SE98TK,118 Equivalent & Substitute Parts

Part Overview

The SE98TK,118 is a temperature monitoring system sensor manufactured by NXP USA Inc., designed for internal temperature sensing applications with I2C/SMBus output capability. This component operates across a -40°C to 125°C temperature range with ±4°C maximum accuracy and supports both alarm and fan control outputs. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

SE98TK,118

NXP USA Inc.In Stock: 1154SE98TK,118 Datasheet

Current PartRFQ

SE98ATP,547

NXP SemiconductorsIn Stock: 40865SE98ATP,547 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SE98TK,118 is determined by the following critical parameters:

• Identical sensor function (Temp Monitoring System with internal sensing)
• Matching temperature sensing range (-40°C ~ 125°C)
• Equivalent accuracy specification (±4°C maximum)
• Identical output interface (I2C/SMBus protocol)
• Presence of both alarm and fan control outputs
• Compatible supply voltage range (1.7V ~ 3.6V)
• Surface mount configuration
• Equivalent or superior regulatory compliance (ROHS3, REACH Unaffected)

The SE98ATP,547 meets all substitution criteria as an active product from NXP Semiconductors within the same SE98 base product family, maintaining functional equivalence across all specified parameters.

Parameter Comparison

Engineering Selection Recommendations

The SE98ATP,547 is the qualified substitute for the obsolete SE98TK,118 based on the following engineering criteria:

Functional Equivalence: Both components share identical core specifications including temperature sensing range, accuracy, output protocol, and supply voltage requirements. The I2C/SMBus interface, alarm output, and fan control functionality are preserved.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring compatibility with current environmental and regulatory requirements.

Active Product Status: The SE98ATP,547 is an active product with confirmed inventory availability (40,773 pieces), providing long-term supply assurance compared to the obsolete SE98TK,118.

Package Consideration: The substitute uses an 8-HWSON (2x3) package versus the original 8-HVSON (3x3) package. PCB layout modifications are required to accommodate the different physical dimensions and pin configuration. Schematic-level functionality remains unchanged.

Frequently Asked Questions (FAQ)

Q: Can SE98ATP,547 directly replace SE98TK,118 without PCB modifications?

A: No. While functionally equivalent at the schematic level, the package dimensions differ (8-HWSON 2x3 versus 8-HVSON 3x3). PCB footprint redesign is necessary. Pin functionality and electrical characteristics are compatible.

Q: Are the I2C/SMBus protocols identical between these parts?

A: Yes. Both components implement identical I2C/SMBus output protocols with matching alarm and fan control outputs. Software and firmware interfaces require no modification.

Q: What is the impact of different moisture sensitivity levels?

A: SE98TK,118 has MSL 1 (unlimited), while SE98ATP,547 has MSL 3 (168 hours). This affects storage and handling procedures. SE98ATP,547 requires controlled humidity storage and has a 168-hour floor life after moisture exposure.

Q: Is the temperature sensing accuracy maintained in the substitute?

A: Yes. Both parts specify ±4°C maximum accuracy across the identical -40°C to 125°C operating range.

Q: Why is SE98TK,118 classified as obsolete?

A: Product obsolescence is determined by manufacturer lifecycle decisions. The SE98ATP,547 represents the active continuation within the SE98 product family.

Q: Are there any supply voltage compatibility concerns?

A: No. Both components operate across the identical 1.7V to 3.6V supply voltage range with no modifications required to power delivery circuits.