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Nexperia USA Inc. BZT5250H-B1V8-QX
- Part No.:
- BZT5250H-B1V8-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B1V8-QX.pdf
- Description:
- DIODE ZENER 1.8V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:4,733
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Product details
Overview
BZT5250H-B1V8-Q from Nexperia is a low-current Zener diode in SOD123F package, providing precise 1.8 V voltage regulation at 50 µA test current, with ±2 % tolerance, 600 Ω differential resistance at IZ = 50 µA, and AEC-Q101 qualification for automotive use.
For engineers reviewing the BZT5250H-B1V8-Q datasheet, BZT5250H-B1V8-Q pinout, BZT5250H-B1V8-Q application, or BZT5250H-B1V8-Q equivalent, this device is selected for ultra-low-bias voltage reference, battery-powered sensor biasing, and ESD-protected logic-level clamping where tight tolerance and low leakage are critical.
Technical Context
This Zener operates in reverse breakdown mode with nominal VZ = 1.8 V at IZ = 50 µA, exhibiting a negative temperature coefficient of −3.5 mV/K and typical capacitance of 220 pF at 0 V. Its low test current enables stable regulation in micro-power circuits.
The device features intentional minor leakage optimization per AN90031 for fast switching and noise reduction, and achieves thermal resistance Rth(j-a) = 330 K/W on FR4 PCB - enabling reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (nominal) | 1.8 V at IZ = 50 µA - sets precise low-voltage reference point for bias networks |
| Tolerance | ±2 % - ensures tight regulation across production lots without trimming |
| rdiff | 600 Ω at IZ = 50 µA - defines dynamic impedance affecting load regulation error |
| SZ | −3.5 mV/K - quantifies voltage drift over temperature; enables predictable compensation |
| Ptot | 830 mW at Tamb ≤ 25 °C - supports continuous operation under moderate power dissipation |
| IR @ VR = 1.0 V | 1.0 µA max - confirms low leakage critical for battery runtime in always-on circuits |
| Cd | 220 pF at f = 1 MHz, VR = 0 V - determines high-frequency noise filtering capability |
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) | Connected to regulated output node; marking bar identifies this terminal |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low test current operation | Specified at 50 µA - enables stable regulation in nanoamp-level bias chains |
| AEC-Q101 qualification | Qualified for automotive applications - meets stress-test requirements for reliability in harsh environments |
| Optimized leakage profile | Intentional minor rise per AN90031 - reduces switching noise and improves transient response |
| Thermal robustness | Rth(j-sp) = 150 K/W - allows efficient heat transfer to solder pad for sustained 830 mW dissipation |
| Small footprint | SOD123F package - saves board space while maintaining manufacturability and thermal margin |
Applications
| Automotive Cabin Sensor Biasing | Portable Medical Device Reference |
|---|---|
|
Use Scenario: Providing stable 1.8 V bias to MEMS pressure sensor front-end in vehicle cabin modules operating from 12 V supply via resistive divider. IC Role / Device Role / Timing Role: Zener voltage reference establishing precision analog input common-mode level for ADC driver stage. Use Value: ±2 % tolerance and −3.5 mV/K TC ensure <±15 mV total drift over −40 °C to +125 °C, meeting ASIL-B functional safety margin. |
Use Scenario: Generating low-noise 1.8 V reference for ultra-low-power glucose meter analog front-end powered by coin cell. IC Role / Device Role / Timing Role: Low-current Zener regulator supplying reference voltage to op-amp and comparator circuits. Use Value: 50 µA test current and 1.0 µA max leakage at 1.0 V enable >5-year battery life while maintaining 1.8 V accuracy within ±36 mV. |
| IoT Node Logic-Level Clamping | Industrial PLC Input Protection |
|
Use Scenario: Clamping 1.8 V I/O lines in Bluetooth LE sensor node against ESD and overvoltage transients. IC Role / Device Role / Timing Role: Bidirectional transient suppressor leveraging Zener breakdown and forward conduction. Use Value: 220 pF capacitance and fast leakage-optimized response limit signal distortion below 10 Mbps data rate while passing IEC 61000-4-2 Level 4. |
