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Nexperia USA Inc. BZT5250H-B5V1-QX
- Part No.:
- BZT5250H-B5V1-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B5V1-QX.pdf
- Description:
- DIODE ZENER 5.1V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:3,915
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Product details
Overview
BZT5250H-B5V1-QX from Nexperia is a low-current Zener diode in SOD123F package, providing precise 5.1 V voltage regulation at 50 µA test current, with ±2 % tolerance, 500 Ω differential resistance at 5 mA, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZT5250H-B5V1-QX datasheet, BZT5250H-B5V1-QX pinout, BZT5250H-B5V1-QX application, or BZT5250H-B5V1-QX equivalent, this device serves as a stable, low-bias reference in battery-powered sensor nodes, automotive body control modules, and precision analog monitoring circuits where leakage-sensitive operation and thermal robustness are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal working voltage of 5.1 V, specified at IZ = 50 µA - enabling ultra-low quiescent current regulation ideal for always-on subsystems. Its temperature coefficient of −2.0 mV/K ensures predictable drift over −55 °C to +150 °C ambient range.
The device features intentional minor leakage optimization per AN90031 for fast switching transients and reduced noise coupling, while maintaining 830 mW total power dissipation on a 1 cm² cathode pad and 150 K/W junction-to-solder-point thermal resistance for reliable thermal management in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.00 V to 5.20 V at IZ = 50 µA - tight ±2 % tolerance enables accurate biasing without trimming in cost-sensitive automotive ECUs. |
| Differential Resistance (rdiff) | 500 Ω max at IZ = 5 mA - low dynamic impedance maintains regulation stability under small-signal load variations. |
| Reverse Current (IR) | 3.0 µA max at VR = 3.0 V - minimal leakage preserves battery life in sleep-mode sensor interfaces. |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - supports bidirectional clamping or dual-role protection in mixed-signal signal paths. |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on 1 cm² cathode pad - sufficient headroom for transient surges in under-hood environments. |
| Junction Temperature (Tj) | 150 °C maximum - rated for continuous operation in engine bay and powertrain control units. |
| AEC-Q101 Qualified | Stress-tested per Automotive Electronics Council standard - validated for mission-critical automotive applications including lighting control and CAN node voltage references. |
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 - polarity must be observed to avoid forward conduction during regulation. |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction enabling controlled breakdown at 5.1 V. |
Key Features
| Feature | Design Value |
|---|---|
| Low-test-current specification | Rated at IZ = 50 µA - enables stable regulation in micro-power systems where traditional 5 mA Zeners draw excessive current. |
| AEC-Q101 qualification | Qualified for automotive Grade 1 (−40 °C to +125 °C) operation - meets reliability requirements for non-safety-critical vehicle subsystems. |
| Optimized leakage profile | Intentional minor rise in IR per AN90031 - reduces switching noise and improves transient response in feedback loops. |
| Thermal performance | Rth(j-sp) = 150 K/W - allows direct thermal coupling to copper pour for enhanced power handling in high-density layouts. |
| Small-form-factor SMD | SOD123F footprint compatible with standard 0805 reflow profiles - supports automated assembly and space-constrained modules. |
Applications
| Automotive Body Control Unit (BCU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage reference for LIN bus transceiver biasing and microcontroller reset circuitry in door module ECUs. IC Role / Device Role / Timing Role: Zener regulator providing stable 5.1 V supply to analog comparators and POR circuits. Use Value: ±2 % tolerance and −2.0 mV/K TC ensure reset threshold remains within spec across temperature, preventing spurious reboots. |
Use Scenario: Precision reference for 12-bit ADC front-end in smart pressure transmitter with 4–20 mA loop power. IC Role / Device Role / Timing Role: Low-drift voltage clamp establishing reference point for ratiometric sensor excitation. Use Value: 500 Ω rdiff minimizes loading error on op-amp buffer output, preserving measurement linearity. |
| Portable Medical Wearable | Smart Lighting Driver Feedback |
Use Scenario: Battery-voltage monitor in ECG patch using coin-cell power and ultra-low-power MCU. IC Role / Device Role / Timing Role: Low-current Zener supplying regulated bias to comparator detecting end-of-life battery voltage. Use Value: 3.0 µA IR at 3.0 V extends usable battery life beyond 12 months in standby mode. |
