AP7342D-1218FS6-7 Equivalent & Substitute Parts

Part Overview

The AP7342D-1218FS6-7 is a linear voltage regulator IC from Diodes Incorporated designed for positive fixed dual-output applications. This device provides two independent 150mA regulated outputs at 1.2V and 1.8V from a maximum input of 5.25V. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying qualified substitute components is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term product support.

Substiute Parts

AP7342D-1218FS6-7

Diodes IncorporatedIn Stock: 928AP7342D-1218FS6-7 Datasheet

Current PartRFQ

AP7345D-1218RH4-7

Diodes IncorporatedIn Stock: 810AP7345D-1218RH4-7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP7342D-1218FS6-7 is determined by the following critical parameters:

• Output voltage levels: 1.2V and 1.8V fixed outputs
• Dual-regulator configuration with independent channels
• Maximum input voltage: 5.25V
• Output current capability per channel
• Dropout voltage performance
• Surface mount packaging compatibility
• Operating temperature range: -40°C to 85°C
• RoHS3 compliance and MSL rating

The AP7345D-1218RH4-7 qualifies as a substitute based on matching output voltage levels, dual-regulator topology, input voltage rating, operating temperature range, and compliance certifications. The substitute provides enhanced current capability (300mA per channel versus 150mA) and improved package thermal characteristics, making it suitable for applications requiring higher current delivery or better thermal performance within the same voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

The AP7345D-1218RH4-7 is an active product from the same manufacturer, providing design continuity for applications currently using the AP7342D-1218FS6-7. Both devices maintain ROHS3 compliance and MSL Level 1 ratings, ensuring compatibility with standard manufacturing and storage requirements.

Selection of the AP7345D-1218RH4-7 is appropriate when:

• Current requirements exceed 150mA per output channel
• Enhanced thermal performance is required
• Long-term supply availability is prioritized over the Last Time Buy status of the original part
• PCB layout can accommodate the larger 8-pin package footprint

The substitute maintains identical output voltage specifications and input voltage ratings, ensuring functional compatibility in dual-output 1.2V/1.8V regulator applications. The increased quiescent current (140 µA versus 100 µA) and higher dropout voltage at maximum current (0.7V versus 0.5V for the 1.2V output) must be evaluated against specific power budget and thermal design constraints.

Frequently Asked Questions (FAQ)

Q: Can the AP7345D-1218RH4-7 directly replace the AP7342D-1218FS6-7 on existing PCBs?

A: Direct PCB replacement is not possible due to package differences. The AP7342D uses a 6-pin X2-DFN1212-6 package, while the AP7345D uses an 8-pin X2-DFN1612-8 package. PCB layout redesign is required, including footprint modification and potential routing adjustments.

Q: What are the key differences in electrical performance?

A: The primary differences are output current capability (300mA versus 150mA per channel) and dropout voltage characteristics. The AP7345D exhibits higher dropout voltage at maximum current on the 1.2V output (0.7V versus 0.5V) but maintains identical 0.39V dropout on the 1.8V output. Quiescent current increases from 100 µA to 140 µA.

Q: Are both parts suitable for the same temperature range applications?

A: Yes. Both devices operate across the identical temperature range of -40°C to 85°C and maintain the same PSRR specification of 75dB at 1kHz.

Q: What compliance certifications apply to both parts?

A: Both the AP7342D-1218FS6-7 and AP7345D-1218RH4-7 are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (unlimited) moisture sensitivity ratings. Both are classified under ECCN EAR99 and HTSUS code 8542.39.0001.

Q: Why is the original part in Last Time Buy status?

A: Last Time Buy status indicates the manufacturer has discontinued production planning for the AP7342D. The AP7345D-1218RH4-7, as an active product, provides a path forward for continued supply and design support.