AP3418KTR-G1 Equivalent & Substitute Parts

Part Overview

The AP3418KTR-G1 is a buck switching regulator IC from Diodes Incorporated designed for positive adjustable output applications. This device delivers 1.5A output current with an adjustable output voltage range from 0.6V to 5.5V, operating from a 2.5V to 5.5V input supply. The part is mounted in a SC-74A (SOT-753) surface mount package and operates across the industrial temperature range of -40°C to 85°C.

The AP3418KTR-G1 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

AP3418KTR-G1

Diodes IncorporatedIn Stock: 35259AP3418KTR-G1 Datasheet

Current PartRFQ

AP61200Z6-7

Diodes IncorporatedIn Stock: 3146AP61200Z6-7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP3418KTR-G1 is determined by the following critical parameters:

• Input voltage compatibility: 2.5V to 5.5V minimum range
• Output voltage adjustability: 0.6V minimum threshold
• Output current capacity: minimum 1.5A
• Topology: Buck switching regulator with synchronous rectification
• Operating temperature range: -40°C to 85°C
• Surface mount packaging with compatible pinout
• RoHS3 compliance and REACH unaffected status

The AP61200Z6-7 meets these substitution criteria while offering enhanced specifications in certain parameters.

Parameter Comparison

Engineering Selection Recommendations

The AP61200Z6-7 is the manufacturer-recommended substitute for the AP3418KTR-G1. Both devices are manufactured by Diodes Incorporated and maintain identical compliance certifications (ROHS3 Compliant, REACH Unaffected, EAR99 ECCN classification).

The AP61200Z6-7 offers improved specifications including higher output current capacity (2A versus 1.5A) and lower minimum input voltage (2.3V versus 2.5V). The substitute maintains the same operating temperature range and synchronous rectification topology.

The primary design consideration is the maximum output voltage specification: the AP61200Z6-7 limits maximum output voltage to 3.6V, compared to 5.5V for the AP3418KTR-G1. Applications requiring output voltages above 3.6V cannot use this substitute without circuit redesign.

The AP61200Z6-7 is currently in active production status with established supply chain availability, whereas the AP3418KTR-G1 is obsolete. The substitute features improved moisture sensitivity (MSL 1 versus MSL 3), reducing handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the AP61200Z6-7 directly replace the AP3418KTR-G1 in all applications?

A: Direct replacement is possible only for applications where the maximum output voltage requirement does not exceed 3.6V. The AP3418KTR-G1 supports output voltages up to 5.5V, while the AP61200Z6-7 is limited to 3.6V maximum output. Verify your application's output voltage specification before substitution.

Q: What are the package differences between these parts?

A: The AP3418KTR-G1 uses SC-74A (SOT-753) packaging, while the AP61200Z6-7 uses SOT-563 (SOT-666) packaging. These are different physical packages and require PCB layout modifications. Pinout compatibility must be verified during design integration.

Q: Are both parts RoHS compliant?

A: Yes, both the AP3418KTR-G1 and AP61200Z6-7 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of the Moisture Sensitivity Level difference?

A: The AP3418KTR-G1 has MSL 3 (168 hours), requiring controlled storage and handling conditions. The AP61200Z6-7 has MSL 1 (unlimited), eliminating moisture sensitivity constraints and reducing storage complexity.

Q: Does the AP61200Z6-7 provide sufficient output current for applications using the AP3418KTR-G1?

A: The AP61200Z6-7 provides 2A output current compared to 1.5A for the AP3418KTR-G1, offering 33% higher current capacity. This makes it suitable for applications requiring the original 1.5A specification and provides design margin for future current demands.

Q: What input voltage range considerations apply to substitution?

A: The AP61200Z6-7 accepts lower minimum input voltage (2.3V versus 2.5V), expanding operational range. Both devices support the same 5.5V maximum input. Applications operating at 2.3V to 2.5V input can benefit from the substitute's extended lower voltage capability.