CDBQR70-HF Equivalent & Substitute Parts

Part Overview

The CDBQR70-HF is a Schottky rectifier diode manufactured by Comchip Technology, designed for surface mount applications in the 0402 package format. This component operates at 70V reverse voltage with 70mA average rectified current, suitable for small signal rectification circuits requiring fast switching characteristics. The main part is currently in Last Time Buy status, indicating production discontinuation. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for ongoing production requirements.

Substiute Parts

CDBQR70-HF

Comchip TechnologyIn Stock: 251622CDBQR70-HF Datasheet

Current PartRFQ

CDBQC70-HF

Comchip TechnologyIn Stock: 1165CDBQC70-HF Datasheet

MFR RecommendedRFQ

CDBQR70

Comchip TechnologyIn Stock: 5314CDBQR70 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDBQR70-HF is determined by strict electrical and mechanical parameter matching within the Schottky rectifier diode category. The following criteria establish valid substitutes:

Electrical Parameters (Must Match):

• Voltage - DC Reverse (Vr) (Max): 70 V
• Current - Average Rectified (Io): 70 mA
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 15 mA
• Reverse Recovery Time (trr): 5 ns
• Current - Reverse Leakage @ Vr: 100 nA @ 50 V
• Capacitance @ Vr, F: 2 pF @ 0V, 1MHz

Mechanical Parameters (Must Match):

• Package / Case: 0402 (1006 Metric)
• Mounting Type: Surface Mount
• Supplier Device Package: 0402C/SOD-923F

Compliance Parameters (Must Match):

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

Substitutes are classified into two categories: MFR Recommended (manufacturer-endorsed alternatives) and Parametric Equivalents (parts meeting all electrical and mechanical specifications).

Parameter Comparison

Engineering Selection Recommendations

CDBQC70-HF (MFR Recommended Substitute): This part is the manufacturer-recommended alternative to CDBQR70-HF. It maintains identical electrical specifications and package format while offering Active product status, ensuring long-term availability. The primary distinction is packaging format: CDBQC70-HF is supplied in Tape & Reel (TR) configuration versus the main part's Cut Tape (CT) format. Both parts carry ROHS3 compliance and MSL Level 1 rating. Selection of CDBQC70-HF is appropriate for designs requiring sustained production support and standard reel packaging for automated assembly processes.

CDBQR70 (Parametric Equivalent): This part provides complete electrical and mechanical equivalence to CDBQR70-HF, with all critical parameters matching exactly. Like CDBQC70-HF, it features Active product status and Tape & Reel packaging. CDBQR70 offers the highest inventory availability (5,300 pcs) among substitute options. This part is suitable for applications where packaging format flexibility exists and maximum supply availability is prioritized.

Product Status Consideration: The main part CDBQR70-HF is designated Last Time Buy, indicating imminent production discontinuation. Both substitute parts maintain Active status, providing design continuity for new production runs and ongoing supply chain requirements. Transition to either substitute part is recommended for long-term program sustainability.

Frequently Asked Questions (FAQ)

Q: Can CDBQC70-HF directly replace CDBQR70-HF in existing designs? A: Yes. CDBQC70-HF is electrically and mechanically identical to CDBQR70-HF. Both operate at 70V reverse voltage, 70mA average rectified current, and use the 0402 surface mount package. The primary difference is packaging format: CDBQC70-HF uses Tape & Reel (TR) while CDBQR70-HF uses Cut Tape (CT). This distinction affects procurement and assembly processes but not circuit performance.

Q: What is the difference between CDBQC70-HF and CDBQR70? A: Both parts are parametric equivalents with identical electrical specifications and package format. The distinction lies in product designation and inventory levels. CDBQR70 offers higher current inventory availability (5,300 pcs versus 1,114 pcs for CDBQC70-HF). Both are Active status products suitable for long-term production use.

Q: Why is CDBQR70-HF marked as Last Time Buy? A: Last Time Buy status indicates the manufacturer is discontinuing this specific part number variant. Customers requiring this component should transition to active alternatives (CDBQC70-HF or CDBQR70) to ensure continued supply availability for future production requirements.

Q: Are all three parts RoHS3 compliant? A: Yes. CDBQR70-HF, CDBQC70-HF, and CDBQR70 all carry ROHS3 Compliant certification and MSL Level 1 (Unlimited) moisture sensitivity rating, meeting environmental and reliability standards for industrial and commercial applications.

Q: What packaging considerations apply when selecting a substitute? A: CDBQR70-HF is supplied in Cut Tape (CT) format, while both CDBQC70-HF and CDBQR70 use Tape & Reel (TR) packaging. Cut Tape is suitable for manual assembly and small-volume applications, while Tape & Reel is optimized for automated pick-and-place assembly. Verify your assembly process requirements before selecting a substitute.

Q: Can these parts be used interchangeably in PCB designs? A: Yes. All three parts use identical 0402 (1006 Metric) surface mount packages with SOD-923F footprints. PCB layout and footprint designs require no modification when substituting between these parts.