BSP78 E6327 Equivalent & Substitute Parts

Part Overview

The BSP78 E6327 is an N-Channel power switch/driver IC manufactured by Infineon Technologies, designed for low-side switching applications with a 1:1 input-output ratio. This component operates at a maximum load voltage of 42V with a 3A output current capability and features integrated fault protection including current limiting, over-temperature, and over-voltage protection. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Manufacturer	Infineon Technologies
Category	Power Management (PMIC)
Switch Type	General Purpose
Output Configuration	Low Side
Output Type	N-Channel
Ratio - Input:Output	1:1
Voltage - Load (Max)	42V
Current - Output (Max)	3A
Rds On (Typ)	35mOhm
Operating Temperature	-40°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	TO-261-4, TO-261AA
Fault Protection	Current Limiting (Fixed), Over Temperature, Over Voltage
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the BSP78 E6327 are selected based on the following critical parameters that determine functional compatibility:

Output Configuration & Type: Low side, N-Channel switching
Ratio - Input:Output: 1:1 configuration
Interface: On/Off control
Fault Protection: Current Limiting (Fixed), Over Temperature, Over Voltage
Operating Temperature Range: -40°C ~ 150°C (TJ)
Mounting Type: Surface Mount
Package Compatibility: TO-261-4, TO-261AA footprint

Substitute parts must maintain these core electrical and mechanical characteristics. Variations in maximum load voltage, output current, and on-resistance are acceptable provided the substitute meets or exceeds the application requirements.

Parameter Comparison

Parameter	BSP78 E6327	BSP78HUMA1	BSP75GTA	VNL5050N3TR-E
Manufacturer	Infineon Technologies	Infineon Technologies	Diodes Incorporated	STMicroelectronics
Product Status	Obsolete	Active	Active	Active
Switch Type	General Purpose	General Purpose	General Purpose	General Purpose
Output Configuration	Low Side	Low Side	Low Side	Low Side
Output Type	N-Channel	N-Channel	N-Channel	N-Channel
Ratio - Input:Output	1:1	1:1	1:1	1:1
Voltage - Load (Max)	42V	42V	60V	36V
Current - Output (Max)	3A	3A	1.6A	19A
Rds On (Typ)	35mOhm	35mOhm	550mOhm	50mOhm (Max)
Operating Temperature	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-261-4, TO-261AA	TO-261-4, TO-261AA	TO-261-4, TO-261AA	TO-261-4, TO-261AA
Fault Protection	Current Limiting (Fixed), Over Temperature, Over Voltage	Current Limiting (Fixed), Over Temperature, Over Voltage	Current Limiting (Fixed), Over Temperature, Over Voltage	Current Limiting (Fixed), Over Temperature, Over Voltage
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

BSP78HUMA1 (Infineon Technologies) is the primary parametric equivalent. This part maintains identical electrical specifications to the BSP78 E6327, including 3A output current, 35mOhm on-resistance, and 42V maximum load voltage. The BSP78HUMA1 is active in production with ROHS3 compliance, making it the direct replacement for obsolete BSP78 E6327 applications.

BSP75GTA (Diodes Incorporated) is a manufacturer-recommended substitute with compatible low-side N-Channel 1:1 configuration and identical operating temperature range. This part features higher maximum load voltage (60V) but reduced output current (1.6A) and significantly higher on-resistance (550mOhm). Selection of BSP75GTA is appropriate only for applications where the 1.6A current limit and higher on-resistance are acceptable.

VNL5050N3TR-E (STMicroelectronics) is a manufacturer-recommended substitute offering superior output current capability (19A) and lower on-resistance (50mOhm Max). This part operates at a lower maximum load voltage (36V) and requires supply voltage specification (3.5V ~ 5.5V). Selection of VNL5050N3TR-E is appropriate for applications requiring higher current handling within the 36V load voltage constraint.

Frequently Asked Questions (FAQ)

Q: Can BSP78HUMA1 be used as a direct replacement for BSP78 E6327?

A: Yes. BSP78HUMA1 maintains identical electrical and mechanical specifications, including 3A output current, 35mOhm on-resistance, 42V maximum load voltage, and TO-261-4/TO-261AA package compatibility. The primary difference is product status (active vs. obsolete) and RoHS compliance.

Q: What are the key differences between BSP75GTA and the original BSP78 E6327?

A: BSP75GTA maintains compatible switching configuration and operating temperature range but differs in three parameters: maximum load voltage is increased to 60V, output current is reduced to 1.6A, and on-resistance is significantly higher at 550mOhm. Applications requiring the full 3A output current cannot use BSP75GTA.

Q: When should VNL5050N3TR-E be selected over BSP78HUMA1?

A: VNL5050N3TR-E is selected when applications require output current exceeding 3A, up to 19A maximum. This part is not suitable for applications requiring load voltages above 36V. VNL5050N3TR-E also requires explicit supply voltage specification (3.5V ~ 5.5V), unlike the original part.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts use TO-261-4 or TO-261AA package compatibility, maintaining mechanical interchangeability on existing PCB designs.

Q: What compliance differences exist between the main part and substitutes?

A: BSP78 E6327 is RoHS non-compliant. All three substitute parts (BSP78HUMA1, BSP75GTA, VNL5050N3TR-E) are ROHS3 compliant, meeting current environmental regulations.

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