RT9183-12GGF Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The RT9183-12GGF is an active linear voltage regulator IC manufactured by Richtek USA Inc., classified as a Power Management (PMIC) component. This device provides a fixed positive output of 1.2V at 1.5A in a surface-mount SOT-223F package. The regulator is designed for applications requiring stable low-voltage power delivery with integrated over-current and over-temperature protection. As an active product with ROHS3 compliance and established supply availability, equivalent substitute parts are identified to support procurement flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Manufacturer	Richtek USA Inc.
Part Number	RT9183-12GGF
Category	Power Management (PMIC)
Output Configuration	Positive Fixed
Output Voltage	1.2V
Output Current	1.5A
Input Voltage (Max)	5.5V
Voltage Dropout (Max)	0.5V @ 1.5A
Quiescent Current	500 µA
Protection Features	Over Current, Over Temperature
Operating Temperature	-40°C ~ 125°C
Package Type	SOT-223F (TO-261-4, TO-261AA)
Mounting Type	Surface Mount
Product Status	Active
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitute parts for the RT9183-12GGF are identified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Fixed positive output voltage of 1.2V
Output current rating of 1.5A
Maximum input voltage of 5.5V
Surface-mount SOT-223 package compatibility
Integrated over-current and over-temperature protection
Active product status with current manufacturing availability
ROHS3 compliance and REACH unaffected status

The AP7363-12E-13 manufactured by Diodes Incorporated meets all core electrical specifications and package requirements, establishing it as a direct functional equivalent for the RT9183-12GGF in applications where the specified parameters are required.

Parameter Comparison

Parameter	RT9183-12GGF (Richtek)	AP7363-12E-13 (Diodes)
Output Voltage	1.2V Fixed	1.2V Fixed
Output Current	1.5A	1.5A
Input Voltage (Max)	5.5V	5.5V
Voltage Dropout (Max)	0.5V @ 1.5A	0.24V @ 1.5A
Quiescent Current	500 µA	1.2 mA
PSRR	Not specified	65dB ~ 61dB (120Hz ~ 1kHz)
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature
Operating Temperature	-40°C ~ 125°C	-40°C ~ 85°C
Package Type	SOT-223F	SOT-223-3
Mounting Type	Surface Mount	Surface Mount
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	1 (Unlimited)

Engineering Selection Recommendations

Both the RT9183-12GGF and AP7363-12E-13 are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. Selection between these parts should be based on application-specific requirements:

The RT9183-12GGF supports an extended operating temperature range of -40°C to 125°C, making it suitable for applications requiring higher temperature operation. The AP7363-12E-13 operates within -40°C to 85°C and features improved voltage dropout characteristics (0.24V versus 0.5V at 1.5A), which may reduce thermal dissipation in power-constrained applications.

The AP7363-12E-13 provides specified PSRR performance (65dB ~ 61dB at 120Hz ~ 1kHz) and carries a lower MSL rating (1 versus 3), indicating superior moisture resistance during storage and handling. The RT9183-12GGF exhibits lower quiescent current (500 µA versus 1.2 mA), which may be advantageous in battery-powered or standby-mode applications.

Both parts are available in compatible SOT-223 surface-mount packages and maintain identical output voltage and current specifications, supporting direct functional substitution in circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the AP7363-12E-13 be used as a direct replacement for the RT9183-12GGF?

A: Yes, the AP7363-12E-13 is functionally equivalent for applications requiring a 1.2V, 1.5A fixed positive output regulator. Both parts share identical output voltage, output current, maximum input voltage, and protection features. Substitution is valid provided the application operating temperature does not exceed 85°C and the improved dropout voltage does not create thermal or efficiency concerns.

Q: What are the key differences between these two parts?

A: The primary differences are operating temperature range (RT9183-12GGF: -40°C to 125°C; AP7363-12E-13: -40°C to 85°C), voltage dropout (RT9183-12GGF: 0.5V; AP7363-12E-13: 0.24V), quiescent current (RT9183-12GGF: 500 µA; AP7363-12E-13: 1.2 mA), and MSL rating (RT9183-12GGF: 3; AP7363-12E-13: 1). The AP7363-12E-13 also provides specified PSRR performance.

Q: Are the package types compatible?

A: Both parts use SOT-223 surface-mount packages (RT9183-12GGF: SOT-223F; AP7363-12E-13: SOT-223-3). These packages are mechanically and electrically compatible for PCB assembly, supporting direct footprint substitution.

Q: Which part should I select for high-temperature applications?

A: The RT9183-12GGF supports operation up to 125°C and is the appropriate choice for applications requiring extended temperature performance beyond 85°C.

Q: Which part is better for low-power or battery-powered applications?

A: The RT9183-12GGF features lower quiescent current (500 µA versus 1.2 mA), making it more suitable for applications where standby power consumption is a critical design parameter.

Q: Are both parts RoHS compliant?

A: Yes, both the RT9183-12GGF and AP7363-12E-13 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component procurement.

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