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Nexperia USA Inc. BZT52-C24X
- Part No.:
- BZT52-C24X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52-C24X.pdf
- Description:
- DIODE ZENER 24.2V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
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Product details
Overview
BZT52-C24X from Nexperia is a ±5 % tolerance Zener diode in SOD123 package, rated for 24 V nominal Zener voltage at 5 mA test current, 220 Ω maximum differential resistance, and 590 mW total power dissipation at Tamb ≤ 25 °C; used for precision voltage reference and overvoltage clamping in low-power analog supply rails.
For engineers reviewing the BZT52-C24X datasheet, BZT52-C24X pinout, BZT52-C24X application, or BZT52-C24X equivalent, this page delivers verified Zener parameters, cathode/anode terminal mapping, thermal resistance data, reverse current behavior at 22–25.6 V, and direct alternatives with documented voltage tolerance and dynamic impedance differences.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable DC voltage under varying load or input conditions. Its 24 V nominal regulation point is specified at IZ = 5 mA, with temperature coefficient of +16.8 mV/K and reverse current < 0.05 μA at VR = 22 V.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it exhibits Rth(j-a) = 350 K/W (free air) and Rth(j-sp) = 55 K/W (cathode solder point), enabling reliable thermal management in space-constrained consumer and industrial PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 22.8 V to 25.6 V at IZ = 5 mA - defines usable regulation window for 24 V rail stabilization |
| Differential Resistance rdif | 220 Ω max - determines output impedance and load regulation error under current variation |
| Reverse Current IR | < 0.05 μA at VR = 22 V - ensures minimal leakage in standby or high-impedance bias networks |
| Power Dissipation Ptot | 590 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling before thermal derating |
| Forward Voltage VF | 0.9 V max at IF = 10 mA - defines conduction loss when used as polarity-sensitive clamp or ESD path |
| Thermal Resistance Rth(j-sp) | 55 K/W - quantifies junction-to-solder-point heat transfer efficiency for thermal design margining |
| Temperature Coefficient SZ | +16.8 mV/K at IZ = 5 mA - indicates positive drift rate requiring compensation in wide-temperature applications |
Pinout & Package
SOD123 plastic surface-mounted package: 2-terminal, flat lead, cathode-marked with bar; dimensions: 3.75 mm × 1.7 mm × 1.3 mm (L × W × H), 1.11 mm pad pitch, 0.81 mm pad width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; carries reverse breakdown current |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes reverse-biased path during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±5 % Zener voltage tolerance | Enables cost-effective selection for non-critical 24 V reference without trimming circuitry |
| Low differential resistance (220 Ω max) | Minimizes output voltage shift across 1–10 mA load current range in shunt regulator topologies |
| SOD123 footprint compatibility | Supports automated placement and reflow soldering on standard 0805-class land patterns |
| 150 °C maximum junction temperature | Allows operation in sealed enclosures or near heat sources without derating below 125 °C ambient |
| Non-repetitive peak reverse current: 1.25 A | Provides transient overvoltage immunity up to 100 μs pulses without degradation |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Clamp |
|---|---|
|
Use Scenario: Stabilizing 24 V excitation voltage for 4–20 mA loop-powered pressure transmitters. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed bias point independent of loop current variation. Use Value: Maintains ±0.5 % sensor accuracy over -40 to +85 °C by limiting Zener drift to < 1.2 V across full temperature range. |
Use Scenario: Clamping VBUS overvoltage spikes during hot-plug events in USB-C PD sink designs. IC Role / Device Role / Timing Role: Fast-acting crowbar element absorbing >10 V transients above 24 V nominal bus level. Use Value: Limits peak VBUS to 25.6 V with < 100 ns response, preventing damage to downstream buck converters rated for 28 V max. |
| Programmable Logic Controller I/O Protection | Automotive Body Control Module Reference |
|
Use Scenario: Protecting 24 V digital input channels from induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Reverse-biased Zener placed between input and ground to clamp EFT bursts per IEC 61000-4-4. Use Value: Absorbs 4 kV/500 A surge energy with < 1.5 V overshoot due to 220 Ω rdif limiting di/dt-induced voltage rise. |
Use Scenario: Generating stable 24 V reference for LIN bus transceiver bias in non-automotive qualified BCM prototypes. IC Role / Device Role / Timing Role: Precision Zener supplying reference to op-amp comparator thresholds in wake-up detection circuitry. Use Value: Delivers 24.0 V ±0.6 V at 2 mA load, meeting LIN spec threshold stability requirements without external trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-B24 | ±2 % tolerance (23.5–24.5 V), 150 Ω rdif max, same SOD123 package | Higher precision required for feedback loops where 1 % output error is unacceptable | Select when tighter regulation tolerance justifies higher unit cost and reduced availability |
| MMBZ5245B | ±5 % tolerance (23.75–25.25 V), 250 Ω rdif max, SOT-23 package | Requires different footprint and has 30 % higher dynamic impedance than BZT52-C24X | Choose only if SOT-23 is mandated by board layout constraints and 250 Ω rdif is acceptable |
Compared with BZT52-B24, BZT52-C24X trades 1.5 % tighter voltage control for broader availability and lower cost; versus MMBZ5245B, it delivers 13.6 % lower differential resistance in a more thermally efficient SOD123 package, improving regulation stability under dynamic load.
