BAT54S_ND87Z Equivalent & Substitute Parts

Part Overview

The BAT54S_ND87Z is a Schottky diode array in a 1 Pair Series Connection configuration manufactured by onsemi. This component is rated for 30 V DC reverse voltage with 200 mA average rectified current per diode and features a maximum forward voltage of 800 mV at 100 mA. The part is packaged in TO-236-3 (SOT-23-3) surface mount format with a 5 ns reverse recovery time.

The BAT54S_ND87Z is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and legacy system support.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Series Connection	—
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 to 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 BAT54S_ND87Z is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Diode Configuration: 1 Pair Series Connection
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
Package / Case: TO-236-3, SC-59, SOT-23-3
Mounting Type: Surface Mount

Acceptable Variation Parameters:

Operating Temperature - Junction: May extend beyond the original -55°C to 150°C range
Product Status: Active status preferred for ongoing availability
Manufacturer: Different manufacturers acceptable if all electrical and mechanical parameters match

Substitute parts are grouped into three categories based on their relationship to the original part:

Direct Substitutes: Parts with identical electrical specifications and active product status from the same or equivalent manufacturers.

Similar Substitutes: Parts meeting all mandatory electrical parameters with minor variations in secondary specifications (such as reverse leakage current or maximum junction temperature).

Upgrade Substitutes: Parts with identical or superior electrical specifications and active product status, offering improved availability or extended temperature ranges.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	trr	Reverse Leakage @ Vr	Tj (Operating)	Package	Product Status
BAT54S_ND87Z	onsemi	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55 to 150°C	TO-236-3, SOT-23-3	Obsolete
SBAT54SLT1G	onsemi	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55 to 150°C	TO-236-3, SOT-23-3	Active
BAT54SLT1G	onsemi	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55 to 125°C	TO-236-3, SOT-23-3	Active
MMBD452LT1G	onsemi	30 V	200 mA	—	5 ns	—	-55 to 125°C	TO-236-3, SOT-23-3	Active
BAT5404E6327HTSA1	Infineon Technologies	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55 to 150°C	TO-236-3, SOT-23-3	Active
BAT54S-7-F	Diodes Incorporated	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-65 to 150°C	TO-236-3, SOT-23-3	Active
BAT54STA	Diodes Incorporated	30 V	200 mA	1 V @ 100 mA	5 ns	4 µA @ 25 V	-55 to 125°C	TO-236-3, SOT-23-3	Active
BAR43S-TP	Micro Commercial Co	30 V	200 mA	800 mV @ 100 mA	5 ns	500 nA @ 25 V	-55 to 150°C	TO-236-3, SOT-23-3	Active
BAT5404WH6327XTSA1	Infineon Technologies	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55 to 150°C	SC-70, SOT-323	Active
BAT54S,235	Nexperia USA Inc.	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55 to 150°C	TO-236-3, SOT-23-3	Active
BAT54S-E3-08	Vishay General Semiconductor - Diodes Division	30 V	200 mA	800 mV @ 100 mA	5 ns	2 µA @ 25 V	-55 to 125°C	TO-236-3, SOT-23-3	Active

Engineering Selection Recommendations

Direct Substitutes (Highest Compatibility):

SBAT54SLT1G (onsemi) is the primary direct substitute. This part maintains identical electrical specifications to the BAT54S_ND87Z across all critical parameters and is manufactured by the same supplier. The part carries active product status with ROHS3 compliance and automotive-grade qualification, ensuring long-term availability and supply chain stability.

BAT54SLT1G (onsemi) is a secondary direct substitute from the same manufacturer. This part matches all electrical specifications with the exception of a reduced maximum junction temperature (125°C versus 150°C). This part is suitable for applications where the operating temperature does not exceed 125°C.

Upgrade Substitutes (Extended Capability):

BAT5404E6327HTSA1 (Infineon Technologies) provides identical electrical specifications with active product status and ROHS3 compliance. This part extends availability through an alternative manufacturer while maintaining full electrical equivalence.

BAT54S-7-F (Diodes Incorporated) offers identical electrical specifications with an extended operating temperature range (-65°C to 150°C) compared to the original part (-55°C to 150°C). This part is suitable for applications requiring enhanced low-temperature performance.

