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Nexperia USA Inc. BZT5250H-B8V2X
- Part No.:
- BZT5250H-B8V2X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT5250H-B8V2X.pdf
- Description:
- DIODE ZENER 8.2V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:8,086
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Product details
Overview
BZT5250H-B8V2X from Nexperia is a low-current Zener diode in SOD123F package, providing 8.2 V nominal regulation at 50 µA test current with ±2 % tolerance, 80 Ω differential resistance at 5 mA, and 6.2 mV/K temperature coefficient - used for precision biasing and voltage reference in portable battery-powered sensor nodes and microcontroller reset circuits.
For engineers reviewing the BZT5250H-B8V2X datasheet, BZT5250H-B8V2X pinout, BZT5250H-B8V2X application, or BZT5250H-B8V2X equivalent, key selection criteria include low-test-current regulation stability, thermal resistance (150 K/W junction-to-solder-point), cathode-anode polarity marking, and SOD123F footprint compatibility with high-density PCB layouts.
Technical Context
This Zener operates in reverse breakdown mode with specified VZ = 8.04–8.36 V at IZ = 50 µA, exhibiting a positive temperature coefficient of +3.2 mV/K and low leakage (≤0.1 µA at 6.2 V). Its differential resistance drops to 80 Ω at 5 mA, supporting stable regulation under light-load conditions.
The device uses an optimized silicon process with intentional minor leakage rise per AN90031 to reduce switching noise and improve transient response - critical for low-power analog front-ends and ADC reference stabilization where EMI sensitivity is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.04 V to 8.36 V at IZ = 50 µA - defines precise low-bias reference point for 3.3 V/5 V system rails |
| Tolerance | ±2 % - enables tight voltage margin control in reset circuitry without post-calibration |
| Differential Resistance (rdiff) | 80 Ω at IZ = 5 mA - ensures <16 mV output shift per 0.2 mA load variation, critical for stable sensor biasing |
| Temperature Coefficient (SZ) | +3.2 mV/K - compensates typical MCU supply drift over –40 °C to +85 °C ambient range |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - allows use as low-drop clamp in bidirectional signal protection paths |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on 1 cm² cathode pad - supports short-duration surge handling in brown-out detection |
| Junction-to-Solder-Point Rth | 150 K/W - enables thermal coupling to ground plane for consistent regulation across temperature cycling |
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 regulation | Specified at 50 µA - enables direct use with nanoamp-level bias sources in IoT endpoint sleep modes |
| Optimized leakage profile | Intentional minor IR rise per AN90031 - reduces high-frequency noise in precision analog references |
| Thermal performance | Rth(j-sp) = 150 K/W - maintains <±0.5 % VZ shift over full industrial temperature range with standard FR4 layout |
| Small-form-factor SMD | SOD123F footprint - fits 0805-equivalent land pattern, enabling placement near IC power pins for local decoupling |
| Two-tolerance series | ±2 % (B-series) and ~±5 % (C-series) - supports cost-sensitive vs. precision-tier BOM segmentation |
Applications
| Microcontroller Reset Circuit | Low-Power Sensor Biasing |
|---|---|
Use Scenario: Generating clean, temperature-stable reset threshold for ARM Cortex-M0+ MCUs operating from 3.3 V supply. IC Role / Device Role / Timing Role: Zener diode provides accurate 8.2 V reference to comparator input, triggering reset when VCC drops below 2.7 V. Use Value: ±2 % VZ tolerance and +3.2 mV/K coefficient ensure reset threshold remains within 2.68–2.72 V across –40 °C to +85 °C. |
Use Scenario: Supplying stable bias current to MEMS pressure sensor bridge in battery-operated environmental monitor. IC Role / Device Role / Timing Role: Functions as low-current voltage reference to set constant-current source for Wheatstone bridge excitation. Use Value: Regulation at 50 µA enables direct connection to LDO output without additional divider, reducing quiescent current by 12 µA vs. resistor-zener solution. |
| ADC Reference Stabilization | USB-C Port Voltage Clamp |
Use Scenario: Improving accuracy of 12-bit SAR ADC in portable medical pulse oximeter with single-cell Li-ion supply. IC Role / Device Role / Timing Role: Zener stabilizes internal bandgap reference node against supply ripple and temperature drift. Use Value: 80 Ω rdiff limits reference voltage perturbation to <0.4 LSB under 100 µA dynamic load shifts during conversion cycles. |
