision, temperature stability, and signal integrity in low-impedance circuits.

Q: Are both parts RoHS compliant?

A: Yes. Both X9409WV24Z and X9401WV24IZ-2.7 are ROHS3 compliant with identical moisture sensitivity levels (MSL 3, 168 hours).

Q: Which part should be selected for new designs?

A: The X9401WV24IZ-2.7 is recommended for new designs due to active manufacturing status and extended operating temperature range (-40°C to 85°C). The X9409WV24Z is obsolete and should not be specified for new applications.

Q: Does the wider supply voltage range of the X9401WV24IZ-2.7 provide any advantage?

A: Yes. The 2.7V–5.5V range supports operation in lower-voltage systems and provides margin for supply voltage variations. However, this advantage applies only if the system design is modified to accommodate SPI protocol.

Q: What is the impact of higher wiper resistance in the X9401WV24IZ-2.7?

A: Higher wiper resistance (150Ω vs. 50Ω) increases output impedance and may affect circuits requiring low-impedance signal sources. Verify compatibility in applications with high-impedance loads or precision analog signal conditioning.