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Nexperia USA Inc. BZT5250H-C47X
- Part No.:
- BZT5250H-C47X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C47X.pdf
- Description:
- DIODE ZENER 47V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:6,570
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Product details
Overview
BZT5250H-C47X from Nexperia is a low-current Zener diode in SOD123F package, rated for 47 V nominal Zener voltage at 50 µA test current, with ±5 % tolerance, 830 mW total power dissipation, and 375 mW PCB-mounted power rating-used for precision low-bias voltage regulation in portable battery-powered systems.
For engineers reviewing the BZT5250H-C47X datasheet, BZT5250H-C47X pinout, BZT5250H-C47X application, or BZT5250H-C47X equivalent, this page delivers verified Zener voltage, thermal resistance, differential resistance, reverse leakage, and cathode/anode terminal mapping for low-power analog reference and overvoltage clamp design.
Technical Context
This Zener operates in reverse breakdown mode with a specified 47 V nominal working voltage (C-series ±5 %) at IZ = 50 µA, optimized for low-bias operation. Its differential resistance is 375 Ω at IZ = 2 mA and 170 Ω at IZ = 5 mA, supporting stable regulation under light-load conditions.
The device features intentional minor leakage current rise per AN90031 to improve switching speed and reduce noise. Thermal resistance from junction to solder point is 150 K/W, and junction-to-ambient is 330 K/W on standard FR4 PCB-critical for thermal margin in compact SMT layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 44.0 V to 50.0 V at IZ = 50 µA - defines regulation threshold with ±5 % tolerance for stable reference under microamp bias. |
| Differential Resistance rdiff | 375 Ω at IZ = 2 mA - indicates voltage change per current step; lower than B-series variants for improved regulation linearity. |
| Reverse Current IR | ≤ 0.05 µA at VR = 32.9 V - ensures minimal quiescent drain in standby circuits. |
| Total Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C - sets maximum continuous power handling on adequately sized copper pad. |
| Forward Voltage VF | 0.9 V at IF = 10 mA - defines conduction loss when used in forward-biased protection or clamping paths. |
| Junction Temperature Tj | 150 °C maximum - constrains thermal design margin for long-term reliability in enclosed environments. |
| Package | SOD123F - 2.6 mm × 1.6 mm × 1.1 mm surface-mount plastic package with flat leads, compatible with standard reflow profiles. |
Pinout & Package
SOD123F package: 2-terminal surface-mount plastic case with cathode marked by a bar; body dimensions 2.6 mm × 1.6 mm × 1.1 mm; recommended reflow footprint per Figure 10.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; carries reverse breakdown current during regulation. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path enabling Zener conduction at VZ. |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Rated at IZ = 50 µA - enables accurate voltage reference in ultra-low-power sensor nodes and coin-cell applications. |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces switching transients and high-frequency noise in feedback loops. |
| Thermal performance | Rth(j-sp) = 150 K/W - allows direct thermal coupling to PCB copper, simplifying thermal management in space-constrained designs. |
| Small-form-factor SMT | SOD123F footprint - occupies < 4.2 mm² board area, suitable for wearables, IoT edge nodes, and multi-rail PMIC supervision circuits. |
Applications
| Portable Battery Voltage Reference | Low-Power Sensor Biasing |
|---|---|
|
Use Scenario: Providing stable 47 V reference for ADC input scaling in handheld test equipment powered by Li-ion batteries. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to fix reference potential independent of supply variation. Use Value: Enables ±0.5 % full-scale accuracy over 2.7–4.2 V battery range due to low 50 µA test current and tight 47 V tolerance. |
Use Scenario: Biasing photodiode amplifier stages in optical smoke detectors with 10-year battery life. IC Role / Device Role / Timing Role: Low-leakage Zener clamping regulator supplying clean bias to op-amp input stage. Use Value: Limits quiescent current to < 100 nA above VZ, extending battery life while maintaining signal integrity. |
| Overvoltage Clamp for MCU I/O | EEPROM Write Protection Circuit |
|
Use Scenario: Protecting 3.3 V GPIO pins against ESD and transient surges up to 15 kV in industrial control panels. IC Role / Device Role / Timing Role: Fast-switching Zener shunt element diverting surge energy before IC damage occurs. Use Value: 47 V clamping threshold prevents false triggering while allowing safe margin above 3.3 V rail. |
