STTH1R06A
STMicroelectronics
Needs validationlow risk
A 600V, 1A ultrafast diode in a matching SMA package, offering faster recovery and lower forward voltage.
Best Alternatives to RS1J
RS1J is a 600V, 1A fast recovery diode in an SMA package, used in power applications. Alternatives exist but require careful review of reverse recovery time (trr).
AI replacement insight
Electrical riskmedium
Recovery time (trr) is a critical parameter that differs across candidates, requiring design review.
Package risklow
All viable candidates use the same SMA package, ensuring form and fit compatibility.
Can it be replaced directly?
No exact 1:1 replacement is listed. The closest options are upgrades (faster trr) or downgrades (slower trr). STTH1R06A is a strong candidate but is an ultrafast diode.
Best replacement path
Upgrade to a faster diode like STTH1R06A or MURS260A for better performance, after verifying circuit stability with the faster switching speed.
Main risk
The primary risk is a mismatch in reverse recovery time (trr), which is critical for the diode's function in switching circuits.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | RS1J | STTH1R06A | MURS260A | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMA | SMA | SMA (DO-214AC) | SMA / SMA (DO-214AC) — Package matches.; MURS260A: Package matches. | |
| Voltage | 600V | 600V | 600V | 600V — Reverse voltage matches.; MURS260A: Reverse voltage matches. | |
| Current | 1A | 1A | 2A | 1A / 2A — Forward current matches.; MURS260A: Higher current rating provides more margin. | |
| Trr | 250ns | 25ns | 50ns | 25ns / 50ns — Significantly faster recovery time.; MURS260A: Significantly faster recovery time. | |
| Vf | 1.3V | 1.0V | - | 1.0V — Lower forward voltage improves efficiency. |
Application & sourcing insights
Questions & answers
STTH1R06A and MURS260A are strong upgrade candidates, offering faster performance in the same package. However, their higher speed requires design verification.