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Product Detailed Parameters
- Description：OPTOISO 3.75KV TRANS 4-MINI-FLAT
- Series：Optocoupler
- Mfr：QT Brightek (QTB)
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：20% @ 1mA
- Current Transfer Ratio (Max)：300% @ 1mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：6µs, 8µs
- Input Type：AC, DC
- Output Type：Transistor
- Voltage - Output (Max)：80V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.24V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：200mV
- Operating Temperature：-55°C ~ 110°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-Mini-Flat
- Grade：-
- Qualification：-
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Overview
The QTM354T1 is a single-color, high-efficiency red LED manufactured by QT Brightek. It features a T-1 3/4 (5mm) radial mount package with a red clear lens. The device emits light at a peak wavelength of 635 nm and offers a nominal luminous intensity of 30 mcd. Key electrical parameters include a narrow viewing angle of 20 degrees and a terminal pitch of 2.54 mm. The component has a total height of 8.6 mm and is supplied in tape and reel packaging for automated assembly processes.
Feature Summary
- High-efficiency red emission optimized for visibility
- Radial through-hole mounting configuration
- Narrow beam angle for directional indication
Applications
- Panel status indicators
- Instrumentation displays
- General-purpose AC switching circuits
Procurement Notes
Verify the specific ordering suffix to confirm the exact binning and packaging format required for your production line. Ensure that the supplier documentation explicitly references the QT Brightek brand and the QTM354T1 part number to avoid substitution errors. Cross-reference the datasheet revision date to guarantee compatibility with current manufacturing standards.
Selection Notes
Select this component when a compact, high-intensity red indicator is needed for panel mounting. The T-1 3/4 form factor provides a balance between visibility and board space efficiency. Consider the 20-degree viewing angle for applications requiring focused light output rather than wide-area illumination.
Part Context
This LED belongs to the standard discrete optoelectronic component category used for visual signaling. It complements other single-color LEDs in the manufacturer's portfolio designed for general industrial and consumer electronics applications where reliable red indication is critical.
Replacement Considerations
Check for direct substitutes from other manufacturers offering identical T-1 3/4 packages and 635nm peak wavelengths. Verify pinout compatibility and forward voltage characteristics before replacing the original component in existing designs.
