AP2171DFMG-7 Equivalent & Substitute Parts

Part Overview

The AP2171DFMG-7 is an active power switch IC from Diodes Incorporated, classified as a Power Management (PMIC) component. This P-Channel USB switch operates as a 1:1 high-side driver with 1A maximum output current and integrated fault protection. The part is in active production status with 156,400 units currently in stock. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility within the same product family.

Substiute Parts

AP2171DFMG-7

Diodes IncorporatedIn Stock: 156427AP2171DFMG-7 Datasheet

Current PartRFQ

AP2161FMG-7

Diodes IncorporatedIn Stock: 8456AP2161FMG-7 Datasheet

Parametric EquivalentRFQ

AP2171AFM-7

Diodes IncorporatedIn Stock: 3578AP2171AFM-7 Datasheet

Parametric EquivalentRFQ

AP2171FMG-7

Diodes IncorporatedIn Stock: 5205AP2171FMG-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AP2171DFMG-7 is determined by the following critical parameters:

• Electrical Specifications: Output type (P-Channel), output configuration (High Side), maximum output current (1A), load voltage range (2.7V ~ 5.5V), and on-resistance (90mOhm typical)
• Functional Characteristics: Switch type (USB Switch), input/output ratio (1:1), interface type (On/Off), and integrated fault protection features (Current Limiting, Over Temperature, Reverse Current, UVLO)
• Physical Compatibility: Package type (6-UFDFN Exposed Pad), mounting method (Surface Mount), and supplier device package (U-DFN2018-6)
• Compliance & Environmental: Operating temperature range (-40°C ~ 85°C), RoHS3 compliance, MSL rating (1), and REACH status

The three substitute parts listed below maintain identical electrical performance and mechanical compatibility with the main part. Differences exist only in input logic type (Inverting vs. Non-Inverting) and packaging format (Tape & Reel vs. Cut Tape).

Parameter Comparison

Engineering Selection Recommendations

All four parts maintain active production status with full ROHS3 compliance and REACH unaffected certification. Selection between AP2171DFMG-7 and its substitutes depends on application-specific requirements:

AP2171DFMG-7 (Primary Part): Non-inverting input logic with Tape & Reel packaging. Highest inventory availability (156,400 units) supports high-volume production requirements.

AP2161FMG-7: Inverting input logic with Tape & Reel packaging. Suitable for applications requiring inverted control signal interpretation. Lower inventory (8,406 units) may impact lead time for large orders.

AP2171AFM-7: Non-inverting input logic with Tape & Reel packaging. Functionally equivalent to AP2171DFMG-7 with reduced inventory (3,506 units). Selection based on supply chain availability.

AP2171FMG-7: Non-inverting input logic with Cut Tape and Digi-Reel packaging format. Appropriate for lower-volume applications or mixed component sourcing. Inventory of 5,099 units supports moderate production volumes.

Input logic type (inverting vs. non-inverting) is the primary functional differentiator. Packaging format (Tape & Reel vs. Cut Tape) affects procurement and assembly processes but not electrical performance.

Frequently Asked Questions (FAQ)

Q: Can AP2161FMG-7 replace AP2171DFMG-7 directly in my circuit?

A: AP2161FMG-7 is electrically equivalent in all parameters except input logic type. AP2161FMG-7 uses inverting input logic while AP2171DFMG-7 uses non-inverting logic. Direct substitution requires circuit modification to accommodate the inverted control signal, or the part cannot be used as a drop-in replacement.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel packaging is supplied on continuous carrier tape wound on reels, suitable for automated pick-and-place assembly of high-volume production. Cut Tape and Digi-Reel packaging provides smaller quantities on cut tape segments, appropriate for lower-volume builds or mixed component sourcing. Electrical and mechanical specifications remain identical.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All four parts use the 6-UFDFN Exposed Pad package with U-DFN2018-6 supplier device package designation. PCB footprint, solder pad layout, and mounting requirements are identical across all parts.

Q: Which substitute part should I select for new designs?

A: For new designs, AP2171DFMG-7 or AP2171FMG-7 are recommended based on packaging requirements (Tape & Reel vs. Cut Tape). Both use non-inverting input logic, matching standard control signal conventions. AP2171DFMG-7 offers superior inventory availability for high-volume production.

Q: Do all parts meet the same environmental and compliance standards?

A: Yes. All four parts are ROHS3 compliant, REACH unaffected, and rated for -40°C to 85°C operating temperature. MSL rating of 1 (Unlimited) applies to all parts, indicating no moisture sensitivity restrictions during storage or handling.

Q: What is the on-resistance specification and why does it matter?

A: All parts specify 90mOhm typical on-resistance (Rds On). This parameter determines power dissipation and voltage drop across the switch during operation. Lower on-resistance reduces heat generation and improves efficiency in high-current applications. The identical 90mOhm specification across all parts ensures equivalent thermal performance.