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Nexperia USA Inc. BZT5250H-C12-QX
- Part No.:
- BZT5250H-C12-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-C12-QX.pdf
- Description:
- DIODE ZENER 12V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:4,963
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Product details
Overview
BZT5250H-C12-QX from Nexperia is a low-current Zener diode in SOD123F package, rated for 12 V nominal Zener voltage (±5 % tolerance), 50 µA test current, and 830 mW total power dissipation. It functions as a precision voltage reference or low-power regulation element in automotive sensor biasing, portable battery monitoring, and ECU power-rail clamping circuits.
For engineers reviewing the BZT5250H-C12-QX datasheet, BZT5250H-C12-QX pinout, BZT5250H-C12-QX application, or BZT5250H-C12-QX equivalent, this page delivers verified Zener voltage, thermal resistance, leakage behavior, AEC-Q101 qualification status, and SOD123F mounting details - all critical for low-bias, high-reliability designs.
Technical Context
This Zener diode operates with a specified 12 V nominal breakdown voltage at IZ = 50 µA, exhibiting a typical differential resistance of 150 Ω at IZ = 5 mA and a temperature coefficient of +6.0 mV/K. Its intentional minor leakage rise improves switching speed and noise suppression per AN90031.
Qualified to AEC-Q101, it supports junction temperatures from −55 °C to +150 °C and features Rth(j-a) = 330 K/W (free air) and Rth(j-sp) = 70 K/W (cathode solder point), enabling stable operation in thermally constrained automotive PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 11.4 V to 12.6 V at IZ = 50 µA - ensures ±5 % regulation accuracy under ultra-low bias conditions |
| Differential Resistance rdiff | 150 Ω max at IZ = 5 mA - maintains stable voltage under small-signal load variations |
| Temperature Coefficient SZ | +6.0 mV/K - enables predictable drift compensation in wide-temperature automotive environments |
| Reverse Current IR | ≤ 0.05 µA at VR = 9.1 V - minimizes standby power loss in battery-critical systems |
| Total Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C on 1 cm² cathode pad - defines maximum continuous DC power handling |
| Forward Voltage VF | 0.9 V max at IF = 10 mA - confirms low conduction loss during forward-biased fault conditions |
| Junction-to-Solder-Point Rth(j-sp) | 70 K/W - quantifies thermal path efficiency from die to PCB copper, critical for thermal reliability |
Pinout & Package
Package: SOD123F - surface-mount plastic package, 2.6 mm × 1.6 mm × 1.1 mm body, flat lead profile optimized for automated assembly and thermal performance on FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Marked with bar; connects to regulated output node or voltage reference point; primary heat path to PCB |
| 2 | Anode (A) | Connects to ground or lower-potential rail; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Low 50 µA test current | Enables stable regulation in microamp-level bias networks common in sensor front-ends and sleep-mode circuits |
| Optimized leakage profile | Intentional minor IR increase reduces switching transients and broadband noise per AN90031 |
| SOD123F thermal design | 1 cm² cathode pad achieves 70 K/W junction-to-solder-point resistance for improved power derating |
| ±5 % voltage tolerance | Cost-optimized binning for non-critical regulation where tight tolerance is unnecessary |
Applications
| Automotive Cabin Sensor Biasing | Portable Battery Voltage Monitor |
|---|---|
Use Scenario: Providing stable 12 V reference for MEMS pressure sensor signal conditioning in HVAC control modules. IC Role / Device Role / Timing Role: Zener voltage reference establishing analog input scaling and ADC offset calibration point. Use Value: Low 50 µA test current minimizes quiescent drain on vehicle's always-on 12 V rail while maintaining ±5 % accuracy across −40 °C to +125 °C. |
Use Scenario: Clamping and regulating supply to fuel gauge IC in lithium-ion powered handheld tools. IC Role / Device Role / Timing Role: Low-power shunt regulator maintaining reference stability during battery discharge from 12.6 V to 9.0 V. Use Value: 0.05 µA reverse leakage at 9.1 V preserves battery life over months of storage without compromising wake-up accuracy. |
| ECU Power-Rail Clamp | Industrial PLC Input Protection |
Use Scenario: Suppressing transient overvoltage on 12 V microcontroller I/O supply in engine control units. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting rail excursions during load-dump events. Use Value: Optimized leakage profile enables sub-10 ns turn-on response and reduced EMI generation compared to standard Zeners. |
