AP7361-33D-13 Equivalent & Substitute Parts

Part Overview

The AP7361-33D-13 is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to provide a fixed 3.3V output at 1A maximum current. This positive fixed output regulator operates across an input voltage range up to 6V and features integrated protection against overcurrent, overtemperature, and short circuit conditions. The device is housed in a TO-252 (DPAK) surface mount package and maintains active product status with full RoHS3 compliance.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

AP7361-33D-13

Diodes IncorporatedIn Stock: 30436AP7361-33D-13 Datasheet

Current PartRFQ

BD33KA5FP-E2

Rohm SemiconductorIn Stock: 36882BD33KA5FP-E2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AP7361-33D-13 is determined by the following critical parameters:

• Fixed output voltage of 3.3V
• Surface mount TO-252-3 (DPAK) package compatibility
• Positive output configuration
• Single regulator output
• RoHS3 compliance and REACH unaffected status
• Operating temperature range support

The BD33KA5FP-E2 qualifies as a substitute based on matching output voltage, package type, and compliance certifications. However, the substitute part exhibits reduced maximum output current (500mA versus 1A) and different electrical characteristics in dropout voltage and quiescent current specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the AP7361-33D-13 and BD33KA5FP-E2 maintain active product status and full RoHS3 compliance, ensuring long-term availability and regulatory alignment for new designs and production environments.

Selection between these devices must account for application-specific current requirements. The AP7361-33D-13 supports continuous output current up to 1A, while the BD33KA5FP-E2 is rated for maximum 500mA output current. Applications requiring output currents exceeding 500mA cannot use the BD33KA5FP-E2 as a direct substitute.

The BD33KA5FP-E2 offers superior dropout voltage performance at lower current levels (0.2V @ 200mA) and an extended operating temperature range to 105°C. The AP7361-33D-13 provides superior power supply rejection ratio (PSRR) characteristics across the 1kHz to 10kHz frequency band and lower quiescent current consumption.

Input voltage maximum ratings differ: the AP7361-33D-13 accepts up to 6V while the BD33KA5FP-E2 is limited to 5.5V. Circuit designs operating near the upper input voltage boundary require the AP7361-33D-13.

Frequently Asked Questions (FAQ)

Q: Can the BD33KA5FP-E2 replace the AP7361-33D-13 in all applications?

A: No. The BD33KA5FP-E2 has a maximum output current rating of 500mA compared to the AP7361-33D-13's 1A rating. Substitution is only valid for applications requiring 500mA or less continuous output current.

Q: Are both devices pin-compatible?

A: Yes. Both devices use the TO-252-3 (DPAK) package with identical pinout configuration, enabling direct physical replacement on PCBs designed for either part.

Q: What is the impact of different quiescent current specifications?

A: The AP7361-33D-13 draws 90 µA quiescent current while the BD33KA5FP-E2 draws 550 µA. In battery-powered or low-power standby applications, the AP7361-33D-13 provides superior efficiency during no-load or light-load conditions.

Q: Do both devices meet the same compliance requirements?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS codes, ensuring equivalent regulatory and export compliance.

Q: What are the input voltage constraints for substitution?

A: The AP7361-33D-13 accepts input voltages up to 6V, while the BD33KA5FP-E2 is limited to 5.5V maximum. Circuits with input voltages between 5.5V and 6V require the AP7361-33D-13.

Q: How do the protection features differ?

A: The AP7361-33D-13 includes short circuit protection in addition to overcurrent and overtemperature protection. The BD33KA5FP-E2 provides overcurrent and overtemperature protection only.