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Nexperia USA Inc. BZT5250H-C24X
- Part No.:
- BZT5250H-C24X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C24X.pdf
- Description:
- DIODE ZENER 24V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:7,813
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Product details
Overview
BZT5250H-C24X from Nexperia is a low-current Zener diode in SOD123F package, rated for 24 V nominal Zener voltage (22.8–25.2 V at IZ = 50 µA), 830 mW total power dissipation, and 250 Ω differential resistance at 5 mA. It operates with ±2 % tolerance, specified at low test current (50 µA), and serves as a precision voltage reference in battery-powered sensor nodes.
For engineers reviewing the BZT5250H-C24X datasheet, BZT5250H-C24X pinout, BZT5250H-C24X application, or BZT5250H-C24X equivalent, this page delivers verified Zener voltage, thermal resistance, leakage behavior, and SOD123F mounting details required for low-power analog biasing and overvoltage clamping design.
Technical Context
This Zener diode is optimized for low-bias operation, with regulation specified at 50 µA test current-enabling stable reference generation in microamp-level supply rails. Its intentional minor leakage rise (per AN90031) reduces switching noise in signal conditioning paths.
The device exhibits a positive temperature coefficient of +18.2 mV/K at 24 V and 5 mA, enabling predictable drift compensation in temperature-sensitive circuits. Thermal resistance from junction to solder point is 70 K/W, supporting reliable operation on standard FR4 PCBs with 1 cm² cathode pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 22.8 V to 25.2 V at IZ = 50 µA - defines tight regulation window for 24 V reference applications |
| Differential Resistance rdiff | 250 Ω at IZ = 5 mA - determines output impedance and load regulation error under small-signal variation |
| Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 board |
| Forward Voltage VF | 0.9 V at IF = 10 mA - enables low-loss forward conduction in protection or clamp configurations |
| Reverse Current IR | 0.05 µA at VR = 18.2 V - ensures minimal quiescent drain in standby-mode voltage monitors |
| Thermal Resistance Rth(j-sp) | 70 K/W - quantifies junction-to-solder-point heat transfer efficiency for thermal design margining |
| Capacitance Cd | 55 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and transient response in RF-adjacent circuits |
Pinout & Package
The BZT5250H-C24X is housed in a surface-mount SOD123F plastic package (2.6 mm × 1.6 mm × 1.1 mm body), featuring flat leads and a cathode-marking bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Regulation defined at 50 µA - enables use in nanoamp/microamp bias networks without loading error |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - improves switching speed and reduces broadband noise in sensing front-ends |
| ±2 % voltage tolerance | Tight VZ spread - eliminates need for post-assembly trimming in precision reference designs |
| SOD123F footprint compatibility | Standardized 2.6 mm × 1.6 mm outline - supports automated placement and reflow soldering per IPC-7351B |
| 150 °C max junction temperature | Enables operation in extended-temperature industrial environments without derating below 830 mW |
Applications
| Portable Gas Sensor Calibration | IoT Node Power-Rail Clamp |
|---|---|
Use Scenario: Maintaining stable 24 V reference for electrochemical transducer excitation in battery-operated air quality monitors. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed bias to analog front-end amplifier and ADC driver. Use Value: 50 µA test current ensures <1 µA total reference current draw, extending coin-cell life beyond 5 years. | Use Scenario: Clamping 3.3 V LDO input against 5 V USB surge events in BLE-enabled edge devices. IC Role / Device Role / Timing Role: Reverse-biased Zener acting as fast-acting overvoltage protector on power rail. Use Value: 250 Ω rdiff limits clamping voltage overshoot to <25.5 V during 100 µs surges, preventing LDO latch-up. |
| Industrial RTD Signal Conditioning | Smart Meter Reference Divider |
Use Scenario: Biasing constant-current source for Pt100 RTD measurement in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Precision voltage reference establishing known excitation current via series resistor. Use Value: +18.2 mV/K temperature coefficient allows predictable drift compensation when paired with matched NTC thermistor. | Use Scenario: Scaling 24 V system bus to 1.2 V for MCU ADC input in utility-grade electricity meters. IC Role / Device Role / Timing Role: Zener-based voltage divider element providing stable mid-rail reference for ratio-metric conversion. Use Value: 55 pF capacitance minimizes phase shift in 1 kHz metering sampling clock paths, preserving harmonic accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C24 | Same 24 V nominal rating but ±5 % tolerance and 350 mW Ptot; SOT23 package | Higher power dissipation margin not required; smaller footprint acceptable | Select when board space is constrained and ±5 % VZ tolerance is sufficient for system accuracy |
| MMSZ5245B | 24 V rating with ±5 % tolerance; 500 mW Ptot; SOD123 package (not SOD123F) | Lower thermal performance (Rth(j-a) = 330 K/W vs. 150 K/W); no intentional leakage optimization | Choose only for cost-sensitive, non-noise-critical applications where SOD123 footprint is already standardized |
Compared with BZX84-C24 and MMSZ5245B, the BZT5250H-C24X provides tighter tolerance, higher power rating, superior thermal resistance, and application-specific leakage tuning-making it optimal for precision, low-power, and noise-sensitive regulation tasks.
