LTR50UZPJ105 Equivalent & Substitute Parts

Part Overview

The LTR50UZPJ105 is a 1 MOhms ±5% 1W thick film chip resistor manufactured by Rohm Semiconductor in the Wide 2010 (5025 Metric) package. This component is designed for automotive applications with AEC-Q200 qualification and pulse withstanding capability. The part is currently active in production with 1049 units in stock. Substitute parts are identified when design requirements allow for improved tolerance specifications or when primary inventory becomes unavailable while maintaining identical electrical performance and mechanical compatibility.

Substiute Parts

LTR50UZPJ105

Rohm SemiconductorIn Stock: 1142LTR50UZPJ105 Datasheet

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LTR50UZPF1004

Rohm SemiconductorIn Stock: 828LTR50UZPF1004 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTR50UZPJ105 is determined by the following critical parameters:

Resistance value must remain 1 MOhms. Package configuration must be Wide 2010 (5025 Metric), 1020 to ensure mechanical and electrical compatibility on the PCB. Power rating must be 1W or greater. Operating temperature range must encompass -55°C to 155°C. Automotive AEC-Q200 qualification is required for applications in automotive environments. RoHS3 compliance must be maintained. Tolerance may be improved from ±5% to ±1% without affecting circuit functionality, provided the substitute part meets all other electrical and mechanical requirements.

Parameter Comparison

Engineering Selection Recommendations

The LTR50UZPJ105 and LTR50UZPF1004 are direct substitutes within the LTR series from Rohm Semiconductor. Both parts maintain identical resistance values, power ratings, package configurations, and automotive AEC-Q200 compliance. The LTR50UZPF1004 provides improved tolerance specification at ±1% compared to ±5%, along with a lower temperature coefficient of ±100ppm/°C versus ±200ppm/°C. Both parts are ROHS3 compliant and suitable for applications requiring automotive-grade reliability. Selection between these parts depends on tolerance requirements for the specific circuit application and current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can LTR50UZPF1004 replace LTR50UZPJ105 in existing designs?

A: Yes. The LTR50UZPF1004 is a direct mechanical and electrical substitute. It maintains the same 1 MOhms resistance, 1W power rating, Wide 2010 package, and AEC-Q200 automotive qualification. The improved ±1% tolerance is backward compatible with designs specified for ±5%.

Q: What is the difference in temperature coefficient between these parts?

A: The LTR50UZPJ105 has a temperature coefficient of ±200ppm/°C, while the LTR50UZPF1004 has ±100ppm/°C. This means the LTR50UZPF1004 exhibits lower resistance drift across the -55°C to 155°C operating range.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the LTR50UZPJ105 and LTR50UZPF1004 carry AEC-Q200 automotive qualification and are designed for automotive-grade reliability and performance.

Q: Do these parts have identical physical dimensions?

A: Yes. Both parts use the Wide 2010 (5025 Metric) package with dimensions of 0.098" L x 0.197" W (2.50mm x 5.00mm) and a maximum seated height of 0.026" (0.65mm). They are mechanically interchangeable on the PCB.

Q: What is the moisture sensitivity level for these parts?

A: Both parts have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without moisture control requirements.