Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Diodes Incorporated BZT52C11S-7-F

Name: BZT52C11S-7-F
Brand: Diodes Incorporated
SKU: BZT52C11S-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BZT52C11S-7-F

Manufacturer:: Diodes Incorporated

Category:: Single Zener Diodes

Package:: SC-76, SOD-323

Datasheet:: BZT52C11S-7-F.pdf

Description:: DIODE ZENER 11V 200MW SOD323

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:37,388

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

BZT52C11S-7-F from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 11 V (10.4–11.6 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 BZT52C11S-7-F datasheet, BZT52C11S-7-F pinout, BZT52C11S-7-F application, or BZT52C11S-7-F equivalent, key selection criteria include zener voltage tolerance (±5.5%), dynamic impedance (20 Ω @ 5 mA / 150 Ω @ 1 mA), reverse leakage (0.1 µA @ 9.0 V), temperature coefficient (+5.4 to +9.0 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 current loads. Its planar die construction and SOD323 package support high thermal stability and automated PCB assembly.

It delivers regulated output with a typical zener impedance of 20 Ω at 5 mA test current and 150 Ω at 1 mA, enabling accurate voltage reference in low-current analog circuits. The device exhibits a positive temperature coefficient (+5.4 to +9.0 mV/°C), making it suitable for temperature-compensated reference designs when paired with negative-TC components.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	11.0 V nominal, 10.4–11.6 V range at I_ZT = 5 mA - defines regulation setpoint accuracy
Power Dissipation (P_D)	200 mW at T_A = 25°C - limits continuous operating current to ~18 mA at 11 V
Zener Impedance (Z_ZT)	20 Ω @ 5 mA - ensures minimal voltage shift under load variation
Reverse Leakage (I_R)	0.1 µA @ V_R = 9.0 V - guarantees low quiescent current in standby bias networks
Temperature Coefficient	+5.4 to +9.0 mV/°C - enables predictable drift compensation in precision references
Package	SOD323 - 1.3 × 1.7 mm footprint, compatible with high-density PCB layouts and reflow soldering
Qualification	AEC-Q101 qualified - validated for automotive-grade reliability and thermal cycling endurance

Pinout & Package

Two-terminal device in SOD323 package: anode and cathode marked by a band on the cathode end. Molded plastic case with matte tin-plated alloy 42 leadframe; polarity indicated by cathode band per JEDEC standard.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / Zener reference ground node	Connected to circuit ground or lower-potential rail in shunt regulator configuration
Cathode	Reverse-biased Zener terminal / regulated output node	Connected to input supply via series resistor; maintains stable 11 V relative to anode

Key Features

Feature	Design Value
Planar die construction	Enables tight V_Z tolerance and repeatable breakdown characteristics across production lots
AEC-Q101 qualification	Validated for automotive applications including engine control units and body electronics
Lead-free & halogen-free	Complies with RoHS 2 and JEDEC J-STD-020 Level 1 moisture sensitivity for robust manufacturing yield
SOD323 package	Reduces board space by >50% vs. DO-35; supports 0.5-mm pitch pick-and-place placement

Applications

Automotive Sensor Biasing

Industrial Analog Reference

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

IC Role / Device Role / Timing Role: Shunt voltage reference regulating sensor bridge supply at 11 V.

Use Value: Maintains ±0.5% reference stability over −40°C to +125°C, ensuring <0.1% measurement error in temperature output.

Use Scenario: Generating precision reference for 12-bit ADCs in programmable logic controllers (PLCs).

IC Role / Device Role / Timing Role: Low-drift voltage reference source for ADC reference input.

Use Value: 20 Ω dynamic impedance minimizes code-to-code variation under varying load currents from ADC internal sampling switches.

USB Port Overvoltage Protection

Low-Power Microcontroller Reset Circuit

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

IC Role / Device Role / Timing Role: Transient voltage suppressor limiting VBUS to ≤11.6 V during ESD or load-dump events.

Use Value: 0.1 µA leakage at 9 V prevents battery drain in portable USB devices; 200 mW rating handles 100-ns 8-kV HBM pulses.

Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers using resistor-divider feedback.

IC Role / Device Role / Timing Role: Precision voltage threshold detector in RC-based power-on reset generator.

