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FR504-TP Equivalent & Substitute Parts
Part Overview
The FR504-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 component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing procurement and design continuity. The FR504-TP features fast recovery characteristics with a reverse recovery time of 150 ns, making it suitable for standard rectification applications requiring moderate switching speeds.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - DC Reverse (Vr) (Max) | 400 | V |
| Current - Average Rectified (Io) | 5 | A |
| Voltage - Forward (Vf) (Max) @ If | 1.35 @ 5 A | V |
| Reverse Recovery Time (trr) | 150 | ns |
| Current - Reverse Leakage @ Vr | 10 @ 400 V | µA |
| Capacitance @ Vr, F | 65 @ 4V, 1MHz | pF |
| Package / Case | DO-201AD, Axial | — |
| Operating Temperature - Junction | -55 to 150 | °C |
| Technology | Standard | — |
| RoHS Status | ROHS3 Compliant | — |
Substitute Part Grouping Explanation
Substitution of the FR504-TP is determined by electrical and mechanical parameter equivalence. The primary substitute, FR504GP-TP, maintains identical electrical specifications across all critical parameters: 400 V reverse voltage rating, 5 A average rectified current, 1.35 V forward voltage drop at 5 A, 150 ns reverse recovery time, 10 µA reverse leakage current at 400 V, and 65 pF junction capacitance. Both parts utilize the DO-201AD axial through-hole package, ensuring mechanical and thermal compatibility.
The key differentiator between the main part and its substitute is product status and packaging format. The FR504-TP is obsolete and supplied in standard packaging, while FR504GP-TP is active and supplied in Tape & Reel (TR) format. Both parts share the same base product number (FR504) and maintain ROHS3 compliance with unlimited moisture sensitivity level (MSL 1).
Parameter Comparison
| Parameter | FR504-TP (Main) | FR504GP-TP (Substitute) | Match Status |
|---|---|---|---|
| Manufacturer | Micro Commercial Co | Micro Commercial Co | Identical |
| Category | Diodes, Rectifiers | Diodes, Rectifiers | Identical |
| Voltage - DC Reverse (Vr) (Max) | 400 V | 400 V | Identical |
| Current - Average Rectified (Io) | 5 A | 5 A | Identical |
| Voltage - Forward (Vf) (Max) @ If | 1.35 V @ 5 A | 1.35 V @ 5 A | Identical |
| Speed | Fast Recovery ≤ 500ns, > 200mA (Io) | Fast Recovery ≤ 500ns, > 200mA (Io) | Identical |
| Reverse Recovery Time (trr) | 150 ns | 150 ns | Identical |
| Current - Reverse Leakage @ Vr | 10 µA @ 400 V | 10 µA @ 400 V | Identical |
| Capacitance @ Vr, F | 65 pF @ 4V, 1MHz | 65 pF @ 4V, 1MHz | Identical |
| Package / Case | DO-201AD, Axial | DO-201AD, Axial | Identical |
| Operating Temperature - Junction | -55°C ~ 150°C | -55°C ~ 150°C | Identical |
| Technology | Standard | Standard | Identical |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Identical |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | Identical |
| Product Status | Obsolete | Active | Different |
| Packaging Format | Standard | Tape & Reel (TR) | Different |
Engineering Selection Recommendations
The FR504GP-TP is the direct equivalent substitute for the FR504-TP. Selection of FR504GP-TP is supported by complete electrical and mechanical parameter equivalence, identical ROHS3 compliance certification, and active product status. The FR504GP-TP is currently in production and available in standard inventory quantities, addressing the obsolescence status of the FR504-TP.
The packaging format difference (standard versus Tape & Reel) does not affect electrical performance or thermal characteristics. Selection between these formats depends on assembly process requirements and procurement volume. For applications requiring the FR504-TP, the FR504GP-TP provides full functional and physical compatibility without design modification.
Frequently Asked Questions (FAQ)
Q: Can FR504GP-TP be used as a direct replacement for FR504-TP in existing designs?
A: Yes. The FR504GP-TP is electrically and mechanically identical to the FR504-TP. All electrical parameters, including voltage rating, current capacity, forward voltage drop, reverse recovery time, and leakage current, are equivalent. The DO-201AD axial through-hole package is identical, permitting direct substitution without PCB modification.
Q: What is the difference between FR504-TP and FR504GP-TP?
A: The primary differences are product status and packaging format. The FR504-TP is obsolete and supplied in standard packaging. The FR504GP-TP is an active product supplied in Tape & Reel (TR) format for automated assembly. All electrical and thermal specifications are identical.
Q: Does the Tape & Reel packaging of FR504GP-TP affect performance?
A: No. Tape & Reel packaging is a supply format used for automated component placement. It does not alter the electrical characteristics, thermal performance, or reliability of the diode. The component itself is identical to standard packaging.
Q: Are both parts ROHS3 compliant?
A: Yes. Both FR504-TP and FR504GP-TP are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1), meeting environmental and regulatory requirements for industrial and commercial applications.
Q: What is the reverse recovery time specification, and why is it important?
A: Both parts have a reverse recovery time of 150 ns, classifying them as fast recovery diodes. This parameter defines the time required for the diode to transition from forward conduction to reverse blocking when the applied voltage reverses. Fast recovery characteristics reduce switching losses in rectification circuits.
Q: Can FR504GP-TP be used in high-temperature applications?
A: Yes. Both parts are rated for junction operating temperatures from -55°C to 150°C, supporting operation across industrial temperature ranges. Thermal management design should account for the 5 A current rating and forward voltage drop of 1.35 V at rated current.
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