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Nexperia USA Inc. BZT52H-B8V2-QX
- Part No.:
- BZT52H-B8V2-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-B8V2-QX.pdf
- Description:
- DIODE ZENER 8.2V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:9,253
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Product details
Overview
BZT52H-B8V2-QX from Nexperia is a ±2 % tolerance Zener diode in SOD123F package, rated for 8.2 V nominal breakdown voltage at IZ = 5 mA, with 830 mW total power dissipation and AEC-Q101 qualification for automotive voltage regulation and reference applications.
For engineers reviewing the BZT52H-B8V2-QX datasheet, BZT52H-B8V2-QX pinout, BZT52H-B8V2-QX application, or BZT52H-B8V2-QX equivalent, this page delivers verified Zener voltage, differential resistance, temperature coefficient, reverse current limits, and thermal resistance values critical for precision biasing, overvoltage clamping, and stable reference design in harsh-environment systems.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable 8.2 V reference across load variations, with a typical differential resistance of 80 Ω at 5 mA test current and a positive temperature coefficient of +3.2 mV/K - enabling predictable drift compensation in temperature-sensitive circuits.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it delivers 830 mW power handling under ambient ≤25 °C with cathode pad thermal enhancement (1 cm²), and supports non-repetitive surge currents up to 4.0 A (100 μs pulse) without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.04 V to 8.36 V at IZ = 5 mA - defines tight regulation window for precision reference circuits |
| Differential Resistance (rdif) | 80 Ω max at IZ = 5 mA - determines output impedance and load regulation error |
| Reverse Current (IR) | ≤0.7 μA at VR = 6.56 V - ensures low leakage in standby or high-impedance bias networks |
| Temperature Coefficient (SZ) | +3.2 mV/K to +6.2 mV/K - enables predictable voltage drift correction in wide-temperature designs |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C with 1 cm² cathode pad - sets maximum continuous DC or pulsed power envelope |
| Junction-to-Ambient Rth(j-a) | 330 K/W in free air - informs thermal derating requirements for enclosed or convection-limited layouts |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - defines forward conduction loss when used in dual-direction protection schemes |
Pinout & Package
SOD123F surface-mount plastic package: 2-terminal, flat lead, small outline (3.6 mm × 1.7 mm × 1.0 mm), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker (bar) identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-bias current flows from cathode to anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 standards |
| ±2 % Zener tolerance | Enables tighter system-level voltage margin control than ±5 % variants, reducing calibration overhead |
| 830 mW power rating | Supports higher-current regulation (up to ~100 mA at 8.2 V) without external heatsinking on standard FR4 |
| SOD123F footprint | Compatible with automated reflow assembly; occupies only 6.1 mm² board area for space-constrained modules |
| Low thermal resistance (Rth(j-sp) = 150 K/W) | Enables efficient heat transfer to solder pad, improving long-term stability under sustained power dissipation |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 8.2 V reference for microcontroller ADC input scaling and sensor excitation in door module ECUs. IC Role / Device Role / Timing Role: Zener reference diode supplying precise bias voltage to op-amp gain stages and analog front-end circuitry. Use Value: Maintains <±10 mV output variation over -40 °C to +125 °C ambient due to AEC-Q101 thermal validation and +3.2 mV/K coefficient. |
Use Scenario: Clamping and regulating supply rails for 4–20 mA transmitter ICs in hazardous-area pressure transmitters. IC Role / Device Role / Timing Role: Overvoltage protection and local voltage reference for loop-powered analog signal conditioning ASICs. Use Value: Limits transient surges to <8.4 V while sustaining 830 mW dissipation during 100 ms line faults, per IEC 61000-4-5 compliance testing. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Biasing |
Use Scenario: Secondary-side voltage reference in isolated flyback converters for USB-C PD adapters. IC Role / Device Role / Timing Role: Precision Zener element in optocoupler feedback network controlling primary-side PWM duty cycle. Use Value: Delivers ±0.16 V regulation accuracy (±2 % of 8.2 V) across production lot, minimizing output voltage variance without trimming. |
