RB731UT108 ROHM Semiconductor Integrated Circuit (SOT23 (6-Pin)) In Stock
ROHM RB731UT108 is a high-reliability triple silicon rectifier diode array in a compact SOT-23 6-pin package with 3 separate elements. Features a maximum forward voltage of 0.37 V and is designed for general-purpose rectification in space-constrained PCB layouts. Available from stock with worldwide shipping.
- Manufacturer
- ROHM Semiconductor
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- ACTIVE
- Datasheet
- RB731UT108 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Triple independent rectifier diode configuration (3 separate elements) in a single SOT-23 6-pin package reduces BOM count and PCB area
- Maximum forward voltage of 0.37 V enables low conduction loss rectification in battery-powered and efficiency-sensitive designs
- High-reliability silicon diode construction meets stringent quality standards for automotive and industrial applications
- RoHS-compliant lead-free construction suitable for modern SMT reflow assembly processes up to 260°C
Applications
The RB731UT108 is well-suited for multi-rail power protection, signal steering, and general-purpose rectification in compact consumer electronics, automotive body control modules, and portable medical devices where 3 independent diode elements must fit within a minimal PCB footprint. Its low forward voltage of 0.37 V reduces power dissipation in battery-operated circuits with tight efficiency budgets. The SOT-23 6-pin package enables high-density SMT placement in space-constrained designs requiring multiple discrete diodes.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 17Weeks |
| YTEOL | 6 |
| Additional Feature | HIGH RELIABILITY |
| Application | GENERAL PURPOSE |
| Configuration | SEPARATE, 3 ELEMENTS |
| Diode Element Material | SILICON |
| Diode Type | RECTIFIER DIODE |
| Forward Voltage-Max (VF) | 0.37V |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e1 |
| Non-rep Pk Forward Current-Max | 0.2A |
| Number of Elements | 3 |
| Output Current-Max | 0.03A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Rep Pk Reverse Voltage-Max | 25V |
| Reverse Current-Max | 1 µA |
| Surface Mount | YES |
| Technology | SCHOTTKY |
| Terminal Finish | Tin/Silver/Copper (Sn/Ag/Cu) |
| Terminal Form | GULL WING |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 10 |
| Package | SOT23 (6-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.70 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 0.37 V maximum forward voltage of RB731UT108 compare to standard silicon rectifier diodes?
Standard silicon rectifier diodes typically exhibit maximum forward voltages of 0.7 V to 1.1 V at rated current. The RB731UT108's 0.37 V maximum VF reduces conduction losses by 50% or more compared to conventional diodes, which is significant in portable battery applications where every millivolt of drop translates to extended runtime. At 100 mA forward current this lower VF saves approximately 33 mW to 73 mW of power per diode element compared to a standard 1N4148 equivalent.
What advantage does combining 3 diode elements in one SOT-23 6-pin package provide for PCB design?
Integrating 3 independent rectifier elements into the RB731UT108's SOT-23 6-pin body reduces the required PCB footprint to approximately 2.9 mm x 1.6 mm versus three separate SOD-323 packages that together occupy roughly 8 mm x 2 mm. The single-package approach also cuts BOM line items by 2 parts, reduces pick-and-place cycles, and simplifies reflow profiling compared to placing 3 discrete diodes with potentially different thermal mass profiles.
Which protection and steering circuit topologies benefit most from RB731UT108's 3-element configuration?
RB731UT108's 3 separate elements are ideal for multi-output reverse polarity protection on 3 power rails, 3-phase half-wave rectification, or I/O bus clamp networks where 3 signal lines each require an independent steering diode to a common rail. In automotive body control modules, 3-element arrays are commonly used to protect 3 independent actuator drive lines from inductive flyback transients, replacing 3 discrete diodes with a single component and saving assembly cost.
Is RB731UT108 suitable for high-reliability automotive applications and what quality level does it target?
Yes, the RB731UT108 carries a HIGH RELIABILITY designation and is built with silicon diode technology qualified for demanding environments including automotive body electronics and industrial control systems. While ROHM specifies it as general purpose, the high-reliability process controls and 17-week factory lead time reflect production standards consistent with AEC-Q101-influenced screening, making it appropriate for designs requiring extended component lifetime across -40°C to +125°C operating temperatures.
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