CDBQR54 Schottky Diode 30V 200mA 0402 Equivalent & Substitute Parts

Part Overview

The CDBQR54 is a Schottky rectifier diode manufactured by Comchip Technology, rated for 30V DC reverse voltage and 200mA average rectified current in a 0402 (1006 Metric) surface mount package. This component is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the primary part reaches end-of-life status, inventory constraints occur, or alternative packaging formats are required for manufacturing flexibility. The substitute parts listed maintain electrical equivalence within the specified parameter ranges while potentially offering different packaging options, manufacturers, or product lifecycle statuses.

Substiute Parts

CDBQR54

Comchip TechnologyIn Stock: 2125CDBQR54 Datasheet

Current PartRFQ

CDBQR42-HF

Comchip TechnologyIn Stock: 778CDBQR42-HF Datasheet

Parametric EquivalentRFQ

CDBQR54-HF

Comchip TechnologyIn Stock: 80485CDBQR54-HF Datasheet

Parametric EquivalentRFQ

BAT54LP-7

Diodes IncorporatedIn Stock: 605207BAT54LP-7 Datasheet

DirectRFQ

BAT54L,315

NXP SemiconductorsIn Stock: 3410BAT54L,315 Datasheet

UpgradeRFQ

PMEG3002AEL,315

Nexperia USA Inc.In Stock: 69415PMEG3002AEL,315 Datasheet

MFR RecommendedRFQ

SDM20U30LP-7

Diodes IncorporatedIn Stock: 164224SDM20U30LP-7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDBQR54 is determined by strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal 30V
• Current - Average Rectified (Io): Must equal 200mA
• Technology: Must be Schottky
• Mounting Type: Must be Surface Mount
• Package / Case: Must be 0402 (1006 Metric) or mechanically equivalent

Secondary Compatibility Parameters:

• Reverse Recovery Time (trr): 5 ns (maximum allowable)
• Reverse Leakage Current: Must not exceed specified values at rated voltage
• Forward Voltage (Vf): Variations acceptable within circuit design margins
• Capacitance: Variations acceptable within circuit design margins
• Operating Temperature Range: Must support minimum 125°C junction temperature

Grouping Classification:

Group 1 - Parametric Equivalents (Comchip Technology): CDBQR54-HF and CDBQR42-HF maintain identical electrical specifications with identical package format. These parts are direct functional replacements with variations in packaging type (Tape & Reel vs. Cut Tape) and product lifecycle status.

Group 2 - Direct Manufacturer Equivalent (Diodes Incorporated): BAT54LP-7 provides electrical equivalence with identical core parameters but uses alternative package designation (X1-DFN1006-2) while maintaining 0402 (1006 Metric) mechanical compatibility.

Group 3 - Upgrade Alternatives (NXP Semiconductors / Nexperia): BAT54L,315 and PMEG3002AEL,315 meet core electrical requirements with variations in forward voltage characteristics and reverse leakage specifications. These parts offer enhanced performance characteristics and automotive-grade qualification (PMEG3002AEL,315).

Group 4 - Alternative Manufacturer Option (Diodes Incorporated): SDM20U30LP-7 provides electrical equivalence with alternative forward voltage and leakage characteristics while maintaining package compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

CDBQR54-HF is the primary substitute when packaging format flexibility is acceptable. This part maintains identical electrical specifications and ROHS3 compliance while offering Cut Tape packaging. Product status is Last Time Buy, indicating limited future availability.

BAT54LP-7 (Diodes Incorporated) provides Active product status with identical electrical parameters and Tape & Reel packaging. This part ensures long-term supply continuity and is suitable for high-volume production requirements.

For Enhanced Performance Applications:

PMEG3002AEL,315 (Nexperia) offers superior forward voltage characteristics (480mV @ 200mA vs. 1V @ 100mA) and automotive-grade qualification (AEC-Q100). This part is recommended for applications requiring reduced power dissipation and automotive reliability standards. Operating temperature maximum of 150°C provides thermal margin advantage.

BAT54L,315 (NXP Semiconductors) provides improved forward voltage (800mV @ 100mA) with Active product status and 150°C maximum junction temperature rating.

For Cost-Optimized Selection:

SDM20U30LP-7 (Diodes Incorporated) offers Active product status with high inventory availability (164,200 pcs) and alternative forward voltage characteristics suitable for applications with relaxed power dissipation requirements.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. PMEG3002AEL,315 provides additional automotive qualification (AEC-Q100) for applications requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q1: Can CDBQR54-HF be used as a direct replacement for CDBQR54?

