BAT54QCZ Equivalent & Substitute Parts

Part Overview

The BAT54QCZ is a Schottky diode manufactured by Nexperia USA Inc., rated for 30 V DC reverse voltage and 200 mA average rectified current. This component is packaged in a 3-XDFN Exposed Pad surface mount configuration with wettable flank technology. The BAT54QCZ is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity. Active alternatives from the same manufacturer base product family (BAT54) are available with identical electrical performance characteristics.

Key Parameters

Parameter	Value
Technology	Schottky
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 @ 1 V, 1 MHz
Operating Temperature - Junction	150°C
Mounting Type	Surface Mount, Wettable Flank
Package / Case	3-XDFN Exposed Pad
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the BAT54QCZ is determined by electrical parameter equivalence and package compatibility. The primary substitution criteria are:

Electrical Parameters (Must Match):

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 @ 1 V, 1 MHz
Operating Temperature - Junction: 150°C

Package Compatibility:

Mounting Type: Surface Mount, Wettable Flank
Package / Case: 3-XDFN Exposed Pad

The BAT54QCZ has two active substitute parts available from Nexperia USA Inc. Both substitutes maintain full electrical equivalence and are qualified to AEC-Q100 automotive standards with active product status.

Parameter Comparison

Parameter	BAT54QCZ (Main)	BAT54QC-QZ (Substitute)	BAT54QB-QZ (Substitute)
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.
Technology	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	30 V
Current - Average Rectified (Io)	200 mA	200 mA	200 mA
Voltage - Forward (Vf) (Max) @ If	800 mV @ 100 mA	800 mV @ 100 mA	800 mV @ 100 mA
Reverse Recovery Time (trr)	5 ns	5 ns	5 ns
Current - Reverse Leakage @ Vr	2 µA @ 25 V	2 µA @ 25 V	2 µA @ 25 V
Capacitance @ Vr, F	10 pF @ 1 V, 1 MHz	10 pF @ 1 V, 1 MHz	10 pF @ 1 V, 1 MHz
Operating Temperature - Junction	150°C	150°C	150°C
Mounting Type	Surface Mount, Wettable Flank	Surface Mount, Wettable Flank	Surface Mount, Wettable Flank
Package / Case	3-XDFN Exposed Pad	3-XDFN Exposed Pad	3-XDFN Exposed Pad
Supplier Device Package	DFN1412D-3	DFN1412D-3	DFN1110D-3
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Grade	Not specified	Automotive	Automotive
Qualification	Not specified	AEC-Q100	AEC-Q100

Engineering Selection Recommendations

BAT54QC-QZ is the primary recommended substitute for BAT54QCZ. This part maintains identical electrical specifications and package configuration (DFN1412D-3). The BAT54QC-QZ is actively manufactured, carries AEC-Q100 automotive qualification, and is ROHS3 compliant. The transition from obsolete to active product status ensures long-term supply chain availability. Moisture sensitivity level increases from MSL 1 to MSL 3 (168 Hours), which requires standard moisture control during storage and handling.

BAT54QB-QZ is a parametric equivalent substitute with identical electrical performance. This part differs in supplier device package designation (DFN1110D-3 versus DFN1412D-3), indicating a different physical footprint size within the 3-XDFN Exposed Pad family. The BAT54QB-QZ is actively manufactured with AEC-Q100 automotive qualification and ROHS3 compliance. Selection of this part requires PCB layout verification to confirm footprint compatibility with the original design.

Both substitutes are available in Tape & Reel (TR) packaging format, suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can BAT54QC-QZ be used as a direct replacement for BAT54QCZ?

A: Yes. The BAT54QC-QZ maintains identical electrical parameters and package designation (DFN1412D-3). No circuit redesign is required. The primary difference is product status transition from obsolete to active, with increased moisture sensitivity level requiring standard handling procedures.

Q: What is the difference between BAT54QC-QZ and BAT54QB-QZ?

A: Both parts are electrically equivalent with identical Schottky diode specifications (30 V, 200 mA, 5 ns recovery time). The difference is in the supplier device package: BAT54QC-QZ uses DFN1412D-3 while BAT54QB-QZ uses DFN1110D-3. Both are 3-XDFN Exposed Pad packages but with different physical dimensions. PCB footprint compatibility must be verified before selection.

Q: Are the substitute parts automotive qualified?

A: Yes. Both BAT54QC-QZ and BAT54QB-QZ carry AEC-Q100 qualification and automotive grade designation, making them suitable for automotive applications.

Q: What is the impact of MSL 3 (168 Hours) on component handling?

A: MSL 3 indicates the component can be exposed to moisture for up to 168 hours at specified temperature and humidity conditions before soldering. Standard moisture control procedures during storage and handling are required. This is more restrictive than the original BAT54QCZ (MSL 1, Unlimited) and requires adherence to IPC-A-610 moisture management guidelines.

Q: Can BAT54QB-QZ be used if the PCB footprint is designed for DFN1412D-3?

A: No. The DFN1110D-3 package has different physical dimensions than DFN1412D-3. PCB layout modification is required if BAT54QB-QZ is selected. BAT54QC-QZ is the direct footprint-compatible substitute.

Q: Are all three parts ROHS3 compliant?

A: Yes. BAT54QCZ, BAT54QC-QZ, and BAT54QB-QZ are all ROHS3 compliant and REACH unaffected.

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