RL206 Equivalent & Substitute Parts

Part Overview

The RL206 is a general-purpose rectifier diode rated for 800 V DC reverse voltage and 2 A average rectified current in a through-hole DO-15 package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The RL206 operates across a junction temperature range of -65°C to 125°C and features standard recovery characteristics with reverse leakage current of 5 µA at rated voltage.

Substiute Parts

RL206

SMC Diode SolutionsIn Stock: 1109RL206 Datasheet

Current PartRFQ

RL206G

SMC Diode SolutionsIn Stock: 743RL206G Datasheet

DirectRFQ

HER207G B0G

Taiwan Semiconductor CorporationIn Stock: 975HER207G B0G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RL206 are selected based on electrical and mechanical compatibility within the following criteria:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): 800 V minimum
• Current - Average Rectified (Io): 2 A minimum
• Mounting Type: Through Hole
• Package / Case: DO-15 or DO-204AC (DO-15) compatible

Acceptable Parameter Variations:

• Voltage - Forward (Vf) (Max) @ If: Up to 1.7 V @ 2 A
• Current - Reverse Leakage @ Vr: Up to 5 µA @ 800 V
• Speed: Standard or Fast Recovery acceptable
• Operating Temperature - Junction: Extended ranges acceptable
• Capacitance @ Vr, F: 20 pF @ 4V, 1MHz

Substitutes are classified as Direct Manufacturer (same manufacturer, active product status) or Similar Manufacturer (alternative manufacturer, equivalent electrical specifications).

Parameter Comparison

Engineering Selection Recommendations

RL206G (Direct Manufacturer Substitute)

The RL206G is the primary substitute for the RL206. Both components are manufactured by SMC Diode Solutions and share identical electrical ratings for voltage, current, and reverse leakage. The RL206G is currently in active production status, ensuring long-term availability. The forward voltage specification increases from 1 V to 1.1 V at 2 A, representing a 0.1 V differential within acceptable engineering tolerance for general-purpose rectification applications. The RL206G supports an extended operating temperature range of -65°C to 175°C, providing additional thermal margin. The component is ROHS3 compliant and carries REACH Affected status, meeting current regulatory requirements for new designs.

HER207G B0G (Similar Manufacturer Substitute)

The HER207G B0G, manufactured by Taiwan Semiconductor Corporation, provides an alternative substitute with identical voltage and current ratings. This component features fast recovery characteristics (≤500 ns) with a specified reverse recovery time of 75 ns, compared to the standard recovery profile of the RL206. The forward voltage specification is 1.7 V at 2 A, representing a 0.7 V increase relative to the RL206. The HER207G B0G operates across -55°C to 150°C, providing adequate thermal coverage for most applications. This component is ROHS3 compliant and REACH Unaffected. Selection of the HER207G B0G is appropriate for applications where fast recovery characteristics provide circuit performance benefits or where the higher forward voltage drop is acceptable within system design constraints.

Frequently Asked Questions (FAQ)

Q: Can the RL206G directly replace the RL206 in existing designs?

A: Yes. The RL206G maintains identical voltage and current ratings (800 V, 2 A) and reverse leakage specifications (5 µA @ 800 V). The forward voltage increase from 1 V to 1.1 V at 2 A is within standard engineering tolerance for rectifier diodes. Both components use the same DO-15 package and through-hole mounting configuration. The RL206G is the recommended substitute due to direct manufacturer continuity and active product status.

Q: What is the difference between standard and fast recovery diodes?

A: Recovery speed refers to the time required for a diode to transition from forward conduction to reverse blocking when the applied voltage reverses. The RL206 and RL206G feature standard recovery (>500 ns), while the HER207G B0G features fast recovery (≤500 ns, 75 ns specified). Fast recovery diodes reduce switching losses in high-frequency applications but are not required for low-frequency rectification circuits. Selection depends on circuit operating frequency and switching loss requirements.

Q: Is the forward voltage difference between RL206 and HER207G B0G significant?

A: The forward voltage increases from 1 V (RL206) to 1.7 V (HER207G B0G) at 2 A, representing a 0.7 V differential. This increase results in higher power dissipation in the diode. For applications with tight thermal budgets or high current duty cycles, this difference must be evaluated against system cooling capacity. For low-frequency, low-current applications, the difference is typically negligible.

Q: Are all substitute parts available in the same package?

A: Yes. The RL206, RL206G, and HER207G B0G all use DO-15 (DO-204AC) axial through-hole packages. Physical dimensions and lead spacing are compatible, allowing direct board-level substitution without layout modifications.

Q: What regulatory compliance should be considered when selecting a substitute?

A: The RL206G is ROHS3 compliant and REACH Affected, meeting current environmental regulations for new product designs. The HER207G B0G is ROHS3 compliant and REACH Unaffected. Both components carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling. Selection should align with end-product regulatory requirements and supply chain compliance policies.

Q: Why is the RL206 classified as obsolete?

A: Obsolete status indicates that the RL206 is no longer in active production. The RL206G provides direct manufacturer continuity with improved specifications and extended temperature range, making it the preferred long-term solution for new designs and ongoing production support.