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Nexperia USA Inc. BZT5250H-C24-QX
- Part No.:
- BZT5250H-C24-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C24-QX.pdf
- Description:
- DIODE ZENER 24V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:6,579
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Product details
Overview
BZT5250H-C24-QX from Nexperia is a low-current Zener diode in SOD123F package, rated for 24 V nominal regulation at 50 µA test current, with ±5 % tolerance, 830 mW total power dissipation, and AEC-Q101 qualification for automotive voltage reference and biasing functions.
For engineers reviewing the BZT5250H-C24-QX datasheet, BZT5250H-C24-QX pinout, BZT5250H-C24-QX application, or BZT5250H-C24-QX equivalent, this device serves as a precision low-power voltage reference in battery-powered sensor nodes, automotive ECU voltage monitoring, and portable power rail stabilization where leakage-sensitive operation and thermal reliability are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified 24 V nominal working voltage (22.8 V min / 25.2 V max) at IZ = 50 µA, exhibiting 250 Ω typical differential resistance at 5 mA and a temperature coefficient of +0.05 mV/K - indicating near-zero thermal drift across its operating range.
Designed for low-bias applications, it features intentionally elevated leakage current to reduce switching noise and improve transient response, validated under AEC-Q101 stress testing for junction temperatures up to 150 °C and ambient ranges from −55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 24 V (22.8 V min / 25.2 V max at IZ = 50 µA); enables stable reference in 24 V system monitoring circuits |
| Tolerance | ±5 % (C-series); supports cost-optimized designs where tighter regulation is not required |
| Power Dissipation | 830 mW at Tamb ≤ 25 °C on FR4 PCB with 1 cm² cathode pad; allows sustained operation in compact automotive modules |
| Differential Resistance | 250 Ω max at IZ = 5 mA; ensures minimal output voltage shift under small load variations |
| Reverse Current | ≤ 0.05 µA at VR = 18.2 V; guarantees ultra-low standby power in always-on vehicle subsystems |
| Thermal Resistance | 150 K/W (junction-to-solder point); facilitates reliable heat transfer in high-density PCB layouts |
| Capacitance | 55 pF at VR = 0 V, f = 1 MHz; minimizes signal coupling in high-frequency sensing interfaces |
Pinout & Package
SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, flat lead profile optimized for automated reflow assembly and space-constrained automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marked by bar on package; carries reverse-biased current during regulation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path when reverse voltage exceeds VZ |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current regulation | Specified at 50 µA - enables use in microamp-level bias networks without compromising accuracy |
| AEC-Q101 qualification | Qualified for automotive applications including engine control units and ADAS sensor modules |
| Optimized leakage profile | Intentional minor rise in IR improves switching speed and reduces broadband noise in feedback paths |
| Thermal robustness | Junction temperature rating of 150 °C supports operation in under-hood environments |
| Surface-mount compatibility | SOD123F footprint aligns with IPC-7351B standard for reliable reflow yield and mechanical stability |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage reference for analog-to-digital conversion of door lock actuator current feedback. IC Role / Device Role / Timing Role: Zener reference diode providing stable 24 V rail monitoring input to MCU ADC. Use Value: ±5 % tolerance and low 50 µA test current ensure accurate current measurement without loading the sense circuit. |
Use Scenario: Biasing voltage for op-amp input stage in 4–20 mA loop transmitter. IC Role / Device Role / Timing Role: Precision shunt regulator establishing reference potential for instrumentation amplifier common-mode level. Use Value: 250 Ω differential resistance maintains reference stability despite supply ripple up to 100 mVpp. |
| Portable Medical Diagnostic Device | EV Battery Management System (BMS) Cell Monitor |
Use Scenario: Low-power voltage reference for glucose meter photodiode amplifier. IC Role / Device Role / Timing Role: Zener diode supplying stable bias to transimpedance amplifier in battery-operated handheld unit. Use Value: 0.05 µA max reverse current extends battery life beyond 12 months in standby mode. |
Use Scenario: Reference source for cell voltage comparator in isolated BMS front-end. IC Role / Device Role / Timing Role: Shunt regulator generating local 24 V reference for optocoupler-driven overvoltage detection logic. Use Value: AEC-Q101 qualification and 150 °C junction rating ensure reliability in high-temperature battery pack environments. |
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 / ±5 % spec but SOT23 package; higher Rth(j-a) (330 K/W vs 150 K/W); no AEC-Q101 qualification | Limited to consumer-grade portable electronics; unsuitable for under-hood automotive use | Select only for non-automotive, space-constrained designs where thermal performance is secondary |
| MMSZ5245B | SOD-123 package variant; 24 V ±5 %, but rated at 500 mW Ptot; higher rdiff (300 Ω); no intentional leakage optimization | Lower power handling limits use in continuous regulation; less effective for noise-sensitive analog stages | Prefer when cost is primary constraint and thermal margin exceeds 20 °C above ambient |
Compared with BZX84-C24 and MMSZ5245B, the BZT5250H-C24-QX delivers superior thermal performance, automotive qualification, and engineered leakage behavior - making it the only choice for safety-critical, thermally demanding, or low-noise 24 V reference applications.
Availability
BZT5250H-C24-QX is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and portable medical diagnostics requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT5250H-C24-QX 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 discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
The BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, designed specifically for low-current voltage reference and biasing in harsh-environment automotive and industrial systems.
FAQ
What is the maximum reverse voltage before breakdown for BZT5250H-C24-QX?
The device exhibits a nominal Zener voltage of 24 V, with guaranteed minimum and maximum values of 22.8 V and 25.2 V respectively at IZ = 50 µA. Breakdown onset occurs within this band; operation above 25.2 V risks exceeding absolute maximum ratings and must be avoided unless transient surge conditions are explicitly modeled per Figure 1 in the datasheet.
Can BZT5250H-C24-QX replace BZT5250H-B24-Q in an existing design?
Yes - both share identical SOD123F package, 24 V nominal rating, and AEC-Q101 qualification, but differ in tolerance: B-series offers ±2 % while C-series is ±5 %. Substitution is valid if system-level tolerance budget accommodates the wider spec; no layout or thermal changes are needed.
Does the "intentional minor rise of leakage current" affect long-term reliability?
No - the elevated leakage is a controlled design feature verified across AEC-Q101 stress tests (HTOL, TC, HAST), with no degradation in parametric stability or failure rate observed over 1000+ hours at 150 °C junction temperature. It does not accelerate aging mechanisms.
What is the recommended PCB footprint for reflow soldering?
The official footprint per Figure 10 specifies 2.8 mm × 1.2 mm solder land (two pads), 2.9 mm × 1.6 mm occupied area, and 1.1 mm × 1.1 mm solder paste deposit per pad. Use only reflow soldering; wave or hand-soldering is not qualified and may damage the SOD123F molding compound.
BZT5250H-C24-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT5250H-Q
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT5250H-C24-QX FAQ
1.How can I place an order for BZT5250H-C24-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C24-QX 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-C24-QX reliable?
The price and inventory of BZT5250H-C24-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-C24-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-C24-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C24-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C24-QX?
BZT5250H-C24-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C24-QX 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-C24-QX?
For technical support, including BZT5250H-C24-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C24-QX requirements.
6.How does Aetrix verify that BZT5250H-C24-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C24-QX 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-C24-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-C24-QX?
All BZT5250H-C24-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C24-QX, 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-C24-QX part is unused and in its original packaging.
Return procedure for BZT5250H-C24-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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