BAV20 Equivalent & Substitute Parts

Part Overview

The BAV20 is a small signal rectifier diode manufactured by Diodes Incorporated, rated for 150 V DC reverse voltage and 200 mA average rectified current in a DO-35 through-hole axial package. This part is classified as obsolete, though 5200 pieces remain in stock as new original inventory. The BAV20 is a standard technology diode with a 50 ns reverse recovery time, suitable for general-purpose rectification applications requiring compact form factors and moderate current handling.

Due to the obsolete product status of the BAV20, equivalent and substitute parts are necessary for new designs, long-term production continuity, and procurement flexibility. Substitute parts listed below maintain electrical compatibility while offering active product status, improved compliance certifications, and alternative packaging options.

Key Parameters

Parameter	BAV20 Specification
Voltage - DC Reverse (Vr) (Max)	150 V
Current - Average Rectified (Io)	200 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 100 mA
Reverse Recovery Time (trr)	50 ns
Current - Reverse Leakage @ Vr	100 nA @ 150 V
Mounting Type	Through Hole
Package / Case	DO-35 (DO-204AH), Axial
Technology	Standard
Speed Classification	Small Signal ≤ 200 mA (Io), Any Speed
RoHS Status	RoHS Non-Compliant

Substitute Part Grouping Explanation

Substitute parts for the BAV20 are grouped based on the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 150 V minimum
Current - Average Rectified (Io): 200 mA minimum
Mounting Type: Through Hole
Package / Case: DO-35 or equivalent axial configuration
Technology: Standard rectifier diode

Secondary Compatibility Factors:

Reverse Recovery Time (trr): 50 ns or faster acceptable
Current - Reverse Leakage @ Vr: 100 nA @ 150 V or lower
Forward Voltage (Vf): Comparable performance at rated current

Substitute parts are classified into two categories:

Category A - Direct Electrical Equivalents (Through-Hole DO-35 Package): Parts maintaining identical voltage and current ratings with through-hole axial packaging: 1N3595TR, BAX16, BAX16TR, FDH300A, FDH300ATR

Category B - Enhanced Performance Variants (Through-Hole, Upgraded Ratings): Parts with equal or superior voltage/current ratings, improved recovery characteristics, or enhanced compliance: BAV20,113, BAV20,133, BAV20,143

Category C - Alternative Packaging (Surface Mount): Parts with equivalent electrical specifications in alternative form factors: BAV20W-7-F (SOD-123 surface mount)

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (Max)	Vf (Max) @ If	trr	Package	Mounting	Product Status	RoHS Status
BAV20	Diodes Incorporated	150 V	200 mA	1 V @ 100 mA	50 ns	DO-35	Through Hole	Obsolete	Non-Compliant
BAV20W-7-F	Diodes Incorporated	150 V	400 mA	1.25 V @ 200 mA	50 ns	SOD-123	Surface Mount	Active	ROHS3 Compliant
1N3595	Microchip Technology	125 V	200 mA	1 V @ 200 mA	3 µs	Axial	Through Hole	Active	Not Specified
1N3595TR	onsemi	150 V	200 mA	1 V @ 200 mA	3 µs	DO-35	Through Hole	Active	ROHS3 Compliant
BAV20,113	Nexperia USA Inc.	150 V	250 mA	1.25 V @ 200 mA	50 ns	ALF2	Through Hole	Active	ROHS3 Compliant
BAV20,133	NXP USA Inc.	150 V	250 mA	1.25 V @ 200 mA	50 ns	ALF2	Through Hole	Active	Not Specified
BAV20,143	Nexperia USA Inc.	150 V	250 mA	1.25 V @ 200 mA	50 ns	ALF2	Through Hole	Active	ROHS3 Compliant
BAX16	Fairchild Semiconductor	150 V	200 mA	650 mV @ 1 mA	120 ns	DO-35	Through Hole	Active	Not Specified
BAX16TR	onsemi	150 V	200 mA	650 mV @ 1 mA	120 ns	DO-35	Through Hole	Active	ROHS3 Compliant
FDH300A	onsemi	125 V	200 mA	1 V @ 200 mA	Not Specified	DO-35	Through Hole	Active	ROHS3 Compliant
FDH300ATR	onsemi	125 V	200 mA	1 V @ 200 mA	Not Specified	DO-35	Through Hole	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement in Existing Through-Hole Designs:

The 1N3595TR (onsemi) and BAX16TR (onsemi) are recommended as primary substitutes for the obsolete BAV20. Both parts maintain the 150 V / 200 mA electrical specification, DO-35 through-hole package compatibility, and achieve ROHS3 compliance. The 1N3595TR provides identical forward voltage characteristics (1 V @ 200 mA), while the BAX16TR offers lower forward voltage at lower test current (650 mV @ 1 mA). Both parts are in active production status with substantial inventory availability.