Use Scenario: Enabling write-protection logic in automotive body-control modules using EEPROM with 5 V programming voltage. IC Role / Device Role / Timing Role: Precision Zener sensing 47 V system rail to assert hardware write-enable only during valid programming window. Use Value: ±5 % tolerance ensures reliable enable/disable transition without false writes or lockouts across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-C47 | Same 47 V nominal, ±5 %, but rated at 5 mA test current and higher rdiff (≥500 Ω); no intentional leakage optimization. | Lacks AN90031 noise-reduction tuning; less suitable for high-speed analog feedback paths. | Select when cost sensitivity outweighs noise performance and 50 µA bias is not required. |
| MMSZ5270B | 47 V, ±5 %, SOD-123 package, but specified at 20 mA test current and higher Ptot (500 mW); rdiff = 110 Ω at 20 mA. | Higher power capability but larger thermal footprint; unsuitable for sub-100 µA bias applications. | Prefer for higher-current regulation where PCB copper area supports 500 mW dissipation. |
Compared with BZT52-C47 and MMSZ5270B, BZT5250H-C47X uniquely balances ultra-low test current (50 µA), intentional leakage tuning for noise reduction, and SOD123F compactness-making it optimal for battery-critical, low-noise analog subsystems.
Availability
BZT5250H-C47X is available at Aetrix Electronics and suitable for portable battery voltage reference, low-power sensor biasing, overvoltage clamp for MCU I/O, and EEPROM write protection circuits requiring stable component supply and traceable sourcing.
Supply support for BZT5250H-C47X 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 delivering high-performance, reliable discrete, logic, and MOSFET solutions with focus on efficiency, miniaturization, and robustness.
BZT5250H-C47X belongs to the BZT5250H series of low-current Zener diodes designed specifically for microamp-bias regulation and noise-sensitive portable electronics.
FAQ
What is the Zener voltage tolerance for BZT5250H-C47X?
The BZT5250H-C47X has a nominal Zener voltage of 47 V with ±5 % tolerance, meaning its actual VZ falls between 44.0 V and 50.0 V when measured at IZ = 50 µA and Tj = 25 °C. This tolerance is confirmed in Table 8 of the Nexperia datasheet Rev. 1 (July 2024).
Can BZT5250H-C47X be used in place of standard 47 V Zeners like BZT52-C47?
Yes, but with key trade-offs: BZT5250H-C47X is optimized for 50 µA test current and features intentional leakage tuning for faster switching and lower noise, whereas BZT52-C47 uses 5 mA test current and lacks that optimization. Substitution requires verifying bias current compatibility and noise requirements.
What is the maximum allowable ambient temperature for continuous operation?
The BZT5250H-C47X supports continuous operation from −55 °C to +150 °C ambient temperature. However, its 830 mW power rating applies only at Tamb ≤ 25 °C; derating is required above that per the thermal resistance values (Rth(j-a) = 330 K/W) and PCB layout.
How does the SOD123F package affect thermal performance compared to DO-35?
The SOD123F package offers lower thermal resistance to solder point (Rth(j-sp) = 150 K/W) versus legacy DO-35 glass packages (>500 K/W), enabling better heat transfer to PCB copper. However, its smaller mass limits peak surge energy handling-non-repetitive peak power is capped at 40 W for 100 µs pulses.
BZT5250H-C47X 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):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 170 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 32.9 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-C47X FAQ
1.How can I place an order for BZT5250H-C47X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C47X 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-C47X reliable?
The price and inventory of BZT5250H-C47X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-C47X is usually 5 days.
3.What payment methods are accepted for BZT5250H-C47X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C47X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C47X?
BZT5250H-C47X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C47X 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-C47X?
For technical support, including BZT5250H-C47X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C47X requirements.
6.How does Aetrix verify that BZT5250H-C47X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C47X 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-C47X meets industry standards.
7.What is the process for return or replacement of BZT5250H-C47X?
All BZT5250H-C47X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C47X, 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-C47X part is unused and in its original packaging.
Return procedure for BZT5250H-C47X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-C47X Tags
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