Use Scenario: Protecting USB-C CC line transceiver from ESD-induced overvoltage during hot-plug events. IC Role / Device Role / Timing Role: Acts as fast-responding shunt clamp between CC pin and ground, triggered above 8.2 V. Use Value: Low 150 K/W Rth(j-sp) allows dissipation of 40 W non-repetitive surges (100 µs) without thermal runaway in compact layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52-C8V2 | ±5 % tolerance, higher rdiff (100 Ω), same SOD123F package | Acceptable for non-critical biasing where 8.2 V ±0.41 V suffices | Select when cost priority outweighs regulation accuracy and thermal stability |
| MMSZ5236B | Same 8.2 V nominal, ±5 %, but SOD-123 package (not SOD123F); 100 Ω rdiff; 500 mW Ptot | Compatible footprint only with adapter; lower power rating limits surge handling | Choose only if legacy MMSZ design reuse is required and thermal derating is acceptable |
Compared with BZT5250H-B8V2X, BZT52-C8V2 trades 2.5× looser tolerance and higher impedance for lower unit cost, while MMSZ5236B offers identical nominal voltage but lacks the optimized leakage/noise profile and thermal performance needed for precision analog systems.
Availability
BZT5250H-B8V2X is available at Aetrix Electronics and suitable for microcontroller reset circuits, low-power sensor biasing, ADC reference stabilization, and USB-C port voltage clamping requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BZT5250H-B8V2X 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 battery-constrained and noise-sensitive applications where regulation stability at microamp bias currents is essential.
FAQ
What is the maximum reverse voltage before breakdown for BZT5250H-B8V2X?
The device exhibits sharp reverse breakdown at 8.04–8.36 V when tested at 50 µA. Below 7.5 V, reverse current remains ≤0.1 µA; no defined "maximum non-breakdown voltage" is specified, as Zener operation requires controlled reverse conduction.
Can BZT5250H-B8V2X be used in place of a 5.1 V Zener for overvoltage protection?
No - its nominal Zener voltage is 8.2 V, not 5.1 V. Substituting it would raise the clamping threshold by 3.1 V, potentially allowing damaging overvoltage to reach downstream circuitry. Use BZT5250H-B5V1 for 5.1 V applications.
Is the SOD123F package compatible with standard SOD-123 reflow footprints?
Yes - SOD123F shares identical 2.6 mm × 1.6 mm body dimensions and terminal spacing with SOD-123, and Nexperia's recommended reflow footprint (2.9 mm × 1.2 mm solder lands) aligns with IPC-7351B medium density standards.
Does BZT5250H-B8V2X require a series resistor in all applications?
Yes - a current-limiting resistor is mandatory to restrict reverse current to within rated limits (max 200 mA forward, 50 µA–5 mA Zener test range). For 3.3 V supply regulation, a 100 kΩ resistor sets IZ ≈ 50 µA; omitting it risks thermal destruction.
BZT5250H-B8V2X 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):
- 8.2 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6.2 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-B8V2X FAQ
1.How can I place an order for BZT5250H-B8V2X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT5250H-B8V2X 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-B8V2X reliable?
The price and inventory of BZT5250H-B8V2X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT5250H-B8V2X is usually 5 days.
3.What payment methods are accepted for BZT5250H-B8V2X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT5250H-B8V2X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT5250H-B8V2X?
BZT5250H-B8V2X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT5250H-B8V2X 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-B8V2X?
For technical support, including BZT5250H-B8V2X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT5250H-B8V2X requirements.
6.How does Aetrix verify that BZT5250H-B8V2X is sourced from the original manufacturer or authorized distributors?
All BZT5250H-B8V2X 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-B8V2X meets industry standards.
7.What is the process for return or replacement of BZT5250H-B8V2X?
All BZT5250H-B8V2X units undergo pre-shipment inspection (PSI). If there is an issue with BZT5250H-B8V2X, 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-B8V2X part is unused and in its original packaging.
Return procedure for BZT5250H-B8V2X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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