BA63JC5T Linear Voltage Regulator IC Equivalent & Substitute Parts

Part Overview

The BA63JC5T is a linear voltage regulator IC manufactured by Rohm Semiconductor, classified as a Power Management (PMIC) component. This device is a positive fixed output regulator rated for 6.3V at 1.5A in a TO-220-3 package configuration. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity. Equivalent parts must maintain compatibility across output voltage, current rating, thermal characteristics, and mounting configuration.

Key Parameters

Parameter	Value
Manufacturer	Rohm Semiconductor
Category	Power Management (PMIC)
Output Configuration	Positive
Output Type	Fixed
Voltage - Input (Max)	16V
Voltage - Output (Fixed)	6.3V
Current - Output	1.5A
Voltage Dropout (Max)	0.5V @ 500mA
Operating Temperature	-40°C ~ 105°C
Mounting Type	Through Hole
Package / Case	TO-220-3
Protection Features	Over Current, Over Temperature
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the BA63JC5T is determined by the following critical parameters:

Direct Equivalents (Fixed Output, Through-Hole TO-220):

Output voltage within acceptable tolerance of 6.3V
Fixed output type (not adjustable)
Current rating of 1.5A minimum
TO-220-3 package configuration
Through-hole mounting

Functional Alternatives (Adjustable Output, Through-Hole TO-220):

Adjustable output voltage range encompassing 6.3V
Current rating of 1.5A minimum
TO-220 package configuration
Through-hole mounting
Enable control feature for circuit flexibility

Cross-Technology Alternatives (Surface Mount):

Adjustable output voltage range encompassing 6.3V
Current rating of 1.5A minimum
Surface mount package (8-HTSOP-J)
Different mounting methodology requiring PCB redesign

Parameter Comparison

Parameter	BA63JC5T (Main)	BA60JC5T	BA00JC5WT	BD00HC5WEFJ-E2
Manufacturer	Rohm Semiconductor	Rohm Semiconductor	Rohm Semiconductor	Rohm Semiconductor
Product Status	Obsolete	Active	Active	Active
Output Type	Fixed	Fixed	Adjustable	Adjustable
Voltage - Output	6.3V	6V	1.5V - 12V	1.5V - 7V
Voltage - Input (Max)	16V	16V	16V	8V
Current - Output	1.5A	1.5A	1.5A	1.5A
Voltage Dropout (Max)	0.5V @ 500mA	0.5V @ 500mA	0.5V @ 500mA	0.93V @ 1.5A
Current - Quiescent (Iq)	0.5 mA	0.5 mA	130 µA	0.6 mA
PSRR	55dB (120Hz)	55dB (120Hz)	55dB ~ 50dB (120Hz)	Not specified
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-25°C ~ 85°C
Mounting Type	Through Hole	Through Hole	Through Hole	Surface Mount
Package / Case	TO-220-3	TO-220-3	TO-220-5	8-HTSOP-J
Protection Features	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature	Over Current, Over Temperature, Soft Start
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

BA60JC5T is the closest direct equivalent. This part maintains fixed output configuration at 6V, matching the functional intent of the BA63JC5T. The 0.3V output variance (6V vs 6.3V) falls within typical regulator tolerance bands. Both devices share identical current ratings (1.5A), dropout voltage specifications (0.5V @ 500mA), quiescent current (0.5 mA), and operating temperature range (-40°C ~ 105°C). The BA60JC5T is active in production status and ROHS3 compliant, ensuring long-term availability and regulatory compliance. Through-hole TO-220-3 packaging enables direct PCB footprint compatibility without redesign.

BA00JC5WT provides functional substitution with adjustable output voltage (1.5V - 12V range), encompassing the 6.3V requirement. This part introduces design flexibility through output voltage adjustment and Enable control features. The TO-220-5 package requires PCB layout modification due to additional pins. Quiescent current is elevated at 130 µA compared to 0.5 mA in the main part, affecting power consumption in standby conditions. This option is suitable for applications requiring output voltage flexibility or circuit control capabilities.

BD00HC5WEFJ-E2 offers cross-technology substitution with adjustable output voltage (1.5V - 7V range) in surface-mount 8-HTSOP-J packaging. This part requires significant PCB redesign and assembly process changes from through-hole to surface-mount technology. Maximum input voltage is limited to 8V (versus 16V for the main part), restricting input supply flexibility. Operating temperature range is narrower (-25°C ~ 85°C), reducing suitability for extended temperature applications. This option is applicable only when surface-mount integration is already planned or when through-hole alternatives are unavailable.

Frequently Asked Questions (FAQ)

Q: Can BA60JC5T directly replace BA63JC5T without PCB modifications?

A: Yes. Both devices use identical TO-220-3 through-hole packaging with matching pin configurations. The 0.3V output difference (6V vs 6.3V) is within standard regulator tolerance specifications. No PCB layout changes are required.

Q: What is the significance of the output voltage difference between BA63JC5T (6.3V) and BA60JC5T (6V)?

A: The 0.3V variance represents approximately 4.8% deviation. For applications with strict voltage requirements, circuit design must accommodate this tolerance. Most systems designed for 6.3V operation function within acceptable parameters at 6V output, as linear regulators typically operate with ±5% tolerance bands.

Q: Why does BA00JC5WT have higher quiescent current (130 µA vs 0.5 mA)?

A: The BA00JC5WT is an adjustable output regulator with Enable control functionality. The additional circuitry required for output voltage adjustment and control features increases quiescent current consumption. This impacts power efficiency in low-current or standby operating modes.

Q: Is BD00HC5WEFJ-E2 suitable as a direct replacement?

A: No. This part requires surface-mount assembly technology, necessitating complete PCB redesign. The maximum input voltage specification (8V) is significantly lower than the main part (16V), restricting input supply options. Use this part only when surface-mount integration is already planned or when through-hole alternatives are exhausted.

Q: What are the compliance and availability considerations?

A: BA60JC5T and BA00JC5WT are active production parts with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring long-term availability and regulatory compliance. BD00HC5WEFJ-E2 is also active and compliant but requires technology transition. The BA63JC5T is obsolete and should be transitioned to an active equivalent.

Q: Can output voltage be adjusted on BA60JC5T?

A: No. BA60JC5T is a fixed output regulator at 6V. Output voltage adjustment is not possible without external circuitry modifications. For adjustable output requirements, use BA00JC5WT or BD00HC5WEFJ-E2.

Q: What package considerations apply when selecting a substitute?

A: BA63JC5T and BA60JC5T use TO-220-3 packages with identical pinouts, enabling direct substitution. BA00JC5WT uses TO-220-5 packaging with additional control pins, requiring PCB layout modifications. BD00HC5WEFJ-E2 uses 8-HTSOP-J surface-mount packaging, requiring complete assembly process change. Package selection determines PCB compatibility and manufacturing process requirements.

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