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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Diodes Incorporated BZT52C3V0LP-7

Name: BZT52C3V0LP-7
Brand: Diodes Incorporated
SKU: BZT52C3V0LP-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZT52C3V0LP-7

Manufacturer:: Diodes Incorporated

Category:: Single Zener Diodes

Package:: 0402 (1006 Metric)

Datasheet:: BZT52C3V0LP-7.pdf

Description:: DIODE ZENER 3V 250MW 2DFN

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Product details

Overview

BZT52C3V0LP-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 3.0 V (2.8–3.2 V range), 5 mA test current, 95 Ω maximum zener impedance at I_ZT, and 250 mW power dissipation in DFN1006-2 package. It provides precise low-voltage regulation and overvoltage clamping in space-constrained power rails and I/O protection circuits.

For engineers reviewing the BZT52C3V0LP-7 datasheet, BZT52C3V0LP-7 pinout, BZT52C3V0LP-7 application, or BZT52C3V0LP-7 equivalent, key selection criteria include zener voltage tolerance (±6.7%), cathode-marked DFN1006-2 footprint compatibility, thermal resistance (500 °C/W), AEC-Q101 qualification, and reverse leakage (≤10 µA at 1.0 V).

Technical Context

This device operates as a two-terminal voltage reference and transient suppressor, leveraging silicon PN junction breakdown at precisely controlled 3.0 V. Its low dynamic impedance (95 Ω @ 5 mA) ensures stable regulation under varying load currents, while its 1.0 V maximum reverse current threshold enables reliable low-voltage clamping before logic-level thresholds are exceeded.

The DFN1006-2 package supports high-density PCB layouts and automated reflow assembly, with NiPdAu-plated terminals ensuring solderability per MIL-STD-202 Method 208. Thermal performance is defined for FR-4 boards with minimum pad layout, yielding R_θJA = 500 °C/W at 25 °C ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	3.0 V nominal, 2.8–3.2 V range @ 5 mA - defines clamping level for 3.3 V rail protection
Power Dissipation (P_D)	250 mW @ T_A = 25 °C - limits continuous surge energy handling in compact layouts
Zener Impedance (Z_ZT)	95 Ω max @ I_ZT = 5 mA - ensures <±50 mV regulation shift across load current changes
Reverse Leakage (I_R)	≤10 µA @ V_R = 1.0 V - guarantees minimal standby current in always-on sensing nodes
Thermal Resistance (R_θJA)	500 °C/W - requires derating above 25 °C ambient; full power only viable with minimal copper area
Operating Temperature	−65 to +150 °C - supports automotive under-hood and industrial control environments
AEC-Q101 Qualified	Yes - validated for high-reliability automotive electronics per stress test requirements

Pinout & Package

Package: DFN1006-2 (1.00 × 0.60 × 0.50 mm), ultra-small leadless surface-mount case with molded green compound (UL 94V-0), moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / cathode-referenced input	Connected to lower-potential node during regulation; unmarked side of package
Cathode	Zener breakdown terminal / voltage reference output	Marked with dot on top surface; connected to regulated rail or clamp point

Key Features

Feature	Design Value
AEC-Q101 qualified reliability	Validated for automotive-grade temperature cycling, HTRB, and ESD robustness per JEDEC standards
DFN1006-2 footprint	0.6 mm width enables placement in ≤0.8 mm pitch routing zones on dense MCU carrier boards
Low 3.0 V zener voltage	Enables direct clamping of 3.3 V logic I/O without series resistor overhead or voltage translation
RoHS-compliant & "Green"	No purposefully added lead; halogen-free molding compound meets IEC 61249-2-21 requirements
10 µA max reverse leakage @ 1 V	Minimizes quiescent current draw in battery-backed real-time clock and sensor bias networks

Applications

USB Interface Protection

Automotive Sensor Biasing

Use Scenario: Clamping D+ and D− lines against ESD transients in USB 2.0 peripheral ports.

IC Role / Device Role / Timing Role: Low-capacitance shunt regulator absorbing ±8 kV contact discharge per IEC 61000-4-2.

Use Value: Prevents latch-up in USB transceivers by limiting line voltage to ≤3.2 V during surge events.

Use Scenario: Providing stable 3.0 V reference for analog output of pressure/temperature sensors in engine control units.

IC Role / Device Role / Timing Role: Precision voltage reference source with <±0.2 V drift over −40 to +125 °C.

Use Value: Enables ratiometric ADC conversion without external reference IC, reducing BOM count.

IoT Node Power Rail Clamp

Industrial PLC Input Conditioning

Use Scenario: Protecting 3.3 V supply inputs of BLE/Wi-Fi SoCs from inductive switching spikes on shared PCB rails.

