RL204-AP General Purpose Rectifier Diode Equivalent & Substitute Parts

Part Overview

The RL204-AP 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 component is classified as obsolete, indicating that direct procurement from the original manufacturer is no longer available. Identifying equivalent and substitute parts ensures design continuity and maintains supply chain reliability for applications requiring 400 V, 2 A rectification capability.

Substiute Parts

RL204-AP

Micro Commercial CoIn Stock: 858RL204-AP Datasheet

Current PartRFQ

2A04GHB0G

Taiwan Semiconductor CorporationIn Stock: 11272A04GHB0G Datasheet

UpgradeRFQ

2A04G A0G

Taiwan Semiconductor CorporationIn Stock: 8842A04G A0G Datasheet

Parametric EquivalentRFQ

2A04GHA0G

Taiwan Semiconductor CorporationIn Stock: 10542A04GHA0G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RL204-AP is determined by electrical and mechanical parameter equivalence. The critical parameters that define substitutability are:

• Voltage - DC Reverse (Vr) (Max): 400 V minimum
• Current - Average Rectified (Io): 2 A minimum
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 2 A maximum
• Speed: Standard Recovery >500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: 5 µA @ 400 V maximum
• Mounting Type: Through Hole
• Package / Case: DO-204AC, DO-15, Axial compatible
• Operating Temperature - Junction: -55°C ~ 150°C minimum
• RoHS Status: ROHS3 Compliant

All substitute parts listed meet or exceed these electrical specifications and maintain mechanical compatibility through identical or equivalent package designations. Substitute parts are grouped into two categories: upgrade parts with enhanced qualifications and parametric equivalents with identical electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

For Standard Applications:

The 2A04G A0G manufactured by Taiwan Semiconductor Corporation is a direct parametric equivalent to the RL204-AP. This part maintains identical electrical specifications across all critical parameters including reverse voltage, forward current, forward voltage drop, recovery speed, and reverse leakage current. The 2A04G A0G is in active production status, ensuring long-term availability and supply chain stability. This part is suitable for applications where standard-grade rectification is required.

For Automotive and High-Reliability Applications:

The 2A04GHB0G and 2A04GHA0G, both manufactured by Taiwan Semiconductor Corporation, are upgrade alternatives that provide automotive-grade qualification under AEC-Q101 standard. These parts maintain all electrical equivalence to the RL204-AP while offering enhanced reliability assurance through automotive qualification. The 2A04GHB0G and 2A04GHA0G are recommended for applications requiring automotive-grade components or where enhanced qualification documentation is mandated by design specifications.

All three substitute parts are in active production, ROHS3 compliant, and maintain identical through-hole mounting compatibility with the original RL204-AP package designation.

Frequently Asked Questions (FAQ)

Q: Can the 2A04G A0G be used as a direct replacement for the RL204-AP?

A: Yes. The 2A04G A0G meets all electrical and mechanical specifications of the RL204-AP. Both parts are rated for 400 V reverse voltage, 2 A average rectified current, 1 V forward voltage drop at 2 A, and operate across the -55°C to 150°C temperature range. Both use identical DO-15 through-hole axial packaging. The 2A04G A0G is in active production, addressing the obsolescence of the RL204-AP.

Q: What is the difference between the 2A04G A0G and the 2A04GHB0G?

A: The primary difference is qualification status. The 2A04GHB0G carries automotive-grade qualification under AEC-Q101, while the 2A04G A0G is standard-grade. Both parts are electrically identical in all critical parameters. The 2A04GHB0G is selected when automotive qualification is required by design specifications or customer requirements.

Q: Are the substitute parts compatible with the original RL204-AP PCB layout?

A: Yes. All substitute parts use the DO-15 through-hole axial package, which is mechanically identical to the RL204-AP. No PCB layout modifications are required for substitution.

Q: What does the lower capacitance value (15 pF versus 20 pF) in the substitute parts indicate?

A: The substitute parts exhibit lower junction capacitance at the specified measurement conditions. This parameter difference does not affect substitutability, as both values fall within acceptable ranges for general purpose rectification applications. Lower capacitance may provide marginal benefits in high-frequency switching applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the compliance status of the original RL204-AP.

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

A: For new designs requiring standard rectification, the 2A04G A0G is the appropriate selection due to active production status and full electrical equivalence. For automotive applications or designs requiring enhanced qualification documentation, the 2A04GHB0G or 2A04GHA0G are the appropriate selections.