High-speed photo relays from Toshiba at Rutronik

This significantly increases efficiency in test systems. In addition, the 20% smaller S-VSON4T package saves valuable space on the circuit board. These performance features make the relays the ideal choice for pin electronics applications in semiconductor testers that require high switching speeds and precise signal control. The photo relays are available at Rutronik.

The TLP3414S has a maximum switch-on resistance of 3Ω, the TLP3431S even only 1.2Ω. The typical output capacitance of both variants is 6.5pF – a decisive factor in reducing high-frequency signal losses when switched off. The voltage and current values in the ON and OFF phases are 40V / 250mA for the TLP3414S and 20V / 450mA for the TLP3431S.

Both photo relays are encased in the space-saving S-VSON4T housing with dimensions of just 1.45 × 2.0 × 1.3mm. This not only supports the miniaturisation of modern test systems but also improves thermal and electrical performance thanks to shorter signal paths.

Benefits at a glance:

• Faster switching times: Up to 62% shorter switch-on times compared to previous models (only 150μs)
• Compact design: new S-VSON4T housing saves around 20% platinum surface area

High switching capacity:

• TLP3414S: 40V / 250mA
• TLP3431S: 20V / 450mA

Low ON resistance:

• TLP3414S: max. 3Ω
• TLP3431S: max. 1.2Ω
• Low output capacitance: typically 6.5pF

Optimised optical coupling:

• Improved infrared LEDs and photodiode arrays for high efficiency

Application examples:

• Pin electronics of automatic test equipment (ATE)