AP2155SG-13 Equivalent & Substitute Parts

Part Overview

The AP2155SG-13 is a Power Management Integrated Circuit (PMIC) manufactured by Diodes Incorporated, functioning as a P-Channel power switch driver with 1:1 configuration and 500mA output capacity. This component is classified as a USB Switch and is currently listed as obsolete. Due to its obsolete status and limited availability relative to active alternatives, identifying equivalent substitute parts is essential for ongoing design support and production continuity.

Substiute Parts

AP2155SG-13

Diodes IncorporatedIn Stock: 1708AP2155SG-13 Datasheet

Current PartRFQ

AP2145SG-13

Diodes IncorporatedIn Stock: 18414AP2145SG-13 Datasheet

Parametric EquivalentRFQ

AP2151AS-13

Diodes IncorporatedIn Stock: 12686AP2151AS-13 Datasheet

Parametric EquivalentRFQ

AP2151SG-13

Diodes IncorporatedIn Stock: 12771AP2151SG-13 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP2155SG-13 are qualified based on strict electrical and mechanical parameter matching:

Critical Matching Parameters:

• Output Type: P-Channel
• Current - Output (Max): 500mA
• Voltage - Load: 2.7V ~ 5.5V
• Rds On (Typ): 95mOhm
• Operating Temperature: -40°C ~ 85°C (TA)
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Fault Protection: Current Limiting (Fixed), Over Temperature, Reverse Current, UVLO
• Features: Status Flag
• Interface: On/Off
• Input Type: Non-Inverting

All substitute parts listed maintain identical electrical specifications and thermal operating ranges. Packaging remains consistent across all alternatives, ensuring mechanical compatibility with existing PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

AP2145SG-13: This part is electrically and mechanically identical to the AP2155SG-13 with active product status. The primary distinction is Moisture Sensitivity Level (MSL) rating of 3 (168 Hours) compared to MSL 1 (Unlimited) for the original part. This MSL difference requires adherence to moisture control protocols during storage and handling but does not affect electrical performance or thermal characteristics.

AP2151AS-13 and AP2151SG-13: Both parts maintain full electrical and thermal equivalence to the AP2155SG-13. These alternatives carry active product status and MSL 1 (Unlimited) rating, matching the original part's moisture sensitivity classification. The primary difference between AP2151AS-13 and AP2151SG-13 is the supplier device package designation (8-SO vs. 8-SO), though both maintain the same 8-SOIC physical package specification.

All substitute parts are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance with the original component.

Frequently Asked Questions (FAQ)

Q: Can AP2145SG-13 be used as a direct replacement for AP2155SG-13?

A: Yes. AP2145SG-13 is electrically and mechanically equivalent. The MSL 3 rating requires moisture control during storage (168-hour limit after bag opening) but does not affect circuit performance or thermal operation.

Q: What is the difference between AP2151AS-13 and AP2151SG-13?

A: Both parts are electrically identical with identical electrical specifications, thermal ratings, and MSL 1 classification. The designation difference (AS vs. SG) reflects supplier device package coding but results in the same 8-SOIC physical package.

Q: Are all substitute parts pin-compatible with AP2155SG-13?

A: Yes. All substitute parts use the 8-SOIC (0.154", 3.90mm Width) package, ensuring mechanical and pin compatibility with existing PCB designs.

Q: Why is AP2155SG-13 listed as obsolete?

A: The AP2155SG-13 is no longer in active production. AP2145SG-13, AP2151AS-13, and AP2151SG-13 are active alternatives that provide identical electrical and thermal performance.

Q: Do substitute parts maintain the same fault protection features?

A: Yes. All substitute parts include identical fault protection: Current Limiting (Fixed), Over Temperature, Reverse Current, and UVLO (Under Voltage Lock Out), plus Status Flag functionality.

Q: What is the impact of different MSL ratings on component selection?

A: MSL 1 (Unlimited) parts have no moisture exposure time restrictions. MSL 3 (168 Hours) parts require moisture control protocols—the component must be used within 168 hours of bag opening under specified humidity conditions. Selection depends on manufacturing environment and storage capabilities.