AP130-18SAG-7 Equivalent & Substitute Parts

Part Overview

The AP130-18SAG-7 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 300mA with integrated protection features including over-current, over-temperature, and short-circuit protection. The part is currently in active production status with 4400 units available in stock.

Substitute parts are necessary when the original SOT-23-3 package variant becomes unavailable, when alternative packaging formats (Tape & Reel versus Cut Tape) are required for manufacturing processes, or when inventory constraints necessitate sourcing from alternative package configurations within the same electrical specification family.

Substiute Parts

AP130-18SAG-7

Diodes IncorporatedIn Stock: 4461AP130-18SAG-7 Datasheet

Current PartRFQ

AP130-18RG-7

Diodes IncorporatedIn Stock: 9330AP130-18RG-7 Datasheet

Parametric EquivalentRFQ

AP130-18WL-7

Diodes IncorporatedIn Stock: 10632AP130-18WL-7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AP130-18SAG-7 is determined by the following criteria:

Electrical Parameters (Must Match):

• Output voltage: 1.8V fixed
• Output current capability: 300mA
• Input voltage maximum: 5.5V
• Quiescent current: 100 µA
• PSRR: 58dB (100Hz)
• Protection features: Over Current, Over Temperature, Short Circuit
• Operating temperature range: -40°C ~ 85°C

Mechanical Parameters (Allowed Variation):

• Package case designation: TO-236-3, SC-59, or SOT-23-3 (all equivalent mechanical footprints)
• Supplier device package: SOT-23-3, SC-59R, or SC-59-3 (variant designations of the same physical package family)
• Packaging format: Tape & Reel (TR) or Cut Tape (CT)

Acceptable Variance:

• Voltage dropout: 0.4V or 0.5V @ 300mA (both within acceptable operating margin)

The AP130-18RG-7 and AP130-18WL-7 meet all electrical requirements and share compatible mechanical packaging within the TO-236/SC-59/SOT-23-3 family, qualifying them as parametric equivalents.

Parameter Comparison

Engineering Selection Recommendations

AP130-18RG-7 (Primary Substitute): This part is the preferred substitute for the AP130-18SAG-7. It maintains active product status, offers improved voltage dropout performance (0.4V versus 0.5V), and provides higher inventory availability (9300 units). The SC-59R package designation represents a variant within the same mechanical footprint family. Both parts are ROHS3 compliant and carry identical MSL ratings. The Tape & Reel packaging format matches the original specification.

AP130-18WL-7 (Secondary Substitute): This part meets all electrical specifications and maintains full compliance certifications (ROHS3, MSL 1). However, it carries an Obsolete product status designation, indicating discontinued production. The Cut Tape packaging format differs from the original Tape & Reel specification, which may impact manufacturing process compatibility. Despite higher inventory availability (10547 units), the obsolete status and packaging format difference make this a secondary option suitable only when AP130-18RG-7 is unavailable and manufacturing processes accommodate Cut Tape format.

Frequently Asked Questions (FAQ)

Q: Can AP130-18RG-7 be used as a direct replacement for AP130-18SAG-7?

A: Yes. Both parts share identical electrical specifications (1.8V output, 300mA current, 5.5V maximum input, 100 µA quiescent current, 58dB PSRR, and identical protection features). The package designations (SOT-23-3 and SC-59R) are mechanically equivalent within the TO-236/SC-59 family. The improved dropout voltage (0.4V) of the AP130-18RG-7 provides additional performance margin.

Q: What is the difference between SOT-23-3 and SC-59R packaging?

A: Both designations refer to the same three-pin surface-mount package family (TO-236). The variant suffixes (SOT-23-3 versus SC-59R) represent different supplier nomenclature for the identical physical package. Pin count, pitch, and PCB footprint are identical.

Q: Why is AP130-18WL-7 marked as Obsolete?

A: The Obsolete status indicates that Diodes Incorporated has discontinued production of this part number. While inventory remains available, future availability cannot be guaranteed. New designs should specify AP130-18SAG-7 or AP130-18RG-7 to ensure long-term supply chain continuity.

Q: Does the Cut Tape (CT) packaging of AP130-18WL-7 affect electrical performance?

A: No. Cut Tape and Tape & Reel formats contain identical components with identical electrical characteristics. The difference is purely in the delivery and handling format. Manufacturing processes that require Tape & Reel format for automated pick-and-place equipment may not be compatible with Cut Tape format.

Q: Are all three parts ROHS3 compliant?

A: Yes. AP130-18SAG-7, AP130-18RG-7, and AP130-18WL-7 are all ROHS3 compliant with MSL rating 1 (Unlimited moisture sensitivity level).

Q: What is the significance of the 0.1V dropout voltage difference between AP130-18RG-7 and the other parts?

A: The AP130-18RG-7 exhibits 0.4V dropout at 300mA, while AP130-18SAG-7 and AP130-18WL-7 exhibit 0.5V dropout. This 0.1V difference represents improved efficiency and reduced heat dissipation in the AP130-18RG-7, making it the preferred choice for power-sensitive applications.