DB107ST-HF Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DB107ST-HF is a single-phase bridge rectifier manufactured by Comchip Technology, rated for 1 kV peak reverse voltage and 1 A average rectified current. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design support and procurement continuity. The DB107ST-HF features a 4-SMD, Gull Wing surface mount package and operates across a temperature range of -55°C to 150°C.

Substiute Parts

DB107ST-HF

Comchip TechnologyIn Stock: 1047DB107ST-HF Datasheet

Current PartRFQ

DB107S-HF

Comchip TechnologyIn Stock: 997DB107S-HF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DB107ST-HF is determined by electrical and mechanical parameter equivalence. The critical parameters that define substitutability are:

• Voltage Rating: Peak reverse voltage of 1 kV
• Current Rating: Average rectified current of 1 A
• Forward Voltage Characteristics: Maximum forward voltage of 1.1 V @ 1 A
• Reverse Leakage: Maximum 10 µA @ 1000 V
• Temperature Range: Operating range of -55°C to 150°C
• Package Configuration: 4-SMD, Gull Wing surface mount format (DBS package)
• Diode Type and Technology: Single phase, standard technology bridge rectifier

The primary substitute identified is the DB107S-HF, which maintains identical electrical specifications and package configuration while offering active product status and improved availability. Additional cross-reference parts listed (DI1010_T0_00001, DF10S-E3/45, DB107S, DF10SA-E3/45, DB107S-G) represent the extended substitution network for the DB107S-HF base part.

Parameter Comparison

Engineering Selection Recommendations

The DB107S-HF is the direct substitute for the obsolete DB107ST-HF. Both parts share identical electrical specifications and mechanical packaging, ensuring functional equivalence in circuit applications. The DB107S-HF offers the following advantages:

• Active Product Status: The DB107S-HF maintains active manufacturing status, ensuring long-term availability and supply chain continuity.
• Regulatory Compliance: The DB107S-HF is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.
• Moisture Sensitivity: MSL rating of 1 (Unlimited) indicates no moisture sensitivity constraints during storage and handling.
• Inventory Availability: 982 pieces of DB107S-HF are in stock, providing immediate procurement capability.

For applications requiring the DB107ST-HF, direct substitution with DB107S-HF is electrically and mechanically valid. The difference in packaging designation (tube for DB107S-HF versus unspecified for DB107ST-HF) does not affect functional performance or circuit compatibility.

Frequently Asked Questions (FAQ)

Q: Can the DB107S-HF directly replace the DB107ST-HF in existing designs?

A: Yes. The DB107S-HF provides identical electrical performance and mechanical compatibility. Both parts are single-phase bridge rectifiers with 1 kV peak reverse voltage, 1 A average rectified current, and 4-SMD Gull Wing surface mount packaging. No circuit modifications are required.

Q: What is the significance of the product status change from Obsolete to Active?

A: The DB107S-HF is actively manufactured and supported, ensuring continued availability for procurement and technical support. The DB107ST-HF, being obsolete, has limited or no manufacturing support and may face supply constraints.

Q: Are there differences in thermal performance between the DB107ST-HF and DB107S-HF?

A: Both parts operate across the same temperature range of -55°C to 150°C. The DB107S-HF specifies this as junction temperature (TJ), which is the standard thermal specification for semiconductor devices.

Q: What does the DBS package designation indicate?

A: DBS is the supplier device package designation for the 4-SMD, Gull Wing surface mount configuration. This package format is consistent across both the main part and substitute, ensuring PCB layout and assembly compatibility.

Q: Are there compliance differences between the two parts?

A: The DB107S-HF includes explicit ROHS3 compliance and REACH unaffected status certifications. Both parts carry the same ECCN (EAR99) and HTSUS (8541.10.0080) classifications. If regulatory compliance documentation is required, the DB107S-HF provides complete certification records.

Q: What is the MSL rating and why does it matter?

A: The DB107S-HF has an MSL rating of 1 (Unlimited), indicating no moisture sensitivity. This simplifies storage, handling, and assembly processes without requiring specialized moisture control measures.