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Diodes Incorporated BZT52C24S-7
- Part No.:
- BZT52C24S-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZT52C24S-7.pdf
- Description:
- DIODE ZENER 24V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,566
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Product details
Overview
BZT52C24S-7 from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 24 V, ±5% tolerance (22.8–25.6 V at 5 mA), 200 mW power dissipation, and SOD323 package. It provides precise voltage regulation in low-power biasing, overvoltage protection, and reference circuits for industrial sensors and automotive ECUs.
For engineers reviewing the BZT52C24S-7 datasheet, BZT52C24S-7 pinout, BZT52C24S-7 application, or BZT52C24S-7 equivalent, key selection criteria include zener voltage accuracy at IZT = 5 mA, dynamic impedance (70 Ω @ 5 mA / 250 Ω @ 1 mA), temperature coefficient (+16.8 mV/°C), reverse leakage (<0.1 µA @ 18.4 V), and AEC-Q101 qualification for automotive use.
Technical Context
This Zener diode operates in reverse breakdown 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 reflow assembly.
The device exhibits a positive temperature coefficient of +16.8 mV/°C above 6 V, enabling predictable thermal drift in voltage references. With a maximum reverse current of 0.1 µA at 18.4 V and zener impedance of 70 Ω at 5 mA, it delivers tight regulation in low-current precision applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V nominal, 22.8–25.6 V range at 5 mA - defines regulated output voltage under standard test conditions |
| Power Dissipation (PD) | 200 mW - maximum continuous power handling on FR-4 board with recommended pad layout |
| Zener Impedance (ZZT) | 70 Ω @ 5 mA - low dynamic resistance enables stable regulation under small-signal load variations |
| Reverse Leakage (IR) | <0.1 µA @ 18.4 V - ensures minimal quiescent current in standby or high-impedance bias networks |
| Temperature Coefficient | +16.8 mV/°C - quantifies voltage drift per degree Celsius above 6 V, critical for temperature-stable references |
| 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 including temperature cycling and humidity testing |
Pinout & Package
The BZT52C24S-7 uses the SOD323 plastic package with two terminals: anode and cathode, marked by a visible cathode band on the top surface. The device is unidirectional and intended for reverse-bias operation only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node in zener regulator configuration | Connected to circuit common or lower-potential rail; forms return path for zener current |
| Cathode | Regulated output node | Provides stable 24 V reference when reverse-biased; must be held at higher potential than anode |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable zener voltage distribution and low parameter spread across production lots |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics requiring extended temperature and lifetime reliability |
| Lead-free and halogen-free | Complies with RoHS 2 and JEDEC J-STD-020 Level 1 moisture sensitivity for robust reflow compatibility |
| Small SOD323 footprint | Enables placement in space-constrained locations such as sensor modules and ECU input conditioning stages |
Applications
| Industrial Sensor Biasing | Automotive ECU Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to bridge-based pressure or temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Zener diode operating as a shunt voltage reference in a passive bias network. Use Value: Maintains 24 V ±5% regulation despite ±15% supply variation, ensuring sensor output linearity and ADC accuracy. | Use Scenario: Generating a local 24 V reference for microcontroller analog peripherals in engine control units. IC Role / Device Role / Timing Role: Shunt regulator supplying clean reference to ADC and comparator inputs. Use Value: Low 0.1 µA leakage minimizes loading on upstream LDOs; AEC-Q101 rating ensures operation across –40°C to +125°C ambient. |
| Overvoltage Clamp Protection | Low-Power Voltage Monitor |
Use Scenario: Clamping transient surges on 24 V CAN bus power rails in vehicle infotainment head units. IC Role / Device Role / Timing Role: Passive overvoltage protection element placed between supply and ground. Use Value: Activates at 24 V to divert surge energy before downstream DC-DC converters reach absolute maximum ratings. | Use Scenario: Detecting undervoltage conditions in battery-powered IoT gateways using comparator threshold referencing. IC Role / Device Role / Timing Role: Precision voltage reference feeding non-inverting input of rail-to-rail comparator. Use Value: Tight 22.8–25.6 V tolerance enables accurate 24 V brown-out detection without calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5249BS-7-F | Zener voltage 24 V, but ±10% tolerance (21.6–26.4 V); 300 mW PD; same SOD323 package | Higher power margin but looser voltage tolerance; not AEC-Q101 qualified | Select when cost-sensitive industrial designs prioritize power headroom over voltage precision |
| BZX84-C24 | Zener voltage 24 V, ±5% tolerance; 300 mW PD; SOT-23 package (larger footprint) | Higher power rating and identical voltage spec, but incompatible SOT-23 footprint requires PCB redesign | Select when existing SOT-23 layout exists and thermal derating to 200 mW is acceptable |
Compared with MMBZ5249BS-7-F and BZX84-C24, the BZT52C24S-7 offers tighter voltage tolerance and automotive qualification in the smallest footprint-making it optimal for space- and reliability-critical 24 V reference and clamp functions.
Availability
BZT52C24S-7 is available at Aetrix Electronics and suitable for industrial sensor biasing, automotive ECU reference generation, and overvoltage clamp protection requiring stable component supply and long-term lifecycle support.
Supply support for BZT52C24S-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, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The BZT52C series belongs to Diodes' high-reliability Zener diode product line, engineered specifically for precision voltage regulation and protection in automotive, industrial, and computing applications where stability, small size, and qualification compliance are essential.
FAQ
What is the maximum reverse voltage (VR) that BZT52C24S-7 can withstand before breakdown?
The BZT52C24S-7 begins controlled reverse breakdown at its nominal zener voltage of 24 V, with a guaranteed range of 22.8 V to 25.6 V at 5 mA test current. It is not rated for sustained operation above 25.6 V in breakdown; exceeding this may cause thermal runaway if power dissipation exceeds 200 mW.
Does BZT52C24S-7 support reflow soldering per JEDEC J-STD-020?
Yes - the device is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it can be subjected to unlimited floor life and standard lead-free reflow profiles (peak 260°C) without baking. Its matte tin finish and alloy 42 leadframe ensure reliable solder wetting and intermetallic formation.
How does the +16.8 mV/°C temperature coefficient affect circuit performance?
This coefficient means the zener voltage increases by approximately 16.8 mV for each 1°C rise in junction temperature. In a 24 V reference, a 50°C rise yields ~0.84 V increase - requiring thermal design consideration in enclosed or high-power environments to maintain regulation accuracy.
Is BZT52C24S-7 suitable for bidirectional ESD protection?
No - it is a unidirectional Zener diode optimized for reverse-bias regulation. For bidirectional ESD protection, purpose-built TVS diodes such as the D24Z2 or PESD5V0S1BA are required; those devices offer symmetric clamping and specified IEC 61000-4-2 ratings.
BZT52C24S-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±6%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 16.8 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
BZT52C24S-7 FAQ
1.How can I place an order for BZT52C24S-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C24S-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 BZT52C24S-7 reliable?
The price and inventory of BZT52C24S-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C24S-7 is usually 5 days.
3.What payment methods are accepted for BZT52C24S-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C24S-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C24S-7?
BZT52C24S-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C24S-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 BZT52C24S-7?
For technical support, including BZT52C24S-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C24S-7 requirements.
6.How does Aetrix verify that BZT52C24S-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C24S-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 BZT52C24S-7 meets industry standards.
7.What is the process for return or replacement of BZT52C24S-7?
All BZT52C24S-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C24S-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 BZT52C24S-7 part is unused and in its original packaging.
Return procedure for BZT52C24S-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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