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Nexperia USA Inc. BZT52H-A5V6X
- Part No.:
- BZT52H-A5V6X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-A5V6X.pdf
- Description:
- DIODE ZENER 5.6V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:3,112
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Product details
Overview
BZT52H-A5V6X from Nexperia is a ±1 % tolerance Zener voltage regulator diode in SOD123F package, rated for 5.6 V nominal breakdown voltage at 5 mA, 400 Ω max differential resistance, and 830 mW total power dissipation at 25 °C ambient. It serves as a precision reference or low-power voltage clamp in power supply feedback paths, sensor biasing circuits, and overvoltage protection stages.
For engineers reviewing the BZT52H-A5V6X datasheet, BZT52H-A5V6X pinout, BZT52H-A5V6X application, or BZT52H-A5V6X equivalent, this page delivers verified Zener parameters including temperature coefficient (−2.0 to +2.5 mV/K), reverse current (≤1 μA at 4.5 V), forward voltage (≤0.9 V at 10 mA), thermal resistance (150 K/W junction-to-solder point), and non-repetitive surge capability (6.0 A, 100 μs).
Technical Context
This device operates in reverse-bias breakdown mode with tightly controlled VZ = 5.54–5.66 V at IZ = 5 mA, exhibiting low dynamic impedance (400 Ω max) and minimal temperature drift (SZ = −2.0 to +2.5 mV/K). Its SOD123F package enables surface-mount integration with defined thermal path to PCB solder pad.
Designed for stable DC reference generation under low-current conditions, it supports operation across −65 °C to +150 °C ambient, with junction temperature limited to 150 °C and storage temperature matching that range. Reverse leakage remains ≤1 μA up to 4.5 V, ensuring high-impedance regulation stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VZ) | 5.54 V to 5.66 V at 5 mA - defines precise clamping threshold for 5 V rail stabilization |
| Tolerance | ±1 % - enables high-accuracy voltage referencing without post-calibration |
| Differential Resistance (rdif) | ≤400 Ω - ensures minimal output voltage shift under load current variation |
| Max Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - sets upper limit for continuous DC power handling on standard FR4 PCB |
| Forward Voltage (VF) | ≤0.9 V at 10 mA - confirms low-loss conduction in forward-biased protection configurations |
| Temperature Coefficient (SZ) | −2.0 to +2.5 mV/K - quantifies VZ drift per degree, critical for wide-temperature designs |
| Reverse Current (IR) | ≤1 μA at VR = 4.5 V - guarantees high-impedance regulation below breakdown |
Pinout & Package
SOD123F is a 2-pin surface-mount plastic package with cathode-marked flat lead geometry; dimensions are 3.6 mm × 1.7 mm × 1.0 mm (L × W × H), featuring tin-plated copper leads and optimized thermal pad for cathode-side heat transfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; primary heat path to PCB |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes reverse-bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±1 % VZ tolerance | Enables direct replacement in precision 5.6 V reference circuits without trimming resistors |
| 830 mW power rating | Supports sustained 5.6 V regulation at up to ~148 mA (P/V) on standard FR4 with 1 cm² cathode pad |
| SOD123F footprint | Compatible with automated reflow assembly; occupies <2.5 mm² board area; no through-hole requirement |
| −65 °C to +150 °C operating range | Validates use in industrial control, automotive under-hood auxiliary circuits, and outdoor electronics |
| 6.0 A non-repetitive surge rating | Withstands transient overvoltage events (100 μs, 25 °C) without degradation in clamp performance |
Applications
| Power Supply Feedback | Sensor Bias Reference |
|---|---|
Use Scenario: Stabilizing output voltage of isolated flyback or buck converter via optocoupler-coupled feedback loop. IC Role / Device Role: Provides accurate 5.6 V reference to TL431 or similar shunt regulator input. Use Value: Maintains ±1 % output regulation across line/load/temperature with no external calibration. |
Use Scenario: Supplying stable excitation voltage to resistive temperature detectors (RTDs) or bridge-based pressure sensors. IC Role / Device Role: Acts as low-noise, low-drift voltage source replacing higher-cost bandgap references. Use Value: Delivers <1 μA leakage and <400 Ω dynamic impedance to minimize sensor measurement error. |
| Overvoltage Clamp | Logic-Level Protection |
Use Scenario: Protecting microcontroller GPIO pins from ESD or inductive kickback exceeding 5.6 V. IC Role / Device Role: Shunts excess energy to ground when reverse voltage exceeds VZ. Use Value: Responds within nanoseconds with 6.0 A surge capacity, preserving downstream IC integrity. |
