BAS20,235 Equivalent & Substitute Parts

Part Overview

The BAS20,235 is a general-purpose rectifier diode manufactured by Nexperia USA Inc., rated for 150 V DC reverse voltage and 200 mA average rectified current in a surface mount TO-236AB package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified based on matching or exceeding electrical performance parameters while maintaining compatible package configurations for surface mount assembly. Alternative part numbers become necessary when primary inventory is unavailable, when sourcing from multiple manufacturers is required for supply chain resilience, or when design flexibility permits operation within a broader parameter range.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	150	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	1.25 @ 200 mA	V
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	100 nA @ 150 V	nA
Capacitance @ Vr, F	5 @ 0V, 1MHz	pF
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Operating Temperature - Junction (Max)	150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BAS20,235 are classified into three categories based on electrical and mechanical compatibility:

Parametric Equivalent (Direct Substitution): Parts that match all critical electrical parameters and package specifications. The BAS20,215 from Nexperia USA Inc. is a parametric equivalent, sharing identical voltage, current, forward voltage, recovery time, leakage current, and capacitance specifications with identical TO-236AB packaging.

Direct Manufacturer Alternatives (Voltage-Rated Upgrades): Parts from alternative manufacturers that meet or exceed the primary electrical specifications while maintaining compatible surface mount packages. BAS20LT1G and BAS20LT3G from onsemi feature 200 V reverse voltage rating (exceeding the 150 V requirement) with identical current and forward voltage characteristics, packaged in SOT-23-3 (TO-236) format.

Similar Cross-Functional Parts (Package or Manufacturer Variants): Parts that maintain core electrical performance within the small-signal diode category but may feature different package styles or manufacturers. BAS20-7-F from Diodes Incorporated and BAS20-TP from Micro Commercial Co provide 150 V / 200 mA performance in SOT-23F and SOT-23 packages respectively. BAS21E6327HTSA1 from Infineon Technologies offers enhanced current rating (250 mA) at 200 V with fast recovery characteristics.

Substitution logic is based on the following key parameters:

Voltage - DC Reverse (Vr) must equal or exceed 150 V
Current - Average Rectified (Io) must equal or exceed 200 mA
Voltage - Forward (Vf) must not exceed 1.25 V @ 200 mA
Reverse Recovery Time (trr) must not exceed 50 ns
Mounting Type must be Surface Mount
Package must be compatible with TO-236-3, SC-59, or SOT-23-3 footprints

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [nA]	Package	Product Status
BAS20,235	Nexperia USA Inc.	150	200	1.25 @ 200 mA	50	100 @ 150 V	TO-236AB	Active
BAS20,215	Nexperia USA Inc.	150	200	1.25 @ 200 mA	50	100 @ 150 V	TO-236AB	Active
BAS20LT1G	onsemi	200	200	1.25 @ 200 mA	50	100 @ 150 V	SOT-23-3 (TO-236)	Active
BAS20LT3G	onsemi	200	200	1.25 @ 200 mA	50	100 @ 150 V	SOT-23-3 (TO-236)	Active
BAS20-7-F	Diodes Incorporated	150	200	1.25 @ 200 mA	50	100 @ 150 V	SOT-23F	Active
BAS20-TP	Micro Commercial Co	150	200	1.25 @ 200 mA	50	100 @ 150 V	SOT-23	Active
BAS21E6327HTSA1	Infineon Technologies	200	250	1.25 @ 200 mA	50	100 @ 200 V	PG-SOT23	Last Time Buy
BAS21WT-TP	Micro Commercial Co	200	200	1.25 @ 200 mA	50	100 @ 200 V	SOT-323	Active
MMBD1501-TP	Micro Commercial Co	180	200	1.3 @ 200 mA	—	10 @ 180 V	SOT-23	Active
MMBD1504A	onsemi	200	200	1.1 @ 200 mA	—	10 @ 180 V	SOT-23-3	Active

Engineering Selection Recommendations

Primary Substitutes (Recommended for Direct Replacement):

BAS20,215 from Nexperia USA Inc. is the optimal parametric equivalent, offering identical electrical specifications and TO-236AB packaging. Both parts share the same base product number (BAS20) and are manufactured by the same supplier, ensuring design compatibility and performance consistency.