IC Role / Device Role / Timing Role: Fast-response overvoltage limiter activated within nanoseconds of transient onset.

Use Value: Eliminates need for TVS diodes with higher clamping voltage, preserving 3.3 V logic margin.

Use Scenario: Level-shifting and noise filtering for 24 V DC digital inputs routed to 3.3 V microcontroller GPIOs.

IC Role / Device Role / Timing Role: Passive voltage divider stabilizer with integrated zener reference and current limiting.

Use Value: Reduces external resistor count by using zener knee voltage as fixed drop in resistive divider.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBZ5223BLT1G	Zener voltage 3.0 V (2.85–3.15 V), SOT-23 package, 350 mW P_D, 17 Ω Z_ZT	Larger footprint; higher power but less suitable for ultra-dense layouts	Select when higher surge energy handling or lower dynamic impedance is required
BZX384-C3V0	Zener voltage 3.0 V (2.8–3.2 V), SOD-323 package, 300 mW P_D, 90 Ω Z_ZT	Slightly larger body (1.7 × 1.3 mm); same thermal resistance but different pad geometry	Choose when legacy SOD-323 land pattern reuse is prioritized over minimal size

Compared with MMBZ5223BLT1G and BZX384-C3V0, BZT52C3V0LP-7 offers the smallest footprint (1.0 × 0.6 mm), AEC-Q101 qualification, and optimized thermal performance for high-density automotive PCBs-making it preferred where board space and reliability are co-constrained.

Availability

BZT52C3V0LP-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor modules, and IoT edge devices requiring stable component supply with AEC-Q101 compliance and DFN miniaturization.

Supply support for BZT52C3V0LP-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, specializing in high-reliability, energy-efficient components for automotive, industrial, and consumer markets.

The BZT52CxxLP series belongs to Diodes' AEC-Q101-qualified Zener diode portfolio, designed specifically for precision voltage regulation and ESD protection in space-limited automotive and industrial control applications.

FAQ

What is the cathode identification method for BZT52C3V0LP-7?

The cathode is marked with a visible dot on the top surface of the DFN1006-2 package. This dot aligns with the cathode terminal in the mechanical drawing and must be oriented toward the higher-potential node during circuit layout. The unmarked side is the anode, and polarity reversal will prevent proper zener operation.

Can BZT52C3V0LP-7 replace a 3.3 V Zener in a 3.3 V rail clamp?

No-it is not a drop-in replacement for 3.3 V designs. With a nominal 3.0 V zener voltage (2.8–3.2 V range), it clamps below the 3.3 V rail's typical noise margin and may cause unintended conduction during normal operation. Use BZT52C3V3LP-7 for 3.3 V applications.

Is BZT52C3V0LP-7 suitable for bidirectional ESD protection?

No-it is a unidirectional Zener diode. For bidirectional ESD protection (e.g., USB data lines), a dedicated bidirectional TVS like D3V3F1U2S-7 or SMAJ3.3A is required. BZT52C3V0LP-7 conducts only in reverse breakdown and forward-biases like a standard diode in forward direction.

How does the 500 °C/W thermal resistance affect PCB layout?

At 250 mW dissipation, junction-to-ambient rise reaches 125 °C-exceeding safe operating limits unless ambient is ≤25 °C. Layout must use minimum recommended copper pads (per datasheet page 4) and avoid enclosed areas. Derating to 125 mW is advised above 75 °C ambient to maintain T_J < 150 °C.

BZT52C3V0LP-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 0402 (1006 Metric)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 3 V

Tolerance:: ±7%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 95 Ohms

Current - Reverse Leakage @ Vr:: 10 µA @ 1 V

Voltage - Forward (Vf) (Max) @ If:: 900 mV @ 10 mA

Operating Temperature:: -65°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: X1-DFN1006-2

BZT52C3V0LP-7 FAQ

1.How can I place an order for BZT52C3V0LP-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZT52C3V0LP-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BZT52C3V0LP-7 reliable?

The price and inventory of BZT52C3V0LP-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C3V0LP-7 is usually 5 days.

3.What payment methods are accepted for BZT52C3V0LP-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C3V0LP-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZT52C3V0LP-7?

BZT52C3V0LP-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZT52C3V0LP-7 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BZT52C3V0LP-7?

For technical support, including BZT52C3V0LP-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C3V0LP-7 requirements.

6.How does Aetrix verify that BZT52C3V0LP-7 is sourced from the original manufacturer or authorized distributors?

All BZT52C3V0LP-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BZT52C3V0LP-7 meets industry standards.

7.What is the process for return or replacement of BZT52C3V0LP-7?

All BZT52C3V0LP-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C3V0LP-7, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BZT52C3V0LP-7 part is unused and in its original packaging.

Return procedure for BZT52C3V0LP-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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