Diodes Incorporated BZX84C10T-7-F

Overview

BZX84C10T-7-F from Diodes Incorporated is a 10 V, 150 mW surface-mount Zener diode in SOT-523 package, rated for 5 mA test current with 9.4–10.6 V zener voltage tolerance, 20 Ω max zener impedance at I_ZT, and 0.2 µA max reverse leakage at 7.0 V. It provides precision voltage regulation in low-power biasing and reference circuits.

For engineers reviewing the BZX84C10T-7-F datasheet, BZX84C10T-7-F pinout, BZX84C10T-7-F application, or BZX84C10T-7-F equivalent, key selection criteria include zener voltage tolerance, dynamic impedance at 5 mA, thermal resistance (833 °C/W), reverse leakage at rated VR, and SOT-523 footprint compatibility with high-density PCB layouts.

Technical Context

This Zener diode uses planar die construction to ensure stable breakdown characteristics and tight voltage distribution across production lots. Its ultra-small SOT-523 package supports automated placement in space-constrained applications while maintaining thermal performance up to 150 mW dissipation at 25 °C ambient.

The device exhibits a positive temperature coefficient of +4.5 to +8.0 mV/°C at 5 mA, enabling predictable drift behavior in temperature-varying environments. Reverse leakage remains ≤0.2 µA at 7.0 V, supporting low-current standby regulation without significant quiescent loss.

Key Specifications

Pinout & Package

Package: SOT-523 - ultra-compact 3-terminal surface-mount plastic package (1.60 mm × 0.80 mm × 0.50 mm), UL 94V-0 rated, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Compared with MMBZ5240BS-7-F and BZX84-C10LT1G, BZX84C10T-7-F delivers the lowest zener impedance (20 Ω) and tightest leakage (0.2 µA) in the SOT-523 footprint-making it optimal for precision, space-constrained, low-quiescent applications.

Availability

BZX84C10T-7-F is available at Aetrix Electronics and suitable for portable sensor biasing, USB peripheral voltage reference, and industrial PLC input protection requiring stable component supply and RoHS-compliant sourcing.

Supply support for BZX84C10T-7-F includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The BZX84 series belongs to Diodes' general-purpose Zener diode product line, engineered for cost-effective, high-reliability voltage regulation and clamping in consumer, industrial, and computing applications.

FAQ

What is the maximum reverse voltage this Zener can regulate without exceeding its power limit?

At 25 °C ambient, BZX84C10T-7-F sustains 150 mW dissipation. With nominal V_Z = 10 V, maximum regulated current is 15 mA (150 mW ÷ 10 V). Derating applies above 25 °C per the 833 °C/W R_θJA curve - e.g., at 70 °C ambient, max power drops to ~90 mW, limiting I_Z to ~9 mA.

Does this part have polarity marking, and how is it identified on the SOT-523 package?

Yes - polarity is marked on the top surface of the SOT-523 case. The cathode is indicated by a single horizontal bar or "K"-like symbol adjacent to the cathode terminal. Per Diodes' marking convention, the full type code (e.g., "R9") appears beside the polarity mark, with the bar aligned to the cathode end.

Can BZX84C10T-7-F be used in AC signal clipping applications?

Yes - its symmetric forward (0.9 V @ 10 mA) and reverse (10 V) conduction thresholds enable bidirectional clipping. However, due to its 150 mW rating and 20 Ω Z_ZT, it is suited only for low-amplitude, low-frequency signals (<100 kHz) where average power remains below derated limits.

Is the SOT-523 package compatible with standard reflow profiles for lead-free assembly?

Yes - the device is qualified for lead-free reflow per J-STD-020D Level 1 moisture sensitivity. Its matte tin finish and Alloy 42 leadframe support peak temperatures up to 260 °C. Recommended profile follows IPC/JEDEC J-STD-020, with ramp rates ≤3 °C/s and time above 217 °C limited to 60–150 seconds.