LE50CZ-TR Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LE50CZ-TR is a linear voltage regulator IC manufactured by STMicroelectronics, designed to provide a fixed positive 5V output at 100mA. This device operates as a single-output positive fixed regulator in a TO-92-3 through-hole package configuration. The LE50CZ-TR is classified as an obsolete product, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain identical electrical performance and mechanical compatibility to ensure direct replacement capability in existing applications.

Substiute Parts

LE50CZ-TR

STMicroelectronicsIn Stock: 1083LE50CZ-TR Datasheet

Current PartRFQ

LE50ABZ-AP

STMicroelectronicsIn Stock: 1024LE50ABZ-AP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LE50CZ-TR are identified based on strict parametric equivalence across the following critical criteria:

Electrical Parameters:

• Fixed positive 5V output voltage
• 100mA maximum output current capability
• 18V maximum input voltage rating
• 0.5V maximum dropout voltage at 100mA
• Identical quiescent current (1mA) and supply current specifications
• Matching PSRR performance (76dB ~ 60dB across 120Hz ~ 10kHz)
• Equivalent protection features (Over Current, Over Temperature)
• Identical operating temperature range (-40°C ~ 125°C)

Mechanical Parameters:

• TO-92-3 package configuration with formed leads
• Through-hole mounting compatibility
• Identical base product number (LE50) designation

Compliance Parameters:

• RoHS3 compliance
• REACH unaffected status
• Matching EAR99 and HTSUS classifications

Substitution is valid only when all electrical, mechanical, and compliance parameters align with the specifications provided for the main part.

Parameter Comparison

Engineering Selection Recommendations

The LE50ABZ-AP is a direct parametric equivalent to the LE50CZ-TR with complete electrical and mechanical compatibility. All critical performance specifications, protection features, and compliance certifications are identical between the two parts.

Primary Advantage: The LE50ABZ-AP maintains active product status with STMicroelectronics, whereas the LE50CZ-TR is classified as obsolete. This distinction is significant for long-term supply chain reliability and technical support availability.

Packaging Consideration: The LE50ABZ-AP is supplied in Cut Tape (CT) packaging, while the original LE50CZ-TR packaging format is not specified in the provided data. Both parts utilize the identical TO-92-3 through-hole package configuration, ensuring mechanical interchangeability on printed circuit boards.

Compliance Status: Both parts maintain RoHS3 compliance, REACH unaffected status, and identical export classification codes (EAR99, HTSUS 8542.39.0001), confirming regulatory equivalence for global applications.

Selection Basis: For new designs and production continuity, the LE50ABZ-AP is the appropriate selection due to its active product status and guaranteed long-term availability from STMicroelectronics.

Frequently Asked Questions (FAQ)

Q: Can the LE50ABZ-AP directly replace the LE50CZ-TR in existing circuit designs?

A: Yes. The LE50ABZ-AP is a complete parametric equivalent with identical electrical specifications, output voltage (5V fixed), current rating (100mA), input voltage range (18V max), dropout voltage (0.5V @ 100mA), protection features, and operating temperature range (-40°C ~ 125°C). The TO-92-3 through-hole package configuration is identical, enabling direct board-level substitution without circuit modification.

Q: What is the significance of the product status difference between these parts?

A: The LE50CZ-TR is classified as obsolete, indicating STMicroelectronics has discontinued active production and support. The LE50ABZ-AP maintains active product status, ensuring continued availability, technical documentation support, and supply chain reliability for current and future applications.

Q: Are there packaging differences that affect component handling or storage?

A: The LE50ABZ-AP is supplied in Cut Tape (CT) packaging format, which differs from the unspecified packaging of the LE50CZ-TR. Both parts are housed in the identical TO-92-3 through-hole package with formed leads. The Cut Tape format is standard for automated assembly processes and does not affect the component's electrical performance or board-level compatibility.

Q: Do both parts meet the same regulatory and compliance requirements?

A: Yes. Both the LE50CZ-TR and LE50ABZ-AP are RoHS3 compliant, REACH unaffected, and classified under identical export control codes (EAR99) and tariff classifications (HTSUS 8542.39.0001). Moisture sensitivity level is equivalent (MSL 1 - Unlimited) for both parts.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by matching the following parameters: fixed positive 5V output voltage, 100mA output current capability, 18V maximum input voltage, 0.5V maximum dropout voltage at 100mA, 1mA quiescent current, 3mA maximum supply current, 76dB ~ 60dB PSRR performance, over current and over temperature protection, and -40°C ~ 125°C operating temperature range. All parameters are identical between the LE50CZ-TR and LE50ABZ-AP.

Q: Is the LE50 base product number significant for substitution?

A: Yes. Both parts share the identical base product number (LE50), indicating they are variants of the same core regulator design from STMicroelectronics. This designation confirms they are part of the same product family with equivalent functional specifications and performance characteristics.