Use Scenario: Level-shifting 3.3 V logic signals to interface with 5 V peripherals while limiting overshoot. IC Role / Device Role: Clamps positive transients to 5.6 V and conducts negative spikes via forward conduction. Use Value: Simultaneously limits both polarities using single-device bidirectional protection topology. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52C5V6 | ±5 % tolerance, 5.3–5.9 V range, 400 Ω rdif, same SOD123F package | Lower accuracy; suitable where cost outweighs precision | Select when ±5 % VZ meets system tolerance and budget constraints dominate |
| MMSZ5232BS | ±5 % tolerance, 5.3–5.9 V, 1000 Ω rdif, SOD-123 package (mechanically identical but non-optimized thermal pad) | Higher impedance reduces regulation stiffness; less robust thermal performance | Choose only if legacy MMSZ5232BS footprint compatibility is mandatory and thermal margin exists |
Compared with BZT52H-A5V6X, BZT52C5V6 trades accuracy for cost, while MMSZ5232BS sacrifices both precision and thermal reliability-making the A5V6X optimal for designs requiring tight regulation, low drift, and repeatable power handling.
Availability
BZT52H-A5V6X is available at Aetrix Electronics and suitable for power supply feedback networks, sensor biasing circuits, and overvoltage protection stages requiring stable component supply, consistent parametric performance, and long-term obsolescence management.
Supply support for BZT52H-A5V6X 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 BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for precision voltage regulation in space-constrained, thermally demanding SMT applications across consumer, industrial, and communications equipment.
FAQ
What is the maximum continuous reverse current this diode can handle at 25 °C?
The BZT52H-A5V6X is not rated for continuous reverse current; it operates in Zener breakdown mode. Its safe continuous operation is defined by power dissipation: at 25 °C ambient, it supports up to ~148 mA (830 mW ÷ 5.6 V) while maintaining VZ stability and staying within 150 °C junction limit. Exceeding this requires derating per thermal resistance data.
Does this part have automotive qualification?
No. The BZT52H-A5V6X is explicitly marked as non-automotive qualified in the revision history (Rev. 7, January 2023). Nexperia offers separate -Q qualified variants (e.g., BZT52H-Q series) for automotive applications; this part is intended for industrial, consumer, and communications use only.
How does the SOD123F package improve thermal performance over standard SOD-123?
The SOD123F features an enlarged cathode pad (1 cm² recommended) and optimized internal leadframe design, reducing Rth(j-sp) to 150 K/W versus ~200 K/W typical for legacy SOD-123. This allows 15–20 % higher power handling at the same board temperature and improves long-term reliability under thermal cycling.
Can this Zener be used in series to achieve higher reference voltages?
Yes, but with caution: series connection increases total dynamic impedance (sum of individual rdif) and temperature coefficients (additive). For BZT52H-A5V6X, two in series yield ~11.2 V ±1 %, but rdif rises to ≤800 Ω and SZ becomes −4.0 to +5.0 mV/K-requiring verification against load regulation and thermal stability requirements.
BZT52H-A5V6X 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):
- 5.6 V
- Tolerance:
- ±1%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 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
BZT52H-A5V6X FAQ
1.How can I place an order for BZT52H-A5V6X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-A5V6X 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-A5V6X reliable?
The price and inventory of BZT52H-A5V6X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-A5V6X is usually 5 days.
3.What payment methods are accepted for BZT52H-A5V6X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-A5V6X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-A5V6X?
BZT52H-A5V6X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-A5V6X 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-A5V6X?
For technical support, including BZT52H-A5V6X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-A5V6X requirements.
6.How does Aetrix verify that BZT52H-A5V6X is sourced from the original manufacturer or authorized distributors?
All BZT52H-A5V6X 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-A5V6X meets industry standards.
7.What is the process for return or replacement of BZT52H-A5V6X?
All BZT52H-A5V6X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-A5V6X, 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-A5V6X part is unused and in its original packaging.
Return procedure for BZT52H-A5V6X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52H-A5V6X Tags
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