BAS20LT1G and BAS20LT3G from onsemi are suitable alternatives when sourcing from multiple manufacturers is required. Both parts exceed the reverse voltage specification (200 V vs. 150 V requirement) while maintaining identical current and forward voltage characteristics. The SOT-23-3 (TO-236) package is mechanically compatible with the original TO-236-3 footprint. Both parts maintain Active product status and RoHS3 compliance.

Secondary Substitutes (Conditional Application):

BAS20-7-F from Diodes Incorporated and BAS20-TP from Micro Commercial Co maintain identical electrical performance to the BAS20,235 with 150 V / 200 mA ratings. Package variants (SOT-23F and SOT-23 respectively) require PCB layout verification for mechanical compatibility, though all three package styles (TO-236-3, SC-59, SOT-23-3) share the same footprint dimensions.

Limited-Use Alternatives:

BAS21E6327HTSA1 from Infineon Technologies carries Last Time Buy product status and should be selected only when inventory of Active-status alternatives is exhausted. This part offers enhanced current capability (250 mA) and higher voltage rating (200 V), suitable for applications requiring design margin, but the fast recovery technology classification differs from the small-signal specification of the primary part.

BAS21WT-TP from Micro Commercial Co features a SOT-323 package (SC-70), which is mechanically incompatible with the original TO-236-3 footprint and requires PCB redesign.

MMBD1501-TP and MMBD1504A are diode array configurations rather than single diodes and are not recommended as direct substitutes for single-diode applications.

Frequently Asked Questions (FAQ)

Q: Can BAS20LT1G or BAS20LT3G be used as direct replacements for BAS20,235?

A: Yes. Both onsemi parts meet or exceed all critical electrical parameters (200 V reverse voltage exceeds the 150 V requirement; 200 mA current matches specification; forward voltage and recovery time are identical). The SOT-23-3 (TO-236) package is mechanically compatible with the original TO-236-3 footprint. Both parts are Active status and RoHS3 compliant.

Q: What is the difference between BAS20,235 and BAS20,215?

A: BAS20,235 and BAS20,215 are parametric equivalents from the same manufacturer (Nexperia USA Inc.) with identical electrical specifications and packaging. The numerical suffix indicates different tape reel configurations or manufacturing date codes. Both parts are functionally interchangeable.

Q: Can MMBD1504A replace BAS20,235?

A: No. MMBD1504A is a diode array (1 pair common cathode configuration) rather than a single diode. The pinout and functional behavior differ fundamentally from the single-diode BAS20,235, making it unsuitable for direct substitution.

Q: Is BAS21E6327HTSA1 suitable for this application?

A: BAS21E6327HTSA1 exceeds the electrical requirements (200 V / 250 mA vs. 150 V / 200 mA) and is electrically compatible. However, this part carries Last Time Buy product status, indicating discontinued manufacturing. Selection should be limited to situations where Active-status alternatives are unavailable. The fast recovery technology classification also differs from the small-signal specification of BAS20,235.

Q: What are the package compatibility considerations?

A: BAS20,235 is specified in TO-236AB packaging. Substitute parts using TO-236-3, SC-59, or SOT-23-3 packages are mechanically compatible as these designations refer to the same physical footprint. BAS20-7-F (SOT-23F) and BAS20-TP (SOT-23) variants use flat-lead versions of the same footprint. BAS21WT-TP (SOT-323) and MMBD1501-TP use different footprints and require PCB layout verification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain RoHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), matching the environmental and handling specifications of BAS20,235.

Q: What reverse voltage margin exists with BAS20LT1G or BAS20LT3G?

A: BAS20LT1G and BAS20LT3G are rated for 200 V reverse voltage, providing a 50 V margin above the 150 V requirement of BAS20,235. This additional margin may be beneficial in applications subject to voltage transients or design uncertainty, though it is not required for direct substitution.

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