BAT54-D87Z Equivalent & Substitute Parts

Part Overview

The BAT54-D87Z is a Schottky diode manufactured by onsemi, rated for 30V DC reverse voltage and 200mA average rectified current in a surface mount SOT-23-3 package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity. Active alternatives with identical or superior electrical characteristics are available from multiple manufacturers including onsemi, Diodes Incorporated, Infineon Technologies, Nexperia USA Inc., Vishay General Semiconductor, and Micro Commercial Co.

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 @ mA
Reverse Recovery Time (trr)	5	ns
Current - Reverse Leakage @ Vr	2	µA @ 25 V
Capacitance @ Vr, F	10	pF @ 1V, 1MHz
Technology	Schottky	—
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Operating Temperature - Junction	-55°C ~ 150°C	°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BAT54-D87Z is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Parameters:

Voltage - DC Reverse (Vr) (Max): 30V minimum
Current - Average Rectified (Io): 200mA minimum
Voltage - Forward (Vf) (Max) @ If: 800mV @ 100mA maximum
Reverse Recovery Time (trr): 5ns maximum
Current - Reverse Leakage @ Vr: 2µA @ 25V maximum
Capacitance @ Vr, F: 10pF @ 1V, 1MHz maximum
Technology: Schottky
Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3 compatible

Substitute parts are grouped into three categories:

Similar Manufacturer Parts (Direct Equivalents): Parts meeting all critical parameters with identical electrical specifications and active product status.

Parametric Equivalent Parts: Parts meeting all critical parameters with active product status and enhanced operating temperature ranges or improved availability.

Upgrade Parts: Parts meeting or exceeding all critical parameters with active product status, additional certifications (such as AEC-Q101 automotive qualification), or superior electrical characteristics.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) @ If [mV @ mA]	trr [ns]	Ir @ Vr [µA @ V]	C @ Vr [pF @ V, MHz]	Tj (Max) [°C]	Product Status	RoHS Status
BAT54-D87Z	onsemi	30	200	800 @ 100	5	2 @ 25	10 @ 1, 1MHz	150	Obsolete	—
NSVBAT54LT1G	onsemi	30	200	800 @ 100	5	2 @ 25	10 @ 1, 1MHz	125	Active	ROHS3 Compliant
BAT54LT1G	onsemi	30	200	800 @ 100	5	2 @ 25	10 @ 1, 1MHz	150	Active	ROHS3 Compliant
BAT54-7-F	Diodes Incorporated	30	200	800 @ 100	5	2 @ 25	10 @ 1, 1MHz	150	Active	ROHS3 Compliant
BAT54E6327HTSA1	Infineon Technologies	30	200	800 @ 100	5	2 @ 25	10 @ 1, 1MHz	150	Active	ROHS3 Compliant
BAT54Q-13	Diodes Incorporated	30	200	800 @ 100	5	2 @ 25	10 @ 1, 1MHz	150	Active	ROHS3 Compliant
BAT54TA	Diodes Incorporated	30	200	400 @ 10	5	4 @ 25	7.5 @ 1, 1MHz	125	Active	ROHS3 Compliant
BAR43-TP	Micro Commercial Co	30	200	800 @ 100	5	0.5 @ 25	—	150	Active	—
BAT54,215	Nexperia USA Inc.	30	200	800 @ 100	5	2 @ 25	10 @ 1, 1MHz	150	Active	ROHS3 Compliant
BAT54,235	Nexperia USA Inc.	30	200	800 @ 100	5	2 @ 25	10 @ 1, 1MHz	150	Active	ROHS3 Compliant
BAT54-E3-08	Vishay General Semiconductor - Diodes Division	30	200	800 @ 100	5	2 @ 25	10 @ 1, 1MHz	125	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement with Maximum Compatibility: BAT54LT1G (onsemi) and BAT54,215 (Nexperia USA Inc.) provide full parametric equivalence to the BAT54-D87Z with active product status and ROHS3 compliance. Both maintain the 150°C maximum junction temperature and identical electrical specifications across all critical parameters.

For High-Volume Production with Enhanced Availability: BAT54,235 (Nexperia USA Inc.) offers the same electrical and thermal specifications as BAT54-D87Z with significantly higher inventory levels (59,264 units) and Tape & Reel packaging suitable for automated assembly.

For Automotive and Reliability-Critical Applications: BAT54Q-13 (Diodes Incorporated) includes AEC-Q101 automotive qualification and meets all electrical parameters of the BAT54-D87Z with active product status and ROHS3 compliance.

