BAT750-7 Equivalent & Substitute Parts

Part Overview

The BAT750-7 is a Schottky rectifier diode rated for 40 V DC reverse voltage and 750 mA average rectified current in a surface mount SOT-23-3 package. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement. The BAT750-7 features fast recovery characteristics with a 10 ns reverse recovery time, suitable for high-frequency switching applications requiring low forward voltage drop.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	750	mA
Voltage - Forward (Vf) (Max) @ If	490 mV @ 750 mA	mV
Reverse Recovery Time (trr)	10	ns
Current - Reverse Leakage @ Vr	100 µA @ 30 V	µA
Capacitance @ Vr, F	175 pF @ 0V, 1MHz	pF
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Operating Temperature - Junction	-55 to 125	°C
Technology	Schottky	—

Substitute Part Grouping Explanation

Substitution of the BAT750-7 is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 40 V
Current - Average Rectified (Io): Must equal or exceed 750 mA
Package / Case: Must be TO-236-3, SC-59, or SOT-23-3 for mechanical compatibility
Technology: Schottky diode type
Mounting Type: Surface Mount

Substitution Categories:

Category 1: Direct Parametric Equivalents Parts that match or exceed all critical electrical parameters while maintaining identical package specifications. These parts are fully interchangeable with the BAT750-7 in circuit applications.

Category 2: Functional Equivalents with Reduced Current Rating Parts that maintain the 40 V reverse voltage rating but have lower current ratings (120 mA to 500 mA). These are suitable only for applications where the actual circuit current requirement is below 750 mA.

Category 3: Functional Equivalents with Higher Current Rating Parts that exceed the 750 mA current requirement while maintaining 40 V reverse voltage rating. These provide additional design margin and are suitable for all BAT750-7 applications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) [mV]	trr [ns]	Package	Product Status	RoHS Status
BAT750-7	Diodes Incorporated	40	750	490 @ 750 mA	10	SOT-23-3	Discontinued	Non-compliant
BAT750-7-F	Diodes Incorporated	40	750	490 @ 750 mA	10	SOT-23-3	Active	ROHS3 Compliant
BAT750-TP	Micro Commercial Co	40	750	650 @ 1.5 A	—	SOT-23-3	Active	ROHS3 Compliant
BAS40,215	Nexperia USA Inc.	40	120	1000 @ 40 mA	—	SOT-23-3	Active	ROHS3 Compliant
BAS40,235	Nexperia USA Inc.	40	120	1000 @ 40 mA	—	SOT-23-3	Active	ROHS3 Compliant
BAT64E6327HTSA1	Infineon Technologies	40	120	750 @ 100 mA	5	SOT-23-3	Active	ROHS3 Compliant
BAT720,215	Nexperia USA Inc.	40	500	550 @ 500 mA	—	SOT-23-3	Active	ROHS3 Compliant
BAT720,235	Nexperia USA Inc.	40	500	550 @ 500 mA	—	SOT-23-3	Active	ROHS3 Compliant
BAT721,215	Nexperia USA Inc.	40	200	550 @ 200 mA	—	SOT-23-3	Active	ROHS3 Compliant
PMEG4005ET,215	Nexperia USA Inc.	40	500	470 @ 500 mA	—	SOT-23-3	Active	ROHS3 Compliant
PMEG4010ET,215	Nexperia USA Inc.	40	1000	640 @ 1 A	—	SOT-23-3	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: BAT750-7-F

The BAT750-7-F from Diodes Incorporated is the direct parametric equivalent to the BAT750-7. It maintains identical electrical specifications including 40 V reverse voltage, 750 mA current rating, 490 mV forward voltage drop at 750 mA, and 10 ns reverse recovery time. The BAT750-7-F is in active product status with ROHS3 compliance, addressing the discontinuation of the original BAT750-7. This part is the preferred choice for direct replacement in existing designs.

