AP2161AW-7 Equivalent & Substitute Parts

Part Overview

The AP2161AW-7 is a Power Switch/Driver IC from Diodes Incorporated, designed for 1:1 P-Channel high-side switching applications with 1A output capability in SOT-25 packaging. This component is classified as Obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across a 2.7V to 5.5V load voltage range with integrated status flag and comprehensive fault protection including current limiting, over-temperature, reverse current, and UVLO monitoring.

Substiute Parts

AP2161AW-7

Diodes IncorporatedIn Stock: 5865AP2161AW-7 Datasheet

Current PartRFQ

AP2161WG-7

Diodes IncorporatedIn Stock: 24200AP2161WG-7 Datasheet

Parametric EquivalentRFQ

AP2171AW-7

Diodes IncorporatedIn Stock: 4294AP2171AW-7 Datasheet

Parametric EquivalentRFQ

AP2171DWG-7

Diodes IncorporatedIn Stock: 2026AP2171DWG-7 Datasheet

Parametric EquivalentRFQ

AP2171WG-7

Diodes IncorporatedIn Stock: 33227AP2171WG-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AP2161AW-7 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Switch Type: USB Switch
• Output Configuration: High Side, P-Channel
• Number of Outputs: 1
• Ratio - Input:Output: 1:1
• Voltage - Load: 2.7V ~ 5.5V
• Current - Output (Max): 1A
• Rds On (Typ): 95mOhm
• Fault Protection: Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: SC-74A, SOT-753
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Variable Parameters (Allowed to Differ):

• Product Status (Obsolete vs. Active)
• Packaging Format (Tape & Reel, Cut Tape & Digi-Reel)
• Input Type (Inverting vs. Non-Inverting)

The substitute parts AP2161WG-7, AP2171AW-7, AP2171DWG-7, and AP2171WG-7 maintain full electrical and mechanical compatibility with the AP2161AW-7 across all critical switching and protection parameters. Differences in input type (Inverting vs. Non-Inverting) and packaging format represent design variations that do not affect core substitution eligibility when circuit topology accommodates the input logic configuration.

Parameter Comparison

Engineering Selection Recommendations

AP2161WG-7 is the primary substitute for AP2161AW-7 when maintaining Inverting input logic is required. This part is Active status with highest inventory availability (24,100 units) and Tape & Reel packaging suitable for automated assembly processes.

AP2171AW-7 and AP2171DWG-7 and AP2171WG-7 are suitable substitutes when Non-Inverting input logic is acceptable for the application circuit. All three AP2171 variants are Active status parts with varying packaging formats. AP2171WG-7 offers the highest inventory level (33,200 units) among the AP2171 series.

Selection between substitute parts should prioritize:

1. Input logic compatibility (Inverting vs. Non-Inverting) with existing circuit design
2. Packaging format alignment with production assembly capabilities
3. Inventory availability for supply chain continuity

All substitute parts maintain ROHS3 compliance and identical electrical performance specifications across switching, protection, and thermal operating ranges.

Frequently Asked Questions (FAQ)

Q: Can AP2161WG-7 directly replace AP2161AW-7 in existing designs? A: Yes. AP2161WG-7 maintains identical electrical specifications and input logic (Inverting). The primary difference is packaging format (Tape & Reel vs. Bulk) and Active product status. No circuit modifications are required.

Q: What is the difference between AP2161 and AP2171 series parts? A: The AP2161 series uses Inverting input logic, while AP2171 series uses Non-Inverting input logic. All other electrical parameters, including output configuration, current rating, voltage range, and fault protection, are identical. Selection depends on the input signal logic required by the application circuit.

Q: Are the AP2171 variants (AW-7, DWG-7, WG-7) electrically interchangeable? A: Yes. All AP2171 variants are electrically identical. Differences exist only in packaging format: AW-7 and WG-7 use Tape & Reel, while DWG-7 uses Cut Tape & Digi-Reel. Selection should be based on assembly process requirements and inventory availability.

Q: Does the SOT-25 package remain consistent across all substitute parts? A: Yes. All parts use SC-74A, SOT-753 package designation, ensuring PCB layout and footprint compatibility without design modifications.

Q: What is the significance of Active vs. Obsolete product status? A: Active status indicates ongoing manufacturer support, continued production, and long-term availability. Obsolete status indicates the part is no longer manufactured. Substituting with Active parts (AP2161WG-7, AP2171 series) ensures supply chain continuity and future design flexibility.

Q: Are there any compliance or certification differences between the main part and substitutes? A: No. All parts maintain identical ROHS3 compliance, MSL Level 1 (Unlimited), and REACH Unaffected status. Regulatory and environmental certifications are equivalent across all variants.