Use Scenario: Stable bias generation for photodiode transimpedance amplifiers in portable ultrasound probe front-ends. IC Role / Device Role / Timing Role: Low-noise voltage reference source ensuring consistent gain and offset calibration across battery-operated devices. Use Value: Achieves <0.5 μA reverse leakage at 6.56 V, preventing signal corruption in high-impedance (>1 GΩ) sensing paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-C8V2-Q | ±5 % tolerance (7.7 V–8.7 V), higher max IR (1 μA at VR = 6.56 V), same SOD123F package | Acceptable where system-level calibration compensates wider VZ spread; less suitable for uncalibrated precision references | Select for cost-sensitive automotive sub-systems where post-assembly trimming is available |
| MMSZ5231B-TP | ±5 % tolerance (7.7 V–8.7 V), 500 mW Ptot, SOD-123 package (not AEC-Q101 qualified) | Limited to commercial-temperature industrial or consumer use; lacks automotive reliability validation | Choose only for non-automotive, low-power (<60 mA) applications with relaxed thermal and lifetime requirements |
Compared with BZT52H-B8V2-QX, the C-grade variant trades voltage precision for broader tolerance and slightly higher leakage, while MMSZ5231B-TP sacrifices both automotive qualification and power capability - making BZT52H-B8V2-QX the sole choice for AEC-Q101-compliant 8.2 V regulation at full 830 mW.
Availability
BZT52H-B8V2-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor transmitters, isolated power adapter feedback loops, and medical diagnostic biasing requiring stable component supply with guaranteed AEC-Q101 compliance and traceable lot history.
Supply support for BZT52H-B8V2-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 consumer markets.
The BZT52H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for robust voltage reference and regulation in automotive subsystems operating across extended temperature ranges.
FAQ
What is the maximum continuous reverse current this Zener can sustain at 8.2 V?
The BZT52H-B8V2-QX is not rated for continuous reverse current at its Zener voltage; instead, it specifies a maximum DC power dissipation of 830 mW at Tamb ≤ 25 °C. At 8.2 V, this corresponds to ~101 mA average current. Operation above this requires thermal derating per the 330 K/W junction-to-ambient resistance and ambient temperature.
Does the SOD123F package support hand-soldering repair?
No - the datasheet explicitly states "Reflow soldering is the only recommended soldering method" for the SOD123F package. Hand-soldering risks thermal damage due to localized overheating and insufficient preheat; hot-air rework with controlled ramp/soak profiles and IR preheating is required for reliable repair.
How does the +3.2 mV/K temperature coefficient affect long-term stability in a 125 °C environment?
From 25 °C to 125 °C (ΔT = 100 K), the Zener voltage increases by approximately +0.32 V (3.2 mV/K × 100 K), shifting the nominal 8.2 V rating to ~8.52 V. This predictable positive drift allows system designers to compensate via resistor divider ratios or firmware calibration tables without requiring active temperature sensing.
Can this diode be used in parallel for higher power handling?
No - Zener diodes exhibit negative dynamic resistance characteristics and cannot be reliably paralleled without individual ballast resistors. Even with matched units, minor VZ tolerances cause current hogging, leading to thermal runaway. For >830 mW requirements, select a higher-power Zener or implement active regulation with a pass transistor.
BZT52H-B8V2-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT52H-Q
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±1.95%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 700 nA @ 5 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
BZT52H-B8V2-QX FAQ
1.How can I place an order for BZT52H-B8V2-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-B8V2-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 BZT52H-B8V2-QX reliable?
The price and inventory of BZT52H-B8V2-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-B8V2-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-B8V2-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-B8V2-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-B8V2-QX?
BZT52H-B8V2-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-B8V2-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 BZT52H-B8V2-QX?
For technical support, including BZT52H-B8V2-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-B8V2-QX requirements.
6.How does Aetrix verify that BZT52H-B8V2-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-B8V2-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 BZT52H-B8V2-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-B8V2-QX?
All BZT52H-B8V2-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-B8V2-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 BZT52H-B8V2-QX part is unused and in its original packaging.
Return procedure for BZT52H-B8V2-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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