Use Scenario: Protecting 24 V digital input stage of programmable logic controller against field-wiring surges. IC Role / Device Role / Timing Role: Precision voltage limiter defining logic-high threshold and absorbing induced transients. Use Value: AEC-Q101 qualification ensures long-term parametric stability under industrial vibration and thermal shock conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT5250H-B12-Q | ±2 % tolerance (11.8–12.2 V), lower leakage (0.1 µA at 9.1 V), same SOD123F package | Preferred where tighter regulation is required and higher leakage is unacceptable | Select when system-level accuracy demands < ±2 % and leakage budget allows 0.1 µA |
| MMSZ5242B-TP | 12 V nominal, ±5 %, 500 mW Ptot, SOD-123 package, no AEC-Q101 qualification | Lower power rating and unqualified for automotive use limits deployment to consumer-grade boards | Choose only for cost-sensitive non-automotive applications with < 500 mW thermal constraints |
Compared with BZT5250H-C12-QX, BZT5250H-B12-Q offers tighter voltage control but higher leakage, while MMSZ5242B-TP sacrifices automotive qualification and thermal headroom for lower unit cost in non-critical designs.
Availability
BZT5250H-C12-QX is available at Aetrix Electronics and suitable for automotive sensor biasing, portable battery monitoring, and ECU power-rail clamping requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZT5250H-C12-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 essential efficiency-enhancing components, delivering high-performance, reliable, and scalable solutions for automotive, industrial, and mobile markets.
BZT5250H-C12-QX belongs to the BZT5250H-Q series of low-current Zener diodes engineered specifically for AEC-Q101-compliant automotive subsystems requiring ultra-low bias current and enhanced noise immunity.
FAQ
What is the Zener voltage tolerance and test condition for BZT5250H-C12-QX?
The BZT5250H-C12-QX has a nominal Zener voltage of 12 V with ±5 % tolerance, specified at a test current of 50 µA. This low-current condition ensures accurate characterization for battery-powered and low-bias applications where traditional 5 mA testing would be inappropriate.
Is BZT5250H-C12-QX qualified for automotive use?
Yes - BZT5250H-C12-QX is fully qualified to AEC-Q101 for discrete semiconductors, including stress tests for temperature cycling, high-temperature reverse bias, and electrostatic discharge. It is recommended for automotive applications including engine control, cabin electronics, and ADAS sensor interfaces.
How does the "intentional minor rise of leakage current" benefit circuit performance?
This controlled leakage increase, documented in application note AN90031, reduces minority-carrier storage time and suppresses high-frequency ringing during switching transitions - resulting in faster turn-on response and lower broadband noise generation in clamping and reference applications.
What is the thermal resistance from junction to solder point, and why does it matter?
Rth(j-sp) is 70 K/W, measured at the cathode solder point on a 1 cm² copper pad. This value directly determines how much power can be safely dissipated before exceeding the 150 °C maximum junction temperature - a key parameter for thermal design in space-constrained automotive PCBs.
BZT5250H-C12-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):
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT5250H-C12-QX FAQ
1.How can I place an order for BZT5250H-C12-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-C12-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-C12-QX reliable?
The price and inventory of BZT5250H-C12-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-C12-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-C12-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-C12-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-C12-QX?
BZT5250H-C12-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-C12-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-C12-QX?
For technical support, including BZT5250H-C12-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-C12-QX requirements.
6.How does Aetrix verify that BZT5250H-C12-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-C12-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-C12-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-C12-QX?
All BZT5250H-C12-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-C12-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-C12-QX part is unused and in its original packaging.
Return procedure for BZT5250H-C12-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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