For Superior Reverse Leakage Performance: BAR43-TP (Micro Commercial Co) provides lower reverse leakage current (0.5µA @ 25V versus 2µA @ 25V) while maintaining all other critical electrical specifications.

For Alternative Manufacturer Sourcing: BAT54-7-F (Diodes Incorporated) and BAT54E6327HTSA1 (Infineon Technologies) provide full parametric equivalence with active product status and ROHS3 compliance, enabling supply chain diversification.

Parts with Reduced Operating Temperature Range: NSVBAT54LT1G (onsemi), BAT54TA (Diodes Incorporated), and BAT54-E3-08 (Vishay General Semiconductor) operate to 125°C maximum junction temperature. These are suitable for applications where the full 150°C range is not required.

Note on BAT54TA: This part exhibits different forward voltage characteristics (400mV @ 10mA versus 800mV @ 100mA) and higher reverse leakage (4µA @ 25V versus 2µA @ 25V). Selection requires verification that these parameters are acceptable for the specific application circuit.

Frequently Asked Questions (FAQ)

Q: Can BAT54LT1G directly replace BAT54-D87Z in existing designs?

A: Yes. BAT54LT1G meets all critical electrical parameters of BAT54-D87Z: 30V reverse voltage, 200mA current rating, 800mV forward voltage @ 100mA, 5ns reverse recovery time, 2µA reverse leakage @ 25V, and 10pF capacitance @ 1V, 1MHz. Both use identical SOT-23-3 packaging. The primary difference is product status (active versus obsolete) and ROHS3 compliance certification.

Q: What is the difference between BAT54,215 and BAT54,235?

A: Both are manufactured by Nexperia USA Inc. and provide identical electrical specifications and thermal ratings. The primary difference is packaging: BAT54,215 is supplied in Cut Tape (CT) & Digi-Reel format with 546,150 units in stock, while BAT54,235 is supplied in Tape & Reel (TR) format with 59,264 units in stock. Selection depends on assembly process requirements and inventory availability.

Q: Is BAT54TA a suitable substitute for BAT54-D87Z?

A: BAT54TA meets the 30V reverse voltage and 200mA current specifications but exhibits different forward voltage characteristics (400mV @ 10mA versus 800mV @ 100mA) and higher reverse leakage current (4µA @ 25V versus 2µA @ 25V). Additionally, the maximum junction temperature is 125°C versus 150°C for BAT54-D87Z. Substitution requires circuit-level verification that these parameter differences are acceptable.

Q: Why does BAR43-TP have lower reverse leakage than BAT54-D87Z?

A: BAR43-TP is manufactured by Micro Commercial Co and exhibits 0.5µA reverse leakage @ 25V compared to 2µA @ 25V for BAT54-D87Z. This represents superior leakage performance while maintaining all other critical electrical specifications. Applications sensitive to reverse leakage current may benefit from this alternative.

Q: What is the significance of AEC-Q101 qualification on BAT54Q-13?

A: AEC-Q101 is an automotive industry qualification standard. BAT54Q-13 carries this certification, indicating compliance with automotive reliability and quality requirements. This qualification is relevant for automotive applications and systems requiring automotive-grade component certification.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed except BAR43-TP carry ROHS3 compliance certification. BAR43-TP does not specify RoHS status in the provided data. Compliance verification is required if ROHS3 certification is a design requirement.

Q: Can I use BAT54-E3-08 in place of BAT54-D87Z?

A: Yes, with the caveat that BAT54-E3-08 has a maximum junction temperature of 125°C versus 150°C for BAT54-D87Z. All other electrical parameters are identical. Substitution is valid for applications where the operating temperature does not exceed 125°C.

Q: What packaging options are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: Cut Tape (CT) & Digi-Reel (BAT54LT1G, BAT54,215, BAT54-E3-08), Tape & Reel (TR) (NSVBAT54LT1G, BAT54E6327HTSA1, BAT54Q-13, BAT54TA, BAT54,235), and Bulk (BAR43-TP). Selection depends on assembly process requirements and volume considerations.

Q: Which substitute offers the highest inventory availability?

A: BAT54LT1G (onsemi) offers the highest inventory with 173,100 units in stock, followed by BAT54,215 (Nexperia USA Inc.) with 546,150 units. Both provide identical electrical specifications to BAT54-D87Z.

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