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Nexperia USA Inc. BZT52H-A8V2X
- Part No.:
- BZT52H-A8V2X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-A8V2X.pdf
- Description:
- DIODE ZENER 8.2V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:9,938
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Product details
Overview
BZT52H-A8V2X from Nexperia is a precision Zener voltage regulator diode in SOD123F package, designed for low-power voltage reference and overvoltage protection in space-constrained PCBs. It delivers 8.2 V nominal Zener voltage at 5 mA test current, ±1 % tolerance, 80 Ω typical differential resistance, and operates up to 150 °C junction temperature - used in power supply feedback loops, sensor biasing, and microcontroller reset circuitry.
For engineers reviewing the BZT52H-A8V2X datasheet, BZT52H-A8V2X pinout, BZT52H-A8V2X application, or BZT52H-A8V2X equivalent, key selection criteria include Zener voltage accuracy, thermal stability (SZ = +3.2 mV/K), low reverse leakage (<0.7 μA at VR = 6.6 V), and SMD compatibility with reflow soldering per IPC-J-STD-020.
Technical Context
This device functions as a two-terminal shunt voltage regulator, maintaining stable output by conducting reverse current when applied voltage exceeds its 8.2 V Zener breakdown threshold. Its ±1 % tolerance and low 80 Ω dynamic impedance ensure tight regulation under varying load conditions.
Thermal performance is defined by Rth(j-a) = 330 K/W (free air) and Rth(j-sp) = 70 K/W (to cathode solder point), enabling reliable operation in ambient temperatures from –65 °C to +150 °C with 830 mW total power dissipation at Tamb ≤ 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V nominal at IZ = 5 mA; ensures precise reference for feedback networks |
| Tolerance | ±1 %; enables high-accuracy regulation without post-production trimming |
| Differential Resistance (rdif) | 80 Ω max at IZ = 5 mA; minimizes output voltage drift under load variation |
| Reverse Current (IR) | <0.7 μA at VR = 6.6 V; reduces standby power loss in battery-powered systems |
| Temperature Coefficient (SZ) | +3.2 mV/K at IZ = 5 mA; supports stable reference across industrial temperature range |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C on FR4 PCB; defines maximum continuous DC power handling |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA; allows use as polarity-sensitive clamp or ESD protection element |
Pinout & Package
SOD123F surface-mount plastic package: 2.7–3.6 mm length, 1.2–1.7 mm width, 0.55–0.70 mm height; optimized for automated placement and reflow soldering on standard FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode (K) | Connected to regulated output node; marking bar identifies cathode for correct orientation during assembly |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes shunt regulation path when Vin > VZ |
Key Features
| Feature | Design Value |
|---|---|
| High-precision voltage reference | ±1 % tolerance at 8.2 V enables direct replacement of trimmed references in cost-sensitive designs |
| Low thermal drift | +3.2 mV/K coefficient allows stable operation from –40 °C to +85 °C without external compensation |
| Robust surge capability | 40 W non-repetitive peak reverse power (tp = 100 μs) protects against transient overvoltage events |
| Compact SMD footprint | SOD123F package occupies <1.5 mm² board area - ideal for wearables, IoT sensors, and dense power modules |
| Industrial-grade reliability | Rated for 150 °C junction temperature and –65 °C to +150 °C storage, supporting extended-life deployments |
Applications
| Power Supply Feedback | Sensor Biasing |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback or buck-boost converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Shunt reference providing stable 8.2 V threshold to TL431 or comparator input. Use Value: Enables ±1 % output regulation accuracy without trimming resistors or secondary-side controllers. |
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) or bridge-based pressure sensors. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage source replacing higher-cost bandgap references. Use Value: Reduces sensor offset error by limiting reference drift to <±0.26 % over –40 °C to +85 °C. |
| Microcontroller Reset Circuit | Overvoltage Clamp |
Use Scenario: Generating clean reset signal for ARM Cortex-M or RISC-V MCUs during brown-out conditions. IC Role / Device Role / Timing Role: Zener clamping VCC to 8.2 V to trigger external reset IC or internal POR circuit. Use Value: Guarantees deterministic reset assertion at 8.2 V ±1 %, eliminating false resets due to supply ripple. |
Use Scenario: Protecting analog front-end inputs (e.g., ADC reference pins) from ESD or surge-induced overvoltage. IC Role / Device Role / Timing Role: Fast-acting shunt clamp absorbing transients exceeding 8.2 V before damage occurs. Use Value: Limits clamping voltage to 8.2 V ±1 % with sub-100 ns response, preserving signal integrity in 12-bit+ data acquisition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52C8V2 | ±5 % tolerance, 150 Ω rdif, SZ = +3.2 mV/K | Lower accuracy; suitable for non-critical biasing where cost dominates | Select when ±5 % regulation suffices and BOM cost reduction is prioritized over precision |
| MMSZ5231B | ±5 % tolerance, SOD-123 package, 8.2 V, Ptot = 500 mW | Lower power rating limits use in higher-current reference paths | Choose only for low-power (<10 mA) applications where 500 mW dissipation is sufficient |
Compared with BZT52H-A8V2X, BZT52C8V2 trades ±1 % accuracy for lower unit cost, while MMSZ5231B offers identical nominal voltage but reduced thermal margin and power handling - making the A8V2X optimal for precision industrial feedback and reset circuits demanding long-term stability.
