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A201-1
Electronics Part Number
A201-1-WXManufacturer
Vishay Semiconductor - Opto Division
A201-1
Description
Force Sensor with 9.5mm Sensing Diameter and 45N Force RangeInventory
189 Pcs New Original In Stock
Force sensing resistor; 0.45kgf (1lb) rating; thin-film pressure element; for touch detection, presence sensing, and consumer electronics.
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Basic cost: USD 70.00
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Technical Specifications
Category
IrDA Transceiver Modules
Manufacturer
Vishay Semiconductor - Opto Division
Packaging
Cut Tape (CT) & Digi-Reel®
Operating Temperature
-30°C ~ 85°C
Series
-
Base Product Number
TFBS4711
Size
6.0mm x 3.0mm x 1.9mm
Product Status
Active
Voltage - Supply
2.7 V ~ 5.5 V
Standards
IrPHY 1.2
Orientation
Side View
Data Rate
115.2kbs (SIR)
Idle Current, Typ @ 25°C
75 µA
Link Range, Low Power
1m
Data Sheet Document (D)
Datasheets
Download TFBS4711-TR1 Product Specification (PDF)
HTML Datasheet
TFBS4711-TR1-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
4 (72 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.49.1050
Additional Information
Other Names
751-1066-2 751-1066-1 TFBS4711TR1 751-1066-6
Standard Package
1,000
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Frequently Asked Questions (FAQ)
What are the key design considerations when replacing the TFBS4711-TR1 with a similar IrDA transceiv
When considering a replacement such as the TFDU4101 for the TFBS4711-TR1 in low-power designs, verify compatibility with 2.7 V to 5.5 V supply range and confirm idle current behavior—TFBS4711-TR1 draws 75 µA typical, which is critical for battery-powered applications. The TFDU4101 has slightly higher power consumption in idle mode and a different side-view mechanical profile, potentially requiring PCB and aperture alignment adjustments. Additionally, ensure IrPHY 1.2 compliance is maintained for reliable SIR (115.2 kbps) communication. Always review the mechanical footprint and beam alignment characteristics to avoid reduced link range or unreliable connections after substitution.
How does the side-view orientation of the TFBS4711-TR1 impact PCB layout and mechanical enclosure de
The side-view configuration of the TFBS4711-TR1 requires careful alignment of the IR window on the enclosure directly opposite the lens plane, which emits and receives through the long edge of the 6.0mm x 3.0mm x 1.9mm package. In handheld designs, misalignment between the transceiver and the front bezel aperture can severely reduce the effective 1-meter low-power link range. Position the TFBS4711-TR1 near the board edge with minimal obstruction, and avoid placing reflective surfaces or LEDs nearby to prevent optical crosstalk. Use molding materials with high IR transmissivity in the 875 nm range to maintain reliable IrDA communication.
Can the TFBS4711-TR1 reliably operate at the 85°C upper limit of its specified temperature range in
The TFBS4711-TR1 is rated for operation up to 85°C, but in enclosed industrial environments with limited airflow, thermal buildup may affect both the transceiver’s optical output efficiency and receiver sensitivity. To ensure reliable 115.2 kbps SIR communication at high ambient temperatures, validate performance under real-world thermal conditions, especially when paired with heat-generating components. Consider derating the maximum link distance or increasing drive current marginally (within datasheet limits) to compensate for reduced LED output at elevated temperatures. Monitor long-term reliability, as sustained high-temp operation may accelerate aging of the epoxy lens material in the TFBS4711-TR1.
What are the risks of using the TFBS4711-TR1 in a high-humidity environment, and how can moisture se
The TFBS4711-TR1’s MSL 4 rating (72-hour floor life at <30°C/60% RH) means it is susceptible to moisture absorption during handling, posing a risk of 'popcorning' during reflow soldering in humid environments. If not stored in dry cabinets or baked per JEDEC guidelines before assembly, internal delamination can occur, leading to latent field failures. In high-humidity use cases, ensure the final enclosure provides adequate sealing, as prolonged exposure may degrade the optical interface or cause leakage currents. For manufacturing, implement strict humidity control and track exposure time after unsealing moisture barrier bags to prevent assembly defects with the TFBS4711-TR1.
