R1114N331B-TR-FE Equivalent & Substitute Parts

Part Overview

The R1114N331B-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 component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining electrical and mechanical compatibility.

Key Parameters

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

Substitute Part Grouping Explanation

Substitute parts for the R1114N331B-TR-FE are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

Output voltage (fixed at 3.3V)
Output current capability (150mA minimum)
Input voltage rating (6V maximum)
Package type (SOT-23-5 / SC-74A surface mount)
Operating temperature range (-40°C to 85°C)
Protection features (overcurrent protection required)

Allowable Variations:

Voltage dropout specification may vary within acceptable design margins
Quiescent current may differ without affecting primary function
PSRR specification may be absent in substitute parts
Control feature availability may differ (Enable feature optional)
RoHS compliance status may differ (both RoHS2 and RoHS3 acceptable)

The R1180N331B-TR-FE and R1180N331C-TR-FE meet all critical matching parameters and are classified as parametric equivalents. Both parts share identical output voltage, current rating, input voltage maximum, package configuration, and operating temperature range.

Parameter Comparison

Parameter	R1114N331B-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
Voltage Dropout (Maximum)	0.35V @ 150mA	0.4V @ 150mA	0.4V @ 150mA
Quiescent Current	95µA	1.5µA	1.5µA
PSRR	70dB ~ 60dB (1kHz ~ 10kHz)	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-753	SC-74A, SOT-753	SC-74A, SOT-753
Supplier Device Package	SOT-23-5	SOT-23-5	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

R1114N331B-TR-FE (Primary Part)

The R1114N331B-TR-FE is the primary specification with 7,800 units in stock. This part features a lower maximum dropout voltage of 0.35V at 150mA and includes PSRR specification of 70dB to 60dB across the 1kHz to 10kHz frequency range. The Enable control feature is explicitly specified. RoHS compliance is confirmed. This part is suitable for applications where noise rejection and precise voltage regulation are critical design requirements.

R1180N331B-TR-FE (Substitute - Preferred)

The R1180N331B-TR-FE is a parametric equivalent with 4,200 units in stock. This part maintains identical output voltage, current rating, input voltage maximum, package configuration, and operating temperature range. The maximum dropout voltage is 0.4V at 150mA, representing a 0.05V increase from the primary part. Quiescent current is significantly lower at 1.5µA compared to 95µA in the primary part. The Enable control feature is specified. ROHS3 compliance is confirmed. This part is suitable for applications where lower quiescent current consumption is beneficial and the slightly higher dropout voltage is acceptable.

R1180N331C-TR-FE (Substitute - Alternative)

The R1180N331C-TR-FE is a parametric equivalent with 3,976 units in stock. This part maintains identical output voltage, current rating, input voltage maximum, package configuration, and operating temperature range. The maximum dropout voltage is 0.4V at 150mA. Quiescent current is 1.5µA. The Enable control feature is not specified for this variant. ROHS3 compliance is confirmed. This part is suitable for applications where the absence of an explicit Enable feature does not impact circuit design and lower quiescent current is advantageous.

All three parts are active products from the same manufacturer with confirmed RoHS compliance and unlimited moisture sensitivity rating. Selection between these parts depends on specific application requirements regarding dropout voltage, quiescent current, and control feature necessity.

Frequently Asked Questions (FAQ)

Q: Can R1180N331B-TR-FE replace R1114N331B-TR-FE in all applications?

A: The R1180N331B-TR-FE is electrically compatible for applications where the maximum dropout voltage of 0.4V is acceptable. The primary difference is the increased dropout voltage of 0.05V and significantly reduced quiescent current of 1.5µA versus 95µA. Both parts share identical output voltage, current rating, input voltage maximum, package type, and operating temperature range. Applications sensitive to dropout voltage performance should evaluate this parameter against circuit requirements.

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

A: Both parts are electrically identical with the same output voltage, current rating, input voltage maximum, dropout voltage, quiescent current, and operating temperature range. The primary difference is that R1180N331B-TR-FE explicitly specifies an Enable control feature, while R1180N331C-TR-FE does not specify this feature. Selection depends on whether the Enable function is required in the circuit design.

Q: Are all three parts in the same package?

A: Yes. All three parts use the SOT-23-5 package (SC-74A, SOT-753) in surface-mount configuration. Pin-to-pin compatibility is confirmed, allowing direct substitution without PCB layout modifications.

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

A: The R1114N331B-TR-FE has a quiescent current of 95µA, while both R1180 variants have 1.5µA. In battery-powered or low-power applications where the regulator operates continuously, the R1180 variants consume significantly less standby current. For applications with continuous operation, this difference may impact overall power consumption and thermal performance.

Q: Are there compliance differences between the substitute parts?

A: The R1114N331B-TR-FE is RoHS Compliant (RoHS2). Both R1180 variants are ROHS3 Compliant. ROHS3 represents a more recent compliance standard. Both compliance levels are acceptable for most applications. The R1180 variants also specify REACH Unaffected status, providing additional regulatory documentation.

Q: Can I use R1180N331C-TR-FE if my circuit requires the Enable function?

A: The R1180N331C-TR-FE does not explicitly specify an Enable control feature. If the circuit design requires this function, R1180N331B-TR-FE or R1114N331B-TR-FE should be used instead. Consult detailed datasheets to confirm functional availability.

Q: What is the maximum input voltage for all three parts?

A: All three parts have a maximum input voltage rating of 6V. Circuit designs must ensure input voltage does not exceed this specification.

Q: Are all three parts actively manufactured?

A: Yes. All three parts have Active product status, confirming ongoing manufacturing and availability from Nisshinbo Micro Devices Inc.

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