Toshiba Releases Small Photorelays with 135°C Rating for High-Temperature Equipment Operation
February 25, 2026
Toshiba Electronic Devices & Storage Corporation
KAWASAKI, Japan–Toshiba Electronic Devices & Storage Corporation ("Toshiba") has launched four voltage-driven photorelays, "TLP3407SRB," "TLP3412SRB," "TLP3412SRHB," and "TLP3412SRLB" housed in the small S-VSON4T package. The new photorelays deliver a maximum operating temperature rating of 135°C for equipment that operates at high temperatures. Volume shipments start today.
Advances in electrification and autonomous driving now require high-density packaging of electronic components in automotive equipment. This has raised the temperatures at which automotive semiconductors operate, and testing under similar conditions is necessary to evaluate reliability; testers, burn-in equipment, probe cards, and other devices for automotive semiconductors must be able to operate at high temperatures, as must the photorelays used in them.
The maximum operating temperature of Toshiba’s new products have been pushed from the 125°C of current products[1] to 135°C by optimizing the design of built-in elements. In addition, because they are voltage-driven type photorelays with built-in resistors on the input side, no external resistor is required, reducing space requirements on mounting boards. They are also housed in a small package, the S-VSON4T, which is 1.45×2.0mm (typ.).
The combination of these factors makes the new photorelays suitable for application in automotive semiconductor testers, probe cards, and burn-in equipment, where multiple photorelays need to be mounted within a limited board space, and reliable high-temperature operation is required.
Toshiba will continue to offer a lineup of products that support high-temperature operation in equipment.
Note:
[1] TLP3407SRA, TLP3412SRA, TLP3412SRHA and TLP3412SRLA
Applications
- Semiconductor testers used to evaluate memories, SoC, LSI, etc.
- Probe cards
- Burn-in equipment
Features
- Operating temperature rating: 135°C
- Small package: S-VSON4T (1.45mm×2.0mm (typ.))
Main Specifications
(Unless otherwise specified, Ta=25°C)
| Part number | TLP3407SRB | TLP3412SRB | TLP3412SRHB | TLP3412SRLB | ||||
|---|---|---|---|---|---|---|---|---|
| Package | Name | S-VSON4T | ||||||
| Size (mm) | 1.45×2.0 (typ.), t=1.4 (max) | |||||||
| Contact | 1-Form-A (Normally opened) |
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| Absolute maximum ratings |
Operating temperature Topr (°C) | -40 to 135 | ||||||
| OFF-state output terminal voltage VOFF (V) |
60 | 60 | 60 | 60 | ||||
| ON-state current ION (A) | 1 | 0.4 | 0.4 | 0.4 | ||||
| ON-state current (pulsed) IONP (A) | 3 | 1.2 | 1.2 | 1.2 | ||||
| Recommended operating conditions |
Applied input forward voltage VIN (V) |
Typ. | 3.3 | 3.3 | 5 | 1.8 | ||
| Max | 6 | 6 | 5.5 | 3.3 | ||||
| Coupled electrical characteristics |
Limited LED current ILIM(LED) (mA) |
VIN=5.5V, Ta=135°C |
Max | - | - | 2 | - | |
| VIN=3.3V, Ta=135°C |
Max | 1 | 2 | - | - | |||
| VIN=1.8V, Ta=135°C |
Max | - | - | - | 10 | |||
| Operating voltage VFON (V) |
ION=100mA | Max | 3 | 3 | 3.9 | 1.6 | ||
| ON-state resistance RON (Ω) | Max | 0.3 | 1.5 | 1.5 | 1.5 | |||
| Electrical characteristics |
Output capacitance COFF (pF) |
V=0V, f=1MHz, t<1s |
Max | 150 | 20 | 20 | 20 | |
| OFF-state current IOFF (nA) |
VOFF=50V | Max | 1 | 1 | 1 | 1 | ||
| Switching characteristics |
Turn-on time tON (ms) |
RL=200Ω, VDD=20V, VIN=5.0V |
Max | - | - | 1.5 | - | |
| RL=200Ω, VDD=20V, VIN=3.3V |
Max | 10 | 1 | - | 0.1 | |||
| RL=200Ω, VDD=20V, VIN=1.8V |
Max | - | - | - | 0.3 | |||
| Turn-off time tOFF (ms) |
RL=200Ω, VDD=20V, VIN=5.0V |
Max | - | - | 0.5 | - | ||
| RL=200Ω, VDD=20V, VIN=3.3V |
Max | 1 | 0.5 | - | 0.225 | |||
| RL=200Ω, VDD=20V, VIN=1.8V |
Max | - | - | - | 0.15 | |||
| Isolation characteristics |
Isolation voltage BVS (Vrms) |
AC, 60s | Min | 500 | 500 | 500 | 500 | |
| Sample check & availability |  |
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Technical Articles
Small photorelay with high-speed switching
Compact photorelays with low voltage drive and high temperature operation rating
Follow the links below for more on the new products.
TLP3407SRB
TLP3412SRB
TLP3412SRHB
TLP3412SRLB
Follow the link below for more on Toshiba’s isolators and solid state relays.
Isolators/Solid State Relays
To check availability of the new products at online distributors, visit:
TLP3407SRB
TLP3412SRB
TLP3412SRHB
TLP3412SRLB
Customer Inquiries:
Optoelectronic Device Sales & Marketing Dept.
Tel: +81-44-548-2218
* Other company names, product names, and service names may be trademarks of their respective companies.
Information in this press release, including product pricing and specifications, content of services and contact information, is current and believed to be accurate on the date of the announcement, but is subject to change without prior notice. Technical and application information contained here is subject to the most recent applicable Toshiba product specifications.