R1114N331A-TR-FE Equivalent & Substitute Parts

Part Overview

The R1114N331A-TR-FE is a linear voltage regulator IC manufactured by Nisshinbo Micro Devices Inc., classified as a Power Management (PMIC) component. This device delivers a fixed positive 3.3V output at 150mA in a surface-mount SOT-23-5 package. The part is actively produced and widely used in applications requiring low-dropout voltage regulation with integrated enable control and overcurrent protection.

Substitute parts are identified when design requirements change, original part availability becomes limited, or alternative sourcing strategies are implemented. The R1114N331A-TR-FE has documented parametric equivalents within the Nisshinbo product family that maintain functional compatibility while offering different performance characteristics.

Key Parameters

Parameter	Value	Unit
Output Voltage (Fixed)	3.3	V
Output Current	150	mA
Input Voltage (Maximum)	6	V
Dropout Voltage @ 150mA	0.35	V
Quiescent Current	95	µA
PSRR (1kHz ~ 10kHz)	70dB ~ 60dB	dB
Operating Temperature Range	-40 to 85	°C
Package Type	SOT-23-5 (SC-74A)	—
Control Features	Enable	—
Protection Features	Over Current	—

Substitute Part Grouping Explanation

Substitution eligibility for the R1114N331A-TR-FE is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

Output voltage (fixed at 3.3V)
Output current capability (150mA minimum)
Input voltage maximum rating (6V)
Package type (SOT-23-5)
Operating temperature range (-40°C to 85°C)
Protection features (overcurrent protection required)

Allowable Variations:

Dropout voltage: Substitute parts may have higher dropout voltage (0.4V vs. 0.35V) provided the application circuit tolerates this difference
Quiescent current: Substitute parts may have lower quiescent current (1.5µA vs. 95µA), which represents an improvement in standby power consumption
PSRR: Substitute parts may have unspecified PSRR values if noise rejection is not a critical design requirement
Control features: Substitute parts may omit the Enable function if the application does not require this control capability

The R1114N331A-TR-FE substitutes are limited to the R1180 series variants, which maintain full parametric compatibility within the constraints listed above.

Parameter Comparison

Parameter	R1114N331A-TR-FE	R1180N331B-TR-FE	R1180N331C-TR-FE
Manufacturer	Nisshinbo Micro Devices Inc.	Nisshinbo Micro Devices Inc.	Nisshinbo Micro Devices Inc.
Output Voltage (Fixed)	3.3V	3.3V	3.3V
Output Current	150mA	150mA	150mA
Input Voltage (Maximum)	6V	6V	6V
Dropout Voltage @ 150mA	0.35V	0.4V	0.4V
Quiescent Current	95µA	1.5µA	1.5µA
PSRR (1kHz ~ 10kHz)	70dB ~ 60dB	Not Specified	Not Specified
Operating Temperature	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C
Package / Case	SC-74A, SOT-23-5	SC-74A, SOT-23-5	SC-74A, SOT-23-5
Control Features	Enable	Enable	Not Specified
Protection Features	Over Current	Over Current	Over Current
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

R1114N331A-TR-FE (Primary Part)

The R1114N331A-TR-FE remains the primary selection when the following conditions apply:

PSRR performance of 70dB to 60dB (1kHz to 10kHz) is required for noise-sensitive applications
Quiescent current specification of 95µA is acceptable for the application
Enable control functionality is required for power sequencing or shutdown operations
RoHS Compliant certification (non-ROHS3) meets procurement requirements

R1180N331B-TR-FE (Substitute)

The R1180N331B-TR-FE is a direct substitute when:

Lower quiescent current (1.5µA) is beneficial for battery-powered or low-power standby applications
Dropout voltage of 0.4V is acceptable within the circuit design margins
Enable control functionality is required
ROHS3 Compliant certification is required
REACH Unaffected status is required for international compliance

R1180N331C-TR-FE (Substitute)

The R1180N331C-TR-FE is a substitute when:

Lower quiescent current (1.5µA) is beneficial for battery-powered or low-power standby applications
Dropout voltage of 0.4V is acceptable within the circuit design margins
Enable control functionality is not required for the application
ROHS3 Compliant certification is required
REACH Unaffected status is required for international compliance

All three parts are actively produced and available in production quantities. Selection between R1180N331B-TR-FE and R1180N331C-TR-FE depends on whether the Enable control feature is necessary for the specific application circuit.

Frequently Asked Questions (FAQ)

Q: Can R1180N331B-TR-FE or R1180N331C-TR-FE be used as direct drop-in replacements for R1114N331A-TR-FE?

A: Both R1180 variants are pin-compatible and functionally compatible in the SOT-23-5 package. However, the higher dropout voltage (0.4V vs. 0.35V) must be verified against the application's input voltage margin and load regulation requirements. The lower quiescent current of the R1180 series represents an improvement for most applications.

Q: What is the difference between R1180N331B-TR-FE and R1180N331C-TR-FE?

A: The primary difference is the Enable control feature. R1180N331B-TR-FE includes Enable control functionality, while R1180N331C-TR-FE does not specify this feature. Both parts have identical electrical performance (dropout voltage, quiescent current, output current). Selection depends on whether the application requires enable/disable control capability.

Q: Does the PSRR difference between R1114N331A-TR-FE and R1180 variants affect substitution?

A: The R1180 variants do not specify PSRR performance. If the application requires documented PSRR of 70dB to 60dB (1kHz to 10kHz), the R1114N331A-TR-FE must be retained. If PSRR is not a critical design parameter, the R1180 variants are suitable substitutes.

Q: Are all three parts RoHS compliant?

A: Yes. R1114N331A-TR-FE is RoHS Compliant. R1180N331B-TR-FE and R1180N331C-TR-FE are ROHS3 Compliant, which represents a more recent compliance standard. All three parts meet RoHS requirements.

Q: What is the impact of the quiescent current difference?

A: The R1114N331A-TR-FE has a quiescent current of 95µA, while R1180 variants have 1.5µA. In applications with continuous operation or frequent enable/disable cycles, the lower quiescent current of the R1180 series reduces standby power consumption and heat generation. For applications where the regulator is always enabled at full load, this difference has minimal impact.

Q: Can these parts be used interchangeably in production?

A: Interchangeability depends on design specifications. If the design explicitly requires PSRR performance or Enable control, only compatible parts should be used. If the design specifies only output voltage, current, and package type, all three parts are interchangeable. Design documentation should be reviewed to confirm which parameters are critical.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All three parts have MSL 1 (Unlimited), indicating unlimited shelf life and no special moisture handling requirements during storage or assembly.

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