RL104 Equivalent & Substitute Parts

Part Overview

The RL104 is a general-purpose rectifier diode 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 parts for ongoing design and procurement requirements. The RL104 operates across a junction temperature range of -65°C to 175°C and exhibits standard recovery characteristics suitable for general rectification applications.

Substiute Parts

RL104

SMC Diode SolutionsIn Stock: 964RL104 Datasheet

Current PartRFQ

RL104G

SMC Diode SolutionsIn Stock: 905RL104G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RL104 is determined by electrical and mechanical parameter equivalence. The critical parameters that define substitutability are:

• Voltage - DC Reverse (Vr) (Max): 400 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
• Current - Reverse Leakage @ Vr: 5 µA @ 400 V
• Speed: Standard Recovery >500ns, > 200mA (Io)
• Capacitance @ Vr, F: 15 pF @ 4V, 1MHz
• Mounting Type: Through Hole
• Package / Case: Axial
• Operating Temperature - Junction: -65°C to 175°C
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The RL104G meets all specified electrical and mechanical parameters and is manufactured by SMC Diode Solutions under the same technology classification (Standard). The RL104G is classified as active product status, making it suitable for direct substitution in applications currently using the obsolete RL104.

Parameter Comparison

Engineering Selection Recommendations

The RL104G is the direct active equivalent for the obsolete RL104. All electrical parameters, mechanical specifications, and thermal characteristics are identical. The RL104G carries RoHS3 compliance certification, whereas the RL104 status is not specified. The RL104G is classified as REACH Affected, compared to the RL104 which is REACH Unaffected; however, both components share identical ECCN and HTSUS classifications.

For applications currently utilizing the RL104, the RL104G provides functional continuity with the advantage of active product status and current manufacturing support. The identical electrical and mechanical parameters ensure direct pin-for-pin and functional compatibility without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the RL104G be used as a direct replacement for the RL104?

A: Yes. The RL104G meets all electrical and mechanical specifications of the RL104, including voltage rating, current capacity, forward voltage drop, reverse leakage current, recovery speed, capacitance, and thermal operating range. Both components use identical A-405 axial through-hole packaging.

Q: What is the primary reason to transition from RL104 to RL104G?

A: The RL104 is classified as obsolete product status. The RL104G is the active equivalent manufactured by SMC Diode Solutions and is available for ongoing procurement and design implementation.

Q: Are there any compliance differences between RL104 and RL104G?

A: The RL104G carries RoHS3 compliance certification. Both components share identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications. The RL104G is classified as REACH Affected, while the RL104 is REACH Unaffected; however, this does not affect electrical or mechanical substitutability.

Q: Is the axial through-hole package identical between both parts?

A: Yes. Both the RL104 and RL104G use the A-405 axial through-hole package configuration. No PCB layout or mechanical mounting modifications are required.

Q: What are the key electrical parameters that define substitutability?

A: The critical parameters are 400 V DC reverse voltage rating, 1 A average rectified current, 1.1 V maximum forward voltage at 1 A, 5 µA reverse leakage current at 400 V, standard recovery speed characteristics, and 15 pF capacitance at 4 V and 1 MHz. All parameters are identical between RL104 and RL104G.

Q: What is the operating temperature range for both components?

A: Both the RL104 and RL104G operate across a junction temperature range of -65°C to 175°C, providing identical thermal performance specifications.