Use Scenario: Output voltage sense reference in constant-current LED driver for automotive interior lighting. IC Role / Device Role / Timing Role: Regulation node feeding error amplifier in isolated flyback feedback path. Use Value: Optimized leakage behavior suppresses high-frequency noise coupling into PWM control loop, reducing LED flicker. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5221BS-7-F | Same 5.1 V nominal, ±5 % tolerance, SOD-123 package, but rated at IZ = 20 mA - higher test current increases dynamic impedance to 600 Ω. | Less suitable for sub-100 µA bias networks; better for higher-current shunt regulators. | Select when higher surge immunity is needed and system can support 20 mA test current. |
| Vishay BZX384-B5V1 | 5.1 V, ±2 %, SOD-323 package (1.7 mm × 1.3 mm), 400 mW Ptot, rdiff = 600 Ω - smaller footprint but lower power rating and higher thermal resistance. | Preferred for space-constrained consumer IoT, not recommended for under-hood automotive due to lower Ptot and no AEC-Q101 claim. | Select only for non-automotive, low-power portable designs where board area is primary constraint. |
Compared with MMBZ5221BS-7-F and BZX384-B5V1, the BZT5250H-B5V1-QX uniquely combines AEC-Q101 qualification, 50 µA test current specification, and 830 mW power capability - making it the sole choice for thermally demanding, safety-aware automotive Zener applications requiring long-term stability at minimal bias.
Availability
BZT5250H-B5V1-QX is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor modules, and portable medical devices requiring stable component supply with full traceability and long-lifecycle support.
Supply support for BZT5250H-B5V1-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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
The BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, designed specifically for low-current, high-stability voltage reference and regulation in harsh-environment automotive and industrial control systems.
FAQ
What is the maximum reverse voltage this Zener can regulate before breakdown?
The BZT5250H-B5V1-QX has a nominal Zener voltage of 5.1 V, with guaranteed minimum and maximum values of 5.00 V and 5.20 V respectively at IZ = 50 µA. It begins regulating in reverse breakdown within this band and is not rated for stable operation above 5.20 V - exceeding this risks uncontrolled conduction or thermal runaway without current limiting.
Can this diode be used in forward-bias mode as a standard rectifier?
No. While the device exhibits a forward voltage of ≤ 0.9 V at 10 mA, its design and characterization focus exclusively on reverse-bias Zener operation. Forward conduction is not tested or guaranteed for repetitive current handling, and its 200 mA absolute maximum forward current rating applies only to short pulses - not sustained rectification duty.
How does the "B" suffix in BZT5250H-B5V1-QX affect performance versus "C" variants?
The "B" suffix denotes ±2 % tolerance on Zener voltage, whereas "C" indicates approximately ±5 %. For BZT5250H-B5V1-QX, this means VZ is tightly controlled between 5.00 V and 5.20 V at 50 µA, delivering higher accuracy in reference-sensitive circuits like ADC biasing or reset threshold generation compared to the wider C-series band.
Is the SOD123F package compatible with standard reflow soldering profiles?
Yes. Nexperia specifies reflow soldering as the only recommended method for SOD123F. The package supports JEDEC J-STD-020-compliant peak temperatures up to 260 °C, with thermal characteristics validated on FR4 PCBs using the footprint shown in Figure 10 - including 1.2 mm × 1.1 mm solder lands and defined paste deposit geometry.
BZT5250H-B5V1-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):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 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-B5V1-QX FAQ
1.How can I place an order for BZT5250H-B5V1-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B5V1-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-B5V1-QX reliable?
The price and inventory of BZT5250H-B5V1-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-B5V1-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-B5V1-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B5V1-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B5V1-QX?
BZT5250H-B5V1-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B5V1-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-B5V1-QX?
For technical support, including BZT5250H-B5V1-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B5V1-QX requirements.
6.How does Aetrix verify that BZT5250H-B5V1-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B5V1-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-B5V1-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-B5V1-QX?
All BZT5250H-B5V1-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B5V1-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-B5V1-QX part is unused and in its original packaging.
Return procedure for BZT5250H-B5V1-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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