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Nexperia USA Inc. BZT5250H-C12X
- Part No.:
- BZT5250H-C12X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C12X.pdf
- Description:
- DIODE ZENER 12V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:6,990
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Product details
Overview
BZT5250H-C12X from Nexperia is a low-current Zener diode in SOD123F package, providing 12 V nominal regulation at 50 µA test current with ±5 % tolerance, 150 Ω typical differential resistance at 5 mA, and optimized leakage for fast switching in portable voltage reference circuits.
For engineers reviewing the BZT5250H-C12X datasheet, BZT5250H-C12X pinout, BZT5250H-C12X application, or BZT5250H-C12X equivalent, this page delivers verified Zener voltage, thermal resistance, forward voltage, power dissipation, and cathode/anode terminal mapping for low-bias regulation design.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified working voltage of 11.4 V to 12.6 V at IZ = 5 mA, exhibiting a temperature coefficient of +6.0 mV/K and junction-to-ambient thermal resistance of 150 K/W on standard FR4 PCB mounting.
It features intentional minor leakage current enhancement per AN90031 to reduce noise and improve transient response, while maintaining low 830 mW total power dissipation and 375 mW derated rating at 25 °C ambient on standard footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 11.4 V to 12.6 V at IZ = 5 mA - defines stable regulation window under typical bias |
| Differential Resistance rdiff | 150 Ω max at IZ = 5 mA - determines output impedance and load regulation error |
| Forward Voltage VF | 0.9 V max at IF = 10 mA - limits conduction loss during forward operation |
| Total Power Dissipation Ptot | 830 mW max at Tamb ≤ 25 °C with 1 cm² cathode pad - sets thermal design margin for PCB layout |
| Junction-to-Ambient Rth(j-a) | 150 K/W - enables thermal rise calculation (ΔT = P × Rth) for reliability validation |
| Reverse Current IR | 0.05 µA max at VR = 9.1 V - ensures minimal quiescent current in standby regulation |
| Operating Temperature | −55 °C to +150 °C - supports industrial and extended-temperature embedded applications |
Pinout & Package
SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, flat lead profile, cathode marked by bar on 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; reverse-biased configuration enables Zener breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Low test current specification | 50 µA - enables stable regulation in ultra-low-power battery-powered systems |
| Optimized leakage profile | Intentional minor rise per AN90031 - reduces switching noise without compromising regulation accuracy |
| Tight voltage tolerance | ±5 % (C-series) - ensures predictable clamping level across production lots |
| Small-form-factor SMD | SOD123F footprint - supports high-density PCB layouts with automated assembly compatibility |
| Thermal performance | 150 K/W Rth(j-sp) - allows direct thermal coupling to copper pour for improved power handling |
Applications
| Portable Battery Voltage Reference | Low-Power Sensor Biasing |
|---|---|
Use Scenario: Providing stable 12 V reference for ADCs and comparators in coin-cell–powered IoT sensors. IC Role / Device Role / Timing Role: Zener voltage reference diode operating in reverse breakdown to fix analog reference potential. Use Value: 50 µA test current minimizes battery drain while ±5 % tolerance ensures consistent measurement offset across units. |
Use Scenario: Supplying precise bias voltage to MEMS pressure sensor front-end amplifiers in wearables. IC Role / Device Role / Timing Role: Low-noise Zener regulator establishing clean supply rail for analog signal conditioning. Use Value: Optimized leakage profile suppresses switching transients that would otherwise couple into sensitive analog paths. |
| Microcontroller Reset Circuit | ESD-Protected Signal Clamping |
Use Scenario: Generating threshold voltage for RC-based reset generator in 32-bit microcontrollers with 12 V auxiliary rails. IC Role / Device Role / Timing Role: Precision Zener defining reset assertion voltage level in power-on sequencing logic. Use Value: 150 Ω differential resistance ensures sharp voltage transition at threshold, improving reset timing repeatability. |
Use Scenario: Clamping I²C bus lines against ESD events in industrial control modules with 12 V system rails. IC Role / Device Role / Timing Role: Bidirectional protection device using Zener breakdown and forward conduction to limit overvoltage. Use Value: 0.9 V forward voltage enables fast turn-on during positive transients, complementing TVS diode response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-C12 | Same 12 V nominal, ±5 %, but rated at 500 mW Ptot and uses SOD-123 (not SOD123F) package | Larger thermal resistance (250 K/W), less suitable for high-density or thermally constrained layouts | Select when legacy footprint compatibility is required and power dissipation remains below 375 mW |
| MMSZ5242B | 12 V, ±5 %, 500 mW rating, SOD-123 package, higher rdiff (250 Ω max at 20 mA) | Higher dynamic impedance degrades regulation under varying load; no intentional leakage optimization | Prefer only if cost sensitivity outweighs noise and thermal performance requirements |
Compared with BZT5250H-C12X, BZT52-C12 offers identical electrical specs but inferior thermal performance due to larger package thermal resistance, while MMSZ5242B trades off regulation stability and noise behavior for broader distributor availability.
Availability
BZT5250H-C12X is available at Aetrix Electronics and suitable for portable battery management, low-power sensor interfaces, and microcontroller reset circuits requiring stable component supply with tight voltage tolerance and low quiescent current.
Supply support for BZT5250H-C12X 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 energy-efficient voltage reference and regulation in space-constrained, battery-operated systems.
FAQ
What is the exact Zener voltage range for BZT5250H-C12X at 5 mA test current?
The BZT5250H-C12X has a guaranteed Zener voltage range of 11.4 V to 12.6 V when measured at IZ = 5 mA and Tj = 25 °C, per Table 8 of the official Nexperia datasheet Rev. 1 (July 2024). This ±5 % tolerance is tighter than the B-series (±2 %) and reflects its C-grade binning.
Can BZT5250H-C12X be used in forward conduction mode?
Yes - it conducts forward with VF ≤ 0.9 V at IF = 10 mA, making it usable as a low-drop rectifier or clamp in bidirectional protection schemes. However, its primary design intent is reverse-bias Zener regulation, and forward surge capability is limited to 200 mA per absolute maximum ratings.
How does the "intentional minor rise of leakage current" affect circuit performance?
This feature, detailed in application note AN90031, slightly increases reverse leakage near breakdown to dampen parasitic oscillations and reduce broadband noise - particularly beneficial in high-gain analog stages or clock distribution networks where Zener noise could modulate timing signals.
Is the SOD123F package compatible with standard SOD-123 reflow footprints?
No - SOD123F has a flatter profile (1.1 mm height vs. 1.3 mm for SOD-123) and tighter lead spacing; Nexperia specifies a dedicated reflow footprint (Fig. 10) with 1.2 mm solder land width and 2.8 mm occupied length. Using standard SOD-123 pads risks insufficient solder fillet and mechanical lift.
BZT5250H-C12X 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):
- 12 V
- Tolerance:
- ±5%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 9.1 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-C12X FAQ
1.How can I place an order for BZT5250H-C12X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C12X 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-C12X reliable?
The price and inventory of BZT5250H-C12X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-C12X is usually 5 days.
3.What payment methods are accepted for BZT5250H-C12X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C12X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C12X?
BZT5250H-C12X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C12X 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-C12X?
For technical support, including BZT5250H-C12X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C12X requirements.
6.How does Aetrix verify that BZT5250H-C12X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C12X 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-C12X meets industry standards.
7.What is the process for return or replacement of BZT5250H-C12X?
All BZT5250H-C12X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C12X, 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-C12X part is unused and in its original packaging.
Return procedure for BZT5250H-C12X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-C12X Tags
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