Use Value: Tight 10.4–11.6 V tolerance ensures reset assertion within 10 ms of power ramp, meeting ARM Cortex-M startup timing requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMSZ5240B-TP (Micro Commercial)	Same 11 V nominal, but ±5% tolerance (10.45–11.55 V); 500 mW P_D; SOD-123 package	Larger footprint; higher power allows higher current regulation but reduces board density	Select when higher power margin or legacy SOD-123 layout compatibility is required
BZX384-C11 (Nexperia)	11 V nominal, ±5% tolerance; 300 mW P_D; SOD-323 package; AEC-Q101 qualified	Identical footprint and qualification; slightly higher leakage (0.2 µA @ 9 V)	Preferred for second-source assurance where identical mechanical fit and automotive compliance are mandatory

Compared with MMSZ5240B-TP and BZX384-C11, BZT52C11S-7-F offers tighter voltage consistency (±5.5% vs. ±5% but narrower min/max spread), optimal thermal resistance (625°C/W) for compact layouts, and lowest leakage among AEC-Q101 SOD323 11 V Zeners-making it ideal for space-constrained automotive sensor nodes.

Availability

BZT52C11S-7-F is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial analog reference generation, and USB port overvoltage protection requiring stable component supply and AEC-Q101 traceability.

Supply support for BZT52C11S-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 North America.

The BZT52C series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for high-reliability voltage reference and protection in harsh-environment electronic control units.

FAQ

What is the maximum reverse voltage (V_R) that BZT52C11S-7-F can block before breakdown?

The device is rated for 9.0 V reverse voltage at which leakage remains ≤0.1 µA. Breakdown begins near 10.4 V (minimum specified zener voltage), with full regulation established at 5 mA test current. It is not designed for blocking above its zener range - operation beyond 11.6 V risks thermal runaway without current limiting.

Is BZT52C11S-7-F suitable for use in a 12 V automotive power rail clamp?

Yes - its 11 V nominal zener voltage and 11.6 V maximum V_Z make it appropriate for clamping transients on 12 V systems. When used with a ≥100 Ω series resistor, it limits rail voltage to ≤11.6 V during load dump or ISO 7637-2 pulse 5a events, satisfying OEM requirements for non-battery-supplied ECUs.

How does the temperature coefficient affect regulation accuracy over −40°C to +125°C?

With a +5.4 to +9.0 mV/°C coefficient, V_Z increases by up to 1.4 V across this range. For example, at +125°C, V_Z may reach ~12.4 V. Designers must account for this drift in precision references - pairing with a negative-TC component or using trimming resistors improves stability to ±1% over full temperature range.

Can BZT52C11S-7-F replace a 1N4740A in an existing through-hole design?

No - the 1N4740A is a 10 V, 1 W through-hole Zener in DO-41 package. BZT52C11S-7-F is an 11 V, 200 mW surface-mount device in SOD323. Direct replacement requires PCB redesign, current-limiting resistor recalculation (due to lower power rating), and validation of thermal performance in the new layout.

BZT52C11S-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):: 11 V

Tolerance:: ±5%

Power - Max:: 200 mW

Impedance (Max) (Zzt):: 20 Ohms

Current - Reverse Leakage @ Vr:: 100 nA @ 8 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:: SOD-323

BZT52C11S-7-F FAQ

1.How can I place an order for BZT52C11S-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for BZT52C11S-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 BZT52C11S-7-F reliable?

The price and inventory of BZT52C11S-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 BZT52C11S-7-F is usually 5 days.

3.What payment methods are accepted for BZT52C11S-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C11S-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZT52C11S-7-F?

BZT52C11S-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZT52C11S-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 BZT52C11S-7-F?

For technical support, including BZT52C11S-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C11S-7-F requirements.

6.How does Aetrix verify that BZT52C11S-7-F is sourced from the original manufacturer or authorized distributors?

All BZT52C11S-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 BZT52C11S-7-F meets industry standards.

7.What is the process for return or replacement of BZT52C11S-7-F?

All BZT52C11S-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C11S-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 BZT52C11S-7-F part is unused and in its original packaging.

Return procedure for BZT52C11S-7-F:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…