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Nexperia USA Inc. BZT5250H-C20X
- Part No.:
- BZT5250H-C20X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C20X.pdf
- Description:
- DIODE ZENER 20V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:6,310
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Product details
Overview
BZT5250H-C20X from Nexperia is a low-current Zener diode in SOD123F package, rated for 20 V nominal Zener voltage at 50 µA test current, with ±5 % tolerance, 830 mW total power dissipation, and 15.2 Ω differential resistance at 5 mA. It serves as a precision voltage reference or low-power regulation element in battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the BZT5250H-C20X datasheet, BZT5250H-C20X pinout, BZT5250H-C20X application, or BZT5250H-C20X equivalent, this page delivers verified electrical parameters, thermal behavior, cathode/anode terminal mapping, and direct-fit alternatives for low-bias voltage stabilization designs.
Technical Context
This Zener diode operates in reverse breakdown mode with specified characteristics at IZ = 50 µA, enabling stable reference generation under ultra-low quiescent current conditions. Its intentional minor leakage rise improves switching speed and reduces noise per AN90031, distinguishing it from standard Zeners.
Thermal resistance from junction to solder point is 150 K/W, and junction-to-ambient is 330 K/W on FR4 PCB - critical for thermal design in compact SMD layouts. The device exhibits a positive temperature coefficient of +15.2 mV/K at 20 V, supporting predictable drift compensation in analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19.0 V to 21.0 V at IZ = 50 µA - defines regulation threshold with ±5 % tolerance for stable low-current biasing |
| Differential Resistance (rdiff) | 225 Ω max at IZ = 1 mA - determines output impedance and load regulation sensitivity in reference circuits |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - enables use as polarity protection or clamping diode in dual-role designs |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB with 1 cm² cathode pad |
| Reverse Current (IR) | 0.05 µA max at VR = 15.2 V - ensures minimal leakage below regulation knee, critical for battery runtime in always-on systems |
| Temperature Coefficient (SZ) | +15.2 mV/K - quantifies voltage drift per degree Celsius, enabling accurate thermal error budgeting in precision references |
| Diode Capacitance (Cd) | 60 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise rejection and stability in feedback paths |
Pinout & Package
The BZT5250H-C20X uses the SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, flat leads, cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal - reverse-biased during Zener operation |
| 2 | Anode (A) | Connected to circuit ground or lower potential rail; forms the reference return path for bias current |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Characterized at IZ = 50 µA - enables reliable regulation in µA-level bias networks without external amplification |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces switching transients and broadband noise in signal conditioning stages |
| SOD123F footprint compatibility | Standard 2.6 mm × 1.6 mm outline with 0.7 mm lead pitch - supports automated placement and reflow on high-density PCBs |
| Thermal performance | Rth(j-sp) = 150 K/W - allows direct thermal coupling to copper pour for improved long-term stability in ambient-variant environments |
Applications
| Portable Gas Sensor Calibration | IoT Node Voltage Reference |
|---|---|
Use Scenario: Battery-powered electrochemical gas sensor requiring stable 20 V bias for analog front-end amplification and ADC reference scaling. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed 20 V rail for op-amp gain setting and ADC VREF divider. Use Value: 0.05 µA leakage at 15.2 V ensures >10-year battery life in sleep mode while maintaining ±0.5 % regulation accuracy across -40 °C to +85 °C. |
Use Scenario: Sub-GHz wireless sensor node with ultra-low-power MCU needing precise 20 V supply for RF power amplifier biasing. IC Role / Device Role / Timing Role: Low-current Zener regulator stabilizing PA supply rail during transmit bursts without draining coin-cell battery. Use Value: 225 Ω rdiff limits output voltage shift to <15 mV under 100 µA dynamic load steps, preserving RF linearity. |
| Medical Wearable Signal Conditioning | Industrial Data Logger Reference |
Use Scenario: ECG front-end with isolated instrumentation amplifier requiring clean, low-noise 20 V reference for gain calibration. IC Role / Device Role / Timing Role: Noise-optimized Zener reference suppressing broadband interference via intentional leakage tuning (AN90031). Use Value: Reduced switching noise enables <85 dB SNR in 0.05–150 Hz biopotential band without additional filtering. |
