
A functional alternative from Hirose with the same pin count and pitch, but different mechanical height and lower electrical ratings.
YXT-BB10-50S-02 is a 50-pin, 0.4mm pitch board-to-board socket. Finding a direct replacement is challenging due to its specific 0.8mm mating height, requiring careful review of alternatives for mechanical and electrical compatibility.
Mating/stacking height is a critical dimension that differs in most alternatives.
Alternatives have lower current and voltage ratings, requiring circuit re-evaluation.
The target is from a regional manufacturer; alternatives may have better global availability but require a redesign.
No direct, drop-in replacement for YXT-BB10-50S-02 is currently confirmed. All potential candidates require design modifications.
Cross-reference to another manufacturer's series with matching stacking height (0.8mm), pitch, and pin count, which requires specific datasheet investigation.
The primary risk is mechanical mismatch, specifically the 0.8mm mated height. Electrical downgrades in current and voltage are also significant concerns.

A functional alternative from Hirose with the same pin count and pitch, but different mechanical height and lower electrical ratings.
| Feature / factor | YXT-BB10-50S-02 | DF40HC(3.5)-50DS-0.4V(51) | DF40C-50DS-0.4V(51) | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMD | SMD | SMD | SMD — Mounting type matches.; DF40C-50DS-0.4V(51): Mounting type matches. | |
| Pinout | 0.8 mm | 3.5 mm | 1.5 mm | 3.5 mm / 1.5 mm — Stacking height is a critical mechanical difference.; DF40C-50DS-0.4V(51): Stacking height is a critical mechanical difference. | |
| Current | 0.5 A | 0.3 A | 0.3 A | 0.3 A — Candidate has lower current rating.; DF40C-50DS-0.4V(51): Candidate has lower current rating. | |
| Voltage | 60 V | 50 V | 30 V | 50 V / 30 V — Candidate has lower voltage rating.; DF40C-50DS-0.4V(51): Candidate has significantly lower voltage rating. | |
| Temperature | -55°C to +85°C | -35°C to +85°C | -35°C to +85°C | -35°C to +85°C — Candidate has a narrower operating temperature range.; DF40C-50DS-0.4V(51): Candidate has a narrower operating temperature range. |
There are no direct drop-in replacements. Alternatives like the Hirose DF40 series have the same pin count and pitch but differ in mechanical height and have lower electrical ratings, requiring design changes.