BAV20,143 Equivalent & Substitute Parts

Part Overview

The BAV20,143 is a general-purpose rectifier diode manufactured by Nexperia USA Inc., rated for 150 V DC reverse voltage and 250 mA average rectified current. This through-hole component features fast recovery characteristics with a 50 ns reverse recovery time, making it suitable for standard rectification applications requiring moderate voltage and current ratings. The part is Active in product status and RoHS3 compliant. Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter ranges while accommodating different packaging formats or manufacturer sourcing requirements.

Substiute Parts

BAV20,143

Nexperia USA Inc.In Stock: 5583BAV20,143 Datasheet

Current PartRFQ

BAV20,133

NXP USA Inc.In Stock: 223101BAV20,133 Datasheet

Parametric EquivalentRFQ

1N4938-1

Microchip TechnologyIn Stock: 9851N4938-1 Datasheet

SimilarRFQ

FDH300ATR

onsemiIn Stock: 4228FDH300ATR Datasheet

SimilarRFQ

FDH300TR

onsemiIn Stock: 35494FDH300TR Datasheet

SimilarRFQ

FDH333TR

onsemiIn Stock: 168643FDH333TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BAV20,143 are classified based on electrical parameter compatibility and packaging availability. The primary substitution criterion is the ability to maintain or exceed the reverse voltage rating (150 V minimum) and average rectified current rating (250 mA minimum) while operating within the same through-hole mounting configuration.

Parametric Equivalent Classification: Parts meeting all key electrical parameters (Vr ≥ 150 V, Io ≥ 250 mA, trr = 50 ns, Vf ≤ 1.25 V @ 200 mA) with identical mounting type and package family.

Similar Classification: Parts with reduced voltage or current ratings, different recovery speed characteristics, or modified forward voltage specifications that may require application-level verification for specific circuit requirements.

The following parameters determine substitution eligibility:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 150 V
• Current - Average Rectified (Io): Must equal or exceed 250 mA
• Mounting Type: Must be Through Hole
• Package / Case: Must be DO-204AH, DO-35, or Axial configuration
• Reverse Recovery Time (trr): 50 ns specification
• Operating Temperature - Junction: Must support 175°C maximum

Parameter Comparison

Engineering Selection Recommendations

BAV20,133 (Parametric Equivalent): This part is manufactured by NXP USA Inc. and provides identical electrical specifications to the BAV20,143, including 150 V reverse voltage, 250 mA average rectified current, 1.25 V forward voltage at 200 mA, and 50 ns reverse recovery time. The primary difference is packaging format (Bulk versus Cut Tape). This part is Active in product status. RoHS compliance status is not specified in the provided data. Selection of BAV20,133 is appropriate when bulk packaging meets procurement requirements and equivalent electrical performance is required.

1N4938-1 (Similar - Reduced Current Rating): Manufactured by Microchip Technology, this part features a higher reverse voltage rating (175 V) but reduced average rectified current (100 mA). The reverse recovery time matches at 50 ns. This part is RoHS non-compliant and should not be selected for applications requiring RoHS3 compliance. The reduced current rating (100 mA versus 250 mA) makes this part unsuitable for circuits designed for the full 250 mA specification of the BAV20,143.

FDH300ATR and FDH300TR (Similar - Reduced Voltage and Current Ratings): Both onsemi parts feature 125 V reverse voltage and 200 mA average rectified current, representing reductions in both voltage and current specifications relative to the BAV20,143. These parts are classified as Small Signal diodes with unspecified recovery speed characteristics. Both are ROHS3 compliant and Active in product status. FDH300TR has significantly higher inventory availability (35,400 pcs). These parts are suitable only for applications with reduced voltage and current requirements.

FDH333TR (Similar - Reduced Voltage and Current Ratings): This onsemi part also features 125 V reverse voltage and 200 mA average rectified current with forward voltage of 1.15 V at 300 mA. Like the FDH300 series, this represents a reduction in both voltage and current specifications. This part is ROHS3 compliant, Active in product status, and has the highest inventory availability (168,620 pcs) among all listed substitutes.

For applications requiring full compliance with the BAV20,143 electrical specifications, BAV20,133 is the only parametric equivalent. Selection of FDH300 or FDH333 series parts requires confirmation that reduced voltage (125 V) and current (200 mA) ratings are acceptable for the target application.

Frequently Asked Questions (FAQ)

Q: Can BAV20,133 be used as a direct replacement for BAV20,143?

A: Yes. BAV20,133 is a parametric equivalent with identical electrical specifications: 150 V reverse voltage, 250 mA average rectified current, 1.25 V forward voltage at 200 mA, and 50 ns reverse recovery time. The difference is packaging format (Bulk versus Cut Tape). Both are through-hole components in DO-204AH/DO-35 Axial configuration.

Q: Why are FDH300TR and FDH333TR listed as substitutes if they have lower voltage and current ratings?

A: These parts are listed as similar alternatives for applications where the full 150 V and 250 mA specifications of the BAV20,143 are not required. The 125 V reverse voltage and 200 mA average rectified current of the FDH300 and FDH333 series are suitable for circuits with reduced voltage and current demands. Circuit-level analysis is necessary to determine if these reduced ratings are acceptable.

Q: What is the difference between FDH300ATR, FDH300TR, and FDH333TR?

A: FDH300ATR and FDH300TR are electrically identical onsemi parts with 125 V reverse voltage and 200 mA average rectified current. Both are available in Cut Tape packaging. FDH300TR has significantly higher inventory (35,400 pcs versus 4,200 pcs). FDH333TR is also an onsemi part with the same voltage and current ratings but features a forward voltage of 1.15 V at 300 mA (compared to 1 V at 200 mA for FDH300 series) and has the highest inventory availability (168,620 pcs).

Q: Is 1N4938-1 suitable as a substitute for BAV20,143?

A: 1N4938-1 is not suitable as a direct substitute. While it features a higher reverse voltage rating (175 V) and matching 50 ns reverse recovery time, the average rectified current is only 100 mA, which is 60% below the 250 mA specification of the BAV20,143. Additionally, 1N4938-1 is RoHS non-compliant, which may conflict with system-level compliance requirements.

Q: What packaging formats are available for these diodes?

A: All listed parts are through-hole components available in DO-204AH, DO-35, or Axial package configurations. BAV20,143 and BAV20,133 are supplied in Cut Tape and Bulk formats respectively. FDH300ATR, FDH300TR, and FDH333TR are supplied in Cut Tape format.

Q: Are all substitute parts RoHS3 compliant?

A: No. BAV20,143, BAV20,133 (compliance status not specified), FDH300ATR, FDH300TR, and FDH333TR are ROHS3 compliant. 1N4938-1 is RoHS non-compliant and should not be used in applications requiring RoHS3 certification.

Q: What is the significance of the 50 ns reverse recovery time specification?

A: The 50 ns reverse recovery time indicates fast recovery diode characteristics, which reduces switching losses and improves efficiency in rectification circuits. BAV20,143, BAV20,133, and 1N4938-1 all specify 50 ns reverse recovery time. FDH300ATR, FDH300TR, and FDH333TR do not specify reverse recovery time and are classified as Small Signal diodes with unspecified speed characteristics.

Q: Can I use a substitute part with lower voltage rating in a 150 V application?

A: No. Using a diode with a lower reverse voltage rating than the circuit requires creates risk of reverse breakdown and component failure. FDH300 and FDH333 series parts rated for 125 V maximum reverse voltage must not be used in circuits designed for 150 V operation.