BAS40_R1_00001 Equivalent & Substitute Parts

Part Overview

The BAS40_R1_00001 is a Schottky rectifier diode manufactured by Panjit International Inc., rated for 40 V DC reverse voltage and 200 mA average rectified current in a surface mount SOT-23 package. This component is classified as a small signal Schottky diode suitable for applications requiring low forward voltage drop and fast switching characteristics. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter ranges, or when higher-rated alternatives provide functional compatibility for the intended application circuit topology.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	40	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 40 mA	V @ mA
Current - Reverse Leakage @ Vr	1	µA @ 25 V
Capacitance @ Vr, F	5	pF @ 0V, 1MHz
Technology	Schottky	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution classification is determined by the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) rating equal to or greater than 40 V
Package / Case compatibility with TO-236-3, SC-59, or SOT-23-3 form factors
Schottky diode technology classification
Surface mount mounting type
RoHS3 compliance status

Secondary Compatibility Factors:

Current - Average Rectified (Io) rating equal to or exceeding 200 mA
Forward voltage characteristics suitable for low-loss applications
Operating temperature range encompassing -55°C to 150°C junction temperature

Substitute parts are grouped into two categories: Parametric Equivalent (matching all primary criteria with identical electrical ratings) and Similar (matching primary criteria with enhanced current or performance specifications).

Parameter Comparison

Parameter	BAS40_R1_00001	BAS40-AU_R1_000A1	BAT720,235	PMEG4010ET,215
Manufacturer	Panjit International Inc.	Panjit International Inc.	Nexperia USA Inc.	Nexperia USA Inc.
Voltage - DC Reverse (Vr) (Max)	40 V	40 V	40 V	40 V
Current - Average Rectified (Io)	200 mA	200 mA	500 mA	1 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 40 mA	1 V @ 40 mA	550 mV @ 500 mA	640 mV @ 1 A
Current - Reverse Leakage @ Vr	1 µA @ 25 V	1 µA @ 40 V	100 µA @ 35 V	100 µA @ 40 V
Capacitance @ Vr, F	5 pF @ 0V, 1MHz	5 pF @ 0V, 1MHz	90 pF @ 0V, 1MHz	50 pF @ 1V, 1MHz
Speed Classification	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Supplier Device Package	SOT-23	SOT-23	TO-236AB	TO-236AB
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	Max 125°C	Max 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

BAS40-AU_R1_000A1 (Parametric Equivalent)

This part is a direct parametric equivalent to BAS40_R1_00001, manufactured by Panjit International Inc. Both parts share identical electrical specifications: 40 V reverse voltage, 200 mA average rectified current, 1 V forward voltage at 40 mA, and 5 pF capacitance. The BAS40-AU_R1_000A1 carries AEC-Q101 automotive qualification, indicating enhanced reliability screening and traceability. Both parts maintain identical operating temperature range (-55°C to 150°C), RoHS3 compliance, and unlimited moisture sensitivity rating. Selection between these two parts depends on application requirements for automotive-grade qualification and higher inventory availability (9241 pcs vs. 3391 pcs).

BAT720,235 (Similar - Higher Current Rating)

The BAT720,235 manufactured by Nexperia USA Inc. provides 40 V reverse voltage with enhanced 500 mA average rectified current capacity. This part is suitable for applications requiring higher current handling than the 200 mA specification of BAS40_R1_00001. The BAT720,235 exhibits fast recovery characteristics (≤ 500ns) compared to the small signal classification of the main part. Forward voltage is specified at 550 mV @ 500 mA, representing lower forward voltage drop per unit current. Reverse leakage increases to 100 µA @ 35 V, and junction capacitance increases to 90 pF @ 0V, 1MHz. Operating temperature maximum is limited to 125°C, which is lower than the 150°C rating of BAS40_R1_00001. This part is suitable for designs where current margin and fast recovery are prioritized over low capacitance characteristics.