Secondary Recommendation: BAT750-TP

The BAT750-TP from Micro Commercial Co provides equivalent voltage and current ratings in the same SOT-23-3 package. While forward voltage specifications are measured at different current levels (650 mV @ 1.5 A versus 490 mV @ 750 mA), the part maintains the required 40 V and 750 mA specifications. This part is in active status with ROHS3 compliance and offers an alternative source for procurement.

Higher Current Alternative: PMEG4010ET,215

The PMEG4010ET,215 from Nexperia USA Inc. provides 1 A current rating with 40 V reverse voltage in the same SOT-23-3 package. This part is suitable for applications requiring additional current margin beyond the 750 mA specification. It features ROHS3 compliance and active product status.

Lower Current Alternatives: BAT720,215 / BAT720,235 / PMEG4005ET,215

These parts provide 500 mA current rating with 40 V reverse voltage. They are suitable only for applications where the actual circuit current requirement does not exceed 500 mA. All three parts are in active status with ROHS3 compliance.

Not Recommended for Direct Substitution: BAS40,215 / BAS40,235 / BAT64E6327HTSA1 / BAT721,215

These parts have current ratings of 120 mA or 200 mA, which fall below the 750 mA specification of the BAT750-7. These parts are suitable only for low-current applications and should not be used as substitutes in circuits designed for 750 mA operation.

Frequently Asked Questions (FAQ)

Q: Can BAT750-7-F be used as a direct replacement for BAT750-7?

A: Yes. The BAT750-7-F is a direct parametric equivalent with identical electrical specifications (40 V, 750 mA, 490 mV forward voltage, 10 ns recovery time) and the same SOT-23-3 package. The primary difference is product status (active versus discontinued) and RoHS compliance (ROHS3 compliant versus non-compliant).

Q: What is the difference between BAT720,215 and BAT720,235?

A: Both parts are identical in electrical specifications and package type. The difference is in packaging format: BAT720,215 is supplied in Cut Tape (CT) & Digi-Reel format, while BAT720,235 is supplied in Tape & Reel (TR) format. Selection depends on procurement and assembly requirements.

Q: Can I use PMEG4010ET,215 in place of BAT750-7?

A: Yes, for applications where the circuit current requirement does not exceed 1 A. The PMEG4010ET,215 provides 1 A current rating with 40 V reverse voltage in the same SOT-23-3 package. However, the forward voltage specification (640 mV @ 1 A) differs from the BAT750-7 (490 mV @ 750 mA), which may affect circuit performance in voltage-sensitive applications.

Q: Why are BAS40,215 and BAS40,235 listed as substitutes if they have only 120 mA rating?

A: These parts are listed as manufacturer-recommended alternatives for applications where the actual circuit current requirement is significantly below 750 mA. They should not be used in circuits designed for the full 750 mA specification, as they will exceed their rated current and may fail.

Q: Are all substitute parts available in the same package?

A: Yes. All substitute parts listed are available in TO-236-3, SC-59, or SOT-23-3 packages, which are mechanically compatible with the BAT750-7. This ensures PCB footprint compatibility without layout modifications.

Q: What is the significance of the 10 ns reverse recovery time in BAT750-7?

A: The 10 ns reverse recovery time indicates fast switching characteristics suitable for high-frequency rectification applications. When selecting substitutes, the BAT750-7-F maintains this specification. Other substitutes may have different recovery times, which could affect performance in high-frequency circuits.

Q: Does RoHS compliance matter for BAT750-7 substitution?

A: RoHS compliance is relevant for applications subject to regulatory requirements or customer specifications. The BAT750-7 is RoHS non-compliant, while all active substitute parts listed are ROHS3 compliant. If RoHS compliance is required, the BAT750-7-F is the appropriate choice.

Q: Can I use a lower current-rated part if my circuit only draws 500 mA?

A: Yes, if your circuit current requirement is confirmed to be 500 mA or less, parts such as BAT720,215, BAT720,235, or PMEG4005ET,215 are suitable. However, design documentation should clearly specify the actual current requirement to justify the use of a lower-rated component.

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