FSL136MRS Equivalent & Substitute Parts

Part Overview

The FSL136MRS is an offline switch flyback converter IC manufactured by onsemi, designed for isolated power management applications. This component operates at 67kHz switching frequency with 26W power capacity and integrated fault protection including current limiting, overload, overvoltage, and short circuit protection. The FSL136MRS is classified as obsolete, making identification of active equivalent parts essential for new designs and production continuity.

Substiute Parts

FSL136MRS

onsemiIn Stock: 2239FSL136MRS Datasheet

Current PartRFQ

FSL136MR

onsemiIn Stock: 26323FSL136MR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The FSL136MRS has one direct equivalent part: FSL136MR. Substitution is valid based on the following critical parameters that remain identical between both parts:

• Topology: Flyback converter architecture
• Output Isolation: Isolated configuration
• Voltage - Breakdown: 650V maximum rating
• Voltage - Supply (Vcc/Vdd): 8V ~ 26V input range
• Voltage - Start Up: 12V threshold
• Frequency - Switching: 67kHz operating frequency
• Power (Watts): 26W output capacity
• Duty Cycle: 77%
• Fault Protection: Current Limiting, Over Load, Over Temperature, Over Voltage, Short Circuit
• Operating Temperature: -40°C ~ 105°C (TA)
• Package / Case: 8-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole

The primary distinction between these parts is product status and packaging format, with FSL136MR being the active production equivalent.

Parameter Comparison

Engineering Selection Recommendations

FSL136MR is the direct active equivalent for FSL136MRS. Selection of FSL136MR is appropriate for new designs and production applications due to its active product status and ROHS3 compliance certification. The FSL136MRS, being obsolete, should be replaced with FSL136MR in all new applications. Both parts maintain identical electrical and thermal specifications, ensuring functional compatibility in existing circuit designs. The packaging format difference (bulk versus tube) does not affect electrical performance and represents only a supply chain consideration.

Frequently Asked Questions (FAQ)

Q: Can FSL136MR directly replace FSL136MRS in existing designs? A: Yes. FSL136MR is electrically and mechanically identical to FSL136MRS. All critical parameters including voltage ratings, switching frequency, power capacity, fault protection features, and thermal operating range are identical. The 8-DIP through-hole package is the same, allowing direct PCB substitution.

Q: What is the primary reason to switch from FSL136MRS to FSL136MR? A: FSL136MRS is classified as obsolete, while FSL136MR is an active product. FSL136MR ensures long-term supply availability and compliance with current regulatory standards including ROHS3.

Q: Are there any compliance differences between these parts? A: FSL136MR carries ROHS3 compliance certification, while FSL136MRS compliance status is not specified. Both parts maintain REACH Unaffected status. For applications requiring ROHS3 compliance, FSL136MR is the appropriate selection.

Q: Does the packaging format difference affect circuit performance? A: No. The packaging format difference (bulk for FSL136MRS versus tube for FSL136MR) is a supply chain consideration only. Both formats contain identical components with identical electrical characteristics. The difference does not affect circuit design, PCB layout, or performance.

Q: Are the pin configurations identical between FSL136MRS and FSL136MR? A: Yes. Both parts use the 8-DIP (0.300", 7.62mm) package with identical through-hole mounting specifications, ensuring pin-for-pin compatibility.