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Diodes Incorporated BZT52C24T-7
- Part No.:
- BZT52C24T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT52C24T-7.pdf
- Description:
- DIODE ZENER 24V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:2,180
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Product details
Overview
BZT52C24T-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), 300 mW power dissipation, 70 Ω maximum zener impedance at 5 mA, and 0.1 µA maximum reverse leakage current at 18.4 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning and power rail stabilization circuits.
For engineers reviewing the BZT52C24T-7 datasheet, BZT52C24T-7 pinout, BZT52C24T-7 application, or BZT52C24T-7 equivalent, this part is selected for stable 24 V regulation in space-constrained PCBs where thermal resistance (RθJA = 417 °C/W) and JEDEC-qualified reliability matter - especially in industrial sensor interfaces and automotive body electronics requiring AEC-Q200-compatible variants.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified test current of 5 mA and exhibits a positive temperature coefficient of +16.8 mV/°C, enabling predictable drift compensation in voltage-reference designs. Its SOD523 package supports high-density layouts while maintaining adequate thermal performance on standard FR-4 boards.
The device meets JEDEC reliability standards and is fully RoHS-compliant, halogen-free, and antimony-free ("Green" per Diodes Inc. definition). It is not qualified to AEC-Q200 by default but shares identical construction with Q-suffix automotive-grade variants available under the same product family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V nominal, 22.8–25.6 V range at 5 mA - defines clamping threshold for 24 V rail protection or reference generation. |
| Power Dissipation (PD) | 300 mW - limits continuous dissipation without heatsinking on standard 2 oz copper FR-4. |
| Zener Impedance (ZZT) | 70 Ω max at 5 mA - indicates regulation stiffness; lower values improve load regulation in feedback loops. |
| Reverse Leakage (IR) | 0.1 µA max at 18.4 V - ensures minimal quiescent current in standby-mode voltage monitors. |
| Thermal Resistance (RθJA) | 417 °C/W - determines junction temperature rise above ambient; critical for derating above 25°C. |
| Package | SOD523 - 1.25 mm × 0.85 mm footprint with cathode band marking; enables <0.5 mm pitch routing. |
Pinout & Package
Two-terminal device in SOD523 package: anode and cathode marked by a visible cathode band on the top surface. No internal bonding wires or multi-pin configuration - terminals are co-planar, matte tin-plated alloy 42 leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit ground or lower-potential node when used in shunt regulation. |
| Cathode | Reverse-bias input / Zener output node | Connected to regulated voltage node; carries full zener current during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD523 package | Height ≤ 0.65 mm - fits under low-clearance shields and enables double-sided assembly. |
| JEDEC-qualified reliability | Qualified to AEC-Q stress levels per Diodes Inc. definitions - supports long-term field deployment in non-automotive industrial use. |
| Halogen- and antimony-free "Green" compound | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - satisfies strict environmental compliance for export markets. |
| Matte tin annealed terminations | Solderable per MIL-STD-202 Method 208 - ensures robust reflow joint integrity with lead-free SAC305 paste. |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Monitoring |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 24 V industrial current-loop transmitters (4–20 mA) operating in -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 24 V bias to op-amp input stages and ADC references. Use Value: Tight 5% VZ tolerance and low 0.1 µA leakage ensure <0.1% full-scale error contribution across temperature. |
Use Scenario: Overvoltage clamp on VBUS monitoring line in USB-C PD sink applications with 20 V max input. IC Role / Device Role / Timing Role: Transient suppressor protecting downstream ADC input from >24 V fault events. Use Value: 70 Ω zener impedance ensures rapid clamping response (<100 ns) without oscillation into 10 kΩ sense divider. |
| Automotive Body Control Module (BCM) | IoT Node Battery Protection |
|
Use Scenario: Voltage supervisor for LIN bus transceiver supply in BCM sub-modules exposed to load-dump transients. IC Role / Device Role / Timing Role: Standby-mode clamp limiting rail voltage to 25.6 V during ISO 7637-2 Pulse 5a events. Use Value: 300 mW rating sustains 100 ms pulses at 24 V without thermal runaway; SOD523 footprint saves board area vs. DO-35. |
