Diodes Incorporated BZX84C3V3TS-7-F

Overview

BZX84C3V3TS-7-F from Diodes Incorporated is a triple-surface-mount Zener diode array with three isolated 3.3 V ±0.2 V Zener elements in a single SOT-363 package, rated for 200 mW total power dissipation, 5 mA test current, and 95 Ω maximum Zener impedance at 1 kHz; used for voltage regulation and overvoltage protection in compact DC power rails.

For engineers reviewing the BZX84C3V3TS-7-F datasheet, BZX84C3V3TS-7-F pinout, BZX84C3V3TS-7-F application, or BZX84C3V3TS-7-F equivalent, key selection criteria include nominal Zener voltage (3.3 V), reverse leakage (≤5.0 µA at 1.0 V), temperature coefficient (–3.5 to 0 mV/°C), and SOT-363 footprint compatibility with space-constrained PCB layouts.

Technical Context

This device integrates three independent Zener diodes sharing only mechanical packaging-no internal electrical connection-enabling simultaneous regulation of multiple low-voltage rails (e.g., 3.3 V, 5 V, and I/O supply) from one footprint. Each element operates with a specified Zener voltage tolerance of ±0.2 V at 5 mA and exhibits stable breakdown behavior down to 0.5 mA minimum knee current.

Thermal performance is defined by a junction-to-ambient thermal resistance of 625 °C/W on FR4 board with recommended pad layout, supporting operation across –65 °C to +150 °C. The device uses matte tin-plated Alloy 42 leads and green molding compound compliant with RoHS and halogen-free requirements.

Key Specifications

Pinout & Package

SOT-363 (SC-70-6) package with six terminals: three anodes (A1, A2, A3) and three cathodes (C1, C2, C3), arranged in dual-row surface-mount configuration. Pin 1 = A1, Pin 2 = C1, Pin 3 = A2, Pin 4 = C2, Pin 5 = A3, Pin 6 = C3 (top-view orientation per datasheet diagram).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5226BS-7-F and BZX84C3V3LT1G, BZX84C3V3TS-7-F uniquely delivers three electrically isolated 3.3 V Zener functions in one SOT-363 footprint-reducing component count by 67%, minimizing interconnect inductance, and enabling matched thermal tracking across rails.

Availability

BZX84C3V3TS-7-F is available at Aetrix Electronics and suitable for USB peripheral design, IoT sensor node development, industrial PLC I/O protection, and automotive body control module production requiring stable component supply and long-term lifecycle assurance.

Supply support for BZX84C3V3TS-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 and manufacturing operations across Asia and the Americas.

The BZX84 series belongs to Diodes' precision Zener diode portfolio, engineered specifically for compact, high-reliability voltage regulation and transient suppression in consumer, industrial, and automotive electronics.

FAQ

What is the maximum continuous Zener current for BZX84C3V3TS-7-F at 25°C?

The device is rated for 200 mW total power dissipation. At its nominal 3.3 V Zener voltage, this corresponds to a maximum continuous current of approximately 60.6 mA (200 mW ÷ 3.3 V). Derating begins above 25°C per the published 625 °C/W thermal resistance curve.

Can BZX84C3V3TS-7-F be used in place of three individual BZX84C3V3LT1G diodes?

Yes-each of the three Zener elements in BZX84C3V3TS-7-F matches the electrical specifications of BZX84C3V3LT1G (3.3 V, 5 mA test current, 95 Ω Z_ZT). However, the TS variant provides physical isolation between elements, whereas LT1G is single-die; layout must accommodate six independent terminals instead of three dual-terminal packages.

Is the SOT-363 package of BZX84C3V3TS-7-F compatible with standard reflow profiles?

Yes-the device is qualified to J-STD-020D Level 1 moisture sensitivity and supports standard lead-free reflow profiles (peak 260°C, 30 sec max). Its matte tin finish and UL 94V-0 mold compound ensure robust solder joint formation and thermal reliability during assembly.

Does BZX84C3V3TS-7-F require external series resistors in typical shunt regulator configurations?

Yes-like all Zener diodes, it requires a current-limiting resistor to set operating current within the 1–20 mA range for optimal regulation. For a 5 V input regulating 3.3 V at 5 mA, a 340 Ω resistor (±5%) provides proper bias while staying within 200 mW total package dissipation.