BAT54S,235 (Nexperia USA Inc.) provides identical electrical specifications with automotive-grade qualification and AEC-Q101 certification. This part is suitable for automotive applications requiring formal qualification documentation.

Similar Substitutes (Acceptable Variations):

MMBD452LT1G (onsemi) meets the core electrical requirements with identical reverse voltage, current rating, and reverse recovery time. Forward voltage and reverse leakage specifications are not provided in the available data. This part is suitable for applications where these secondary parameters are not critical.

BAT54STA (Diodes Incorporated) meets the core electrical requirements with minor variations: forward voltage is specified at 1 V @ 100 mA (versus 800 mV) and reverse leakage is 4 µA @ 25 V (versus 2 µA). Maximum junction temperature is 125°C. This part is suitable for applications tolerant of these parameter variations.

BAR43S-TP (Micro Commercial Co) meets all electrical specifications with superior reverse leakage performance (500 nA @ 25 V versus 2 µA). This part is suitable for applications requiring lower leakage current.

Package Variant:

BAT5404WH6327XTSA1 (Infineon Technologies) provides identical electrical specifications but in SC-70 (SOT-323) package instead of TO-236-3 (SOT-23-3). This part is suitable only for designs that accommodate the smaller SOT-323 footprint.

Frequently Asked Questions (FAQ)

Q: Can I use SBAT54SLT1G as a direct replacement for BAT54S_ND87Z?

A: Yes. SBAT54SLT1G is manufactured by onsemi and maintains identical electrical specifications across all critical parameters: 30 V reverse voltage, 200 mA current rating, 800 mV forward voltage at 100 mA, 5 ns reverse recovery time, and 2 µA reverse leakage at 25 V. Both parts use the TO-236-3 (SOT-23-3) package. SBAT54SLT1G carries active product status, ensuring ongoing availability.

Q: What is the difference between BAT54SLT1G and SBAT54SLT1G?

A: Both parts are manufactured by onsemi and share identical electrical specifications. SBAT54SLT1G carries automotive-grade qualification, while BAT54SLT1G does not. The maximum junction temperature for BAT54SLT1G is 125°C, compared to 150°C for SBAT54SLT1G. Select SBAT54SLT1G for automotive applications or designs requiring the full 150°C operating range.

Q: Can I use BAT54STA as a substitute if forward voltage is not critical to my application?

A: BAT54STA meets the core electrical requirements with reverse voltage, current rating, and reverse recovery time identical to the BAT54S_ND87Z. However, forward voltage is specified at 1 V @ 100 mA (versus 800 mV) and reverse leakage is 4 µA @ 25 V (versus 2 µA). Use BAT54STA only in applications where these parameter variations do not affect circuit performance.

Q: Is BAT5404WH6327XTSA1 compatible with my existing PCB layout?

A: BAT5404WH6327XTSA1 is packaged in SC-70 (SOT-323), which is smaller than the TO-236-3 (SOT-23-3) package used by the BAT54S_ND87Z. This part is not compatible with existing PCB layouts designed for TO-236-3 footprints. Use this part only if your PCB design accommodates SOT-323 package dimensions.

Q: Which substitute offers the best low-temperature performance?

A: BAT54S-7-F (Diodes Incorporated) extends the operating temperature range to -65°C, compared to -55°C for the BAT54S_ND87Z. All other electrical specifications remain identical. Select this part for applications requiring enhanced low-temperature operation.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed carry RoHS3 compliance status. All parts also maintain REACH Unaffected status and EAR99 export classification, matching the regulatory profile of the original BAT54S_ND87Z.

Q: Which substitute is recommended for automotive applications?

A: BAT54S,235 (Nexperia USA Inc.) carries automotive-grade qualification and AEC-Q101 certification. SBAT54SLT1G (onsemi) also carries automotive-grade qualification. Both parts are suitable for automotive applications requiring formal qualification documentation.

Q: Can I use MMBD452LT1G if forward voltage specifications are not available?

A: MMBD452LT1G meets the core electrical requirements with identical reverse voltage, current rating, and reverse recovery time. However, forward voltage and reverse leakage specifications are not provided in the available data. Use this part only if your application does not depend on these secondary parameters or if you obtain complete specifications from the manufacturer.

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