AP1084K18G-13 Equivalent & Substitute Parts

Part Overview

The AP1084K18G-13 is a linear voltage regulator IC from Diodes Incorporated, classified as a Power Management (PMIC) component. This device delivers a fixed 1.8V output at 5A maximum current in a TO-263 surface mount package. The part is currently listed as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Substitute parts must maintain identical electrical performance characteristics and mechanical compatibility to ensure direct replacement capability.

Key Parameters

Parameter	Value
Output Voltage (Fixed)	1.8V
Output Current	5A
Input Voltage (Max)	12V
Voltage Dropout (Max)	1.4V @ 5A
Quiescent Current	10 mA
Operating Temperature Range	0°C ~ 125°C (TJ)
Package Type	TO-263-3, D2PAK (2 Leads + Tab)
Mounting Type	Surface Mount
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the AP1084K18G-13 are identified based on strict parametric equivalence. The following electrical and mechanical parameters determine substitution eligibility:

Fixed output voltage of 1.8V
Output current rating of 5A
Maximum input voltage of 12V
Voltage dropout specification of 1.4V @ 5A
Quiescent current of 10 mA
Operating temperature range of 0°C ~ 125°C
TO-263 package configuration with identical pinout
Over Current and Over Temperature protection features
ROHS3 compliance and MSL Level 1 rating

The AP1084K18L-13 meets all parametric requirements for direct substitution. The primary difference is packaging format: the main part (AP1084K18G-13) is supplied in Tape & Reel (TR) format, while the substitute (AP1084K18L-13) is supplied in Cut Tape (CT) format. Both parts share identical electrical specifications and mechanical compatibility.

Parameter Comparison

Parameter	AP1084K18G-13	AP1084K18L-13
Manufacturer	Diodes Incorporated	Diodes Incorporated
Category	Power Management (PMIC)	Power Management (PMIC)
Output Voltage (Fixed)	1.8V	1.8V
Output Current	5A	5A
Input Voltage (Max)	12V	12V
Voltage Dropout (Max)	1.4V @ 5A	1.4V @ 5A
Quiescent Current	10 mA	10 mA
Operating Temperature	0°C ~ 125°C (TJ)	0°C ~ 125°C (TJ)
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK
Mounting Type	Surface Mount	Surface Mount
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active
Packaging Format	Tape & Reel (TR)	Cut Tape (CT)

Engineering Selection Recommendations

The AP1084K18L-13 is the direct parametric equivalent for the obsolete AP1084K18G-13. Both parts are manufactured by Diodes Incorporated and maintain identical electrical and mechanical specifications. The AP1084K18L-13 carries Active product status, ensuring continued availability and manufacturing support.

Selection between these parts depends on procurement and assembly requirements. The Tape & Reel format (AP1084K18G-13) is optimized for high-volume automated assembly operations, while the Cut Tape format (AP1084K18L-13) accommodates lower-volume production runs and manual assembly processes. Both formats utilize the same TO-263 package and are fully compatible with existing PCB designs.

Compliance certifications are identical: both parts are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 rating. No design modifications or re-qualification are required when substituting between these parts.

Frequently Asked Questions (FAQ)

Q: Can AP1084K18L-13 replace AP1084K18G-13 in existing designs?

A: Yes. The AP1084K18L-13 is a direct parametric equivalent with identical electrical specifications, output voltage, current rating, and TO-263 package configuration. No circuit modifications are required.

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

A: Tape & Reel (TR) format supplies components on continuous carrier tape in reel form, optimized for automated pick-and-place assembly at high volumes. Cut Tape (CT) format provides components on tape segments, suitable for lower-volume production and manual assembly. Both formats contain the same component in the same package.

Q: Are there any compliance or certification differences between these parts?

A: No. Both AP1084K18G-13 and AP1084K18L-13 carry identical ROHS3 compliance, REACH unaffected status, and MSL Level 1 rating. Regulatory and environmental certifications are equivalent.

Q: Why is the AP1084K18G-13 listed as obsolete?

A: Product obsolescence is determined by the manufacturer based on production lifecycle decisions. The AP1084K18L-13 remains in active production and provides full functional equivalence for ongoing applications.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. Both parts use identical TO-263 package pinouts and mechanical dimensions. They are fully interchangeable at the component level, with selection based only on packaging format requirements for your assembly process.

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