TLE42712SAKSA1 Equivalent & Substitute Parts

Part Overview

The TLE42712SAKSA1 is a linear voltage regulator IC from Infineon Technologies' OPTIREG™ series, designed for positive fixed 5V output at 550mA in a TO-220-7 package. This device is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and component procurement. The part integrates reset and watchdog control features with comprehensive protection including over-current, over-temperature, over-voltage, reverse polarity, and short-circuit protection, making it suitable for automotive-grade applications requiring AEC-Q100 qualification.

Substiute Parts

TLE42712SAKSA1

Infineon TechnologiesIn Stock: 954TLE42712SAKSA1 Datasheet

Current PartRFQ

LT3081ET7#06PBF

Analog Devices Inc.In Stock: 1036LT3081ET7#06PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLE42712SAKSA1 is determined by the following critical parameters:

• Package Compatibility: TO-220-7 through-hole mounting
• Output Configuration: Positive polarity
• Voltage Output: Fixed 5V output requirement
• Current Capacity: Minimum 550mA output current
• Input Voltage Range: Support for up to 40V input
• Dropout Voltage: Low dropout performance at rated current
• Protection Features: Over-current, over-temperature, and reverse-polarity protection
• Mounting Type: Through-hole configuration

The LT3081ET7#06PBF qualifies as a functional substitute based on matching package type (TO-220-7), positive output configuration, through-hole mounting, and comprehensive protection features. However, key differences exist in output type (adjustable vs. fixed), current capacity (1.5A vs. 550mA), and input voltage rating (36V vs. 40V).

Parameter Comparison

Engineering Selection Recommendations

The LT3081ET7#06PBF is available as an active product from Analog Devices Inc., addressing the obsolescence status of the TLE42712SAKSA1. Both devices share identical TO-220-7 packaging and through-hole mounting, enabling direct PCB footprint compatibility without layout modifications.

The LT3081ET7#06PBF provides superior current capacity (1.5A vs. 550mA) and improved PSRR performance across the frequency spectrum. The adjustable output configuration of the LT3081ET7#06PBF allows fixed 5V operation through external resistor network configuration, matching the fixed-output requirement of the original design.

Key compliance differences exist: the LT3081ET7#06PBF is ROHS3 compliant, whereas the TLE42712SAKSA1 is RoHS non-compliant. The LT3081ET7#06PBF operates to 125°C maximum junction temperature compared to 150°C for the original part. The input voltage maximum rating of 36V for the LT3081ET7#06PBF is 4V lower than the 40V specification of the TLE42712SAKSA1.

Selection should account for application-specific requirements regarding maximum junction temperature, input voltage headroom, and RoHS compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can the LT3081ET7#06PBF directly replace the TLE42712SAKSA1 without circuit modifications?

A: The LT3081ET7#06PBF shares the TO-220-7 package and pin configuration, enabling direct PCB footprint compatibility. However, the adjustable output type requires external resistor configuration to establish fixed 5V output, whereas the TLE42712SAKSA1 provides fixed 5V output without external components. Circuit design modifications are necessary to implement the output voltage divider network.

Q: What are the current capacity implications of substitution?

A: The LT3081ET7#06PBF provides 1.5A output current, exceeding the 550mA specification of the TLE42712SAKSA1. This increased capacity does not create compatibility issues for applications designed for 550mA operation and provides additional design margin.

Q: How do the input voltage ratings compare?

A: The TLE42712SAKSA1 accepts input voltages up to 40V, while the LT3081ET7#06PBF is rated to 36V maximum. Applications operating near the 40V limit require verification that the LT3081ET7#06PBF input voltage specification remains adequate.

Q: Are there thermal operating range differences?

A: The TLE42712SAKSA1 operates to 150°C junction temperature, while the LT3081ET7#06PBF is specified to 125°C. Applications requiring operation above 125°C junction temperature cannot use the LT3081ET7#06PBF as a substitute.

Q: What protection features are equivalent between the two devices?

A: Both devices provide over-current, over-temperature, and reverse-polarity protection. The TLE42712SAKSA1 includes additional over-voltage protection not present in the LT3081ET7#06PBF. The TLE42712SAKSA1 also includes short-circuit protection, which is present in the LT3081ET7#06PBF.

Q: Does RoHS compliance status affect substitution decisions?

A: The LT3081ET7#06PBF is ROHS3 compliant, while the TLE42712SAKSA1 is RoHS non-compliant. Applications subject to RoHS regulatory requirements must use the LT3081ET7#06PBF or equivalent compliant alternatives.