S2DB-HF Equivalent & Substitute Parts

Part Overview

The S2DB-HF is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 200 V DC reverse voltage and 2 A average rectified current in a surface mount SMB/DO-214AA package. The device is classified as Active product status with standard recovery characteristics and operates across a junction temperature range of -55°C to 150°C.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across critical parameters including reverse voltage rating, forward current capacity, package form factor, and thermal operating range. Identification of alternative sources ensures supply chain flexibility and design continuity.

Substiute Parts

S2DB-HF

Comchip TechnologyIn Stock: 810S2DB-HF Datasheet

Current PartRFQ

S2D_R1_00001

Panjit International Inc.In Stock: 1866S2D_R1_00001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the S2DB-HF is determined by strict equivalence across the following parameters:

Mandatory Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 2 A
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 2 A
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Operating Temperature - Junction: -55°C ~ 150°C
• Speed: Standard Recovery >500ns, > 200mA (Io)
• Technology: Standard

The S2D_R1_00001 manufactured by Panjit International Inc. meets all mandatory equivalence criteria and qualifies as a parametric equivalent substitute. Both devices share identical electrical ratings, package specifications, and thermal operating characteristics, enabling direct functional replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the S2DB-HF and S2D_R1_00001 are classified as Active product status devices, indicating current manufacturing availability and ongoing support. Both devices maintain ROHS3 compliance and MSL Level 1 rating, satisfying environmental and handling requirements for industrial and commercial applications.

The S2D_R1_00001 exhibits lower reverse leakage current (1 µA versus 5 µA at 200 V), representing improved leakage performance. Capacitance values differ marginally (30 pF versus 25 pF at 4V, 1MHz), remaining within acceptable tolerance for standard rectification applications.

Selection between these devices is determined by supply availability, inventory status, and procurement lead time requirements. Both devices deliver equivalent functional performance in 200 V, 2 A rectification circuits with standard recovery characteristics and identical thermal operating ranges.

Frequently Asked Questions (FAQ)

Q: Can the S2D_R1_00001 be used as a direct replacement for the S2DB-HF in existing designs?

A: Yes. The S2D_R1_00001 meets all mandatory electrical and mechanical equivalence criteria, including reverse voltage rating (200 V), forward current capacity (2 A), forward voltage drop (1.1 V @ 2 A), package form factor (DO-214AA, SMB), and operating temperature range (-55°C to 150°C). Direct PCB substitution is supported without circuit modification.

Q: What are the differences in reverse leakage current between these devices?

A: The S2DB-HF specifies 5 µA reverse leakage at 200 V, while the S2D_R1_00001 specifies 1 µA at the same conditions. The S2D_R1_00001 exhibits superior leakage performance. Both values remain acceptable for standard rectification applications.

Q: Are there package compatibility concerns when substituting between these parts?

A: No. Both devices utilize the DO-214AA SMB surface mount package with identical pin configuration and footprint. PCB assembly equipment and reflow profiles require no modification.

Q: Do both devices meet the same compliance standards?

A: Yes. Both the S2DB-HF and S2D_R1_00001 are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating. Both are classified as EAR99 export control items with identical HTSUS tariff codes (8541.10.0080).

Q: What is the significance of the capacitance difference between these devices?

A: The S2DB-HF specifies 25 pF at 4V, 1MHz, while the S2D_R1_00001 specifies 30 pF under identical conditions. This 5 pF difference is negligible for standard rectification circuits and does not affect functional equivalence in typical applications.

Q: Are both devices suitable for high-frequency switching applications?

A: Both devices are classified as Standard Recovery type with recovery time >500ns at >200mA forward current. This classification indicates suitability for standard rectification rather than high-frequency switching applications.