CDBA140LR-HF Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBA140LR-HF is a surface mount Schottky rectifier diode manufactured by Comchip Technology, rated for 40V DC reverse voltage and 1A average rectified current in a 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 specifications and mechanical compatibility within the Schottky diode rectifier category. Substitution becomes necessary due to inventory availability, supply chain considerations, or design optimization requirements while maintaining functional equivalence.

Substiute Parts

CDBA140LR-HF

Comchip TechnologyIn Stock: 1158CDBA140LR-HF Datasheet

Current PartRFQ

RB160L-40TE25

Rohm SemiconductorIn Stock: 240686RB160L-40TE25 Datasheet

MFR RecommendedRFQ

RB162L-40TE25

Rohm SemiconductorIn Stock: 13865RB162L-40TE25 Datasheet

MFR RecommendedRFQ

SSA24-E3/61T

Vishay General Semiconductor - Diodes DivisionIn Stock: 1920SSA24-E3/61T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the CDBA140LR-HF is based on the following critical parameters that must match or exceed the main part specifications:

Primary Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 40V minimum
• Current - Average Rectified (Io): 1A minimum
• Package / Case: DO-214AC, SMA (mechanical compatibility)
• Mounting Type: Surface Mount
• Technology: Schottky

Secondary Compatibility Factors:

• Voltage - Forward (Vf) (Max) @ If: Must not exceed application requirements
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• Current - Reverse Leakage @ Vr: Lower values preferred for reduced standby current
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The identified substitute parts meet these criteria within the allowed electrical and mechanical parameters for this product category.

Parameter Comparison

Engineering Selection Recommendations

CDBA140LR-HF (Primary Selection) The CDBA140LR-HF maintains Active product status and is the recommended primary selection for new designs. It provides the lowest forward voltage drop (450 mV @ 1 A) among equivalent parts and operates within the specified temperature range of -50°C to 100°C. RoHS3 compliance and MSL 1 rating ensure environmental and moisture handling compatibility.

RB160L-40TE25 (Equivalent Substitute) The RB160L-40TE25 from Rohm Semiconductor matches all critical electrical parameters (40V, 1A) and mechanical specifications (DO-214AC, SMA). However, this part carries "Not For New Designs" product status. Forward voltage is higher at 550 mV @ 1 A, but reverse leakage current is lower at 100 µA @ 40 V. Maximum junction temperature rating is 150°C. RoHS3 compliance and MSL 1 rating are maintained. This part is suitable for legacy design updates or replacement applications only.

RB162L-40TE25 (Equivalent Substitute) The RB162L-40TE25 from Rohm Semiconductor matches all critical electrical parameters (40V, 1A) and mechanical specifications (DO-214AC, SMA). This part also carries "Not For New Designs" product status. Forward voltage is 550 mV @ 1 A with reverse leakage current at 500 µA @ 40 V, matching the main part's leakage specification. Maximum junction temperature rating is 150°C. RoHS3 compliance and MSL 1 rating are maintained. This part is suitable for legacy design updates or replacement applications only.

SSA24-E3/61T (Higher Current Capability Substitute) The SSA24-E3/61T from Vishay General Semiconductor exceeds the main part specifications with 2A average rectified current while maintaining 40V reverse voltage rating and DO-214AC (SMA) package compatibility. This part maintains Active product status and provides an extended operating temperature range of -65°C to 150°C. Forward voltage is 490 mV @ 2 A. Reverse leakage current is 200 µA @ 40 V. RoHS3 compliance and MSL 1 rating are maintained. This part is suitable for applications requiring higher current capacity or extended temperature operation.

Frequently Asked Questions (FAQ)

Q: Can RB160L-40TE25 or RB162L-40TE25 be used as direct replacements for CDBA140LR-HF in new designs?

A: No. Both Rohm parts carry "Not For New Designs" product status. They are electrically and mechanically compatible but should be used only for legacy design updates, field replacements, or maintenance of existing products. For new designs, use CDBA140LR-HF or SSA24-E3/61T.

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

A: Both parts are rated for 40V, 1A with identical forward voltage (550 mV @ 1 A) and package specifications. The primary difference is reverse leakage current: RB160L-40TE25 has 100 µA @ 40 V, while RB162L-40TE25 has 500 µA @ 40 V. Selection depends on application requirements for standby current consumption.

Q: Why does SSA24-E3/61T have a higher current rating (2A) than the main part (1A)?

A: SSA24-E3/61T is a higher-capacity variant within the same voltage class and package family. The 2A rating provides design margin and allows use in applications requiring higher forward current. It remains backward compatible with 1A applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. CDBA140LR-HF, RB160L-40TE25, RB162L-40TE25, and SSA24-E3/61T are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the impact of forward voltage differences between parts?

A: Forward voltage differences (450 mV for CDBA140LR-HF vs. 550 mV for Rohm parts vs. 490 mV for SSA24-E3/61T) affect power dissipation and heat generation. Lower forward voltage reduces power loss. Selection should consider thermal design and efficiency requirements of the application.

Q: Can these parts be used interchangeably in the same PCB layout?

A: Yes. All parts use identical DO-214AC (SMA) package and surface mount configuration, allowing direct PCB footprint compatibility without layout modifications.

Q: What is the significance of the operating temperature range difference?

A: CDBA140LR-HF operates from -50°C to 100°C, while SSA24-E3/61T operates from -65°C to 150°C. Selection depends on application environment. Extended temperature range parts provide design margin for extreme operating conditions or thermal stress scenarios.