HXT42400-DNU Equivalent & Substitute Parts

Part Overview

The HXT42400-DNU is a laser driver integrated circuit manufactured by Renesas Electronics Corporation, designed for high-speed optical modulation applications. This die-form component operates at 28 Gbps across 4 channels with a 2.5V supply voltage. The part is classified as obsolete, necessitating identification of active equivalent components for ongoing design requirements and production continuity.

Substiute Parts

HXT42400-DNU

Renesas Electronics CorporationIn Stock: 920HXT42400-DNU Datasheet

Current PartRFQ

HXT8204-DNG

Renesas Electronics CorporationIn Stock: 1127HXT8204-DNG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HXT42400-DNU is determined by the following critical parameters:

Primary Substitution Criteria:

• Manufacturer alignment (Renesas Electronics Corporation)
• Functional classification (Laser Driver IC / Modulator Driver)
• Active product status (required for ongoing availability)
• Regulatory compliance (RoHS3 and REACH status)
• Package form factor (die-level components)

The HXT8204-DNG is identified as a substitute component based on shared manufacturer origin, laser driver functionality, and active product status. Both components are manufactured by Renesas Electronics Corporation and serve optical modulation driver applications.

Parameter Comparison

Engineering Selection Recommendations

HXT8204-DNG Selection Basis:

The HXT8204-DNG is an active product offering from Renesas Electronics Corporation, providing continuity for designs currently utilizing the obsolete HXT42400-DNU. Both components share identical manufacturer origin and die-level packaging, ensuring compatibility within existing die-bonding and assembly processes.

The substitute part maintains REACH Unaffected status, confirming regulatory alignment with the original component. Active product status of the HXT8204-DNG ensures long-term availability and supply chain stability, addressing the primary limitation of the obsolete HXT42400-DNU.

Component selection should be validated against specific application requirements regarding data rate, channel count, and current specifications, as these parameters determine functional equivalence in optical modulation circuits.

Frequently Asked Questions (FAQ)

Q: Why is the HXT42400-DNU classified as obsolete?

A: The HXT42400-DNU has reached end-of-life status with Renesas Electronics Corporation. Obsolete classification indicates the manufacturer no longer produces this component, necessitating transition to active alternatives for new production and design continuity.

Q: What is the primary substitution criterion for laser driver ICs?

A: Laser driver ICs are substituted based on functional classification (modulator driver type), manufacturer consistency, data rate capability, channel configuration, and supply voltage specifications. Package form factor (die-level) and regulatory compliance status are secondary but critical criteria.

Q: Are HXT42400-DNU and HXT8204-DNG pin-compatible?

A: Both components are supplied in die form, requiring direct die-bonding integration. Pin compatibility is determined by specific die pad configuration and bonding requirements, which must be verified against detailed datasheets and application schematics.

Q: Does the HXT8204-DNG meet the same regulatory requirements as the HXT42400-DNU?

A: Both components maintain REACH Unaffected status. Regulatory compliance alignment confirms that substitution does not introduce environmental or hazardous substance restrictions. RoHS compliance status of the HXT8204-DNG should be confirmed against specific application requirements.

Q: What inventory status should be considered when selecting between these components?

A: The HXT42400-DNU has 899 pieces in stock (obsolete status), while the HXT8204-DNG has 1062 pieces in stock (active status). For new designs and long-term production, the active HXT8204-DNG provides superior supply chain reliability and availability assurance.

Q: Can the HXT8204-DNG be used as a direct replacement in existing assemblies?

A: Direct replacement feasibility depends on circuit-level compatibility, including data rate requirements, channel count, current specifications, and die bonding pad layout. Engineering validation against application-specific parameters is required before implementation.