
Lelon
Functionally similar with matching key specs, but requires board redesign as it is an SMD part and the target is through-hole.
KNH2100UF50V149EC0019 is a 100uF 50V through-hole aluminum capacitor. While functional alternatives exist, no direct drop-in replacements have been found, as all candidates have a different (SMD) package type requiring board redesign.
Target is Through-Hole, candidates are SMD. Requires board redesign.
Secondary parameters like ESR, ripple current, and lifetime must be verified.
Candidates are from a major manufacturer (Lelon) and appear to be active.
No direct, pin-compatible replacements have been identified. All current candidates are Surface Mount (SMD) devices and require a board redesign to replace the through-hole target.
Search for a 100uF, 50V (or higher) aluminum electrolytic capacitor in a through-hole radial package with dimensions near 8mm x 9mm and similar or better ESR and ripple current ratings.
Package risk is high. The target is a through-hole component, while all potential alternatives are surface-mount, making them physically incompatible without a new PCB layout.

Lelon
Functionally similar with matching key specs, but requires board redesign as it is an SMD part and the target is through-hole.
| Feature / factor | KNH2100UF50V149EC0019 | VZH101M1HTR-0810 | VZH101M2ATR-1313 | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Radial, 8mm x 9mm | SMD, 8mm x 10mm | SMD, 12.5mm x 13.5mm | SMD, 8mm x 10mm / SMD, 12.5mm x 13.5mm — Mounting type is different (SMD vs. Through-Hole), requires board redesign.; VZH101M2ATR-1313: Mounting type is different (SMD vs. Through-Hole), requires board redesign. | |
| Voltage | 50V | 50V | 100V | 50V / 100V — matched; VZH101M2ATR-1313: Candidate voltage is higher, which is a safe upgrade. | |
| Capacitance | 100uF | 100uF | 100uF | 100uF — matched; VZH101M2ATR-1313: matched | |
| Tolerance | ±20% | ±20% | ±20% | ±20% — matched; VZH101M2ATR-1313: matched |
Functionally, parts like Lelon's VZH101M1HTR-0810 offer the same capacitance and voltage, but it is an SMD part and requires a board redesign. Finding a through-hole radial capacitor with similar specs is recommended.