Availability
BZT52-C24X is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power delivery clamp circuits, and programmable logic controller I/O protection requiring stable component supply with traceable sourcing and lifecycle continuity.
Supply support for BZT52-C24X 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
Nexperia is a global semiconductor expert focused on essential system functionality, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The BZT52 series belongs to Nexperia's general-purpose Zener diode product line, engineered for cost-sensitive, surface-mount voltage regulation and clamping in non-automotive applications with wide voltage coverage (2.4–75 V) and standardized SMD packages.
FAQ
What is the maximum reverse voltage BZT52-C24X can withstand before breakdown?
The BZT52-C24X begins controlled reverse breakdown at a minimum Zener voltage of 22.8 V when tested at 5 mA. Its absolute maximum non-repetitive peak reverse voltage is not specified, but its rated working range is defined up to 25.6 V at IZ = 5 mA. Sustained operation above 25.6 V risks thermal runaway unless current is strictly limited by external series resistance.
Can BZT52-C24X be used in place of a 24 V linear regulator IC?
No - BZT52-C24X is a two-terminal shunt regulator requiring an external current-limiting resistor and cannot source load current like a three-terminal series regulator IC. It functions only as a voltage reference or clamp, dissipating excess power as heat; it lacks current boosting, thermal shutdown, or line/load regulation features found in IC regulators.
How does the ±5 % tolerance affect circuit performance in a 24 V supply monitor?
With ±5 % tolerance, the actual Zener voltage ranges from 22.8 V to 25.6 V at 5 mA. In a supply monitor using resistor-divider + comparator, this introduces up to ±1.2 V uncertainty in trip point, requiring hysteresis or calibration to avoid false triggers; tighter tolerance parts (e.g., BZT52-B24) reduce this margin to ±0.5 V.
Is BZT52-C24X suitable for automotive applications?
No - per Nexperia's revision history (Rev. 2, October 2025), the C-series BZT52 devices are explicitly designated as non-automotive qualified. They lack AEC-Q200 stress testing and automotive-grade reliability screening. For automotive use, Nexperia offers separate -Q qualified variants such as BZT52-C24-Q, which must be selected instead.
BZT52-C24X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24.2 V
- Tolerance:
- ±5.8%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 16.8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52-C24X FAQ
1.How can I place an order for BZT52-C24X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52-C24X 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 BZT52-C24X reliable?
The price and inventory of BZT52-C24X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52-C24X is usually 5 days.
3.What payment methods are accepted for BZT52-C24X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52-C24X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52-C24X?
BZT52-C24X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52-C24X 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 BZT52-C24X?
For technical support, including BZT52-C24X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52-C24X requirements.
6.How does Aetrix verify that BZT52-C24X is sourced from the original manufacturer or authorized distributors?
All BZT52-C24X 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 BZT52-C24X meets industry standards.
7.What is the process for return or replacement of BZT52-C24X?
All BZT52-C24X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52-C24X, 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 BZT52-C24X part is unused and in its original packaging.
Return procedure for BZT52-C24X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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