Diodes Incorporated BZX84C7V5S-7-F

Overview

BZX84C7V5S-7-F from Diodes Incorporated is a dual 200 mW surface-mount Zener diode in SOT-363 package, rated for nominal 7.5 V zener voltage (7.0–7.9 V range at 5 mA test current), with 15 Ω max zener impedance at I_ZT and 1.0 µA max reverse leakage at 5.0 V. It serves as precision voltage reference and overvoltage clamp in low-power analog signal conditioning circuits.

For engineers reviewing the BZX84C7V5S-7-F datasheet, BZX84C7V5S-7-F pinout, BZX84C7V5S-7-F application, or BZX84C7V5S-7-F equivalent, key selection criteria include zener voltage tolerance, dynamic impedance at 5 mA, thermal resistance (625 °C/W), reverse leakage at VR = 5.0 V, and SOT-363 footprint compatibility with high-density PCB layouts.

Technical Context

This dual-element Zener diode integrates two independent 7.5 V zener junctions in a single SOT-363 package, sharing no internal connection - terminals C1/A1 and C2/A2 form two isolated anode-cathode pairs. Each element is characterized at 5 mA test current with ±0.5 V voltage spread and exhibits a positive temperature coefficient of +2.5 to +5.3 mV/°C.

The device operates within –65 °C to +150 °C ambient range and derates linearly above 25 °C per the published power derating curve, maintaining 200 mW dissipation only at T_A ≤ 25 °C. Its ultra-small footprint supports space-constrained applications where discrete dual-voltage referencing is required without board real estate penalty.

Key Specifications

Pinout & Package

SOT-363 package with dual independent Zener diodes. Pin 1 (C1) and Pin 2 (A1) form first diode (cathode/anode); Pin 5 (C2) and Pin 6 (A2) form second diode. Pins 3 and 4 are NC (no connection).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual Zener voltage reference applications.

Compared with MMBZ5236BS-7-F and BZX84C7V5LT1G, BZX84C7V5S-7-F uniquely delivers two matched 7.5 V Zeners in one SOT-363, enabling space-constrained dual-reference designs without performance trade-offs in impedance or leakage - critical for sensor front-ends and multi-rail power monitors.

Availability

BZX84C7V5S-7-F is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power negotiation reference, and low-power wearable battery monitoring requiring stable component supply and RoHS-compliant sourcing.

Supply support for BZX84C7V5S-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 product line, engineered specifically for voltage regulation, reference, and overvoltage protection in space- and power-constrained applications across consumer, industrial, and computing markets.

FAQ

What is the maximum reverse voltage this device can withstand before breakdown?

The BZX84C7V5S-7-F has a nominal zener voltage of 7.5 V with a guaranteed breakdown range of 7.0 V to 7.9 V at 5 mA test current. It does not specify a distinct "maximum reverse voltage" beyond this range - operation above 7.9 V at sufficient current will sustain zener conduction, but exceeding 200 mW power dissipation risks thermal failure. Absolute maximum reverse voltage is not defined separately from V_Z specification.

Can both Zener elements be used simultaneously with shared cathodes?

No. The two Zener elements in the BZX84C7V5S-7-F are fully isolated: C1/A1 and C2/A2 form independent anode–cathode pairs. Pins 3 and 4 are NC and not internally connected. Sharing cathodes would require external wiring and defeats the purpose of dual-element integration - each element must be biased independently per its respective circuit node.

Is this part suitable for use in automotive applications?

Yes. The BZX84C7V5S-7-F is qualified for operation from –65 °C to +150 °C and is RoHS-compliant with lead-free plating. While not AEC-Q200 certified out-of-box, its temperature range, moisture sensitivity level (MSL 1), and robust construction make it suitable for non-safety-critical automotive subsystems such as cabin sensors, infotainment power rails, and body control modules - subject to customer qualification.

How does the temperature coefficient affect voltage accuracy over temperature?

The BZX84C7V5S-7-F exhibits a positive temperature coefficient of +2.5 to +5.3 mV/°C at 5 mA. Over a 100 °C range (e.g., –25 °C to +75 °C), this introduces up to ±0.53 V drift from nominal 7.5 V - approximately ±7%. For high-accuracy applications, this drift must be compensated via calibration or paired with negative-tempco components; it is acceptable for general-purpose clamping and coarse referencing.