ER302-AP Equivalent & Substitute Parts

Part Overview

The ER302-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. This part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical and mechanical compatibility while meeting current availability and compliance standards.

Substiute Parts

ER302-AP

Micro Commercial CoIn Stock: 921ER302-AP Datasheet

Current PartRFQ

SF34G-AP

Micro Commercial CoIn Stock: 1149SF34G-AP Datasheet

DirectRFQ

SF34G A0G

Taiwan Semiconductor CorporationIn Stock: 896SF34G A0G Datasheet

Parametric EquivalentRFQ

SF34GHA0G

Taiwan Semiconductor CorporationIn Stock: 732SF34GHA0G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ER302-AP is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 3 A
• Voltage - Forward (Vf) (Max) @ If: 950 mV @ 3 A
• Reverse Recovery Time (trr): 35 ns
• Current - Reverse Leakage @ Vr: 5 µA @ 200 V
• Speed Classification: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Mechanical Equivalence Requirements:

• Package / Case: DO-201AD, Axial
• Mounting Type: Through Hole

Compliance Requirements:

• RoHS Status: ROHS3 Compliant

All substitute parts listed maintain these parameters within the specified tolerances. Variations in capacitance at Vr and operating temperature range do not affect functional substitution for standard rectification applications.

Parameter Comparison

Engineering Selection Recommendations

SF34G-AP (Micro Commercial Co): This direct manufacturer equivalent is the primary substitute for ER302-AP. Both parts originate from Micro Commercial Co and maintain identical electrical specifications. SF34G-AP carries active product status and is available in Tape & Box packaging. The extended operating temperature range (-65°C to 150°C) provides additional thermal margin compared to the original part. This option is suitable for standard industrial and commercial applications requiring direct form-factor compatibility.

SF34G A0G (Taiwan Semiconductor Corporation): This parametric equivalent maintains all critical electrical specifications and is actively produced by Taiwan Semiconductor Corporation. Available in Cut Tape packaging, this part is suitable for high-volume automated assembly processes. The operating temperature range matches the original specification (-55°C to 150°C). Selection of this part is appropriate when supply chain diversification or specific packaging requirements necessitate a second-source alternative.

SF34GHA0G (Taiwan Semiconductor Corporation): This variant is AEC-Q101 qualified and carries automotive-grade designation. It maintains all electrical and mechanical equivalence parameters while meeting automotive qualification standards. This part is appropriate for applications requiring automotive-grade components or when AEC-Q101 compliance is mandated by design specifications or customer requirements.

Frequently Asked Questions (FAQ)

Q: Can SF34G-AP be used as a direct replacement for ER302-AP in existing designs?

A: Yes. SF34G-AP maintains identical electrical specifications (200 V, 3 A, 950 mV forward voltage, 35 ns recovery time) and mechanical compatibility (DO-201AD axial through-hole package). Both parts are ROHS3 compliant. The primary difference is product status: ER302-AP is obsolete while SF34G-AP is active.

Q: What is the difference between SF34G A0G and SF34GHA0G?

A: Both parts maintain identical electrical and mechanical specifications. SF34GHA0G carries AEC-Q101 automotive qualification and automotive-grade designation, while SF34G A0G does not. Selection depends on whether automotive qualification is required for the application.

Q: Are there packaging differences between the substitute parts?

A: Yes. SF34G-AP is supplied in Tape & Box (TB) packaging, while SF34G A0G is supplied in Cut Tape (CT) packaging. SF34GHA0G packaging is not specified in available data. Packaging selection should align with assembly process requirements and inventory management practices.

Q: Does the capacitance variation between substitute parts affect circuit performance?

A: Capacitance values range from 35 pF (ER302-AP) to 80 pF (SF34G A0G and SF34GHA0G) at 4 V, 1 MHz. This parameter does not determine substitution equivalence for standard rectification applications. Capacitance variations are acceptable for general-purpose rectifier diode applications unless specific circuit design constraints require capacitance matching.

Q: Which substitute part should be selected for new designs?

A: SF34G-AP is the recommended primary choice for new designs due to identical manufacturer origin and active product status. For applications requiring automotive qualification, SF34GHA0G is appropriate. For high-volume automated assembly with cut-tape packaging requirements, SF34G A0G is suitable.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. ER302-AP and all listed substitute parts (SF34G-AP, SF34G A0G, SF34GHA0G) are ROHS3 compliant.