For Enhanced Current Capacity Applications:

The BAV20,113, BAV20,133, and BAV20,143 variants provide 250 mA current rating while maintaining 150 V reverse voltage and 50 ns recovery time. These parts are manufactured by Nexperia/NXP and offer active product status. The BAV20,143 and BAV20,113 achieve ROHS3 compliance. These variants are suitable for applications requiring higher current margins or thermal headroom.

For Surface Mount Integration:

The BAV20W-7-F (Diodes Incorporated) provides equivalent 150 V rating with enhanced 400 mA current capacity in SOD-123 surface mount packaging. This part is ROHS3 compliant and active in production, suitable for new PCB designs requiring compact form factors.

For Lower Voltage Applications (125 V Maximum):

The FDH300A and FDH300ATR (onsemi) are suitable substitutes where application voltage does not exceed 125 V. Both maintain 200 mA current rating, DO-35 package compatibility, and ROHS3 compliance. These parts are in active production with good inventory availability.

Compliance Considerations:

Parts selected for new designs should prioritize ROHS3 compliance. The following substitutes meet this requirement: 1N3595TR, BAV20,113, BAV20,143, BAX16TR, FDH300A, FDH300ATR, and BAV20W-7-F. The BAV20,133 (NXP) does not specify RoHS status in available documentation.

Frequently Asked Questions (FAQ)

Q: Can the BAV20 be directly replaced with the 1N3595?

A: The 1N3595 (Microchip Technology) is electrically compatible for most applications but operates at a maximum reverse voltage of 125 V compared to the BAV20's 150 V rating. Direct substitution is acceptable only in circuits where the applied reverse voltage does not exceed 125 V. For applications requiring the full 150 V rating, use 1N3595TR (onsemi) instead, which maintains the 150 V specification.

Q: What is the difference between BAV20,113, BAV20,133, and BAV20,143?

A: All three parts share identical electrical specifications: 150 V reverse voltage, 250 mA current rating, 1.25 V forward voltage @ 200 mA, and 50 ns recovery time. The primary differences are manufacturer (Nexperia vs. NXP) and packaging format (Cut Tape vs. Bulk). BAV20,113 and BAV20,143 are Nexperia products with ROHS3 compliance. BAV20,133 is an NXP product. All three are suitable direct substitutes for the BAV20 in through-hole applications.

Q: Why would I choose BAX16TR over 1N3595TR as a substitute?

A: Both parts maintain 150 V / 200 mA ratings and DO-35 through-hole packaging. The BAX16TR exhibits lower forward voltage (650 mV @ 1 mA) compared to 1N3595TR (1 V @ 200 mA), resulting in reduced power dissipation in high-frequency switching applications. However, the 1N3595TR provides faster recovery time (3 µs vs. 120 ns for BAX16TR). Selection depends on application requirements: choose BAX16TR for low-power dissipation priority, or 1N3595TR for faster switching priority.

Q: Can I use FDH300A or FDH300ATR as a substitute for the BAV20?

A: The FDH300A and FDH300ATR are suitable substitutes only for applications where the maximum reverse voltage does not exceed 125 V. Both parts maintain 200 mA current rating and DO-35 package compatibility with ROHS3 compliance. If your circuit operates at voltages between 125 V and 150 V, these parts are not appropriate substitutes. Use 1N3595TR, BAX16TR, or BAV20,113 instead.

Q: Is the BAV20W-7-F a suitable substitute if my PCB uses through-hole mounting?

A: No. The BAV20W-7-F is a surface mount device in SOD-123 package and cannot be directly installed in through-hole PCB designs without redesign of the board layout and footprint. This part is suitable only for new designs utilizing surface mount technology. For through-hole applications, select from the through-hole alternatives: 1N3595TR, BAX16TR, BAV20,113, BAV20,143, or FDH300A/FDH300ATR.

Q: What is the advantage of using BAV20,113 or BAV20,143 over 1N3595TR?

A: The BAV20,113 and BAV20,143 provide 250 mA current capacity compared to 1N3595TR's 200 mA, offering 25% additional current margin. Both maintain identical 150 V reverse voltage and 50 ns recovery time. The enhanced current rating provides thermal headroom and allows operation at higher power levels without exceeding device limits. Both parts achieve ROHS3 compliance and are in active production.

Q: Are all substitute parts ROHS3 compliant?

A: No. The following substitutes are confirmed ROHS3 compliant: 1N3595TR, BAV20,113, BAV20,143, BAX16TR, FDH300A, FDH300ATR, and BAV20W-7-F. The BAV20,133 (NXP) does not specify RoHS status in available documentation. For new designs subject to RoHS compliance requirements, select from the confirmed ROHS3 compliant alternatives.

Q: What is the inventory status of substitute parts?

A: All listed substitute parts are in active production with substantial new original inventory: 1N3595TR (50,821 pcs), BAV20,113 (40,300 pcs), BAV20,143 (5,551 pcs), BAX16TR (11,188 pcs), FDH300A (8,581 pcs), FDH300ATR (4,200 pcs), and BAV20W-7-F (9,603 pcs). The original BAV20 remains available with 5,200 pieces in stock but is classified as obsolete.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message