Use Scenario: Low-quiescent protection for Li-ion battery voltage monitor ICs in coin-cell-powered sensors. IC Role / Device Role / Timing Role: Reverse-biased reference element setting undervoltage lockout threshold at 22.8 V. Use Value: 0.1 µA leakage at 18.4 V adds <1 nA error to 100 nA sleep-current budgets - negligible impact on 10-year battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245BS-7-F (Diodes Inc.) | Same 24 V nominal, SOT-323 package (larger footprint, RθJA = 300 °C/W), 100 mW PD | Lower power handling; unsuitable for sustained 5 mA operation above 50°C ambient | Select only if board layout allows SOT-323 and thermal budget permits lower dissipation. |
| BZX84-C24 (Nexperia) | 24 V nominal, SOT-23 package, 350 mW PD, 80 Ω ZZT, 0.1 µA IR at 18 V | Higher power rating but larger 2.9 mm × 1.3 mm footprint and 10× higher capacitance (~15 pF vs. ~2 pF) | Prefer for higher-power clamping where layout space permits and RF sensitivity is not critical. |
Compared with MMBZ5245BS-7-F and BZX84-C24, BZT52C24T-7 offers optimal balance of ultra-small SOD523 size, 300 mW capability, and low 2 pF capacitance - making it preferred for high-density, low-noise, and thermally constrained 24 V reference designs.
Availability
BZT52C24T-7 is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB-C power delivery monitoring, and automotive body control modules requiring stable component supply with traceable sourcing and lifecycle continuity.
Supply support for BZT52C24T-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 centers across Asia and manufacturing in IATF 16949-certified facilities.
The BZT52 series targets cost-sensitive, high-volume applications demanding JEDEC-reliable Zener performance in miniature packages - especially for voltage reference, overvoltage protection, and biasing in consumer, industrial, and automotive subsystems.
FAQ
What is the maximum steady-state zener current for BZT52C24T-7 at 70°C ambient?
At 70°C ambient, the power derating curve (Fig. 1) reduces allowable dissipation to ~225 mW. With VZ ≈ 24 V, maximum steady-state current is 225 mW ÷ 24 V ≈ 9.4 mA - well above the 5 mA test condition, confirming safe operation in most 24 V regulator feedback paths.
Does BZT52C24T-7 have automotive qualification?
No - BZT52C24T-7 is not AEC-Q200 qualified. However, Diodes Inc. offers the automotive-grade BZT52C24TQ-7-F variant (same electrical specs, Q-suffix) manufactured in IATF 16949 facilities and PPAP-capable, intended for automotive body electronics and infotainment systems.
How does the SOD523 package affect solder joint reliability during reflow?
The SOD523's matte tin annealed alloy 42 leads meet MIL-STD-202 Method 208 for solderability, and its low mass enables uniform heating. Diodes Inc. specifies no special profile - standard J-STD-020 Class 1 reflow (peak 260°C) yields >99.9% void-free joints on properly designed pads per their recommended layout (G = 0.80 mm, X = 0.60 mm).
Can BZT52C24T-7 be used in place of a 22 V Zener for tighter tolerance?
No - BZT52C24T-7 has a fixed 24 V nominal rating (22.8–25.6 V). For 22 V regulation, use BZT52C22T-7 (20.8–23.3 V range); substituting 24 V for 22 V would raise clamping voltage by >9%, risking overvoltage damage to downstream 22 V-rated components.
BZT52C24T-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±6%
- Power - Max:
- 300 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-523
BZT52C24T-7 FAQ
1.How can I place an order for BZT52C24T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C24T-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 BZT52C24T-7 reliable?
The price and inventory of BZT52C24T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C24T-7 is usually 5 days.
3.What payment methods are accepted for BZT52C24T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C24T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C24T-7?
BZT52C24T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C24T-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 BZT52C24T-7?
For technical support, including BZT52C24T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C24T-7 requirements.
6.How does Aetrix verify that BZT52C24T-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C24T-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 BZT52C24T-7 meets industry standards.
7.What is the process for return or replacement of BZT52C24T-7?
All BZT52C24T-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C24T-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 BZT52C24T-7 part is unused and in its original packaging.
Return procedure for BZT52C24T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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