78ST165SC Equivalent & Substitute Parts Reference

Part Overview

The Texas Instruments 78ST165SC is a non-isolated PoL (Point-of-Load) DC-DC converter designed for ITE (Commercial) applications, offering a single 6.5V output at up to 1.5A with a 7V–30V input range. This device has reached Obsolete status, making it necessary to identify alternative models with compatible electrical and mechanical specifications. Alternatives are required to maintain supply chain continuity, ensure ongoing manufacturing support, and comply with RoHS3 and REACH directives.

Substiute Parts

78ST165SC

Texas InstrumentsIn Stock: 159278ST165SC Datasheet

Current PartRFQ

R-78B6.5-1.5L

Recom PowerIn Stock: 12491R-78B6.5-1.5L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 78ST165SC is based solely on parameters explicitly provided. Interchangeable parts are grouped by matching the following critical parameters: type (Non-Isolated PoL Module or Linear Regulator Replacement), number of outputs, output voltage (6.5V), maximum output current (1.5A), application (ITE Commercial), output protection features (OTP, SCP), and regulatory compliance (RoHS3, REACH, MSL). Input voltage range, mounting type, and package/case compatibility are also included due to their impact on system design.

Key parameters for substitution:

• Type
• Number of Outputs
• Voltage – Output 1
• Current – Output (Max)
• Input Voltage Range
• Applications
• Features
• Operating Temperature
• Mounting Type
• Package / Case
• Size/Dimension
• RoHS/REACH/Environmental Status
• Moisture Sensitivity Level (MSL)

Parameter Comparison

Engineering Selection Recommendations

The Texas Instruments 78ST165SC is currently Obsolete. The Recom Power R-78B6.5-1.5L is listed as the recommended substitute and is Active. Both models are ROHS3 Compliant and REACH Unaffected, with identical maximum output voltage and current, similar protection features, and equivalent operating temperature ranges. Both parts meet MSL 1 (Unlimited). Use is governed by availability and compliance only as per provided data.

Frequently Asked Questions (FAQ)

Q1: Which parameters are essential for determining a substitute for the 78ST165SC?
A1: Essential parameters include output voltage, maximum output current, number of outputs, input voltage range, features (OTP, SCP), application, mounting type, package/case, size, operating temperature, RoHS/REACH status, and MSL.

Q2: Do mounting type and package differences affect direct replacement?
A2: The 78ST165SC is a surface mount 3-SMD module, while the R-78B6.5-1.5L uses a through-hole 3-SIP module. Mechanical compatibility should be assessed based on these provided package details.

Q3: Are both parts suitable for ITE (Commercial) applications?
A3: Both the main and substitute parts are specified for ITE (Commercial) applications.

Q4: Are both the main part and substitute RoHS and REACH compliant?
A4: Yes, both the 78ST165SC and R-78B6.5-1.5L are ROHS3 Compliant and REACH Unaffected.

Q5: Is the input voltage range identical for both parts?
A5: The 78ST165SC supports a 7V–30V input, while the R-78B6.5-1.5L supports 8V–18V.

Q6: Is there any difference in the number of regulated outputs and key features?
A6: Both parts have 1 regulated output at 6.5V and feature OTP and SCP.