Using SLANT IDT structure and optimizing design, a series of surface acoustic wave delay line with center frequency of 800 MHz, bandwidth of 200 MHz and delay time from 100 ns to 3 μs were developed. The insertion loss of -25 dB, feed through suppression of 35 dB and triple transmitting suppression(TTS) of 50 dB have been obtained. The passband ripple is less than 1 dBin the passband of 200MHz. The specifications of the device are very excellent.