How does the 115.2 kbps data rate limitation of the TFBS4711-TR1 affect its suitability for modern I
The TFBS4711-TR1 supports only SIR (115.2 kbps), which limits its use in IoT applications requiring faster data exchange, such as firmware updates or sensor burst transmissions. While sufficient for basic control or configuration tasks, this data rate may bottleneck performance compared to MIR (1.152 Mbps) or FIR-capable transceivers like the TFDU6103. However, for legacy system compatibility, low power (75 µA idle), and simple point-to-point links, TFBS4711-TR1 remains a reliable choice. Evaluate whether the trade-off in speed is acceptable against the benefits of low power consumption, small 6.0mm x 3.0mm footprint, and proven IrPHY 1.2 interoperability in your IoT design.
What are the key design considerations when replacing the TFBS4711-TR1 with a similar IrDA transceiv
When considering a replacement such as the TFDU4101 for the TFBS4711-TR1 in low-power designs, verify compatibility with 2.7 V to 5.5 V supply range and confirm idle current behavior—TFBS4711-TR1 draws 75 µA typical, which is critical for battery-powered applications. The TFDU4101 has slightly higher power consumption in idle mode and a different side-view mechanical profile, potentially requiring PCB and aperture alignment adjustments. Additionally, ensure IrPHY 1.2 compliance is maintained for reliable SIR (115.2 kbps) communication. Always review the mechanical footprint and beam alignment characteristics to avoid reduced link range or unreliable connections after substitution.
How does the side-view orientation of the TFBS4711-TR1 impact PCB layout and mechanical enclosure de
The side-view configuration of the TFBS4711-TR1 requires careful alignment of the IR window on the enclosure directly opposite the lens plane, which emits and receives through the long edge of the 6.0mm x 3.0mm x 1.9mm package. In handheld designs, misalignment between the transceiver and the front bezel aperture can severely reduce the effective 1-meter low-power link range. Position the TFBS4711-TR1 near the board edge with minimal obstruction, and avoid placing reflective surfaces or LEDs nearby to prevent optical crosstalk. Use molding materials with high IR transmissivity in the 875 nm range to maintain reliable IrDA communication.
Can the TFBS4711-TR1 reliably operate at the 85°C upper limit of its specified temperature range in
The TFBS4711-TR1 is rated for operation up to 85°C, but in enclosed industrial environments with limited airflow, thermal buildup may affect both the transceiver’s optical output efficiency and receiver sensitivity. To ensure reliable 115.2 kbps SIR communication at high ambient temperatures, validate performance under real-world thermal conditions, especially when paired with heat-generating components. Consider derating the maximum link distance or increasing drive current marginally (within datasheet limits) to compensate for reduced LED output at elevated temperatures. Monitor long-term reliability, as sustained high-temp operation may accelerate aging of the epoxy lens material in the TFBS4711-TR1.
What are the risks of using the TFBS4711-TR1 in a high-humidity environment, and how can moisture se
The TFBS4711-TR1’s MSL 4 rating (72-hour floor life at <30°C/60% RH) means it is susceptible to moisture absorption during handling, posing a risk of 'popcorning' during reflow soldering in humid environments. If not stored in dry cabinets or baked per JEDEC guidelines before assembly, internal delamination can occur, leading to latent field failures. In high-humidity use cases, ensure the final enclosure provides adequate sealing, as prolonged exposure may degrade the optical interface or cause leakage currents. For manufacturing, implement strict humidity control and track exposure time after unsealing moisture barrier bags to prevent assembly defects with the TFBS4711-TR1.
How does the 115.2 kbps data rate limitation of the TFBS4711-TR1 affect its suitability for modern I
The TFBS4711-TR1 supports only SIR (115.2 kbps), which limits its use in IoT applications requiring faster data exchange, such as firmware updates or sensor burst transmissions. While sufficient for basic control or configuration tasks, this data rate may bottleneck performance compared to MIR (1.152 Mbps) or FIR-capable transceivers like the TFDU6103. However, for legacy system compatibility, low power (75 µA idle), and simple point-to-point links, TFBS4711-TR1 remains a reliable choice. Evaluate whether the trade-off in speed is acceptable against the benefits of low power consumption, small 6.0mm x 3.0mm footprint, and proven IrPHY 1.2 interoperability in your IoT design.
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Sep 15 2026