PMEG4010ET,215 (Similar - Highest Current Rating)

The PMEG4010ET,215 manufactured by Nexperia USA Inc. provides 40 V reverse voltage with 1 A average rectified current, the highest rating among all listed substitutes. This part incorporates fast recovery characteristics (≤ 500ns) and maintains the full -55°C to 150°C operating temperature range. Forward voltage is specified at 640 mV @ 1 A. Reverse leakage is 100 µA @ 40 V, and junction capacitance is 50 pF @ 1V, 1MHz. This part is suitable for applications requiring maximum current capacity within the 40 V voltage class while maintaining full temperature range compatibility. The PMEG4010ET,215 offers the highest inventory availability (89080 pcs) among all listed parts.

Frequently Asked Questions (FAQ)

Q: Can BAS40-AU_R1_000A1 be used as a direct replacement for BAS40_R1_00001?

A: Yes. Both parts are manufactured by Panjit International Inc. and share identical electrical specifications: 40 V reverse voltage, 200 mA average rectified current, 1 V forward voltage at 40 mA, 5 pF capacitance, and -55°C to 150°C operating temperature range. The primary difference is AEC-Q101 automotive qualification on the BAS40-AU_R1_000A1. Direct substitution is valid for applications not requiring automotive qualification.

Q: What is the difference between BAT720,235 and BAS40_R1_00001?

A: The BAT720,235 is rated for 500 mA average rectified current compared to 200 mA for BAS40_R1_00001, providing 2.5× current capacity. The BAT720,235 exhibits fast recovery characteristics (≤ 500ns) versus small signal classification. Forward voltage is lower per unit current (550 mV @ 500 mA vs. 1 V @ 40 mA). Reverse leakage increases to 100 µA @ 35 V, and junction capacitance increases to 90 pF. Operating temperature maximum is 125°C, which is 25°C lower than BAS40_R1_00001. The BAT720,235 is suitable for higher-current applications where fast recovery is beneficial.

Q: Can PMEG4010ET,215 replace BAS40_R1_00001 in all applications?

A: The PMEG4010ET,215 provides 1 A average rectified current capacity, 5× the 200 mA rating of BAS40_R1_00001, with identical 40 V reverse voltage and full -55°C to 150°C operating temperature range. Fast recovery characteristics (≤ 500ns) are present. Forward voltage is 640 mV @ 1 A. Reverse leakage is 100 µA @ 40 V, and junction capacitance is 50 pF @ 1V, 1MHz. The PMEG4010ET,215 is suitable for applications where higher current capacity is required or beneficial, with no temperature range limitations.

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

A: All parts are available in TO-236-3, SC-59, or SOT-23-3 package designations. The supplier device packages differ: BAS40_R1_00001 and BAS40-AU_R1_000A1 are supplied as SOT-23, while BAT720,235 and PMEG4010ET,215 are supplied as TO-236AB. These designations refer to the same physical form factor and are mechanically and electrically compatible for PCB assembly.

Q: What is the significance of AEC-Q101 qualification on BAS40-AU_R1_000A1?

A: AEC-Q101 is an automotive industry qualification standard indicating the part has undergone enhanced reliability screening, testing, and traceability procedures. The BAS40-AU_R1_000A1 carries this qualification while BAS40_R1_00001 does not. Selection of the qualified part is necessary for automotive applications or designs requiring automotive-grade component certification.

Q: Which substitute part has the lowest reverse leakage current?

A: BAS40_R1_00001 and BAS40-AU_R1_000A1 both specify 1 µA reverse leakage current (at 25 V and 40 V respectively), which is significantly lower than the 100 µA specified for BAT720,235 and PMEG4010ET,215. Applications requiring minimal reverse leakage should prioritize the Panjit parts.

Q: Which substitute part has the lowest junction capacitance?

A: BAS40_R1_00001 and BAS40-AU_R1_000A1 both specify 5 pF junction capacitance at 0V, 1MHz. The PMEG4010ET,215 specifies 50 pF at 1V, 1MHz, and the BAT720,235 specifies 90 pF at 0V, 1MHz. Applications sensitive to capacitive loading should prioritize the Panjit parts.

Q: Can higher-rated substitute parts be used in place of BAS40_R1_00001 without circuit modification?

A: Higher-rated parts (BAT720,235 and PMEG4010ET,215) can be used as substitutes provided the circuit design accommodates the differences in forward voltage, reverse leakage, and junction capacitance. These parameters may affect circuit performance in sensitive applications. Circuit validation is necessary to confirm compatibility with specific application requirements.

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