Diodes Incorporated GDZ8V2BLP3-7

Overview

GDZ8V2BLP3-7 from Diodes Incorporated is an ultra-small leadless Zener diode with nominal zener voltage 8.2 V, ±2.5% tolerance (7.995–8.405 V), 250 mW power rating at 25°C, 0.5 μA max reverse leakage at 5.0 V, and housed in X3-DFN0603-2 package (0.6 × 0.3 × 0.3 mm). It serves as precision voltage reference and overvoltage clamp in space-constrained portable electronics.

For engineers reviewing the GDZ8V2BLP3-7 datasheet, GDZ8V2BLP3-7 pinout, GDZ8V2BLP3-7 application, or GDZ8V2BLP3-7 equivalent, key selection factors include its AEC-Q101 qualification, ultra-low profile for thin-profile PCBs, cathode-bar polarity marking, RoHS/halogen-free compliance, and thermal derating behavior above 25°C ambient.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage regulation under controlled current (IZT = 5 mA). Its low 0.5 μA IR at VR = 5.0 V enables minimal standby power loss-critical for battery-powered systems. The device uses a silicon junction optimized for tight VZ tolerance and low temperature coefficient.

Thermal performance is defined by RθJA = 500°C/W on FR-4 with minimum pad layout, requiring careful PCB copper area design for power handling. It supports operation from –55°C to +150°C, meeting automotive-grade reliability requirements per AEC-Q101.

Key Specifications

Pinout & Package

Package: X3-DFN0603-2 - ultra-compact, leadless, dual-terminal surface-mount package with exposed copper thermal pad (not electrically connected), matte tin-plated copper leadframe, and cathode bar marking on top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B8V2,215 and MMSZ4687T1G, GDZ8V2BLP3-7 delivers the smallest form factor and tightest tolerance in its class-making it optimal for next-generation miniaturized, battery-critical, and automotive-qualified applications where board area and thermal envelope are constrained.

Availability

GDZ8V2BLP3-7 is available at Aetrix Electronics and suitable for USB interface protection, automotive cabin sensor references, wireless earbud battery monitoring, and industrial PLC input conditioning requiring stable component supply across high-mix, low-volume production runs.

Supply support for GDZ8V2BLP3-7 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, serving automotive, industrial, computing, and consumer markets with high-reliability components.

The GDZ series targets space- and power-constrained voltage regulation needs, emphasizing ultra-miniature packaging, AEC-Q101 qualification, and green material compliance for modern portable and automotive electronics.

FAQ

What is the maximum allowable DC current for continuous operation at 85°C ambient?

At TA = 85°C, the power derating curve (Fig. 1) shows ~150 mW maximum dissipation. With VZ ≈ 8.2 V, the safe continuous DC current is ≤18.3 mA (150 mW ÷ 8.2 V). Exceeding this risks thermal runaway due to the 500°C/W junction-to-ambient resistance on standard FR-4.

How is cathode polarity identified on the GDZ8V2BLP3-7 package?

The cathode is marked by a visible bar on the top surface of the X3-DFN0603-2 package, aligned with one of the two terminals. In top-view orientation, the bar is adjacent to the cathode terminal; bottom-view inspection confirms the same terminal connects to the larger internal metal pad used for thermal conduction.

Does GDZ8V2BLP3-7 support reflow soldering per JEDEC J-STD-020?

Yes - the device is rated Moisture Sensitivity Level 1 (MSL-1), meaning it may be stored indefinitely at ≤30°C/85% RH and subjected to unlimited floor life. Standard Pb-free reflow profiles (peak 260°C, 20–40 sec above 217°C) are fully supported without baking or special handling.

Can GDZ8V2BLP3-7 replace a 1N4738A in existing designs?

No - the 1N4738A is a through-hole 8.2 V, 1 W Zener in DO-41 package. GDZ8V2BLP3-7 has only 250 mW rating and ultra-miniature DFN footprint. Direct replacement would require PCB redesign, thermal analysis, and verification of leakage/current limits; it is suited for new ultra-compact designs, not legacy retrofits.