BAT54XV2 Equivalent & Substitute Parts

Part Overview

The BAT54XV2 is a Schottky diode rated for 30 V DC reverse voltage and 200 mA average rectified current in a surface mount SOD-523F package. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design and procurement requirements. The BAT54XV2 serves as a small-signal rectifier suitable for applications requiring fast switching characteristics and low forward voltage drop typical of Schottky technology.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io)	200 mA
Voltage - Forward (Vf) (Max) @ If	800 mV @ 100 mA
Reverse Recovery Time (trr)	5 ns
Current - Reverse Leakage @ Vr	2 µA @ 25 V
Capacitance @ Vr, F	10 pF @ 1V, 1MHz
Mounting Type	Surface Mount
Package / Case	SC-79, SOD-523F
Operating Temperature - Junction (Max)	125°C
Technology	Schottky
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the BAT54XV2 is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 30 V
Current - Average Rectified (Io): 200 mA
Mounting Type: Surface Mount
Package / Case: SC-79, SOD-523 or SOD-523F
Technology: Schottky

Secondary Compatibility Factors:

Forward voltage characteristics (Vf @ If)
Reverse leakage current (Ir @ Vr)
Reverse recovery time (trr)
Capacitance @ Vr, F
Operating temperature range
Product status (active vs. obsolete)
RoHS and REACH compliance

Substitute parts are grouped into two categories: direct equivalents with identical electrical specifications and similar parts with comparable performance within the same voltage and current ratings. Parts with different forward voltage or reverse leakage characteristics are listed as similar substitutes, as these variations may affect circuit performance depending on application requirements.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Ir @ Vr	Package	Product Status	Temp Range
BAT54XV2	onsemi	30 V	200 mA	800 mV @ 100 mA	2 µA @ 25 V	SOD-523F	Obsolete	-
BAT54XV2T5G	onsemi	30 V	200 mA	800 mV @ 100 mA	2 µA @ 25 V	SOD-523	Active	-55°C ~ 125°C
NSRLL30XV2T1G	onsemi	30 V	200 mA	600 mV @ 200 mA	1 µA @ 10 V	SOD-523	Active	-55°C ~ 150°C
NSVRB521S30T1G	onsemi	30 V	200 mA	500 mV @ 200 mA	30 µA @ 10 V	SOD-523	Active	-55°C ~ 125°C
RB520S30T1G	onsemi	30 V	200 mA	600 mV @ 200 mA	1 µA @ 10 V	SOD-523	Active	-55°C ~ 150°C
RB520S30T5G	onsemi	30 V	200 mA	600 mV @ 200 mA	1 µA @ 10 V	SOD-523	Active	-55°C ~ 150°C
RB521S30T1G	onsemi	30 V	200 mA	500 mV @ 200 mA	30 µA @ 10 V	SOD-523	Active	-55°C ~ 125°C
RB521S30T5G	onsemi	30 V	200 mA	500 mV @ 200 mA	30 µA @ 10 V	SOD-523	Active	-55°C ~ 125°C
1PS79SB10,115	Nexperia USA Inc.	30 V	200 mA	800 mV @ 100 mA	2 µA @ 25 V	SOD-523	Active	-
1PS79SB31,115	Nexperia USA Inc.	30 V	200 mA	500 mV @ 200 mA	30 µA @ 10 V	SOD-523	Active	-
1PS79SB31,135	Nexperia USA Inc.	30 V	200 mA	500 mV @ 200 mA	30 µA @ 10 V	SOD-523	Active	-

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Substitute):

BAT54XV2T5G is the direct equivalent replacement for the obsolete BAT54XV2. This part maintains identical electrical specifications including forward voltage (800 mV @ 100 mA) and reverse leakage current (2 µA @ 25 V). The BAT54XV2T5G is active in production status and ROHS3 compliant, providing long-term availability and regulatory compliance. The package transitions from SOD-523F to SOD-523, which are mechanically compatible in surface mount applications.

Alternative Equivalents (onsemi Manufacturer):

1PS79SB10,115 from Nexperia USA Inc. provides identical electrical performance to the BAT54XV2 with forward voltage of 800 mV @ 100 mA and reverse leakage of 2 µA @ 25 V. This part is active in production and carries AEC-Q100 automotive qualification, suitable for applications requiring automotive-grade components.

