BAV20 Equivalent & Substitute Parts

Part Overview

The BAV20 is a general-purpose rectifier diode manufactured by onsemi, rated for 200 V DC reverse voltage and 200 mA average rectified current in a Through Hole DO-35 package. The BAV20 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substitute parts listed below maintain functional compatibility within specified electrical and mechanical parameters while offering active product status from alternative manufacturers.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 200 mA	V
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	100 nA @ 200 V	nA
Capacitance @ Vr, F	5 pF @ 0V, 1MHz	pF
Mounting Type	Through Hole	—
Package / Case	DO-204AH, DO-35, Axial	—
Operating Temperature - Junction (Max)	175	°C

Substitute Part Grouping Explanation

Substitution logic for the BAV20 is based on the following critical parameters:

Voltage Rating Compatibility: Substitute parts must maintain a DC reverse voltage rating equal to or greater than 200 V to ensure safe operation in circuits designed for the BAV20.

Current Rating Compatibility: Substitute parts must support an average rectified current of 200 mA or greater.

Package and Mounting: All substitute parts must use Through Hole mounting with compatible package designations (DO-35, DO-204AH, or Axial).

Speed Classification: Substitute parts must operate within the Small Signal or Fast Recovery speed categories applicable to diodes with 200 mA or greater current ratings.

Temperature Range: Operating junction temperature must support the maximum 175°C specification.

Substitute parts are grouped into two categories:

Category A - Voltage Derating Substitutes: Parts with DC reverse voltage ratings below 200 V (125 V or 150 V) are suitable only for applications where the circuit voltage requirement is lower than the BAV20 specification. These parts are not direct substitutes for 200 V rated circuits.

Category B - Direct Substitutes: Parts with DC reverse voltage ratings of 150 V or higher, combined with equal or higher current ratings and compatible packaging, provide direct substitution capability within their voltage class.

Parameter Comparison

Parameter	BAV20 (onsemi)	1N3595 (Microchip)	BAV20,113 (Nexperia)	BAV20,133 (NXP)	BAV20,143 (Nexperia)	BAV20-TR (Vishay)
Voltage - DC Reverse (Vr) (Max)	200 V	125 V	150 V	150 V	150 V	150 V
Current - Average Rectified (Io)	200 mA	200 mA	250 mA	250 mA	250 mA	250 mA
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 200 mA	1 V @ 200 mA	1.25 V @ 200 mA	1.25 V @ 200 mA	1.25 V @ 200 mA	1 V @ 100 mA
Reverse Recovery Time (trr)	50 ns	3 µs	50 ns	50 ns	50 ns	50 ns
Current - Reverse Leakage @ Vr	100 nA @ 200 V	1 nA @ 125 V	100 nA @ 150 V	100 nA @ 150 V	100 nA @ 150 V	100 nA @ 150 V
Capacitance @ Vr, F	5 pF @ 0V, 1MHz	—	5 pF @ 0V, 1MHz	5 pF @ 0V, 1MHz	5 pF @ 0V, 1MHz	1.5 pF @ 0V, 1MHz
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AH, DO-35, Axial	Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH (DO-35)
Operating Temperature - Junction (Max)	175°C	150°C	175°C	175°C	175°C	175°C
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	—	—	ROHS3 Compliant	—	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For 200 V Circuit Applications:

No direct substitute with 200 V rating is available from the provided substitute list. The BAV20 operates at 200 V maximum reverse voltage. Circuits designed for this voltage specification require either:

Procurement of remaining BAV20 inventory from authorized distributors
Circuit redesign to accommodate lower voltage-rated diodes if application voltage permits

For 150 V Circuit Applications:

The following parts provide direct substitution for circuits operating at 150 V or below:

BAV20,113 (Nexperia USA Inc.) — Active product status, ROHS3 compliant, 150 V / 250 mA rating, 50 ns recovery time, Cut Tape packaging, 40,300 units in stock.

