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Nexperia USA Inc. BZT5250H-B15-QX
- Part No.:
- BZT5250H-B15-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B15-QX.pdf
- Description:
- DIODE ZENER 15V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:9,369
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Product details
Overview
BZT5250H-B15-QX from Nexperia is a low-current Zener diode in SOD123F package, rated for 15 V nominal Zener voltage at 50 µA test current, with ±2 % tolerance, 830 mW total power dissipation, and AEC-Q101 qualification for automotive voltage regulation.
For engineers reviewing the BZT5250H-B15-QX datasheet, BZT5250H-B15-QX pinout, BZT5250H-B15-QX application, or BZT5250H-B15-QX equivalent, this device serves as a precision low-bias shunt regulator in battery-powered sensor nodes, ECU reference rails, and portable instrumentation where stable 15 V clamping at microampere-level bias is required.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified VZ = 14.7 V to 15.3 V at IZ = 50 µA, exhibiting low differential resistance (rdiff ≤ 200 Ω at IZ = 5 mA) and a temperature coefficient of +9.2 mV/K. Its design targets low-leakage, low-power regulation rather than high-current clamping.
It features intentional minor leakage rise per AN90031 to improve switching speed and reduce noise, and is qualified per AEC-Q101 for operation from −55 °C to +150 °C ambient, with thermal resistance Rth(j-a) = 330 K/W on FR4 PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 14.7 V to 15.3 V at IZ = 50 µA - defines precise clamping threshold for low-bias circuits |
| Tolerance | ±2 % - enables tight voltage reference accuracy without external trimming |
| Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C - supports sustained regulation in compact SMD layouts |
| Differential Resistance rdiff | ≤200 Ω at IZ = 5 mA - ensures minimal output voltage shift under small load variations |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - guarantees low conduction loss when used bidirectionally or in protection paths |
| Reverse Current IR | ≤0.05 µA at VR = 11.4 V - confirms ultra-low leakage for battery-critical standby modes |
| Thermal Resistance Rth(j-a) | 330 K/W - determines junction temperature rise under ambient-constrained PCB mounting |
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; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | VZ defined at 50 µA - enables accurate regulation in µA-bias microcontroller reset circuits and IoT sensor sleep modes |
| AEC-Q101 qualification | Qualified for automotive grade-1 (−40 °C to +125 °C case) and extended ambient (−55 °C to +150 °C) - supports under-hood and ADAS module deployment |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces switching transients and broadband noise in feedback-sensitive analog rails |
| Small-form-factor SMD | SOD123F footprint - allows placement near IC power pins with minimal PCB area and thermal coupling to adjacent components |
Applications
| Automotive Body Control Module (BCM) | Portable Medical Sensor Node |
|---|---|
Use Scenario: Providing stable 15 V reference for LIN transceiver bias and microcontroller ADC reference in door module electronics. IC Role / Device Role / Timing Role: Shunt voltage regulator maintaining rail integrity during load dump transients and battery voltage sag. Use Value: ±2 % VZ tolerance and AEC-Q101 qualification ensure functional safety compliance without external calibration. |
Use Scenario: Supplying precision bias to low-power op-amps and analog front-ends in wearable ECG patch designs. IC Role / Device Role / Timing Role: Low-current Zener reference enabling <1 µA quiescent current in active-sleep cycling. Use Value: 50 µA test current specification matches typical sensor node standby current, minimizing regulation error. |
| Industrial PLC Input Protection | Smart Meter Reference Rail |
Use Scenario: Clamping 24 V field input signals to protect downstream optocouplers and logic interfaces from overvoltage. IC Role / Device Role / Timing Role: Fast-response Zener clamp absorbing transient energy while limiting peak voltage to 15.3 V. Use Value: 200 Ω rdiff ensures <0.2 V deviation across 1 mA signal current variation, preserving analog linearity. |
Use Scenario: Stabilizing 15 V auxiliary rail for metrology ADC and real-time clock in Class 0.2 electricity meters. IC Role / Device Role / Timing Role: Temperature-stable shunt regulator compensating for supply ripple and aging drift. Use Value: +9.2 mV/K temperature coefficient enables predictable drift compensation in firmware calibration routines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-C15 | ±5 % tolerance, no AEC-Q101 qualification, same SOD123F package and 15 V nominal rating | Restricted to commercial-grade consumer or industrial control where automotive reliability is not mandated | Select when cost sensitivity outweighs long-term stability and qualification requirements |
| MMSZ5245B | ±5 % tolerance, 500 mW Ptot, SOD-123 package (identical mechanical outline), but specified at IZ = 20 mA | Higher test current shifts operating point; less suitable for µA-bias systems requiring low-leakage regulation | Prefer only if existing design uses 20 mA bias and thermal margin permits lower power rating |
Compared with BZT5250H-B15-QX, BZT52-C15 trades precision and automotive qualification for lower cost, while MMSZ5245B shifts regulation behavior toward higher-current operation-making the QX variant uniquely suited for AEC-Q101-compliant, low-bias 15 V reference applications.
Availability
BZT5250H-B15-QX is available at Aetrix Electronics and suitable for automotive electronics, portable medical devices, and smart metering systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for BZT5250H-B15-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 technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.
The BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for low-current, high-stability voltage regulation in harsh-environment automotive and portable electronics.
FAQ
What is the maximum reverse voltage before breakdown for BZT5250H-B15-QX?
The device exhibits sharp Zener breakdown at 14.7 V minimum and 15.3 V maximum when tested at 50 µA. Below 11.4 V, reverse current remains ≤0.05 µA - confirming stable non-conducting behavior up to 75 % of nominal VZ. This ensures robust immunity to ripple and noise on regulated rails.
Can BZT5250H-B15-QX be used in parallel for higher power handling?
No - Zener diodes exhibit negative temperature coefficients and parameter spread; paralleling causes current hogging and thermal runaway. For >830 mW dissipation, use a single higher-rated device or active regulation. The SOD123F thermal resistance (330 K/W) also limits safe parallel operation even if matched.
How does the "intentional minor rise of leakage current" affect circuit performance?
Per AN90031, this controlled leakage improves dynamic response by reducing minority-carrier storage time, lowering switching noise in feedback loops and improving transient suppression in analog signal chains - without compromising DC regulation accuracy at 50 µA bias.
Is the SOD123F package compatible with standard reflow profiles?
Yes - Nexperia specifies reflow soldering only, with JEDEC J-STD-020-compliant peak temperature up to 260 °C. The recommended footprint (2.9 mm × 1.6 mm solder land, dual 1.2 mm × 1.1 mm pads) ensures reliable wetting and mechanical strength without tombstoning on automated assembly lines.
BZT5250H-B15-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):
- 15 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.4 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-B15-QX FAQ
1.How can I place an order for BZT5250H-B15-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B15-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-B15-QX reliable?
The price and inventory of BZT5250H-B15-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-B15-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-B15-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B15-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B15-QX?
BZT5250H-B15-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B15-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-B15-QX?
For technical support, including BZT5250H-B15-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B15-QX requirements.
6.How does Aetrix verify that BZT5250H-B15-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B15-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-B15-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-B15-QX?
All BZT5250H-B15-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B15-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-B15-QX part is unused and in its original packaging.
Return procedure for BZT5250H-B15-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT5250H-B15-QX Tags
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