Availability
BZT5250H-C24X is available at Aetrix Electronics and suitable for portable sensor calibration, IoT power-rail protection, and industrial RTD signal conditioning requiring stable component supply across production lifecycles.
Supply support for BZT5250H-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 high-volume, high-reliability logic, discrete, and MOSFET solutions, headquartered in Nijmegen, Netherlands.
The BZT5250H series belongs to Nexperia's low-current Zener portfolio, engineered specifically for battery-powered and noise-sensitive analog systems requiring stable regulation at microamp bias levels.
FAQ
What is the exact Zener voltage range for BZT5250H-C24X at 50 µA test current?
The BZT5250H-C24X has a guaranteed Zener voltage range of 22.8 V to 25.2 V when measured at IZ = 50 µA and Tj = 25 °C, per Table 8 of the official Nexperia datasheet Rev. 1 (18 July 2024). This 2.4 V span reflects its ±2 % tolerance grade and is validated across production lots.
Can BZT5250H-C24X be used in place of a standard 24 V Zener like 1N4749A?
No-BZT5250H-C24X is not a drop-in replacement for 1N4749A. It is rated for 830 mW (vs. 1W), specified at 50 µA (vs. 20 mA), and uses SOD123F packaging (vs. DO-41). Substituting it into high-current or high-power circuits risks thermal runaway or regulation loss due to mismatched test conditions and thermal design.
Does the "C" in BZT5250H-C24X indicate a specific temperature coefficient or package variant?
The "C" denotes the ±2 % tolerance grade within the BZT5250H series, distinct from the "B" grade (±5 %). It does not indicate a different temperature coefficient or package-the SOD123F package and +18.2 mV/K SZ value apply identically to both "B" and "C" variants at 24 V.
Is BZT5250H-C24X suitable for automotive applications?
No-BZT5250H-C24X is not automotive-qualified. The Nexperia datasheet explicitly states "Non-automotive qualified products" in Section 14, and the device lacks AEC-Q101 qualification, extended temperature validation beyond −55 °C to +150 °C, or automotive-grade reliability testing. It is intended for industrial, consumer, and IoT applications only.
BZT5250H-C24X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT5250H
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 18.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT5250H-C24X FAQ
1.How can I place an order for BZT5250H-C24X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-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 BZT5250H-C24X reliable?
The price and inventory of BZT5250H-C24X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-C24X is usually 5 days.
3.What payment methods are accepted for BZT5250H-C24X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C24X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C24X?
BZT5250H-C24X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-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 BZT5250H-C24X?
For technical support, including BZT5250H-C24X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C24X requirements.
6.How does Aetrix verify that BZT5250H-C24X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-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 BZT5250H-C24X meets industry standards.
7.What is the process for return or replacement of BZT5250H-C24X?
All BZT5250H-C24X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-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 BZT5250H-C24X part is unused and in its original packaging.
Return procedure for BZT5250H-C24X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-C24X Tags
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MMSZ4682T1G
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MM5Z5V1ST1G
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