SF28G-TP Equivalent & Substitute Parts

Part Overview

The SF28G-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 600 V DC reverse voltage and 2 A average rectified current in a DO-15 through-hole package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and compliance certifications align with the original specification, enabling direct replacement in circuit applications without design modification.

Substiute Parts

SF28G-TP

Micro Commercial CoIn Stock: 1004SF28G-TP Datasheet

Current PartRFQ

EGP20J

Fairchild SemiconductorIn Stock: 27391EGP20J Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SF28G-TP are identified based on strict electrical and mechanical parameter equivalence. The primary substitution criteria are:

Electrical Parameters (Must Match):

• Voltage - DC Reverse (Vr) (Max): 600 V
• Current - Average Rectified (Io): 2 A
• Voltage - Forward (Vf) (Max) @ If: 1.7 V @ 2 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Parameters (Must Match):

• Package / Case: DO-204AC, DO-15, Axial
• Mounting Type: Through Hole

Compliance Parameters (Must Match):

• Product Status: Active
• Operating Temperature Range: -65°C to 150°C

The EGP20J from Fairchild Semiconductor meets all core electrical and mechanical requirements for direct substitution. Minor variations in reverse recovery time (75 ns vs. 35 ns) and junction capacitance (45 pF vs. 30 pF) remain within acceptable tolerance for general-purpose rectification applications and do not preclude functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

SF28G-TP (Primary Part): The SF28G-TP is the original specification component. It is Active product status, RoHS3 compliant, and REACH unaffected. This part is suitable for new designs and applications requiring the specified electrical and thermal characteristics. Current inventory is 939 pieces in tape and reel packaging.

EGP20J (Substitute Part): The EGP20J is a parametric equivalent suitable for direct replacement in existing designs or as an alternative source. It maintains Active product status and equivalent compliance certifications (EAR99, HTSUS 8541.10.0080). The EGP20J exhibits slightly longer reverse recovery time (75 ns vs. 35 ns) and higher junction capacitance (45 pF vs. 30 pF), which remain within acceptable operating margins for general-purpose rectification. Bulk packaging is available with higher inventory (27,290 pieces), providing supply flexibility. Both parts operate across the identical temperature range (-65°C to 150°C) and share the same DO-15 through-hole package footprint.

Frequently Asked Questions (FAQ)

Q: Can the EGP20J replace the SF28G-TP in existing circuit designs?

A: Yes. The EGP20J is a parametric equivalent with matching voltage rating (600 V), current rating (2 A), forward voltage drop (1.7 V @ 2 A), and package type (DO-15 through-hole). Both components are classified as fast recovery diodes and operate across the same temperature range (-65°C to 150°C). Direct substitution is supported without circuit modification.

Q: What is the significance of the reverse recovery time difference (35 ns vs. 75 ns)?

A: Reverse recovery time (trr) affects switching speed and switching losses in high-frequency applications. The SF28G-TP exhibits faster recovery (35 ns) compared to the EGP20J (75 ns). For general-purpose rectification at standard line frequencies (50/60 Hz) and moderate switching frequencies, both values are acceptable. Applications requiring optimized switching performance at elevated frequencies should prioritize the SF28G-TP.

Q: Are there packaging differences between these parts?

A: Both parts use the DO-15 through-hole package with identical mechanical footprint (DO-204AC, Axial). The SF28G-TP is supplied in tape and reel (TR) packaging, while the EGP20J is supplied in bulk packaging. This difference affects handling and automated assembly processes but does not impact electrical performance or board-level compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SF28G-TP and EGP20J are classified as Active product status, share the same ECCN code (EAR99), and the same HTSUS classification (8541.10.0080). The SF28G-TP carries RoHS3 compliance and REACH unaffected status. Compliance documentation should be verified with the respective manufacturer for the EGP20J if required for specific applications.

Q: What is the difference in junction capacitance, and does it matter?

A: The SF28G-TP has 30 pF junction capacitance at 4 V, 1 MHz, while the EGP20J has 45 pF under the same conditions. Higher capacitance increases switching transients and may affect high-frequency circuit performance. For low-frequency and DC rectification applications, this difference is negligible. High-frequency switching applications should evaluate the impact on circuit performance.

Q: Which part should be selected for new designs?

A: The SF28G-TP is the primary specification component and is recommended for new designs. It offers faster reverse recovery time and lower junction capacitance, providing optimized performance across a broader range of operating conditions. The EGP20J is suitable as a secondary source or when supply constraints require alternative sourcing.