Equivalent & Substitute Parts for 601-00513

Part Overview

The Parallax Inc. 601-00513 is a linear voltage regulator IC designed to deliver a fixed 3.3V output at 500mA in a TO-220-3 package. This component functions as a positive fixed output regulator with integrated protection features including over-temperature, reverse polarity, and short-circuit protection. The part is discontinued at DiGi Electronics, necessitating identification of equivalent substitute components that maintain identical electrical and mechanical specifications for seamless integration into existing designs.

Substiute Parts

601-00513

Parallax Inc.In Stock: 920601-00513 Datasheet

Current PartRFQ

LM2937ET-3.3/NOPB

Texas InstrumentsIn Stock: 2144LM2937ET-3.3/NOPB Datasheet

DirectRFQ

LM2937ET-3.3

Texas InstrumentsIn Stock: 3342LM2937ET-3.3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the 601-00513 are qualified based on the following critical parameters that determine functional equivalence:

Electrical Equivalence Criteria:

• Fixed 3.3V output voltage
• 500mA output current capability
• Maximum input voltage of 26V
• 10mA quiescent current specification
• Operating temperature range of -40°C to 125°C

Mechanical Equivalence Criteria:

• TO-220-3 package configuration
• Through-hole mounting type

Protection Feature Alignment:

• Over-temperature protection
• Short-circuit protection

The substitute parts identified maintain all specified electrical parameters and package requirements, ensuring direct functional replacement in circuit applications without design modification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: LM2937ET-3.3/NOPB

The LM2937ET-3.3/NOPB from Texas Instruments is the direct equivalent for the 601-00513. This component maintains all specified electrical parameters and package requirements. The LM2937ET-3.3/NOPB carries Active product status with 2100 units in stock, ensuring long-term availability. This part includes ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The addition of mirror-image insertion and transient voltage protection features provides enhanced circuit protection beyond the original specification.

Secondary Substitute: LM2937ET-3.3

The LM2937ET-3.3 from Texas Instruments is a parametric equivalent with identical electrical and mechanical specifications. This part carries Last Time Buy status with 3264 units in stock. Selection of this component should account for its limited availability window. The LM2937ET-3.3 maintains ROHS3 compliance and REACH unaffected status. Both Texas Instruments variants share the same base product number (LM2937) and provide equivalent circuit performance.

Availability and Compliance Considerations:

The LM2937ET-3.3/NOPB is the recommended selection due to its Active product status, ensuring continued availability for future procurement cycles. Both substitute parts satisfy RoHS and environmental compliance requirements applicable to the original component. All three components operate within the identical temperature range and maintain the same moisture sensitivity classification.

Frequently Asked Questions (FAQ)

Q: Can the LM2937ET-3.3/NOPB be used as a direct replacement for the 601-00513?

A: Yes. The LM2937ET-3.3/NOPB maintains identical output voltage (3.3V), output current (500mA), input voltage rating (26V), quiescent current (10mA), operating temperature range (-40°C to 125°C), and TO-220-3 package configuration. No circuit modifications are required for substitution.

Q: What is the difference between LM2937ET-3.3/NOPB and LM2937ET-3.3?

A: Both parts are electrically and mechanically identical. The primary difference is product status: LM2937ET-3.3/NOPB is Active, while LM2937ET-3.3 is Last Time Buy. The "/NOPB" designation indicates lead-free plating. For new designs, LM2937ET-3.3/NOPB is the preferred selection.

Q: Are there any protection feature differences between the original and substitute parts?

A: The original 601-00513 includes over-temperature, reverse polarity, and short-circuit protection. The LM2937 variants include over-temperature, short-circuit, mirror-image insertion, and transient voltage protection. The substitute parts provide equivalent or enhanced protection coverage.

Q: What is the voltage dropout specification for these regulators?

A: The LM2937ET-3.3/NOPB and LM2937ET-3.3 specify 1V dropout at 500mA output current. The original 601-00513 does not specify dropout voltage in the provided parameters.

Q: Are all three parts RoHS compliant?

A: Yes. The 601-00513 is RoHS Compliant. Both LM2937ET-3.3/NOPB and LM2937ET-3.3 are ROHS3 Compliant, meeting current regulatory standards.

Q: Can these regulators be used in applications requiring reverse polarity protection?

A: The LM2937ET-3.3/NOPB and LM2937ET-3.3 include mirror-image insertion protection. The original 601-00513 specifies reverse polarity protection. Both approaches provide protection against incorrect input polarity connection.

Q: What is the moisture sensitivity level for these components?

A: All three parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.