SF56-TP Equivalent & Substitute Parts

Part Overview

The SF56-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 5 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 production continuity. Substitute parts must maintain electrical performance within the specified parameter ranges while accommodating different packaging formats and manufacturer sources.

Substiute Parts

SF56-TP

Micro Commercial CoIn Stock: 1016SF56-TP Datasheet

Current PartRFQ

SF56G-TP

Micro Commercial CoIn Stock: 932SF56G-TP Datasheet

DirectRFQ

ER504_R2_00001

Panjit International Inc.In Stock: 1111ER504_R2_00001 Datasheet

Parametric EquivalentRFQ

UF504IG_AY_00001

Panjit International Inc.In Stock: 870UF504IG_AY_00001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SF56-TP are classified into two categories based on electrical and mechanical compatibility:

Direct Manufacturer Substitute: SF56G-TP maintains identical base product lineage from Micro Commercial Co with matching electrical specifications and DO-201AD package geometry. This part differs only in packaging format (Tape & Reel versus bulk) and product status (Active versus Obsolete).

Parametric Equivalents: ER504_R2_00001 and UF504IG_AY_00001 from Panjit International Inc. provide functional equivalence through matching critical electrical parameters: 400 V reverse voltage rating, 5 A average rectified current, DO-201AD package, and fast recovery speed classification. These parts satisfy the core substitution criteria of voltage, current, and package compatibility.

Substitution eligibility is determined by the following parameters:

• Voltage - DC Reverse (Vr) (Max): 400 V (exact match required)
• Current - Average Rectified (Io): 5 A (exact match required)
• Package / Case: DO-201AD, Axial (exact match required)
• Mounting Type: Through Hole (exact match required)
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io) (exact match required)

Parameter Comparison

Engineering Selection Recommendations

SF56G-TP is the primary substitute for SF56-TP applications. Both parts share identical electrical specifications and manufacturer lineage. SF56G-TP carries Active product status, ensuring long-term availability and supply chain continuity. The extended operating temperature range (-65°C to 150°C versus -55°C to 150°C) provides additional thermal margin. Selection of SF56G-TP requires only packaging format accommodation, as it is supplied in Tape & Reel format rather than bulk.

ER504_R2_00001 and UF504IG_AY_00001 serve as secondary parametric equivalents from an alternative manufacturer. Both parts maintain the critical electrical parameters of 400 V reverse voltage, 5 A average rectified current, and fast recovery speed classification. ER504_R2_00001 offers improved reverse leakage characteristics (1 µA versus 5 µA) and is available in Cut Tape packaging. UF504IG_AY_00001 provides equivalent performance with Tape & Box packaging and carries a slightly higher reverse recovery time specification (50 ns versus 35 ns), which remains within the fast recovery classification threshold.

All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), matching the regulatory and environmental requirements of the original SF56-TP.

Frequently Asked Questions (FAQ)

Q: Can SF56G-TP directly replace SF56-TP in existing designs?

A: Yes. SF56G-TP maintains identical electrical specifications and DO-201AD package geometry. The only difference is packaging format (Tape & Reel versus bulk). Circuit performance and PCB layout remain unchanged.

Q: What is the difference between the Panjit parts (ER504_R2_00001 and UF504IG_AY_00001)?

A: Both Panjit parts meet the core electrical requirements of 400 V, 5 A, and fast recovery speed. ER504_R2_00001 features 35 ns reverse recovery time and Cut Tape packaging. UF504IG_AY_00001 features 50 ns reverse recovery time and Tape & Box packaging. Both reverse recovery times satisfy the fast recovery classification (≤ 500ns, > 200mA).

Q: Does reverse leakage current variation affect substitution?

A: Reverse leakage current is not a substitution-limiting parameter for these parts. SF56-TP and SF56G-TP specify 5 µA @ 400 V, while ER504_R2_00001 and UF504IG_AY_00001 specify 1 µA @ 400 V. Lower leakage current represents improved performance and does not create compatibility issues.

Q: Are there packaging considerations when switching from SF56-TP to SF56G-TP?

A: Yes. SF56-TP is supplied in bulk packaging, while SF56G-TP is supplied in Tape & Reel format. Automated assembly equipment must be configured for the appropriate tape specifications. Manual assembly processes are unaffected.

Q: What is the significance of the operating temperature range difference in SF56G-TP?

A: SF56G-TP extends the lower operating temperature limit to -65°C compared to SF56-TP at -55°C. This provides additional thermal margin for applications operating in cold environments. The upper limit remains 150°C for both parts.

Q: Can ER504_R2_00001 and UF504IG_AY_00001 be used interchangeably?

A: Both parts satisfy the electrical requirements for SF56-TP substitution. Selection between them depends on packaging format preference (Cut Tape versus Tape & Box) and reverse recovery time tolerance. The 15 ns difference in reverse recovery time (35 ns versus 50 ns) remains within the fast recovery speed classification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. SF56G-TP, ER504_R2_00001, and UF504IG_AY_00001 are all ROHS3 compliant, matching the regulatory status of the original SF56-TP.