Diodes Incorporated BZT52C7V5TQ-7-F

Overview

BZT52C7V5TQ-7-F from Diodes Incorporated is a surface-mount Zener diode with nominal 7.5 V zener voltage, 5 mA test current, 15 Ω dynamic impedance at 1 kHz, 1.0 µA maximum reverse leakage at 5.0 V, and ±5% voltage tolerance. It operates from –55 °C to +150 °C and delivers stable voltage regulation in low-power biasing and reference circuits for automotive sensor interfaces.

For engineers reviewing the BZT52C7V5TQ-7-F datasheet, BZT52C7V5TQ-7-F pinout, BZT52C7V5TQ-7-F application, or BZT52C7V5TQ-7-F equivalent, this part serves as a precision 7.5 V shunt regulator in space-constrained PCBs where thermal stability, AEC-Q200 readiness, and SOD523 footprint compatibility are critical selection criteria.

Technical Context

This Zener diode functions as a two-terminal shunt voltage regulator, maintaining a stable 7.5 V reference across its anode–cathode terminals under reverse-biased operation. Its 15 Ω zener impedance at 5 mA ensures minimal output voltage variation with load current changes, while the –55 °C to +150 °C operating range supports under-hood automotive environments.

The device uses a planar epitaxial construction in a molded plastic SOD523 package with matte tin–annealed alloy 42 leads. Its flat-lead design enables low-profile mounting and high power dissipation per unit area (300 mW), with thermal resistance of 417 °C/W junction-to-ambient on FR-4 board.

Key Specifications

Pinout & Package

Package: SOD523 - ultra-compact surface-mount plastic package with cathode band marking; dimensions: 1.25 mm (E) × 0.85 mm (D) × 0.65 mm (He); weight ≈ 0.001 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5236BS-7-F and BZX84-C7V5-7-F, BZT52C7V5TQ-7-F offers superior thermal performance in ultra-compact layouts and guaranteed automotive qualification-making it optimal for next-generation ECU and ADAS sensor nodes requiring both miniaturization and AEC-Q200 compliance.

Availability

BZT52C7V5TQ-7-F is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, USB-C port controllers, and LED driver circuits requiring stable component supply with traceable sourcing and long-term lifecycle support.

Supply support for BZT52C7V5TQ-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 the Americas.

This part belongs to the BZT52C series of precision Zener diodes engineered specifically for automotive and industrial applications demanding tight voltage tolerance, extended temperature operation, and green packaging compliance.

FAQ

What is the maximum reverse voltage (V_R) before breakdown for BZT52C7V5TQ-7-F?

The device exhibits sharp reverse breakdown at 7.5 V nominal, with guaranteed regulation between 7.0 V and 7.9 V at 5 mA test current. Below 5.0 V reverse bias, leakage remains ≤1.0 µA - meaning no significant conduction occurs until near the specified zener voltage. This threshold behavior is confirmed by Figure 2 and Table 1 in DS30502 Rev. 18-2.

Is BZT52C7V5TQ-7-F qualified for automotive use per AEC-Q200?

Yes - the "Q" suffix denotes automotive qualification. Diodes Incorporated manufactures this part in IATF 16949 certified facilities, with PPAP capability and full AEC-Q200 compliance for passive components. The datasheet explicitly states eligibility for automotive applications requiring change control and high-reliability standards.

Can BZT52C7V5TQ-7-F replace BZT52C7V5-7-F in existing designs?

Yes - the Q-suffix variant shares identical electrical characteristics, SOD523 package, and marking code "WC", differing only in automotive qualification and traceability documentation. No layout or schematic changes are required; the Q version adds PPAP support and enhanced lot-level traceability for OEM programs.

What is the thermal resistance (R_θJA) when mounted on a standard FR-4 PCB?

Per Note 6 in the datasheet, R_θJA is 417 °C/W when mounted on a single-sided FR-4 board with 2 oz copper and a 1.92 mm² pad area. This value assumes natural convection cooling and defines the maximum ambient temperature rise per watt of dissipated power in typical layout conditions.