RS3JB-HF Equivalent & Substitute Parts

Part Overview

The RS3JB-HF is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 600 V DC reverse voltage and 3 A average rectified current in a surface mount SMB/DO-214AA package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the critical parameters that define this diode's functional role in power conversion and rectification circuits. Alternative sources provide design flexibility, supply chain redundancy, and inventory optimization without compromising circuit performance.

Substiute Parts

RS3JB-HF

Comchip TechnologyIn Stock: 3300RS3JB-HF Datasheet

Current PartRFQ

ES3JB-13-F

Diodes IncorporatedIn Stock: 10425ES3JB-13-F Datasheet

Parametric EquivalentRFQ

RS3JB-T R5G

Taiwan Semiconductor CorporationIn Stock: 1930RS3JB-T R5G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RS3JB-HF are qualified based on strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 600 V
• Current - Average Rectified (Io): 3 A
• Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 3 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature - Junction: -55°C to 150°C

Mechanical Equivalence Criteria:

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount

Compliance Equivalence Criteria:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitute parts maintain these core parameters, ensuring direct functional and physical compatibility in circuit applications. Variations in secondary parameters such as reverse recovery time (trr) and capacitance (Cj) remain within acceptable ranges for general-purpose rectification applications.

Parameter Comparison

Engineering Selection Recommendations

RS3JB-HF (Comchip Technology)

Primary selection for applications requiring the specified electrical and thermal characteristics. Active product status with established supply chain. RoHS3 compliant and MSL 1 rated for standard handling and storage conditions.

ES3JB-13-F (Diodes Incorporated)

Parametric equivalent with improved reverse recovery time (35 ns versus 250 ns), resulting in reduced switching losses in high-frequency rectification circuits. Slightly elevated reverse leakage current (10 µA versus 5 µA) remains within acceptable limits for general-purpose applications. Higher inventory availability (10,400 pcs) supports extended production runs. REACH Unaffected status provides additional regulatory compliance documentation.

RS3JB-T R5G (Taiwan Semiconductor Corporation)

Parametric equivalent with reverse recovery time matching the primary part (250 ns). Reverse leakage current and capacitance characteristics align with standard performance expectations. REACH Unaffected status provides regulatory compliance. Suitable for applications where consistent trr performance is prioritized.

All three parts maintain Active product status, RoHS3 compliance, and MSL 1 rating. Selection among these options is determined by supply availability, inventory requirements, and application-specific performance priorities.

Frequently Asked Questions (FAQ)

Q: Can ES3JB-13-F be used as a direct replacement for RS3JB-HF?

A: Yes. Both parts meet the core electrical specifications (600 V, 3 A, 1.3 V forward voltage) and share identical package geometry (DO-214AA, SMB). The ES3JB-13-F exhibits faster reverse recovery time (35 ns), which reduces switching losses in rectification circuits without compromising compatibility.

Q: What is the significance of reverse recovery time (trr) differences?

A: Reverse recovery time affects switching speed and power dissipation. The ES3JB-13-F (35 ns) recovers faster than RS3JB-HF and RS3JB-T R5G (250 ns each). In high-frequency applications, faster recovery reduces energy loss during switching transitions. For low-frequency or DC rectification, this difference has minimal impact.

Q: Are all three parts suitable for the same PCB layout?

A: Yes. All three parts use the DO-214AA (SMB) surface mount package with identical pin configuration and footprint. No PCB redesign is required when substituting between these parts.

Q: What does RoHS3 compliance mean for component selection?

A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All three substitute parts carry this certification, ensuring regulatory compliance for end-use applications in restricted markets.

Q: Why is Moisture Sensitivity Level (MSL) important?

A: MSL 1 (Unlimited) indicates the component can be stored indefinitely without moisture absorption concerns. All three parts carry MSL 1 rating, eliminating the need for specialized dry-pack storage or baking procedures prior to assembly.

Q: Can reverse leakage current differences affect circuit performance?

A: Reverse leakage current (5 µA for RS3JB-HF and RS3JB-T R5G; 10 µA for ES3JB-13-F) represents minority carrier conduction in reverse bias. For general-purpose rectification, both values are negligible. In precision analog circuits or high-impedance applications, the lower leakage of the primary part may be preferred.

Q: What inventory considerations apply to these substitutes?

A: RS3JB-HF has 3,246 pcs available; ES3JB-13-F has 10,400 pcs; RS3JB-T R5G has 1,873 pcs. Higher inventory availability of ES3JB-13-F supports extended production schedules and reduces lead time risk.