Use Scenario: Ruggedized environmental data logger operating in wide-temperature industrial settings with 20 V analog sensor excitation. IC Role / Device Role / Timing Role: Temperature-compensated voltage reference delivering stable excitation to RTD/thermistor bridges. Use Value: +15.2 mV/K coefficient allows predictable drift correction in firmware, reducing calibration frequency by 60 %. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-C20 | Same 20 V nominal rating but ±5 % tolerance, 500 mW Ptot, no optimized leakage profile | Lacks AN90031 noise reduction; higher rdiff (300 Ω) degrades load regulation | Use only where cost is primary constraint and noise/leakage are non-critical |
| MMSZ5248B | 20 V nominal, ±5 %, 500 mW, SOD-123 package, rdiff = 35 Ω at 20 mA - but specified at higher IZ | Requires ≥1 mA test current; unsuitable for sub-100 µA bias networks | Select only when higher bias current is available and tighter rdiff at high IZ is needed |
Compared with BZT52-C20 and MMSZ5248B, the BZT5250H-C20X uniquely supports microampere-level biasing with noise-optimized leakage and superior thermal resistance - making it the sole choice for battery-constrained, low-noise analog reference designs.
Availability
BZT5250H-C20X is available at Aetrix Electronics and suitable for portable medical sensors, IoT edge nodes, industrial data loggers, and battery-powered instrumentation requiring stable component supply with guaranteed long-term continuity.
Supply support for BZT5250H-C20X 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 and industrial-grade components.
The BZT5250H series belongs to Nexperia's low-current Zener portfolio, engineered specifically for ultra-low-power voltage reference and regulation in battery-operated and space-constrained applications.
FAQ
What is the maximum reverse voltage before breakdown for BZT5250H-C20X?
The BZT5250H-C20X has a nominal Zener voltage of 20 V with a guaranteed range of 19.0 V to 21.0 V at IZ = 50 µA. Breakdown begins within this band; operation below 15.2 V (80 % of nominal) ensures negligible conduction, per the reverse current curve in Figure 7.
Can BZT5250H-C20X be used in forward conduction mode?
Yes - its forward voltage is specified at 0.9 V max for IF = 10 mA, making it suitable for polarity protection or clamping. However, its 200 mA absolute maximum forward current and thermal limits require careful PCB copper sizing to avoid junction overheating during sustained forward bias.
How does the "intentional minor rise of leakage current" improve performance?
Per AN90031, this controlled leakage enhancement reduces minority-carrier storage time and suppresses avalanche noise spikes during transient events - directly improving signal integrity in precision analog measurement paths without increasing static power draw.
Is BZT5250H-C20X suitable for automotive applications?
No - this device is not AEC-Q200 qualified. Nexperia explicitly states in the legal disclaimers that non-automotive qualified products like BZT5250H-C20X are not tested or warranted for automotive use, including safety-critical or life-support systems.
BZT5250H-C20X 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):
- 20 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.2 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-C20X FAQ
1.How can I place an order for BZT5250H-C20X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C20X 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-C20X reliable?
The price and inventory of BZT5250H-C20X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-C20X is usually 5 days.
3.What payment methods are accepted for BZT5250H-C20X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C20X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C20X?
BZT5250H-C20X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C20X 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-C20X?
For technical support, including BZT5250H-C20X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C20X requirements.
6.How does Aetrix verify that BZT5250H-C20X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C20X 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-C20X meets industry standards.
7.What is the process for return or replacement of BZT5250H-C20X?
All BZT5250H-C20X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C20X, 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-C20X part is unused and in its original packaging.
Return procedure for BZT5250H-C20X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-C20X Tags
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