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

Diodes Incorporated BZT52C3V6SQ-7-F

Name: BZT52C3V6SQ-7-F
Brand: Diodes Incorporated
SKU: BZT52C3V6SQ-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZT52C3V6SQ-7-F

Manufacturer:: Diodes Incorporated

Category:: Single Zener Diodes

Package:: SC-76, SOD-323

Datasheet:: BZT52C3V6SQ-7-F.pdf

Description:: DIODE ZENER 3.6V 200MW SOD323

Quantity:: RFQ Add To RFQ list

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Inventory:1,800

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Product details

Overview

BZT52C3V6SQ-7-F from Diodes Incorporated is a surface-mount Zener diode with nominal 3.6 V zener voltage (3.4–3.8 V range at 5 mA), 200 mW power dissipation, and SOD323 package. It provides precise voltage regulation in low-power biasing, reference, and overvoltage protection circuits for automotive and industrial control modules.

For engineers reviewing the BZT52C3V6SQ-7-F datasheet, BZT52C3V6SQ-7-F pinout, BZT52C3V6SQ-7-F application, or BZT52C3V6SQ-7-F equivalent, key selection criteria include zener voltage tolerance (±5.6%), dynamic impedance (90 Ω @ 5 mA), reverse leakage (5 µA @ 1 V), temperature coefficient (−3.5 to 0 mV/°C), and AEC-Q101 qualification for automotive reliability.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or supply conditions. Its planar die construction ensures consistent breakdown characteristics, while the SOD323 package supports high-density PCB layouts and automated assembly.

The device exhibits a negative temperature coefficient between −3.5 and 0 mV/°C, enabling predictable drift compensation in reference designs. With 5 µA maximum reverse current at 1 V and 90 Ω zener impedance at 5 mA test current, it delivers tight regulation for precision analog monitoring and sensor biasing applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	3.6 V nominal, 3.4–3.8 V range at 5 mA - defines regulated output voltage under standard test conditions
Power Dissipation (P_D)	200 mW - maximum continuous power handling on FR-4 board with recommended pad layout
Zener Impedance (Z_ZT)	90 Ω @ 5 mA - indicates voltage stability under small-signal AC variations
Reverse Leakage (I_R)	5 µA @ 1 V - determines minimum quiescent current draw in standby regulation
Temperature Coefficient	−3.5 to 0 mV/°C - quantifies voltage drift over operating temperature range (−65 to +150 °C)
Package	SOD323 - 1.3 mm × 1.7 mm surface-mount outline with cathode band polarity marking
Qualification	AEC-Q101 qualified - validated for automotive-grade reliability and thermal cycling performance

Pinout & Package

Package: SOD323 - ultra-compact plastic-molded case with matte tin-plated alloy 42 leadframe, moisture sensitivity level 1, and UL 94V-0 flammability rating.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal	Connected to lower potential side in reverse-bias regulation configuration
Cathode	Reverse breakdown terminal	Marked by band; connected to higher potential side to enable zener operation

Key Features

Feature	Design Value
Planar die construction	Ensures repeatable breakdown voltage and low parametric variation across production lots
AEC-Q101 qualification	Validates suitability for automotive electronics including body control modules and sensor interfaces
Lead-free & halogen-free	Meets RoHS 2 and JEDEC J-STD-020 compliance for green manufacturing and reflow compatibility
Low weight (0.0049 g)	Minimizes mechanical stress on fine-pitch PCBs and enables high-reliability drop testing

Applications

Automotive Sensor Biasing

Industrial Reference Voltage

Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in engine coolant temperature sensors.

IC Role / Device Role / Timing Role: Zener diode acting as two-terminal shunt voltage reference.

Use Value: Maintains ±5.6% voltage accuracy across −40 to +125 °C ambient, ensuring <0.5% measurement error in analog front-end conditioning.

Use Scenario: Generating fixed reference for 12-bit ADC in programmable logic controller (PLC) analog input modules.

IC Role / Device Role / Timing Role: Passive voltage reference source for ratiometric conversion calibration.

Use Value: Delivers 3.6 V ±0.2 V stability with <90 Ω dynamic impedance, reducing gain drift in precision signal chains.

USB Port Overvoltage Protection

Low-Power Microcontroller Reset Circuit

Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events in automotive infotainment systems.

IC Role / Device Role / Timing Role: Shunt protector limiting voltage to safe level before downstream LDO or USB transceiver.

Use Value: Responds within nanoseconds to 100 V transients, dissipating up to 200 mW without latch-up or degradation.

