IX9908NTR Equivalent & Substitute Parts

Part Overview

The IX9908NTR is an AC DC offline switcher LED driver IC manufactured by IXYS Integrated Circuits Division. This single-output flyback topology device operates with a supply voltage range of 10.5V to 18V and is designed for lighting applications. The part is currently active in production with 876 units in stock. Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameters for offline LED driver applications.

Substiute Parts

IX9908NTR

IXYS Integrated Circuits DivisionIn Stock: 932IX9908NTR Datasheet

Current PartRFQ

LNK420EG

Power IntegrationsIn Stock: 18277LNK420EG Datasheet

MFR RecommendedRFQ

RT7306DGS

Richtek USA Inc.In Stock: 10753RT7306DGS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IX9908NTR are identified based on the following critical parameters that define functional equivalence in offline LED driver applications:

• Type: AC DC Offline Switcher
• Topology: Flyback
• Number of Outputs: 1
• Applications: Lighting
• Supply Voltage Range Overlap: Minimum 10.5V to 18V compatibility window
• Mounting Type: Surface Mount capability
• Package Compatibility: 8-pin surface mount packages

The identified substitutes maintain the core offline switcher architecture and single-output configuration required for LED driver functionality. Variations in internal switch configuration, dimming method, and extended supply voltage ranges do not preclude substitution when the primary operating parameters align with the IX9908NTR application envelope.

Parameter Comparison

Engineering Selection Recommendations

LNK420EG (Power Integrations): This substitute operates at a higher supply voltage range (36V to 725V) compared to the IX9908NTR (10.5V to 18V). The LNK420EG features an integrated internal switch and PWM dimming capability. The part uses a through-hole 7-SSIP package rather than surface mount, requiring PCB layout modification. Product status is active with RoHS compliance and MSL 1 rating. The extended temperature range (-40°C to 150°C) provides broader operational envelope than the IX9908NTR.

RT7306DGS (Richtek USA Inc.): This substitute maintains surface mount compatibility with the IX9908NTR through the 8-SOIC package format. The supply voltage range (11V to 34V) overlaps the IX9908NTR operating window. The RT7306DGS supports multiple topologies (Flyback, Buck, Boost) and analog dimming. Product status is active with ROHS3 compliance. The MSL 3 rating (168 hours) requires controlled moisture handling compared to the IX9908NTR MSL 1 rating. Operating temperature range is -40°C to 125°C.

Frequently Asked Questions (FAQ)

Q: Can the LNK420EG directly replace the IX9908NTR on the same PCB?

A: No. The LNK420EG uses a through-hole 7-SSIP package with formed leads, while the IX9908NTR is a surface mount 8-SOIC device. PCB layout redesign is required for mechanical and electrical integration.

Q: Is the RT7306DGS a pin-compatible substitute for the IX9908NTR?

A: Both devices use 8-SOIC surface mount packages with 0.154" width. Pin compatibility depends on the specific application schematic and internal function mapping. Datasheet comparison of pin assignments is required before substitution.

Q: What is the impact of the RT7306DGS MSL 3 rating versus IX9908NTR MSL 1?

A: MSL 3 (168 hours) requires moisture control during storage and handling. Components must be stored in dry conditions and baked before reflow if moisture absorption occurs. MSL 1 (unlimited) has no moisture sensitivity restrictions.

Q: Does the LNK420EG's higher supply voltage range (36V to 725V) affect substitution feasibility?

A: The LNK420EG operates at a different voltage envelope than the IX9908NTR (10.5V to 18V). Application circuit design must accommodate the higher voltage range. The substitute is not suitable for low-voltage applications limited to the IX9908NTR range.

Q: Are all three parts RoHS compliant?

A: Yes. The IX9908NTR and RT7306DGS are ROHS3 compliant. The LNK420EG is RoHS compliant. All parts meet environmental compliance requirements for their respective standards.