RL104-N-2-4-AP Equivalent & Substitute Parts

Part Overview

The RL104-N-2-4-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 1 A average rectified current in an axial through-hole package. This component is classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing design and procurement requirements. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating packaging and recovery speed variations.

Substiute Parts

RL104-N-2-4-AP

Micro Commercial CoIn Stock: 945RL104-N-2-4-AP Datasheet

Current PartRFQ

EG 1V0

Sanken Electric USA Inc.In Stock: 795EG 1V0 Datasheet

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ES 1V

Sanken Electric USA Inc.In Stock: 1281ES 1V Datasheet

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EU 1V1

Sanken Electric USA Inc.In Stock: 686EU 1V1 Datasheet

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EU 2V1

Sanken Electric USA Inc.In Stock: 858EU 2V1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RL104-N-2-4-AP is determined by the following criteria:

Primary Compatibility Requirements:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 400 V
• Current - Average Rectified (Io): Must equal or exceed 1 A
• Mounting Type: Through Hole (axial package)
• Operating Temperature Range: Must accommodate -55°C to 150°C junction temperature or higher minimum

Secondary Compatibility Considerations:

• Forward voltage (Vf) characteristics affect power dissipation but do not preclude substitution
• Recovery speed classification (Standard vs. Fast) affects switching performance but does not prevent functional replacement
• Reverse leakage current variations are acceptable within general-purpose rectifier tolerances
• RoHS compliance status and packaging format (Tape & Reel vs. Tape & Box) are procurement considerations

Parts Meeting Full Substitution Criteria:

• EU 2V1: Matches 400 V, 1 A specifications with active product status and improved forward voltage characteristics
• EG 1V0: Matches 400 V voltage with 800 mA current rating (80% of required 1 A)
• ES 1V: Matches 400 V voltage with 700 mA current rating (70% of required 1 A)
• EU 1V1: Matches 400 V voltage with 250 mA current rating (25% of required 1 A)

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: EU 2V1

The EU 2V1 is the optimal substitute for the RL104-N-2-4-AP. This part maintains identical voltage (400 V) and current (1 A) ratings, ensuring direct electrical compatibility. The EU 2V1 carries active product status, eliminating obsolescence concerns. Both components are RoHS compliant and feature identical through-hole axial packaging. The EU 2V1 exhibits improved forward voltage characteristics (1.4 V vs. 1.1 V at 1 A), resulting in slightly higher power dissipation but within acceptable general-purpose rectifier performance margins. Fast recovery characteristics (≤500 ns) provide enhanced switching performance compared to the standard recovery specification of the original part.

Secondary Substitutes: EG 1V0, ES 1V, EU 1V1

These alternatives are suitable only for applications where the required average rectified current is lower than 1 A. The EG 1V0 (800 mA) and ES 1V (700 mA) provide reduced current capacity, while the EU 1V1 (250 mA) is limited to quarter-ampere applications. All three maintain the 400 V voltage rating and through-hole axial package format. Selection among these parts depends on actual circuit current requirements and thermal design margins. All substitute parts carry active product status and RoHS compliance.

Compliance and Certification:

All substitute parts maintain RoHS compliance status. The RL104-N-2-4-AP is ROHS3 compliant, while substitute parts carry standard RoHS compliance. All parts share identical ECCN (EAR99) and HTSUS classifications, facilitating regulatory and procurement continuity. Moisture sensitivity level remains at MSL 1 (Unlimited) across all alternatives.

Frequently Asked Questions (FAQ)

Q: Can EU 2V1 be used as a direct replacement for RL104-N-2-4-AP?

A: Yes. The EU 2V1 maintains identical voltage (400 V) and current (1 A) ratings, through-hole axial packaging, and operating temperature range compatibility. The part is active and RoHS compliant, eliminating obsolescence and regulatory concerns.

Q: What is the impact of higher forward voltage in substitute parts?

A: Forward voltage differences (1.1 V original vs. 1.4 V EU 2V1 at 1 A) result in increased power dissipation at the diode junction. For a 1 A circuit, this represents an additional 0.3 W dissipation. Thermal design must accommodate this increase, but the difference is within typical general-purpose rectifier operating margins.

Q: Are the lower-current alternatives (EG 1V0, ES 1V, EU 1V1) suitable for 1 A applications?

A: No. These parts are rated for 800 mA, 700 mA, and 250 mA respectively. Using an undersized diode in a 1 A circuit results in excessive current density, accelerated aging, and potential thermal runaway. Selection must match or exceed the actual circuit current requirement.

Q: What is the difference between Standard and Fast recovery classifications?

A: Standard recovery (>500 ns) and Fast recovery (≤500 ns) refer to reverse recovery time. Fast recovery diodes switch more rapidly, reducing switching losses in high-frequency applications. For low-frequency rectification, both classifications are functionally equivalent. The RL104-N-2-4-AP uses Standard recovery; EU 2V1 uses Fast recovery, providing improved performance without compatibility issues.

Q: Does the operating temperature range difference affect substitution?

A: The RL104-N-2-4-AP operates from -55°C to 150°C, while substitute parts operate from -40°C to 150°C. If the application requires operation below -40°C, substitute parts are not suitable. For standard industrial temperature ranges (-40°C to 85°C or -40°C to 125°C), all substitutes are compatible.

Q: What packaging format differences exist between substitute parts?

A: The RL104-N-2-4-AP uses standard packaging (format not specified). EU 2V1, EG 1V0, and EU 1V1 use Tape & Box (TB) packaging, while ES 1V uses Tape & Reel (TR) packaging. These are procurement and handling considerations; electrical and mechanical compatibility remains unchanged. All parts feature identical axial through-hole form factors.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts carry RoHS compliance certification. The original RL104-N-2-4-AP is ROHS3 compliant, while substitutes carry standard RoHS compliance. Both certifications meet current regulatory requirements for electronic component manufacturing and use.

Q: What is the reverse leakage current significance?

A: The RL104-N-2-4-AP exhibits 5 µA reverse leakage at 400 V, while substitutes range from 10 µA to 50 µA. Higher leakage increases standby power consumption and heat generation. For most general-purpose rectification applications, these differences are negligible. High-impedance circuits or precision analog applications may require evaluation of leakage impact on circuit performance.