BAS40-04/ZLR Equivalent & Substitute Parts Reference

Part Overview

The BAS40-04/ZLR is a Schottky diode array from NXP USA Inc. categorized under Diodes, Rectifiers. It features a 1 Pair Series Connection configuration, rated for 40 V DC reverse voltage and 120 mA (DC) average rectified current per diode, with a maximum forward voltage of 1 V at 40 mA. The device is provided in a surface mount TO-236-3, SC-59, SOT-23-3 package, and is ROHS3 compliant. The part is currently classified as Obsolete, requiring identification of alternative models for uninterrupted design and manufacturing continuity in applications where the original part is specified.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Series Connection
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io) (per Diode)	120mA (DC)
Voltage - Forward (Vf) (Max) @ If	1 V @ 40 mA
Current - Reverse Leakage @ Vr	10 µA @ 40 V
Operating Temperature - Junction (Max)	150°C
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute models for BAS40-04/ZLR are identified strictly by matching the explicit electrical and mechanical parameters listed above. Key substitution criteria are:

Diode Configuration: 1 Pair Series Connection
Schottky Technology
Maximum Reverse Voltage: 40 V
Maximum Average Rectified Current: 120mA (DC)
Maximum Forward Voltage: 1 V @ 40 mA
Maximum Reverse Leakage Current: ≤ 10 µA @ 40 V
Maximum Operating Junction Temperature: 150°C
Surface Mount form factor in TO-236-3, SC-59, SOT-23-3 or equivalent package/case
ROHS3 Compliance and MSL 1 (Unlimited)

Substitute parts included in this reference comply with these mandatory requirements.

Parameter Comparison

Part Number	Manufacturer	Diode Configuration	Technology	Vr (Max)	Io (DC)	Vf (Max) @ If	Ir (Max) @ Vr	Operating Temp. (Junction)	Mounting Type	Package / Case	RoHS Status	MSL	Status
BAS40-04/ZLR	NXP USA Inc.	1 Pair Series Connection	Schottky	40 V	120mA	1 V @ 40 mA	10 µA @ 40 V	150°C	Surface Mount	TO-236-3, SC-59, SOT-23-3	ROHS3 Compliant	1 (Unlimited)	Obsolete
BAS40-04,215	Nexperia USA Inc.	1 Pair Series Connection	Schottky	40 V	120mA	1 V @ 40 mA	10 µA @ 40 V	150°C	Surface Mount	TO-236-3, SC-59, SOT-23-3	ROHS3 Compliant	1 (Unlimited)	Active
BAS40-04,235	Nexperia USA Inc.	1 Pair Series Connection	Schottky	40 V	120mA	1 V @ 40 mA	10 µA @ 40 V	150°C	Surface Mount	TO-236-3, SC-59, SOT-23-3	ROHS3 Compliant	1 (Unlimited)	Active
BAS40-04HMFHT116	Rohm Semiconductor	1 Pair Series Connection	Schottky	40 V	120mA	1 V @ 40 mA	10 µA @ 40 V	150°C	Surface Mount	TO-236-3, SC-59, SOT-23-3	ROHS3 Compliant	1 (Unlimited)	Active
BAS40-04HYFHT116	Rohm Semiconductor	1 Pair Series Connection	Schottky	40 V	120mA	1 V @ 40 mA	10 µA @ 40 V	150°C	Surface Mount	TO-236-3, SC-59, SOT-23-3	ROHS3 Compliant	1 (Unlimited)	Active
BAS40-04HYT116	Rohm Semiconductor	1 Pair Series Connection	Schottky	40 V	120mA	1 V @ 40 mA	10 µA @ 40 V	150°C	Surface Mount	TO-236-3, SC-59, SOT-23-3	ROHS3 Compliant	1 (Unlimited)	Active
BAS40-04LT1G	onsemi	1 Pair Series Connection	Schottky	40 V	120mA	1 V @ 40 mA	1 µA @ 25 V	150°C	Surface Mount	TO-236-3, SC-59, SOT-23-3	ROHS3 Compliant	1 (Unlimited)	Active
SBAS40-04LT1G	onsemi	1 Pair Series Connection	Schottky	40 V	120mA	1 V @ 40 mA	1 µA @ 25 V	150°C	Surface Mount	TO-236-3, SC-59, SOT-23-3	ROHS3 Compliant	1 (Unlimited)	Active

Engineering Selection Recommendations

For applications originally specifying BAS40-04/ZLR, selection of substitutes is based on identical core parameters, regulatory compliance, and package compatibility. All listed alternatives have an active status, ROHS3 compliance, and MSL rating of 1 (Unlimited), reflecting suitability for direct replacement. Automotive or AEC-Q100/Q101 qualifications are distinctly noted in relevant substitutes where provided.

Frequently Asked Questions (FAQ)

Q: What are the mandatory electrical parameters for substituting BAS40-04/ZLR?
A: Substitutes must match diode configuration, Schottky technology, maximum reverse voltage of 40 V, maximum average rectified current of 120mA (DC), maximum forward voltage of 1 V @ 40 mA, and maximum reverse leakage current as specified.

Q: Are the mechanical dimensions and mounting types consistent across alternatives?
A: All substitutes use surface mount TO-236-3, SC-59, or SOT-23-3 cases, ensuring mechanical compatibility.

Q: Are there differences in compliance certifications among substitute models?
A: All listed substitutes are ROHS3 compliant and have a Moisture Sensitivity Level of 1 (Unlimited). Automotive-grade and AEC-Q100/Q101 qualification are present in several options and indicated in the comparison table.

Q: Is thermal performance matched among the alternatives?
A: All substitutes specify a maximum junction operating temperature of 150°C, conforming to the requirement set by the original BAS40-04/ZLR.

Q: What should be considered when selecting between active substitute parts?
A: Selection may be based on procurement preferences, stock availability, qualification level, and supplier package designation, all within the boundary of matched electrical, mechanical, and compliance parameters.

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