SS36(SMA)
Niu Hang
Needs validationhigh risk
A functional alternative with better V/I ratings, but with much higher forward voltage requiring design review.
Best Alternatives to CDBA140SL-HF
CDBA140SL-HF is a 40V, 1A Super Low Forward Voltage Schottky rectifier in a DO-214AC (SMA) package, designed for high-efficiency applications. Finding a direct replacement requires careful matching of its ultra-low Vf characteristic.
AI replacement insight
Electrical riskmedium
Higher Vf increases power dissipation and may impact circuit voltage levels.
Package risklow
Candidates share the same DO-214AC (SMA) package.
Can it be replaced directly?
No direct drop-in replacement is identified; all candidates have a higher forward voltage than the target's 'Super Low VF' characteristic. Engineering review is required.
Best replacement path
Select a Schottky diode with sufficient V/I ratings (e.g., SS36(SMA)) and verify thermal performance can handle the higher power loss from increased Vf.
Main risk
Increased power loss and heat generation due to higher forward voltage (Vf) in all available alternatives.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | CDBA140SL-HF | SS36(SMA) | SS510 SMA | SS54-MS | Compatibility / risk |
|---|---|---|---|---|---|
| Package | DO-214AC (SMA) | DO-214AC(SMA) | DO-214AC (SMA) | DO-214AC (SMA) | DO-214AC(SMA) / DO-214AC (SMA) — Package is form-factor compatible.; SS510 SMA: Package is form-factor compatible.; SS54-MS: Package is form-factor compatible.; SX34_R1_00001: Package is form-factor compatible. |
| Diode Type | Schottky | Schottky | Schottky | Schottky | Schottky — Both are Schottky rectifiers.; SS510 SMA: Both are Schottky rectifiers.; SS54-MS: Both are Schottky rectifiers.; SX34_R1_00001: Both are Schottky rectifiers. |
| Voltage | 40V | 60V | 100V | 40V | 60V / 100V / 40V — Higher voltage rating provides safety margin.; SS510 SMA: Higher voltage rating provides safety margin.; SS54-MS: Voltage rating matches, no safety margin.; SX34_R1_00001: Voltage rating matches, no safety margin. |
| Current | 1A | 3A | 5A | 5A | 3A / 5A — Higher current rating provides more margin.; SS510 SMA: Higher current rating provides more margin.; SS54-MS: Higher current rating provides more margin.; SX34_R1_00001: Higher current rating provides more margin. |
| Forward Voltage | ~0.33V | ~0.70V | ~0.85V | ~0.55V | ~0.70V / ~0.85V / ~0.55V / ~0.5V — Significantly higher Vf than target's Super Low 0.33V.; SS510 SMA: Significantly higher Vf than target's Super Low 0.33V.; SS54-MS: Significantly higher Vf than target's Super Low 0.33V.; SX34_R1_00001: Significantly higher Vf than target's Super Low 0.33V. |
Application & sourcing insights
Questions & answers
Several Schottky diodes like Panjit's SX34 or MSKSEMI's SS54-MS offer similar voltage/current ratings in the same package, but have a higher forward voltage. The best choice depends on your circuit's tolerance for increased power loss.