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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 6.8V SMD3
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT),Cut Tape (CT)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：6.8 V
- Tolerance：±5%
- Power - Max：200 mW
- Impedance (Max) (Zzt)：40 Ohms
- Current - Reverse Leakage @ Vr：500 nA @ 3.5 V
- Operating Temperature：-
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SMD3
- Voltage - Forward (Vf) (Max) @ If：-
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Overview
The STZ6.8NT146 is a low capacitance Zener diode manufactured by ROHM Semiconductor, designed for terminal protection applications in automotive environments. It features a dual common anode configuration housed in a compact SMD3 (SOT-23) package with three terminals. The device provides a nominal Zener voltage of 6.8 V with a maximum power dissipation of 200 mW. It operates within a temperature range of -55 °C to +150 °C and holds AEC-Q101 qualification. Key electrical parameters include a maximum reverse leakage current of 500 nA and a Zener impedance of 40 Ohms at a test current of 5 mA.
Feature Summary
- Dual common anode configuration for efficient circuit layout
- Low capacitance design suitable for high-speed signal lines
- AEC-Q101 qualified for automotive reliability standards
Applications
- Automotive ECU input/output protection
- High-speed data line transient suppression
- Terminal protection in vehicle control modules
Procurement Notes
Verify the specific ordering suffix 'T146' corresponds to the required tape and reel quantity of 3000 units. Confirm that the SMD3 package dimensions match the target PCB footprint. Ensure the component meets the required AEC-Q101 grade for the intended automotive application environment.
Selection Notes
Select this component when a dual Zener solution is required for bidirectional or multi-point protection on a single line. The low capacitance characteristic makes it preferable over standard Zener diodes for signals exceeding typical audio frequencies. Verify that the 200 mW power rating suffices for the expected transient energy levels in the specific circuit topology.
Part Context
This part belongs to ROHM's series of low capacitance Zener diodes specifically engineered for automotive electronics. The STZ6.8N variant denotes the 6.8 V breakdown voltage within the N-series family. The T146 suffix indicates the standard taping specification used for automated surface-mount assembly processes.
Replacement Considerations
Public documentation lists the MMBZ6V8ALYFH as a similar specification alternative. Both parts share the A-common configuration and comparable voltage ratings. Verify package compatibility and exact capacitance values before substitution.
