AP7343-185FS4-7B Equivalent & Substitute Parts

Part Overview

The AP7343-185FS4-7B is a linear voltage regulator IC from Diodes Incorporated, classified as a Power Management (PMIC) component. This device delivers a fixed positive output of 1.85V at 300mA with integrated enable control and over-current protection. The part is currently active in production with 845 units in stock. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, inventory constraints, or specific performance trade-offs within the allowed electrical and mechanical parameter ranges.

Substiute Parts

AP7343-185FS4-7B

Diodes IncorporatedIn Stock: 907AP7343-185FS4-7B Datasheet

Current PartRFQ

AP7341-185FS4-7

Diodes IncorporatedIn Stock: 698AP7341-185FS4-7 Datasheet

Parametric EquivalentRFQ

AP7341D-185FS4-7

Diodes IncorporatedIn Stock: 1134AP7341D-185FS4-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP7343-185FS4-7B are identified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

• Fixed output voltage of 1.85V
• Output current capability of 300mA
• Maximum input voltage of 5.25V
• 4-XDFN Exposed Pad package configuration
• Operating temperature range of -40°C ~ 85°C
• Enable control and over-current protection features
• ROHS3 compliance and MSL 1 rating

The AP7341-185FS4-7 and AP7341D-185FS4-7 meet these core electrical and mechanical requirements. Variations in dropout voltage and quiescent current are within acceptable tolerances for this product category and do not preclude substitution when the specified parameters are met.

Parameter Comparison

Engineering Selection Recommendations

All three parts—AP7343-185FS4-7B, AP7341-185FS4-7, and AP7341D-185FS4-7—are active products from Diodes Incorporated with identical ROHS3 compliance and MSL 1 ratings. Selection between these parts is determined by availability and specific application requirements:

• AP7343-185FS4-7B offers the lowest dropout voltage specification at 0.39V @ 300mA, suitable for applications requiring minimal headroom between input and output voltages.
• AP7341-185FS4-7 and AP7341D-185FS4-7 provide lower quiescent current at 50 µA compared to 60 µA, beneficial for battery-powered or low-power standby applications.
• All parts maintain identical output voltage, current rating, package configuration, and temperature operating range.

Frequently Asked Questions (FAQ)

Q: Can AP7341-185FS4-7 or AP7341D-185FS4-7 be used as direct replacements for AP7343-185FS4-7B?

A: Yes, both parts are parametric equivalents. They share the same output voltage (1.85V), output current (300mA), input voltage rating (5.25V), package type (4-XDFN Exposed Pad), and operating temperature range (-40°C ~ 85°C). Dropout voltage and quiescent current differ slightly but remain within acceptable tolerances for this product category.

Q: What is the difference between AP7341-185FS4-7 and AP7341D-185FS4-7?

A: Both parts are functionally equivalent with identical electrical specifications. The primary difference is inventory availability: AP7341D-185FS4-7 has 1027 units in stock compared to 650 units for AP7341-185FS4-7.

Q: Are all three parts in the same package?

A: Yes, all three parts use the 4-XDFN Exposed Pad package configuration with identical pinout and mechanical dimensions, enabling direct PCB layout compatibility.

Q: What compliance certifications apply to these parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. ECCN classification is EAR99 for all parts.

Q: Which part should I select for lowest power consumption?

A: AP7341-185FS4-7 and AP7341D-185FS4-7 both feature 50 µA quiescent current, compared to 60 µA for AP7343-185FS4-7B, making them preferable for applications prioritizing low standby power draw.