1N486B Equivalent & Substitute Parts

Part Overview

The 1N486B is a general-purpose rectifier diode manufactured by onsemi, rated for 250 V DC reverse voltage and 200 mA average rectified current in a DO-35 through-hole package. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and procurement continuity. Equivalent parts maintain identical electrical specifications, while substitute parts provide functional alternatives with modified parameters suitable for the same application categories.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	250 V
Current - Average Rectified (Io)	200 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 100 mA
Current - Reverse Leakage @ Vr	50 nA @ 225 V
Speed Classification	Small Signal ≤ 200mA (Io), Any Speed
Mounting Type	Through Hole
Package / Case	DO-204AH, DO-35, Axial
Operating Temperature - Junction (Max)	175°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the 1N486B are classified into two categories based on electrical parameter alignment:

Direct Equivalent Category: Parts maintaining identical voltage and current ratings (250 V, 200 mA) with active product status and modern compliance certifications. These parts satisfy the core functional requirements of the 1N486B without parameter derating.

Functional Substitute Category: Parts with modified voltage or current ratings that remain suitable for applications where the 1N486B operates below maximum specifications. These substitutes provide enhanced performance margins or alternative packaging options while maintaining through-hole mounting compatibility.

The critical parameters determining substitution validity are:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 250 V
Current - Average Rectified (Io): Must equal or exceed 200 mA
Mounting Type: Through Hole (required)
Package / Case: DO-35 or equivalent axial configuration

Parameter Comparison

Parameter	1N486B (onsemi)	BAV21 A0G (TSC)	1N486B (Microchip)	BAV21,113 (Nexperia)	BAV21,133 (Nexperia)	BAV21,143 (Nexperia)
Voltage - DC Reverse (Vr) (Max)	250 V	250 V	250 V	200 V	200 V	200 V
Current - Average Rectified (Io)	200 mA	200 mA	200 mA	250 mA	250 mA	250 mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 100 mA	1.25 V @ 200 mA	1 V @ 100 mA	1.25 V @ 200 mA	1.25 V @ 200 mA	1.25 V @ 200 mA
Current - Reverse Leakage @ Vr	50 nA @ 225 V	100 nA @ 250 V	1 µA @ 250 V	100 nA @ 200 V	100 nA @ 200 V	100 nA @ 200 V
Speed Classification	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed	Small Signal ≤ 200mA (Io), Any Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	Not specified	Not specified	Not specified	50 ns	50 ns	50 ns
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial	DO-204AH, DO-35, Axial
Operating Temperature - Junction	175°C (Max)	-55°C ~ 175°C	-65°C ~ 175°C	175°C (Max)	175°C (Max)	175°C (Max)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent Selection:

The BAV21 A0G manufactured by Taiwan Semiconductor Corporation provides the closest functional equivalent to the 1N486B. This part maintains identical voltage (250 V) and current (200 mA) ratings with active product status and ROHS3 compliance. The BAV21 A0G is suitable for direct substitution in applications requiring 250 V reverse voltage rating and 200 mA average rectified current. Extended operating temperature range (-55°C to 175°C) provides additional thermal margin compared to the original specification.

The 1N486B manufactured by Microchip Technology offers an alternative equivalent with identical electrical specifications at the rated conditions (1 V @ 100 mA forward voltage). This part maintains active product status but carries RoHS non-compliant designation. Selection of this part requires verification of compliance requirements in the target application.

Functional Substitute Selection:

The BAV21,113, BAV21,133, and BAV21,143 manufactured by Nexperia USA Inc. provide functional substitutes with enhanced current rating (250 mA versus 200 mA) and fast recovery characteristics (50 ns reverse recovery time). These parts operate at reduced reverse voltage rating (200 V versus 250 V), suitable for applications where the 1N486B operates below maximum voltage specification. All three Nexperia variants carry ROHS3 compliance and active product status. Selection among these three variants depends on packaging and inventory requirements, as electrical specifications are identical.

Applications requiring strict 250 V reverse voltage rating must use either the BAV21 A0G or Microchip 1N486B equivalent. Applications tolerating 200 V reverse voltage may select Nexperia variants for enhanced current capacity and faster switching characteristics.

Frequently Asked Questions (FAQ)

Q: Can the BAV21 A0G directly replace the 1N486B in all applications?

A: The BAV21 A0G maintains identical voltage (250 V) and current (200 mA) ratings with compatible DO-35 through-hole packaging. Direct substitution is valid for applications operating within these specifications. The extended operating temperature range of the BAV21 A0G (-55°C to 175°C) provides additional thermal margin.

Q: What is the difference between the Nexperia BAV21,113, BAV21,133, and BAV21,143 variants?

A: These three parts are electrically identical, with specifications of 200 V reverse voltage, 250 mA average rectified current, and 50 ns reverse recovery time. Differences exist only in packaging configuration (Cut Tape variant designations) and inventory availability. Selection among these variants depends on procurement and assembly requirements rather than electrical performance.

Q: Can Nexperia BAV21 variants substitute for the 1N486B in high-voltage applications?

A: Nexperia BAV21 variants are rated for 200 V maximum reverse voltage, compared to the 1N486B rating of 250 V. These parts are suitable only for applications where the circuit operates below 200 V reverse voltage. Applications requiring the full 250 V rating must use the BAV21 A0G or Microchip 1N486B equivalent.

Q: What compliance certifications should be considered when selecting a substitute?

A: The BAV21 A0G and all Nexperia variants carry ROHS3 compliance certification. The Microchip 1N486B is designated as RoHS non-compliant. Selection depends on the target application's compliance requirements. All parts maintain REACH Unaffected status and EAR99 export classification.

Q: Are there package compatibility considerations between substitute parts?

A: All listed parts utilize DO-35 through-hole axial packaging (DO-204AH designation). Physical dimensions and lead spacing are compatible across all substitutes. Nexperia variants are supplied in Cut Tape packaging, while the BAV21 A0G and Microchip 1N486B may be available in alternative packaging formats. Verify supplier packaging specifications for assembly compatibility.

Q: How does forward voltage drop differ between the 1N486B and substitute parts?

A: The 1N486B and Microchip 1N486B specify 1 V maximum forward voltage at 100 mA. The BAV21 A0G and Nexperia variants specify 1.25 V maximum forward voltage at 200 mA. This 0.25 V difference may affect power dissipation in high-current applications. Circuit designs sensitive to forward voltage drop should account for this parameter variation.

Q: What is the significance of reverse recovery time in the Nexperia variants?

A: Nexperia BAV21 variants specify 50 ns reverse recovery time with fast recovery classification. The original 1N486B does not specify reverse recovery time. Fast recovery characteristics reduce switching losses in high-frequency applications. Applications operating at low switching frequencies are unaffected by this parameter difference.

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