SF26-TP Equivalent & Substitute Parts

Part Overview

The SF26-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 2 A average rectified current in a DO-15 through-hole package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The SF26-TP features fast recovery characteristics with a reverse recovery time of 35 nanoseconds, suitable for applications requiring efficient switching performance at moderate voltage and current levels.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 2 A	V
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V	µA
Mounting Type	Through Hole	-
Package / Case	DO-204AC, DO-15, Axial	-
Operating Temperature - Junction	-55°C ~ 125°C	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the SF26-TP is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): 400 V minimum
Current - Average Rectified (Io): 2 A minimum
Voltage - Forward (Vf) (Max) @ If: Must not exceed application requirements
Reverse Recovery Time (trr): Fast recovery characteristics preferred for switching applications
Current - Reverse Leakage @ Vr: 5 µA @ 400 V or lower

Mechanical Compatibility Criteria:

Mounting Type: Through Hole
Package / Case: DO-204AC, DO-15, or Axial equivalent
Operating Temperature Range: Must accommodate application requirements

Compliance Criteria:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped into two categories: direct equivalents from the same manufacturer with identical electrical specifications, and cross-manufacturer alternatives meeting or exceeding the electrical and mechanical requirements.

Parameter Comparison

Parameter	SF26-TP (Main)	SF26G-TP (Direct Equivalent)	2A04G A0G (Cross-Manufacturer)
Manufacturer	Micro Commercial Co	Micro Commercial Co	Taiwan Semiconductor Corporation
Product Status	Obsolete	Active	Active
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V
Current - Average Rectified (Io)	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 2 A	1.3 V @ 2 A	1 V @ 2 A
Reverse Recovery Time (trr)	35 ns	35 ns	Not specified
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Standard Recovery > 500ns, > 200mA
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V
Capacitance @ Vr, F	30 pF @ 4V, 1MHz	30 pF @ 4V, 1MHz	15 pF @ 4V, 1MHz
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial
Operating Temperature - Junction	-55°C ~ 125°C	-65°C ~ 150°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Bulk	Tape & Reel (TR)	Bulk

Engineering Selection Recommendations

SF26G-TP (Recommended Primary Substitute)

The SF26G-TP is the direct equivalent replacement for the obsolete SF26-TP. Both parts are manufactured by Micro Commercial Co and share identical electrical specifications, including 400 V reverse voltage rating, 2 A average rectified current, 1.3 V forward voltage drop at 2 A, and 35 nanosecond reverse recovery time. The SF26G-TP maintains active product status, ensuring long-term availability and supply chain continuity. The part is ROHS3 compliant and features an expanded operating temperature range of -65°C to 150°C compared to the SF26-TP's -55°C to 125°C range. The primary difference is packaging format: SF26G-TP is supplied in Tape & Reel (TR) configuration, whereas the original SF26-TP was supplied in bulk packaging. This substitute is suitable for direct replacement in all applications where the SF26-TP was previously used.

2A04G A0G (Cross-Manufacturer Alternative)

The 2A04G A0G, manufactured by Taiwan Semiconductor Corporation, provides an alternative substitute meeting the core electrical requirements of 400 V reverse voltage and 2 A average rectified current. This part exhibits a lower forward voltage drop of 1 V at 2 A compared to the SF26-TP's 1.3 V, resulting in reduced power dissipation in rectification applications. However, the 2A04G A0G is classified as a standard recovery diode with recovery time exceeding 500 nanoseconds, compared to the SF26-TP's fast recovery specification of 35 nanoseconds. This difference affects switching performance and makes the 2A04G A0G suitable only for applications where fast recovery is not a critical requirement. The part is ROHS3 compliant and supports an operating temperature range of -55°C to 150°C. Selection of this substitute requires verification that standard recovery characteristics are acceptable for the intended application.

Frequently Asked Questions (FAQ)

Q: Can SF26G-TP be used as a direct replacement for SF26-TP?

A: Yes. The SF26G-TP is a direct equivalent with identical electrical specifications. Both parts are rated for 400 V reverse voltage, 2 A average rectified current, 1.3 V forward voltage drop at 2 A, and 35 nanosecond reverse recovery time. The primary difference is packaging format (Tape & Reel versus bulk). The SF26G-TP is the recommended substitute due to its active product status and expanded operating temperature range.

Q: What is the key difference between SF26G-TP and 2A04G A0G?

A: The SF26G-TP is a fast recovery diode with 35 nanosecond reverse recovery time, while the 2A04G A0G is a standard recovery diode with recovery time exceeding 500 nanoseconds. The 2A04G A0G also exhibits lower forward voltage drop (1 V versus 1.3 V at 2 A). These differences affect switching speed and power dissipation characteristics. Selection depends on application requirements for recovery speed.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both SF26G-TP and 2A04G A0G are ROHS3 compliant, matching the compliance status of the original SF26-TP. All parts have Moisture Sensitivity Level 1 (Unlimited).

Q: What is the operating temperature range difference between SF26-TP and its substitutes?

A: The original SF26-TP operates from -55°C to 125°C. The SF26G-TP extends this range to -65°C to 150°C, providing broader temperature capability. The 2A04G A0G operates from -55°C to 150°C. Applications requiring operation below -55°C or above 125°C should use SF26G-TP or 2A04G A0G accordingly.

Q: Can the 2A04G A0G be used in high-speed switching applications?

A: The 2A04G A0G is not recommended for high-speed switching applications. Its standard recovery classification (>500 ns) makes it unsuitable for applications requiring fast switching transitions. The SF26G-TP, with its 35 nanosecond recovery time, is the appropriate choice for fast switching applications.

Q: What packaging formats are available for these substitutes?

A: The SF26-TP and 2A04G A0G are supplied in bulk packaging. The SF26G-TP is supplied in Tape & Reel (TR) format. All three parts use DO-15 (DO-204AC) axial through-hole packages, ensuring mechanical compatibility.

Q: Are there inventory considerations when selecting a substitute?

A: Current inventory levels are: SF26-TP (1117 pcs), SF26G-TP (965 pcs), and 2A04G A0G (784 pcs). All parts are available as new original stock. Procurement decisions should account for application requirements and long-term availability, with SF26G-TP recommended due to its active product status.

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