CDBA5819-HF Schottky Diode 40V 1A Equivalent & Substitute Parts

Part Overview

The CDBA5819-HF is a Schottky rectifier diode manufactured by Comchip Technology, rated for 40V DC reverse voltage and 1A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active product status and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical ratings and mechanical compatibility within the Schottky diode rectifier category. Substitutes enable design flexibility, supply chain continuity, and alternative sourcing options when the primary part becomes unavailable or when design requirements permit component interchange.

Substiute Parts

CDBA5819-HF

Comchip TechnologyIn Stock: 4616CDBA5819-HF Datasheet

Current PartRFQ

RB160L-40TE25

Rohm SemiconductorIn Stock: 240686RB160L-40TE25 Datasheet

MFR RecommendedRFQ

RB162L-40TE25

Rohm SemiconductorIn Stock: 13865RB162L-40TE25 Datasheet

MFR RecommendedRFQ

SS14-E3/61T

Vishay General Semiconductor - Diodes DivisionIn Stock: 204637SS14-E3/61T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CDBA5819-HF is determined by strict equivalence of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 40 V
• Current - Average Rectified (Io): 1 A
• Technology: Schottky
• Mounting Type: Surface Mount
• Package / Case: DO-214AC, SMA
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Allowable Variations:

• Voltage - Forward (Vf) (Max) @ If: Substitute values must not exceed the application's forward voltage tolerance
• Current - Reverse Leakage @ Vr: Lower leakage values are acceptable; higher values require application verification
• Operating Temperature - Junction (Max): Higher maximum junction temperatures provide additional thermal margin
• Supplier Device Package designation: May differ while maintaining DO-214AC, SMA physical compatibility

All identified substitutes meet or exceed the electrical specifications of the CDBA5819-HF within the constraints of the Schottky diode rectifier category.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (Active Product Status): The CDBA5819-HF (Comchip Technology) and SS14-E3/61T (Vishay General Semiconductor) both carry Active product status and are suitable for new designs. Both components are ROHS3 compliant and REACH unaffected. The SS14-E3/61T offers superior forward voltage performance (500 mV vs. 600 mV @ 1 A) and lower reverse leakage current (200 µA vs. 500 µA @ 40 V), providing improved efficiency in rectification applications.

Secondary Selection (Not For New Designs): RB160L-40TE25 and RB162L-40TE25 (Rohm Semiconductor) are classified as Not For New Designs. These parts are suitable for replacement, repair, and legacy system applications only. Both Rohm devices provide higher maximum junction temperature ratings (150°C vs. 125°C), offering enhanced thermal performance. RB160L-40TE25 exhibits the lowest reverse leakage current (100 µA @ 40 V) among all substitutes.

Compliance Verification: All substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and REACH unaffected status, ensuring regulatory compatibility with the original CDBA5819-HF specification.

Frequently Asked Questions (FAQ)

Q1: Can I substitute the CDBA5819-HF with RB160L-40TE25 or RB162L-40TE25 in new product designs?

A: No. RB160L-40TE25 and RB162L-40TE25 are designated Not For New Designs. These parts are restricted to replacement and repair applications. For new designs, use CDBA5819-HF or SS14-E3/61T, both carrying Active product status.

Q2: What is the difference between RB160L-40TE25 and RB162L-40TE25?

A: Both parts are manufactured by Rohm Semiconductor with identical electrical ratings (40V, 1A, 550 mV forward voltage). The primary difference is reverse leakage current: RB160L-40TE25 exhibits 100 µA @ 40 V, while RB162L-40TE25 exhibits 500 µA @ 40 V. Selection depends on application leakage requirements.

Q3: Is the SS14-E3/61T a direct replacement for CDBA5819-HF?

A: Yes. SS14-E3/61T meets all critical electrical parameters: 40V reverse voltage, 1A average rectified current, fast recovery speed, and DO-214AC (SMA) package. SS14-E3/61T offers improved forward voltage (500 mV vs. 600 mV) and lower reverse leakage (200 µA vs. 500 µA). Both parts are Active status and ROHS3 compliant.

Q4: Why do the substitute parts have different forward voltage ratings?

A: Forward voltage variation is inherent to Schottky diode manufacturing and material composition. SS14-E3/61T (500 mV) and RB160L-40TE25/RB162L-40TE25 (550 mV) represent different manufacturing processes. Lower forward voltage reduces power dissipation and improves efficiency. Verify application tolerance before selection.

Q5: Can I use a substitute with higher maximum junction temperature in a thermally constrained application?

A: Higher maximum junction temperature (150°C for Rohm parts vs. 125°C for CDBA5819-HF and SS14-E3/61T) provides additional thermal margin but does not change the diode's thermal resistance or heat dissipation characteristics. Thermal performance depends on PCB design, thermal management, and operating conditions, not maximum rated temperature alone.

Q6: Are all substitute parts available in the same packaging format?

A: All parts use DO-214AC (SMA) package for mechanical compatibility. However, supplier device packages differ: CDBA5819-HF and SS14-E3/61T use DO-214AC (SMA) designation, while Rohm parts use PMDS designation. Physical dimensions and PCB footprints remain identical for surface mount assembly.

Q7: What compliance certifications apply to all parts in this substitution list?

A: All parts are ROHS3 compliant, REACH unaffected, MSL Level 1 (Unlimited moisture sensitivity), and carry EAR99 ECCN classification with HTSUS code 8541.10.0080. Regulatory compliance is maintained across all substitutes.