Availability
BZT52H-A8V2X is available at Aetrix Electronics and suitable for power supply feedback, sensor biasing, and microcontroller reset circuits requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for BZT52H-A8V2X 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 delivering high-performance logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for automotive, industrial, and consumer markets.
The BZT52H series belongs to Nexperia's precision Zener diode product line, engineered specifically for high-accuracy voltage reference and protection in compact, thermally constrained SMD applications - emphasizing tight tolerance, low dynamic impedance, and robust surge immunity.
FAQ
What is the maximum continuous reverse current for BZT52H-A8V2X at 25 °C ambient?
The device supports up to 102 mA continuous reverse current at 25 °C ambient, calculated from its 830 mW power rating and 8.2 V Zener voltage (IZ(max) = Ptot/VZ). Derating is required above 25 °C per the thermal resistance curve - at 70 °C ambient, maximum usable current drops to ~65 mA to maintain Tj ≤ 150 °C.
Can BZT52H-A8V2X be used in place of a 7.5 V Zener diode?
No - BZT52H-A8V2X is specified only at 8.2 V nominal Zener voltage with ±1 % tolerance (8.11–8.29 V). Substituting it for a 7.5 V part would cause over-regulation, potentially damaging downstream circuitry or violating system voltage thresholds. Use BZT52H-A7V5 for 7.5 V applications.
Is the SOD123F package compatible with standard reflow profiles?
Yes - Nexperia specifies reflow soldering as the only recommended method for SOD123F. The package complies with IPC-J-STD-020 moisture sensitivity level 1 and withstands peak reflow temperatures up to 260 °C for ≤ 30 seconds. Footprint dimensions (2.9 × 1.6 mm pad layout) are provided in Figure 12 of the datasheet.
Does BZT52H-A8V2X meet automotive qualification standards?
No - this part is explicitly marked as non-automotive qualified per Revision 7 (January 2023) datasheet Section 13. It lacks AEC-Q101 stress testing and automotive-grade process controls. For automotive applications, Nexperia offers the BZT52H-Q series variants, which undergo full AEC-Q101 qualification and are documented separately.
BZT52H-A8V2X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT52H
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±1%
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52H-A8V2X FAQ
1.How can I place an order for BZT52H-A8V2X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-A8V2X 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-A8V2X reliable?
The price and inventory of BZT52H-A8V2X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-A8V2X is usually 5 days.
3.What payment methods are accepted for BZT52H-A8V2X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-A8V2X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-A8V2X?
BZT52H-A8V2X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-A8V2X 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-A8V2X?
For technical support, including BZT52H-A8V2X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-A8V2X requirements.
6.How does Aetrix verify that BZT52H-A8V2X is sourced from the original manufacturer or authorized distributors?
All BZT52H-A8V2X 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-A8V2X meets industry standards.
7.What is the process for return or replacement of BZT52H-A8V2X?
All BZT52H-A8V2X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-A8V2X, 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-A8V2X part is unused and in its original packaging.
Return procedure for BZT52H-A8V2X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52H-A8V2X Tags
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MM5Z5V1ST1G
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