CUD10-04 TR13 Equivalent & Substitute Parts

Part Overview

The CUD10-04 TR13 is a general-purpose rectifier diode manufactured by Central Semiconductor Corp, rated for 400 V DC reverse voltage and 10 A average rectified current in a surface mount DPAK package. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, maintenance, and production continuity. Substitute parts must maintain functional compatibility within the specified electrical and mechanical parameters while accommodating the obsolete status of the original component.

Substiute Parts

CUD10-04 TR13

Central Semiconductor CorpIn Stock: 798CUD10-04 TR13 Datasheet

Current PartRFQ

SDURD1060

SMC Diode SolutionsIn Stock: 2498SDURD1060 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CUD10-04 TR13 is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) rating must equal or exceed 400 V
• Current - Average Rectified (Io) must equal or exceed 10 A
• Speed classification must be Fast Recovery (≤ 500ns, > 200mA)
• Reverse Recovery Time (trr) must be 35 ns or less
• Forward voltage drop (Vf) at 10 A must be compatible with circuit design margins

Mechanical Compatibility Criteria:

• Package / Case must be TO-252-3, DPAK (2 Leads + Tab), SC-63
• Mounting Type must be Surface Mount
• Operating Temperature range must support -65°C to 150°C junction temperature

Compliance Criteria:

• RoHS3 Compliant status required
• Moisture Sensitivity Level (MSL) of 1 (Unlimited) required

The SDURD1060 from SMC Diode Solutions meets all substitution criteria with the following characteristics: 600 V reverse voltage rating (exceeds 400 V requirement), 10 A average rectified current (meets requirement), Fast Recovery speed classification, 35 ns reverse recovery time, DPAK surface mount package, and ROHS3 compliance. The higher voltage rating provides additional design margin while maintaining all other electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

SDURD1060 Substitution Basis:

The SDURD1060 is a direct functional substitute for the CUD10-04 TR13 based on the following engineering factors:

1. Product Status Alignment: The CUD10-04 TR13 is obsolete, while the SDURD1060 is active. Active product status ensures continued availability, manufacturing support, and compliance with current regulatory standards.

2. Electrical Parameter Compliance: The SDURD1060 meets or exceeds all critical electrical specifications. The 600 V reverse voltage rating exceeds the 400 V requirement, providing additional design margin. Current rating, speed classification, and reverse recovery time are identical. Forward voltage increase (1.66 V vs. 1.3 V) must be evaluated within circuit design parameters.

3. Mechanical Compatibility: Both parts use identical DPAK surface mount packaging (TO-252-3, SC-63), ensuring direct PCB footprint compatibility without layout modifications.

4. Compliance Certification: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) rating, satisfying environmental and handling requirements.

5. Temperature Operating Range: The SDURD1060 supports -55°C to 150°C junction temperature, which covers the upper portion of the CUD10-04 TR13 range (-65°C to 150°C). Applications requiring operation below -55°C require additional evaluation.

6. Supply Continuity: The SDURD1060 has significantly higher inventory availability (2405 Pcs vs. 734 Pcs), supporting production continuity and reducing supply chain risk.

Frequently Asked Questions (FAQ)

Q: Can the SDURD1060 be used as a direct replacement for the CUD10-04 TR13 without PCB modifications?

A: Yes. Both parts use the TO-252-3 DPAK surface mount package with identical pinout and footprint. No PCB layout changes are required for mechanical compatibility.

Q: What is the impact of the higher forward voltage (1.66 V vs. 1.3 V) on circuit performance?

A: The forward voltage difference of 0.36 V must be evaluated within the specific circuit application. This affects power dissipation and voltage drop across the diode. Circuit designers must confirm that the higher forward voltage does not exceed design margins for voltage regulation, thermal management, or signal integrity.

Q: Why does the SDURD1060 have a higher reverse voltage rating (600 V vs. 400 V)?

A: The higher voltage rating provides additional design margin and protection against voltage transients. In applications designed for 400 V operation, the 600 V rated diode operates within safe limits with reduced stress on the semiconductor junction.

Q: Is the SDURD1060 suitable for applications requiring operation below -55°C?

A: The SDURD1060 operating temperature range is -55°C to 150°C, which does not extend to the -65°C minimum of the CUD10-04 TR13. Applications requiring -65°C operation must evaluate alternative substitutes or confirm that the -55°C minimum is acceptable for the intended use.

Q: Are there any compliance or certification differences between the two parts?

A: Both parts are ROHS3 compliant with MSL 1 (Unlimited) rating. The SDURD1060 carries REACH Affected status, which must be confirmed as acceptable within the supply chain and end-use requirements.

Q: What is the significance of the identical 35 ns reverse recovery time?

A: Reverse recovery time determines switching speed and is critical for high-frequency applications. The identical 35 ns specification ensures equivalent performance in fast-switching circuits and power conversion applications.

Q: Can the SDURD1060 be used in existing designs without circuit re-qualification?

A: Mechanical and package compatibility are confirmed. However, the forward voltage difference requires circuit analysis to confirm acceptable performance margins. Thermal analysis may also be necessary due to increased power dissipation at higher forward voltage.