SP1105S-01UTG LITTELFUSE TVS Diode (Uni-directional) (Other) In Stock
Littelfuse SP1105S-01UTG is a unidirectional TVS diode with 6.75 V nominal breakdown voltage and 9.2 V maximum clamping voltage in a compact SOD-323 package. Designed for transient overvoltage protection with silicon construction and single-channel configuration. Available from stock with worldwide shipping.
- Manufacturer
- LITTELFUSE
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- SP1105S-01UTG Datasheet PDF
- Category
- TVS Diode (Uni-directional)
- Price
- From $0.0915(MOQ 100)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Unidirectional TVS with 6.75 V nominal breakdown voltage protecting sensitive ICs from transient spikes
- Low clamping voltage of 9.2 V max ensuring tight overvoltage protection for 5 V and 3.3 V rails
- Compact SOD-323 package enabling space-efficient PCB placement in portable electronics
- Silicon-based transient voltage suppressor diode rated for AEC-Q101 automotive-grade qualification
Applications
The SP1105S-01UTG is used to protect sensitive signal lines and power rails in consumer electronics, mobile devices, and industrial control systems from electrostatic discharge (ESD) and transient overvoltage events. With its 6.75 V breakdown and 9.2 V clamping voltage, it is well-suited for protecting USB, I2C, and GPIO signal lines operating at 3.3 V to 5 V. Its compact SOD-323 footprint makes it ideal for space-constrained designs in wearables and portable instruments.
Specifications
| YTEOL | 6.81 |
| Breakdown Voltage-Max | 7.5V |
| Breakdown Voltage-Min | 6V |
| Breakdown Voltage-Nom | 6.75V |
| Clamping Voltage-Max | 9.2V |
| Configuration | SINGLE |
| Diode Element Material | SILICON |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE |
| JESD-30 Code | R-PBCC-N2 |
| JESD-609 Code | e4 |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | CHIP CARRIER |
| Peak Reflow Temperature (Cel) | 260 |
| Polarity | UNIDIRECTIONAL |
| Reference Standard | AEC-Q101; IEC-61000-4-2, 4-4, 4-5 |
| Rep Pk Reverse Voltage-Max | 5V |
| Reverse Current-Max | 1 µA |
| Reverse Test Voltage | 5V |
| Surface Mount | YES |
| Technology | AVALANCHE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Position | BOTTOM |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.50 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What are the breakdown voltage and clamping voltage specifications of the SP1105S-01UTG?
The SP1105S-01UTG has a nominal breakdown voltage of 6.75 V (min 6 V, max 7.5 V) and a maximum clamping voltage of 9.2 V. This tight clamping window makes it effective for protecting 5 V and 3.3 V signal lines from transient overvoltage events exceeding 1 A peak pulse current.
Which signal interfaces can the SP1105S-01UTG protect in a 3.3 V embedded system?
The SP1105S-01UTG can protect USB data lines, I2C buses, UART, and GPIO pins operating at 3.3 V or 5 V. Its 6.75 V nominal breakdown ensures the TVS stays non-conductive during normal 3.3 V operation, while clamping transients below 9.2 V to safeguard downstream ICs from ESD damage.
How does the SP1105S-01UTG compare to a bidirectional TVS for AC-coupled signal line protection?
The SP1105S-01UTG is a unidirectional device, making it best for DC-biased signal lines where surges appear only in one polarity. For AC-coupled lines or differential signals, a bidirectional TVS would be preferred. The unidirectional type offers a lower clamping voltage of 9.2 V max in the forward direction, yielding better protection for 5 V DC logic compared to bidirectional equivalents.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
About LITTELFUSE
LITTELFUSE is a leading electronic component manufacturer. FindMyChip sources LITTELFUSE ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.2359 | $23.59 |
| 500+ | $0.1777 | $88.83 |
| 1000+ | $0.1589 | $158.86 |
| 3000+ | $0.1010 | $303.00 |
| 9000+ | $0.0950 | $855.00 |
| 15000+ | $0.0915 | $1373.10 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”