BAT54A_D87Z Equivalent & Substitute Parts

Part Overview

The BAT54A_D87Z is a Schottky diode array manufactured by onsemi, configured as a 1 Pair Common Anode design rated for 30 V DC reverse voltage and 200 mA average rectified current per diode. The device is housed in a SOT-23-3 surface mount package (TO-236-3, SC-59). This part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design requirements and procurement needs.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Anode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io) (per Diode)	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
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the BAT54A_D87Z is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Diode Configuration: 1 Pair Common Anode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 30 V minimum
Current - Average Rectified (Io) (per Diode): 200 mA minimum
Package / Case: TO-236-3, SC-59, SOT-23-3
Mounting Type: Surface Mount

Substitute Categories:

Direct Equivalents maintain all critical parameters identically to the BAT54A_D87Z. These parts are functionally interchangeable with no electrical or mechanical deviations.

Similar Parts maintain the same diode configuration, technology, voltage rating, and package but may have variations in current rating, forward voltage, reverse leakage, or temperature range. These parts are suitable for applications where the specified parameter variations do not exceed design tolerances.

Upgrade Parts from alternative manufacturers provide equivalent or superior electrical performance within the same package footprint, offering enhanced availability and active product status.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max)	Io (per Diode)	Vf (Max) @ If	trr	Ir @ Vr	Tj (Operating)	Package	RoHS Status
BAT54A_D87Z	onsemi	Obsolete	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55°C ~ 150°C	SOT-23-3	Not Specified
SBAT54ALT1G	onsemi	Active	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55°C ~ 150°C	SOT-23-3	ROHS3 Compliant
SBAT54ALT3G	onsemi	Active	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55°C ~ 150°C	SOT-23-3	ROHS3 Compliant
BAT54ALT1G	onsemi	Active	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55°C ~ 150°C	SOT-23-3	ROHS3 Compliant
BAT5406E6327HTSA1	Infineon Technologies	Active	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55°C ~ 150°C	SOT-23-3	ROHS3 Compliant
BAT54A-7-F	Diodes Incorporated	Active	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-65°C ~ 150°C	SOT-23-3	ROHS3 Compliant
BAT54ATA	Diodes Incorporated	Active	30 V	200 mA	1 V @ 100 mA	5 ns	4 µA @ 25 V	-55°C ~ 125°C	SOT-23-3	ROHS3 Compliant
BAR43A-TP	Micro Commercial Co	Active	30 V	200 mA	800 mV @ 100 mA	5 ns	500 nA @ 25 V	-55°C ~ 150°C	SOT-23-3	Not Specified
BAR43AFILM	STMicroelectronics	Active	30 V	100 mA	1 V @ 100 mA	5 ns	500 nA @ 30 V	-55°C ~ 150°C	SOT-23-3	ROHS3 Compliant
BAR46AFILM	STMicroelectronics	Active	100 V	150 mA	450 mV @ 10 mA	Not Specified	5 µA @ 75 V	-55°C ~ 150°C	SOT-23-3	ROHS3 Compliant
BAS4006E6327HTSA1	Infineon Technologies	Active	40 V	120 mA	1 V @ 40 mA	100 ps	1 µA @ 30 V	-55°C ~ 150°C	SOT-23-3	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent Selection:

SBAT54ALT1G, SBAT54ALT3G, and BAT54ALT1G from onsemi are direct functional equivalents to the BAT54A_D87Z. All three parts maintain identical electrical specifications including 30 V reverse voltage, 200 mA current rating, 800 mV forward voltage, and 5 ns reverse recovery time. These parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating. Selection among these three is determined by packaging preference: SBAT54ALT1G and SBAT54ALT3G are supplied in Tape & Reel format, while BAT54ALT1G is available in Cut Tape & Digi-Reel format.

Cross-Manufacturer Equivalents:

BAT5406E6327HTSA1 (Infineon Technologies) and BAT54A-7-F (Diodes Incorporated) provide equivalent electrical performance to the BAT54A_D87Z within the same SOT-23-3 package. Both maintain the 30 V / 200 mA specifications and 5 ns reverse recovery time. BAT54A-7-F offers an extended lower operating temperature limit of -65°C compared to -55°C of the original part. Both are active products with ROHS3 compliance.

Similar Parts with Parameter Variations:

BAT54ATA (Diodes Incorporated) maintains the 30 V / 200 mA core specifications but exhibits higher forward voltage (1 V @ 100 mA versus 800 mV) and higher reverse leakage (4 µA @ 25 V versus 2 µA). The maximum operating temperature is limited to 125°C. This part is suitable for applications where these parameter variations are within design tolerance.

