FR207
MDD(Microdiode Semiconductor)
Needs validationmedium risk
Matches key ratings and package, but has a much slower reverse recovery time (trr).
Best Alternatives to HER208
HER208 is a 1000V, 2A high-efficiency rectifier in a DO-15 package, valued for its fast 70ns recovery time. Finding a replacement requires matching voltage, current, package, and especially the reverse recovery time (trr) for high-speed applications.
AI replacement insight
Electrical riskhigh
Using a diode with a slower trr can lead to increased switching losses and potential circuit failure.
Package risklow
The DO-15 package is standard, but board layout and heat dissipation should always be double-checked.
Can it be replaced directly?
Direct replacement for HER208 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
UF2010GP_AY_00001 is the strongest candidate, matching key electricals and package, but requires engineering review.
Main risk
The primary risk is substituting with a slower diode (e.g., standard or slower fast-recovery types), which can cause circuit failure or reduced efficiency.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | HER208 | UF2010GP_AY_00001 | FR207 | RL207 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | DO-15 | DO-15 | DO-15 | DO-15 | DO-15 — Form factor matches.; FR207: Form factor matches.; RL207: Form factor matches. |
| Voltage | 1000V | 1000V | 1000V | 1000V | 1000V — Reverse voltage rating matches.; FR207: Reverse voltage rating matches.; RL207: Reverse voltage rating matches. |
| Current | 2.0A | 2A | 2.0A | 2.0A | 2A / 2.0A — Forward current rating matches.; FR207: Forward current rating matches.; RL207: Forward current rating matches. |
| Trr | 70ns | 75ns | 500ns | - | 75ns / 500ns — Reverse recovery time is nearly identical.; FR207: Significantly slower reverse recovery time. |
| Vf | 1.7V | 1.7V | - | - | 1.7V — Forward voltage matches. |
| Diode Type | High-Efficiency (70ns) | - | - | Standard (>500ns) | Standard (>500ns) — Candidate is a much slower standard recovery diode. |
Application & sourcing insights
Questions & answers
Verified drop-in options for HER208 are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.