Similar Substitutes with Lower Forward Voltage:

NSRLL30XV2T1G, RB520S30T1G, and RB520S30T5G offer reduced forward voltage (600 mV @ 200 mA) compared to the BAT54XV2 (800 mV @ 100 mA). These parts are suitable for applications where lower forward voltage drop is beneficial for efficiency. Operating temperature range extends to 150°C maximum junction temperature.

Similar Substitutes with Lowest Forward Voltage:

NSVRB521S30T1G, RB521S30T1G, RB521S30T5G, 1PS79SB31,115, and 1PS79SB31,135 provide the lowest forward voltage (500 mV @ 200 mA) among available substitutes. These parts exhibit higher reverse leakage current (30 µA @ 10 V) compared to the BAT54XV2 (2 µA @ 25 V). Selection of these parts requires circuit analysis to confirm acceptable leakage performance.

All substitute parts listed maintain the 30 V reverse voltage rating, 200 mA current rating, and surface mount SOD-523 package compatibility. All parts are ROHS3 compliant and REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can BAT54XV2T5G directly replace BAT54XV2 in existing designs?

A: Yes. BAT54XV2T5G is the direct equivalent with identical electrical specifications. The package change from SOD-523F to SOD-523 is mechanically compatible for surface mount applications. The part is active in production and ROHS3 compliant.

Q: What is the difference between parts with 800 mV forward voltage and 500 mV forward voltage?

A: Forward voltage (Vf) determines the voltage drop across the diode during conduction. Lower forward voltage reduces power dissipation and heat generation. The BAT54XV2 specifies 800 mV @ 100 mA, while RB521 and NSVRB521 series specify 500 mV @ 200 mA. Selection depends on circuit requirements for voltage drop and thermal performance.

Q: Are there differences in reverse leakage current between substitutes?

A: Yes. The BAT54XV2 specifies 2 µA @ 25 V reverse leakage. Parts such as RB521S30T1G and NSVRB521S30T1G specify 30 µA @ 10 V, representing higher leakage. Higher reverse leakage may affect circuit performance in applications sensitive to leakage current, such as precision analog circuits or high-impedance applications.

Q: What is the significance of operating temperature range differences?

A: The BAT54XV2 specifies maximum junction temperature of 125°C. Substitute parts such as NSRLL30XV2T1G, RB520S30T1G, and RB520S30T5G extend maximum junction temperature to 150°C, providing additional thermal margin in high-temperature applications. Selection depends on circuit operating environment and thermal design.

Q: Are all substitute parts available in the same packaging options?

A: The BAT54XV2 is supplied in SOD-523F. Most substitutes are available in SOD-523 package. Both packages are mechanically compatible for surface mount assembly. Packaging options vary by part number: some are supplied in Cut Tape (CT) & Digi-Reel®, others in Tape & Reel (TR). Verify packaging availability with supplier for procurement requirements.

Q: What is the difference between onsemi and Nexperia parts?

A: Both manufacturers produce Schottky diodes meeting the 30 V, 200 mA specifications. onsemi parts include BAT54XV2T5G, NSRLL30XV2T1G, RB520, and RB521 series. Nexperia parts include 1PS79SB10,115 and 1PS79SB31 series. Selection between manufacturers depends on supply chain, qualification requirements, and design preferences. Nexperia 1PS79SB10,115 carries AEC-Q100 automotive qualification.

Q: Can I use a substitute with different forward voltage without circuit modification?

A: Forward voltage affects circuit operation. Lower forward voltage reduces voltage drop and power dissipation. Higher forward voltage increases voltage drop. Circuit analysis is required to confirm acceptable performance with different forward voltage specifications. Applications with tight voltage budgets or precision requirements may require circuit adjustment or validation testing.

Q: What does ROHS3 compliance mean?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive 3 requirements, restricting use of specified hazardous materials including lead, cadmium, and mercury. All active substitute parts listed are ROHS3 compliant, suitable for applications requiring environmental compliance.

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