78ST105HC Equivalent & Substitute Parts Reference

Part Overview

The Texas Instruments 78ST105HC is a Non-Isolated PoL Module DC-DC Converter providing a single 5V/1.5A output from a 7V to 30V input. This part is classified as obsolete, impacting long-term sourcing and supply continuity. Identification of suitable alternatives within similar electrical, mechanical, and safety parameters is required for design maintenance and supply assurance.

Substiute Parts

78ST105HC

Texas InstrumentsIn Stock: 311978ST105HC Datasheet

Current PartRFQ

R-78B5.0-1.5L

Recom PowerIn Stock: 64916R-78B5.0-1.5L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 78ST105HC is determined strictly by matching the following key parameters:

• Input Voltage Range
• Output Voltage and Output Current
• Number of Outputs
• Operating Temperature Range
• Package/Case Outline
• Mounting Type
• Compliance (RoHS/REACH/ECCN/MSL/HTSUS)
• Application Features (Over-Temperature Protection, Short Circuit Protection)

Substitute parts are grouped only when these parameters align, ensuring direct mechanical and electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Given that the 78ST105HC is designated as obsolete, selection of a substitute must be based on matching compliance designations such as RoHS3, REACH status, MSL, ECCN, and HTSUS. The R-78B5.0-1.5L from Recom Power matches all mandatory compliance attributes and shares the same protection features and mounting style. Both parts conform to the same safety and environmental standards per the available data.

Frequently Asked Questions (FAQ)

Q1: On what basis is the R-78B5.0-1.5L considered a substitute for the 78ST105HC?
A1: The substitute is selected strictly based on matching key parameters such as input/output voltage, current, protection features, operating temperature, mechanical form factor, and compliance statuses.

Q2: Are the mechanical outlines and mounting styles directly compatible?
A2: Both parts use a 3-SIP module with a through-hole, right angle mounting, ensuring form factor compatibility.

Q3: Is the substitute suitable for environments requiring RoHS and REACH compliance?
A3: Both parts are ROHS3 Compliant and REACH Unaffected, according to provided product data.

Q4: Does the substitute provide the same protection features?
A4: Both parts offer Over-Temperature Protection (OTP) and Short Circuit Protection (SCP).

Q5: Are there differences in efficiency or size that need to be considered?
A5: The R-78B5.0-1.5L shows higher efficiency and a smaller footprint. All other key parameters for substitution are strictly matched per provided information.