A: Yes. CDBQR54-HF maintains identical electrical specifications including 30V reverse voltage, 200mA current rating, 1V forward voltage @ 100mA, and 5ns reverse recovery time. The primary difference is packaging type (Cut Tape vs. Tape & Reel). Both parts use identical 0402C/SOD-923F supplier device package and are ROHS3 compliant. Product status for CDBQR54-HF is Last Time Buy, indicating limited future availability.

Q2: What is the difference between BAT54LP-7 and CDBQR54?

A: Electrical specifications are identical: 30V reverse voltage, 200mA current, 1V forward voltage @ 100mA, 5ns reverse recovery time, and 2µA reverse leakage @ 25V. BAT54LP-7 is manufactured by Diodes Incorporated (vs. Comchip Technology) and uses X1-DFN1006-2 supplier device package designation. BAT54LP-7 maintains Active product status with higher inventory availability (605,100 pcs), ensuring long-term supply continuity.

Q3: Why does PMEG3002AEL,315 have different forward voltage specifications?

A: PMEG3002AEL,315 is specified at 480mV @ 200mA, compared to CDBQR54 at 1V @ 100mA. These measurements occur at different current levels. The lower forward voltage at higher current indicates superior efficiency characteristics. This part is automotive-grade (AEC-Q100 qualified) and offers 150°C maximum junction temperature vs. 125°C for CDBQR54. Selection depends on application power dissipation requirements and thermal constraints.

Q4: Are package differences between 0402C/SOD-923F and X1-DFN1006-2 significant?

A: Both designations refer to mechanically equivalent 0402 (1006 Metric) surface mount packages. The different supplier device package names reflect manufacturer nomenclature variations. Physical dimensions, land patterns, and PCB footprints are compatible. No design changes are required when substituting between these package designations.

Q5: What is the significance of "Last Time Buy" product status?

A: Last Time Buy status indicates the manufacturer has announced end-of-life for that part number. CDBQR54-HF and CDBQR42-HF carry this status. Inventory is available but will not be replenished after current stock depletes. For new designs or long-term production, select parts with Active status: BAT54LP-7, BAT54L,315, PMEG3002AEL,315, or SDM20U30LP-7.

Q6: Which substitute part offers the best thermal performance?

A: PMEG3002AEL,315 and BAT54L,315 both support 150°C maximum junction temperature (vs. 125°C for CDBQR54). PMEG3002AEL,315 additionally provides the lowest forward voltage (480mV @ 200mA), resulting in minimal power dissipation. This combination makes PMEG3002AEL,315 optimal for thermally constrained applications.

Q7: Are all substitute parts ROHS3 compliant?

A: CDBQR54, CDBQR54-HF, CDBQR42-HF, BAT54LP-7, PMEG3002AEL,315, and SDM20U30LP-7 are confirmed ROHS3 compliant. BAT54L,315 RoHS status is not specified in available documentation. For applications requiring verified ROHS3 compliance, confirm with supplier documentation before selection.

Q8: What reverse leakage current differences exist between substitutes?

A: CDBQR54, CDBQR54-HF, and BAT54LP-7 specify 2µA @ 25V. CDBQR42-HF specifies 500nA @ 25V (superior). PMEG3002AEL,315 specifies 50µA @ 30V, and SDM20U30LP-7 specifies 150µA @ 30V. Higher leakage at elevated voltages may impact applications with strict leakage current requirements. For low-leakage applications, CDBQR42-HF is optimal.

Q9: Which substitute offers highest inventory availability?

A: CDBQR54-HF provides 80,400 pcs inventory. BAT54LP-7 provides 605,100 pcs (highest). SDM20U30LP-7 provides 164,200 pcs. CDBQR54 provides 2,111 pcs. For high-volume production with extended lead times, BAT54LP-7 ensures supply security.

Q10: Can PMEG3002AEL,315 be used in non-automotive applications?

A: Yes. PMEG3002AEL,315 meets all electrical requirements for CDBQR54 substitution. Automotive qualification (AEC-Q100) indicates enhanced reliability and quality standards but does not restrict use in non-automotive applications. The superior forward voltage characteristics and 150°C thermal rating provide performance benefits for any application.