Use Scenario: Generating clean reset threshold for ARM Cortex-M0+ microcontrollers in battery-powered IoT edge nodes.

IC Role / Device Role / Timing Role: Threshold-setting element in RC-based power-on reset generator.

Use Value: Enables reliable reset assertion at 3.6 V with <5 µA leakage, extending battery life beyond 10 years in sleep mode.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMSZ4685-7-F	Zener voltage 3.6 V (same nominal), but wider tolerance (3.42–3.78 V), higher Z_ZT (150 Ω), no AEC-Q101 qualification	Commercial-grade only; unsuitable for automotive environments requiring extended temperature or reliability validation	Select when cost sensitivity outweighs automotive qualification requirements
BZX384-C3V6	Same 3.6 V nominal, tighter tolerance (3.42–3.78 V), lower Z_ZT (60 Ω), SOD323 package, AEC-Q101 qualified	Superior regulation stability and lower noise; preferred for high-precision references	Choose for improved accuracy-critical applications where 30 Ω lower impedance improves PSRR

Compared with MMSZ4685-7-F and BZX384-C3V6, BZT52C3V6SQ-7-F offers balanced performance: AEC-Q101 qualification like BZX384-C3V6 but at lower cost, and tighter voltage tolerance than MMSZ4685-7-F-making it optimal for mid-tier automotive and industrial designs requiring verified reliability without premium precision.

Availability

BZT52C3V6SQ-7-F is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial reference voltage generation, and USB port overvoltage protection requiring stable component supply and AEC-Q101 compliance.

Supply support for BZT52C3V6SQ-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, specializing in high-reliability components for automotive, industrial, and consumer markets.

The BZT52C series belongs to Diodes' automotive-qualified Zener diode product line, designed specifically for voltage regulation and protection in space-constrained, thermally demanding environments such as engine control units and ADAS sensor modules.

FAQ

What is the maximum reverse voltage (V_R) that BZT52C3V6SQ-7-F can block before breakdown?

The device is rated for 1 V reverse voltage at which leakage current is specified (5 µA max). Breakdown occurs at its nominal zener voltage of 3.6 V, with full regulation established above ~3.4 V. It is not intended for blocking voltages significantly above its zener rating without series current limiting.

Does BZT52C3V6SQ-7-F have a defined forward voltage specification?

Yes - forward voltage is specified as 0.9 V maximum at 10 mA forward current. This value is relevant for ESD protection configurations or bidirectional clamping circuits where forward conduction may occur during transient events.

How does the −3.5 to 0 mV/°C temperature coefficient affect circuit design?

This negative coefficient means output voltage decreases slightly as temperature rises. For applications requiring temperature-stable references, designers must either select a zener near the zero-TC point (e.g., ~5.6 V) or compensate using complementary components like NTC thermistors or op-amp feedback networks.

Is BZT52C3V6SQ-7-F compatible with lead-free reflow soldering profiles?

Yes - it is fully RoHS-compliant with matte tin finish and qualified for standard lead-free reflow profiles (JEDEC J-STD-020 Level 1), supporting peak temperatures up to 260 °C without degradation of electrical or mechanical performance.

BZT52C3V6SQ-7-F Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SC-76, SOD-323

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 3.6 V

Tolerance:: ±5.56%

Power - Max:: 200 mW

Impedance (Max) (Zzt):: 90 Ohms

Current - Reverse Leakage @ Vr:: 5 µA @ 1 V

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

Operating Temperature:: -65°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-323

BZT52C3V6SQ-7-F FAQ

1.How can I place an order for BZT52C3V6SQ-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for BZT52C3V6SQ-7-F 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 BZT52C3V6SQ-7-F reliable?

The price and inventory of BZT52C3V6SQ-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C3V6SQ-7-F is usually 5 days.

3.What payment methods are accepted for BZT52C3V6SQ-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C3V6SQ-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZT52C3V6SQ-7-F?

BZT52C3V6SQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZT52C3V6SQ-7-F 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 BZT52C3V6SQ-7-F?

For technical support, including BZT52C3V6SQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C3V6SQ-7-F requirements.

6.How does Aetrix verify that BZT52C3V6SQ-7-F is sourced from the original manufacturer or authorized distributors?

All BZT52C3V6SQ-7-F 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 BZT52C3V6SQ-7-F meets industry standards.

7.What is the process for return or replacement of BZT52C3V6SQ-7-F?

All BZT52C3V6SQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C3V6SQ-7-F, 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 BZT52C3V6SQ-7-F part is unused and in its original packaging.

Return procedure for BZT52C3V6SQ-7-F:

1.Submit a request within 90 days.

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

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