Use Scenario: Regulating and protecting 1.8 V auxiliary supply rail feeding isolated digital inputs in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Precision shunt regulator stabilizing local LDO input under varying load and temperature. Use Value: 600 Ω differential resistance and 830 mW power rating maintain <10 mV output variation across 0–10 mA load step, ensuring deterministic input threshold behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B1V8 | Same 1.8 V, ±2 %, but SOD323 package (smaller); rdiff = 700 Ω at 50 µA; no AEC-Q101 qualification | Limited to consumer-grade portable devices; unsuitable for automotive due to qualification gap | Select only when board space is constrained and automotive compliance is not required |
| MMSZ4678 | 1.8 V, ±5 % tolerance; rdiff = 1000 Ω at 50 µA; Ptot = 350 mW; no leakage optimization or AEC-Q101 | Higher regulation error and lower power handling; used in cost-sensitive non-automotive designs | Acceptable for basic voltage clamping where ±5 % tolerance and 350 mW suffice |
Compared with BZT5250H-B1V8-Q, BZX384-B1V8 trades automotive qualification and thermal margin for smaller size, while MMSZ4678 sacrifices tolerance, dynamic impedance, and power rating for lower cost - making the BZT5250H-B1V8-Q optimal for regulated, high-reliability 1.8 V references in automotive and industrial edge nodes.
Availability
BZT5250H-B1V8-Q is available at Aetrix Electronics and suitable for automotive cabin electronics, portable medical instrumentation, IoT wireless sensor nodes, and industrial PLC auxiliary supplies requiring stable component supply and AEC-Q101 assurance.
Supply support for BZT5250H-B1V8-Q 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 advanced packaging.
The BZT5250H-Q series belongs to Nexperia's AEC-Q101-qualified Zener portfolio, designed specifically for low-current voltage regulation in space-constrained, thermally demanding automotive and industrial systems.
FAQ
What is the maximum reverse voltage before breakdown for BZT5250H-B1V8-Q?
The nominal Zener voltage is 1.8 V at 50 µA test current, with guaranteed range of 1.76 V to 1.84 V. Breakdown occurs sharply within this band; operation above 1.84 V under regulation conditions risks exceeding specified differential resistance and thermal limits.
Can BZT5250H-B1V8-Q be used in forward conduction mode?
Yes - its forward voltage is rated ≤ 0.9 V at 10 mA, making it suitable as a low-drop clamp or ESD protection diode in forward bias. However, its primary design intent and characterization are for reverse-biased Zener regulation at 50 µA.
How does the AEC-Q101 qualification impact board-level reliability?
AEC-Q101 qualification confirms successful completion of high-temperature operating life, temperature cycling, and mechanical shock tests - ensuring the device sustains electrical parameters and bond integrity over 15-year automotive service life under −40 °C to +125 °C ambient conditions.
Is the SOD123F package compatible with standard reflow profiles?
Yes - Nexperia specifies reflow soldering as the only recommended method, with footprint dimensions published for standard lead-free profiles (peak 260 °C). The 1.1 mm height and flat leads ensure coplanarity and minimize tombstoning risk on 0.4 mm pitch pads.
BZT5250H-B1V8-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):
- 1.8 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 7.5 µA @ 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-B1V8-QX FAQ
1.How can I place an order for BZT5250H-B1V8-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B1V8-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-B1V8-QX reliable?
The price and inventory of BZT5250H-B1V8-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-B1V8-QX is usually 5 days.
3.What payment methods are accepted for BZT5250H-B1V8-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B1V8-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B1V8-QX?
BZT5250H-B1V8-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B1V8-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-B1V8-QX?
For technical support, including BZT5250H-B1V8-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B1V8-QX requirements.
6.How does Aetrix verify that BZT5250H-B1V8-QX is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B1V8-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-B1V8-QX meets industry standards.
7.What is the process for return or replacement of BZT5250H-B1V8-QX?
All BZT5250H-B1V8-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B1V8-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-B1V8-QX part is unused and in its original packaging.
Return procedure for BZT5250H-B1V8-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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