R1180Q151C-TR-FE Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The R1180Q151C-TR-FE is an active linear voltage regulator IC manufactured by Nisshinbo Micro Devices Inc., classified as a Power Management (PMIC) component. This device functions as a positive fixed output voltage regulator delivering 1.5V at 150mA output current in a surface mount SC-82A (SOT-343) package. The part is RoHS compliant and currently in active production status with 755 units in stock.

Substitute parts are identified when component availability becomes constrained, supply chain disruptions occur, or inventory levels require alternative sourcing while maintaining identical electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Output Voltage (Fixed)	1.5	V
Output Current	150	mA
Input Voltage (Maximum)	6	V
Dropout Voltage (Maximum)	0.9 @ 150mA	V
Quiescent Current	1.5	µA
Operating Temperature Range	-40 to 85	°C
Package Type	SC-82A, SOT-343	—
Mounting Type	Surface Mount	—
Protection Features	Over Current	—
RoHS Compliance	Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the R1180Q151C-TR-FE are identified based on strict parametric equivalence within the R1180x series. The substitution logic is determined by the following critical parameters:

Output Voltage: Fixed at 1.5V (non-negotiable for circuit compatibility)
Output Current Rating: 150mA (defines load capacity)
Input Voltage Maximum: 6V (establishes input range compatibility)
Dropout Voltage: 0.9V @ 150mA (affects minimum input voltage requirement)
Package Configuration: SC-82A, SOT-343 surface mount (ensures PCB layout compatibility)
Quiescent Current: 1.5µA (power consumption specification)
Operating Temperature Range: -40°C to 85°C (thermal operating envelope)
Protection Features: Over Current protection (functional safety requirement)
RoHS Status: Compliant (regulatory requirement)

Parts within the R1180x series that match all these parameters are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Parameter	R1180Q151C-TR-FE (Main)	R1180Q151B-TR-FE (Substitute)	Match Status
Manufacturer	Nisshinbo Micro Devices Inc.	Nisshinbo Micro Devices Inc.	Identical
Category	Power Management (PMIC)	Power Management (PMIC)	Identical
Output Voltage (Fixed)	1.5V	1.5V	Identical
Output Current	150mA	150mA	Identical
Input Voltage (Maximum)	6V	6V	Identical
Dropout Voltage (Maximum)	0.9V @ 150mA	0.9V @ 150mA	Identical
Quiescent Current	1.5µA	1.5µA	Identical
Operating Temperature	-40°C to 85°C	-40°C to 85°C	Identical
Package / Case	SC-82A, SOT-343	SC-82A, SOT-343	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Protection Features	Over Current	Over Current	Identical
RoHS Status	Compliant	Compliant	Identical
Control Features	—	Enable	Substitute has additional feature
Product Status	Active	Active	Identical
Inventory Availability	755 Pcs	15819 Pcs	Substitute has higher availability

Engineering Selection Recommendations

The R1180Q151B-TR-FE is a direct parametric equivalent to the R1180Q151C-TR-FE. Both parts are manufactured by Nisshinbo Micro Devices Inc., share identical electrical specifications, and are housed in the same SC-82A (SOT-343) surface mount package.

Selection Basis:

Both parts maintain active product status with full RoHS compliance
Electrical parameters are identical across all critical specifications: output voltage, current rating, input voltage range, dropout voltage, quiescent current, and operating temperature range
Package and mounting configurations are identical, ensuring direct PCB layout compatibility
Both parts include over current protection
The R1180Q151B-TR-FE includes an Enable control feature not present in the R1180Q151C-TR-FE; this additional functionality does not prevent substitution and may provide enhanced circuit control capability
The R1180Q151B-TR-FE demonstrates significantly higher inventory availability (15819 units versus 755 units), making it suitable for high-volume production requirements

Either part may be selected based on availability, lead time, and circuit control requirements.

Frequently Asked Questions (FAQ)

Q: Can the R1180Q151B-TR-FE replace the R1180Q151C-TR-FE in existing designs?

A: Yes. Both parts are parametric equivalents with identical output voltage (1.5V), output current (150mA), input voltage range (6V maximum), dropout voltage (0.9V @ 150mA), quiescent current (1.5µA), operating temperature range (-40°C to 85°C), and package configuration (SC-82A, SOT-343). Direct substitution is supported without circuit modification.

Q: What is the difference between the R1180Q151C-TR-FE and R1180Q151B-TR-FE?

A: The primary difference is the inclusion of an Enable control feature in the R1180Q151B-TR-FE. All other electrical and mechanical parameters are identical. The R1180Q151B-TR-FE also has higher inventory availability.

Q: Are both parts RoHS compliant?

A: Yes. Both the R1180Q151C-TR-FE and R1180Q151B-TR-FE are RoHS compliant and carry Moisture Sensitivity Level (MSL) 1 (Unlimited) rating.

Q: Do these parts require different PCB layouts?

A: No. Both parts use the identical SC-82A (SOT-343) surface mount package, requiring no PCB layout modifications for substitution.

Q: What protection features are included in both parts?

A: Both parts include over current protection as a standard protection feature.

Q: Can I use the R1180Q151B-TR-FE if my circuit does not require the Enable function?

A: Yes. The Enable control feature in the R1180Q151B-TR-FE is an additional capability. If not utilized in the circuit design, the part functions identically to the R1180Q151C-TR-FE.

Q: What is the maximum input voltage for both parts?

A: The maximum input voltage for both parts is 6V. The dropout voltage is 0.9V at 150mA output current.

Q: Are both parts suitable for -40°C to 85°C operating temperature applications?

A: Yes. Both parts are rated for the identical operating temperature range of -40°C to 85°C.

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