BAR43A-TP (Micro Commercial Co) and BAR43AFILM (STMicroelectronics) maintain 30 V reverse voltage and SOT-23-3 packaging. BAR43A-TP supports the full 200 mA current rating with 800 mV forward voltage. BAR43AFILM is rated for 100 mA current, making it unsuitable for applications requiring the full 200 mA specification.

Higher Voltage Alternatives:

BAR46AFILM (STMicroelectronics) provides 100 V reverse voltage rating in the same SOT-23-3 package but with reduced current capacity (150 mA) and different forward voltage characteristics. This part is suitable only for applications where higher voltage rating is required and reduced current capacity is acceptable.

BAS4006E6327HTSA1 (Infineon Technologies) offers 40 V reverse voltage with 120 mA current rating. This part is suitable for applications requiring higher voltage margin but with reduced current capacity.

Frequently Asked Questions (FAQ)

Q: Can SBAT54ALT1G, SBAT54ALT3G, and BAT54ALT1G be used interchangeably with BAT54A_D87Z?

A: Yes. These three onsemi parts are direct electrical and mechanical equivalents. All maintain identical 30 V reverse voltage, 200 mA current rating, 800 mV forward voltage at 100 mA, and 5 ns reverse recovery time. The differences are packaging format (Tape & Reel versus Cut Tape & Digi-Reel) and compliance certifications. Selection depends on procurement and assembly requirements.

Q: What is the difference between BAT5406E6327HTSA1 and BAT54A_D87Z?

A: Both parts maintain identical electrical specifications: 30 V reverse voltage, 200 mA current rating, 800 mV forward voltage, and 5 ns reverse recovery time. The primary difference is manufacturer (Infineon Technologies versus onsemi) and package designation (PG-SOT23 versus SOT-23-3). Both are active products with ROHS3 compliance. Electrical performance is equivalent.

Q: Why is BAR43AFILM not a suitable substitute for BAT54A_D87Z?

A: BAR43AFILM is rated for 100 mA average rectified current per diode, which is insufficient for applications requiring the full 200 mA specification of BAT54A_D87Z. While the reverse voltage (30 V) and package (SOT-23-3) are compatible, the reduced current capacity makes this part unsuitable for designs dependent on 200 mA operation.

Q: Can BAR46AFILM replace BAT54A_D87Z in all applications?

A: No. BAR46AFILM has a 100 V reverse voltage rating and 150 mA current capacity. While the higher voltage rating provides design margin, the reduced current capacity (150 mA versus 200 mA) makes this part unsuitable for applications requiring the full 200 mA specification. Use BAR46AFILM only when higher voltage rating is a design requirement and reduced current capacity is acceptable.

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

A: Operating temperature range defines the junction temperature limits within which the device maintains specified electrical characteristics. BAT54A-7-F extends the lower limit to -65°C compared to -55°C for most other parts. BAT54ATA limits the upper temperature to 125°C versus 150°C for other parts. Select based on application thermal requirements. Exceeding specified temperature limits may result in parameter drift or device failure.

Q: Are all substitute parts ROHS3 compliant?

A: Most active substitute parts listed are ROHS3 compliant. BAT54A_D87Z (obsolete) and BAR43A-TP do not specify RoHS status. For applications requiring ROHS3 compliance, select from SBAT54ALT1G, SBAT54ALT3G, BAT54ALT1G, BAT5406E6327HTSA1, BAT54A-7-F, BAT54ATA, BAR43AFILM, BAR46AFILM, or BAS4006E6327HTSA1.

Q: What packaging options are available for direct equivalents?

A: Direct equivalents are available in two packaging formats: Tape & Reel (SBAT54ALT1G, SBAT54ALT3G) and Cut Tape & Digi-Reel (BAT54ALT1G). Both formats contain the same SOT-23-3 component. Selection depends on assembly equipment compatibility and procurement volume requirements.

Q: How do reverse leakage current differences affect part selection?

A: Reverse leakage current (Ir) represents the small current flowing through the diode in reverse bias condition. BAT54A_D87Z specifies 2 µA @ 25 V. BAR43A-TP and BAR43AFILM specify 500 nA, which is lower. BAT54ATA specifies 4 µA, which is higher. For applications sensitive to leakage current (such as precision analog circuits), select parts with leakage specifications matching design requirements.

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