BAV20,133 (NXP USA Inc.) — Active product status, 150 V / 250 mA rating, 50 ns recovery time, Bulk packaging, 223,049 units in stock.

BAV20,143 (Nexperia USA Inc.) — Active product status, ROHS3 compliant, 150 V / 250 mA rating, 50 ns recovery time, Cut Tape packaging, 5,551 units in stock.

BAV20-TR (Vishay General Semiconductor) — Active product status, ROHS3 compliant, AEC-Q101 automotive qualified, 150 V / 250 mA rating, 50 ns recovery time, DO-204AH (DO-35) package, 60,658 units in stock.

For 125 V Circuit Applications:

1N3595 (Microchip Technology) — Active product status, 125 V / 200 mA rating, Axial package, 71,795 units in stock. Note: Reverse recovery time is 3 µs, significantly longer than the BAV20 specification of 50 ns. This part is suitable only for applications where fast recovery is not a circuit requirement.

Compliance and Certification:

All active substitute parts maintain REACH Unaffected and EAR99 ECCN status consistent with the BAV20. BAV20-TR includes AEC-Q101 automotive qualification for applications requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can the 1N3595 directly replace the BAV20 in a 200 V circuit?

A: No. The 1N3595 is rated for 125 V maximum reverse voltage, which is insufficient for circuits designed for 200 V operation. Additionally, the 1N3595 has a reverse recovery time of 3 µs compared to the BAV20's 50 ns specification, making it unsuitable for high-speed switching applications.

Q: What is the voltage derating consideration when using BAV20,113, BAV20,133, BAV20,143, or BAV20-TR?

A: These parts are rated for 150 V maximum reverse voltage, compared to the BAV20's 200 V rating. They are suitable substitutes only for circuits operating at 150 V or below. If your circuit requires 200 V operation, these parts are not appropriate substitutes.

Q: Are all substitute parts available in the same DO-35 package as the BAV20?

A: Yes. All substitute parts support DO-204AH (DO-35) package designation. BAV20,113, BAV20,133, and BAV20,143 also support Axial package options. BAV20-TR is specifically designated as DO-204AH (DO-35).

Q: Which substitute part has the highest current rating?

A: BAV20,113, BAV20,133, BAV20,143, and BAV20-TR all support 250 mA average rectified current, compared to the BAV20's 200 mA rating. The 1N3595 matches the BAV20 at 200 mA.

Q: Does the BAV20-TR offer any additional qualifications?

A: Yes. BAV20-TR includes AEC-Q101 automotive qualification and ROHS3 compliance, making it suitable for automotive and regulated applications requiring formal qualification documentation.

Q: What is the difference in reverse recovery time between the BAV20 and substitute parts?

A: The BAV20 specifies 50 ns reverse recovery time. BAV20,113, BAV20,133, BAV20,143, and BAV20-TR all maintain 50 ns recovery time. The 1N3595 has a significantly longer recovery time of 3 µs, which affects switching performance in high-frequency applications.

Q: Can I use a 150 V rated substitute in a 200 V circuit if I add protective circuitry?

A: No. Component ratings define absolute maximum operating conditions. Using a 150 V rated diode in a 200 V circuit violates the component's electrical specification regardless of external protective measures.

Q: Which substitute part has the lowest forward voltage drop?

A: The 1N3595 and BAV20-TR both specify 1 V forward voltage (at different current conditions: 1N3595 at 200 mA, BAV20-TR at 100 mA). The BAV20, BAV20,113, BAV20,133, and BAV20,143 all specify 1.25 V forward voltage at 200 mA.

Q: Are there packaging differences between substitute parts?

A: Yes. BAV20,113 and BAV20,143 are supplied in Cut Tape (CT) packaging. BAV20,133 is supplied in Bulk packaging. BAV20-TR is supplied in Cut Tape (CT) packaging. All support Through Hole mounting with compatible package designations.

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