PACSZ1284-04QR

Description：FILTER RC 33 OHMS ESD SMD
Series：-
Mfr：onsemi
Package：Tape & Reel (TR)

SKU:dec7f11cbb9c Category: EMI/RFI Filters (LC, RC Networks) Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：FILTER RC 33 OHMS ESD SMD
Series：-
Mfr：onsemi
Package：Tape & Reel (TR)
Type：Low Pass
Filter Order：-
Technology：RC
Number of Channels：17
Center / Cutoff Frequency：-
Attenuation Value：-
Resistance - Channel (Ohms)：-
Values：R = 33Ohms, 4.7kOhms, C = 150pF
ESD Protection：Yes
Operating Temperature：-40°C ~ 85°C
Applications：Data Lines for Mobile Devices
Voltage - Rated：-
Mounting Type：Surface Mount
Package / Case：28-LSSOP (0.154", 3.90mm Width)
Size / Dimension：0.389" L x 0.154" W (9.89mm x 3.90mm)
Height：0.069" (1.75mm)
Current：-
Grade：-
Qualification：-

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PACSZ1284-04QR

Overview

The PACSZ1284-04QR is a parallel port ESD and termination network manufactured by onsemi. It integrates an RC low-pass filter with 17 channels, featuring resistors of 33 Ohms and 4.7 kOhms, and capacitors of 150 pF. The component is housed in a 28-LSSOP package measuring 9.89mm x 3.90mm. Designed for IEEE 1284 interfaces, it provides protection against electrostatic discharge and electromagnetic interference while maintaining signal integrity for data lines.

Feature Summary

Integrates RC low-pass filtering for EMI suppression
Provides ESD protection for parallel port data lines
Pin-compatible with legacy ST1284-01 designs

Applications

IEEE 1284 parallel port interface protection
Mobile device data line shielding
EMI/RFI filtering for high-speed digital signals

Procurement Notes

Verify the specific suffix -04QR to confirm the tape-and-reel packaging configuration (MouseReel) required for automated assembly processes. Ensure compatibility with the 28-LSSOP footprint during PCB layout validation. Confirm that the component status is active for current production needs, as availability may vary by region.

Selection Notes

Select this component when designing systems requiring integrated ESD protection and signal termination for parallel ports. It serves as a direct replacement for older discrete solutions or the ST1284-01. Consider the 28-LSSOP package size constraints and the specific resistance and capacitance values required for your signal frequency range.

Part Context

This part belongs to onsemi's portfolio of ESD suppressors and terminators designed for high-density digital interfaces. It addresses the growing need for compact, integrated protection solutions in mobile and consumer electronics where space is limited and signal integrity is critical for reliable data transmission.

Replacement Considerations

The PACSZ1284-04QR is pin-compatible with the Inmos ST1284-01. Verify electrical parameters such as capacitance tolerance and resistance values against the original design specifications before substitution to ensure signal integrity is maintained.