BAR43-TP Equivalent & Substitute Parts

Part Overview

The BAR43-TP is a Schottky diode manufactured by Micro Commercial Co, rated for 30 V DC reverse voltage and 200 mA average rectified current in a surface mount SOT-23 package. This component is classified as Active product status and is used in interface applications requiring small signal rectification with fast switching characteristics. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	800 mV @ 100 mA	mV
Reverse Recovery Time (trr)	5	ns
Current - Reverse Leakage @ Vr	500 nA @ 25 V	nA
Technology	Schottky	—
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Operating Temperature - Junction (Max)	150	°C

Substitute Part Grouping Explanation

Substitution of the BAR43-TP is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 30 V
Current - Average Rectified (Io): Must equal or exceed 200 mA
Technology: Schottky diode type
Mounting Type: Surface Mount
Package / Case: Compatible with TO-236-3, SC-59, or SOT-23-3 footprints

Secondary Compatibility Factors:

Reverse Recovery Time (trr): Consistent with small signal switching applications
Operating Temperature - Junction: Must support 150°C or higher
Forward Voltage (Vf): Performance characteristic for circuit operation

Substitute parts identified in this reference meet or exceed the primary substitution criteria, ensuring functional and mechanical compatibility with the BAR43-TP in equivalent circuit applications.

Parameter Comparison

Parameter	BAR43-TP (Main)	BAT54-G3-08	PMEG3010ET,215
Manufacturer	Micro Commercial Co	Vishay General Semiconductor - Diodes Division	Nexperia USA Inc.
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	30 V
Current - Average Rectified (Io)	200 mA	200 mA	1 A
Voltage - Forward (Vf) (Max) @ If	800 mV @ 100 mA	800 mV @ 100 mA	560 mV @ 1 A
Reverse Recovery Time (trr)	5 ns	5 ns	Fast Recovery ≤ 500 ns
Current - Reverse Leakage @ Vr	500 nA @ 25 V	2 µA @ 25 V	150 µA @ 30 V
Technology	Schottky	Schottky	Schottky
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Operating Temperature - Junction (Max)	150°C	125°C	150°C
Product Status	Active	Active	Active

Engineering Selection Recommendations

BAT54-G3-08 (Vishay General Semiconductor - Diodes Division)

The BAT54-G3-08 provides direct electrical equivalence to the BAR43-TP across all primary substitution criteria: 30 V reverse voltage, 200 mA average rectified current, and identical forward voltage characteristics at 100 mA. Both devices feature 5 ns reverse recovery time and are packaged in SOT-23-3. The BAT54-G3-08 carries RoHS3 compliance and MSL 1 rating. The operating temperature maximum of 125°C is lower than the BAR43-TP specification of 150°C; this difference must be evaluated against specific application thermal requirements. This substitute is suitable for direct replacement in equivalent circuit designs.

PMEG3010ET,215 (Nexperia USA Inc.)

The PMEG3010ET,215 exceeds the primary substitution criteria with a 1 A average rectified current rating, compared to the BAR43-TP specification of 200 mA. Both devices share the 30 V reverse voltage rating and SOT-23-3 package compatibility. The PMEG3010ET,215 features improved forward voltage performance at 560 mV @ 1 A and maintains the 150°C operating temperature maximum. This device carries AEC-Q100 automotive qualification, RoHS3 compliance, and MSL 1 rating. The higher current rating provides design margin for applications requiring increased current capacity within the same package footprint. This substitute is suitable for applications where higher current handling or automotive-grade qualification is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the BAT54-G3-08 be used as a direct replacement for the BAR43-TP?

A: Yes. The BAT54-G3-08 meets all primary substitution criteria: 30 V reverse voltage, 200 mA average rectified current, identical forward voltage at 100 mA, and SOT-23-3 package compatibility. The operating temperature maximum of 125°C is lower than the BAR43-TP specification of 150°C and must be verified against application requirements.

Q: What is the primary difference between the BAT54-G3-08 and PMEG3010ET,215?

A: The PMEG3010ET,215 is rated for 1 A average rectified current, exceeding the BAR43-TP and BAT54-G3-08 specification of 200 mA. Both devices share the 30 V reverse voltage rating and SOT-23-3 package. The PMEG3010ET,215 includes AEC-Q100 automotive qualification.

Q: Are all three devices compatible with the same PCB footprint?

A: Yes. The BAR43-TP, BAT54-G3-08, and PMEG3010ET,215 are all packaged in TO-236-3, SC-59, or SOT-23-3 configurations, ensuring mechanical and electrical compatibility with the same surface mount footprint.

Q: What does the reverse leakage current difference indicate?

A: Reverse leakage current varies across the three devices: BAR43-TP at 500 nA @ 25 V, BAT54-G3-08 at 2 µA @ 25 V, and PMEG3010ET,215 at 150 µA @ 30 V. Higher leakage current may impact low-power or high-impedance circuit performance. Application-specific leakage requirements must be evaluated.

Q: Is the PMEG3010ET,215 suitable for non-automotive applications?

A: Yes. The PMEG3010ET,215 is suitable for general-purpose applications. The AEC-Q100 automotive qualification indicates additional reliability testing and is not a restriction on non-automotive use.

Q: What compliance certifications apply to all three devices?

A: All three devices carry REACH Unaffected status and EAR99 ECCN classification. The BAT54-G3-08 and PMEG3010ET,215 are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

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