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NE555DR / SA555DR Precision Timer IC — SOP-8 SMD, 2–15V, 200mA (20-Pack)
NE555DR / SA555DR Precision Timer IC SOP-8 SMD, 2–15V, 200mA (20-Pack)
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NE555DR / SA555DR Precision Timer IC — SOP-8 SMD, 2–15V (20-Pack)
The NE555DR and SA555DR are the SOP-8 SMD versions of the legendary NE555 precision timer IC. Functionally identical to the classic DIP-8 NE555, they operate from 2V to 15V, source/sink up to 200mA, and support astable (oscillator), monostable (one-shot), and bistable (flip-flop) configurations. The SOP-8 package makes them ideal for compact PCB designs where through-hole DIP components are not suitable.
Key Specifications
| Parameter | Value |
|---|---|
| Part Numbers | NE555DR, SA555DR, NE555DT |
| Package | SOP-8 (SMD) |
| Supply Voltage | 2V – 15V (NE555DR: 4.5–15V; SA555DR: 2–15V) |
| Output Current | 200mA source/sink |
| Timing Accuracy | ±1% (with stable R/C components) |
| Max Oscillation Frequency | ~500kHz (astable mode) |
| Operating Temperature | 0°C to +70°C (NE555DR) / -40°C to +85°C (SA555DR) |
| Quantity | 20 pieces |
Why Choose NE555DR / SA555DR?
- SOP-8 SMD package — compact footprint for modern PCB designs, replaces DIP NE555 in surface-mount layouts
- 200mA output drive — directly drives LEDs, small relays, and transistor bases without a buffer
- Wide voltage range — SA555DR works from 2V (battery-powered) to 15V (industrial supply)
- Pin-compatible with DIP NE555 — same circuit topology, just adapt PCB footprint
- 20-pack value — sufficient for lab stock, multiple projects, and repair work
Compatible With / Common Use Cases
- PWM generation: Astable mode with variable resistor for motor speed control and LED dimming
- Debounce circuit: Monostable mode to clean up noisy button signals for Arduino inputs
- Tone generator: Astable mode driving a piezo buzzer for alarm and notification circuits
- Missing pulse detector: Monostable mode to detect signal interruptions in safety circuits
- Voltage-controlled oscillator (VCO): Control pin modulation for basic FM/AM signal generation
Frequently Asked Questions
Q: What is the difference between NE555DR and SA555DR?
A: Both are SOP-8 SMD 555 timers. The NE555DR operates from 4.5–15V and is rated 0°C to +70°C (commercial grade). The SA555DR operates from 2–15V and is rated -40°C to +85°C (industrial/automotive grade). For battery-powered or outdoor applications, prefer the SA555DR.
Q: Can I use NE555DR as a direct replacement for the DIP-8 NE555?
A: Electrically yes — same pinout and function. You need to adapt the PCB footprint from DIP-8 (2.54mm pitch) to SOP-8 (1.27mm pitch). Use a DIP-to-SOP adapter board for breadboard prototyping.
Q: What is the maximum PWM frequency I can generate with the NE555?
A: In astable mode, the NE555 can oscillate up to approximately 500kHz with small R/C values. For higher-frequency PWM (above 100kHz), consider a dedicated PWM IC like the SG3525 or a microcontroller timer output instead.
Package Contents
- 20× NE555DR / SA555DR Precision Timer IC (SOP-8 SMD)
