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Nexperia USA Inc. BZT52H-A2V4X
- Part No.:
- BZT52H-A2V4X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-A2V4X.pdf
- Description:
- DIODE ZENER 2.4V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:3,008
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Product details
Overview
BZT52H-A2V4X from Nexperia is a ±1 % tolerance Zener diode in SOD123F package, providing precise 2.4 V voltage regulation at IZ = 5 mA with 400 Ω differential resistance and ≤0.9 V forward voltage at 10 mA. It delivers stable reference voltage for low-power biasing and overvoltage clamping in consumer power management circuits.
For engineers reviewing the BZT52H-A2V4X datasheet, BZT52H-A2V4X pinout, BZT52H-A2V4X application, or BZT52H-A2V4X equivalent, key selection criteria include Zener voltage tolerance (±1 %), thermal resistance (150 K/W junction-to-solder-point), non-repetitive surge capability (6.0 A), temperature coefficient (−3.5 to 0.0 mV/K), and SOD123F footprint compatibility with automated SMT assembly.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable 2.4 V reference across load variations, with specified test current of 5 mA and maximum differential resistance of 400 Ω ensuring minimal voltage drift under dynamic current conditions.
Its thermal design supports operation up to 150 °C junction temperature, and its SOD123F package provides 150 K/W junction-to-solder-point thermal resistance when mounted on FR4 PCB with 1 cm² cathode pad - critical for sustained power dissipation up to 830 mW at 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.37 V to 2.43 V at IZ = 5 mA - tight ±1 % tolerance enables high-accuracy voltage reference generation |
| Differential Resistance (rdif) | ≤400 Ω - low impedance ensures minimal output voltage variation under changing load current |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - low conduction loss supports efficient polarity protection and clamping |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Reverse Current (IZSM) | 6.0 A for tp = 100 μs - supports transient overvoltage suppression without failure |
| Temperature Coefficient (SZ) | −3.5 to 0.0 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius for thermal stability analysis |
| Reverse Current (IR) | ≤50 μA at VR = 1 V - low leakage preserves battery life in always-on monitoring circuits |
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 (K) | Cathode | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation |
| 2 (A) | Anode | Connected to ground or lower-potential rail; reverse-biased configuration enables Zener breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±1 % Zener voltage tolerance | Enables precision reference generation without post-production trimming in voltage monitor ICs and ADC bias networks |
| 830 mW total power dissipation | Supports continuous regulation in space-constrained 3.3 V/5 V supply rails without external heatsinking |
| 6.0 A non-repetitive surge rating | Withstands ESD and inductive kickback events in I/O protection circuits per IEC 61000-4-2 Level 4 |
| SOD123F package footprint | Compatible with standard 2.8 mm × 1.6 mm reflow solder land pattern - eliminates need for custom stencil design |
| −65 °C to +150 °C operating range | Validates use in industrial control modules exposed to wide ambient temperature swings |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 2.4 V reference for LDO feedback divider in battery-powered IoT sensor nodes. IC Role / Device Role / Timing Role: Zener diode acts as shunt voltage reference, sinking excess current to maintain fixed voltage at feedback node. Use Value: ±1 % tolerance ensures <±12 mV absolute error in 2.4 V reference, meeting 12-bit ADC input scaling requirements. |
Use Scenario: Clamping microcontroller I/O pins against 12 V transients in automotive body control modules. IC Role / Device Role / Timing Role: Shunt protection device conducting during overvoltage events to limit pin voltage to 2.4 V + VF. Use Value: 6.0 A surge rating absorbs 100 μs transients without degradation, preserving GPIO integrity. |
| Low-Power Bias Generator | Signal-Level Voltage Limiter |
Use Scenario: Generating bias voltage for op-amp input stages in portable medical pulse oximeters. IC Role / Device Role / Timing Role: Provides low-noise, low-drift DC bias point independent of supply rail fluctuations. Use Value: −3.5 to 0.0 mV/K temperature coefficient minimizes offset drift across 0–70 °C operating range. |
Use Scenario: Limiting analog sensor output swing to protect downstream ADC inputs in HVAC control systems. IC Role / Device Role / Timing Role: Acts as bidirectional clamp (forward + reverse) to constrain signal amplitude within safe bounds. Use Value: ≤0.9 V forward voltage ensures clamping threshold remains below 3.3 V logic high, preventing latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52C2V4 | ±5 % tolerance, 2.20–2.60 V range, 500 Ω rdif, 50 μA IR at 1 V | Lower accuracy and higher impedance; suitable only for non-critical biasing | Select when cost sensitivity outweighs voltage stability requirements |
| MMSZ4678T1G | ±5 % tolerance, 2.375–2.475 V range, 100 Ω rdif, 100 nA IR at 1 V, SOD-123 package | Lower leakage but wider tolerance; identical footprint but different thermal resistance (210 K/W j-a) | Prefer for ultra-low-power sleep-mode circuits where leakage dominates quiescent current |
Compared with BZT52H-A2V4X, BZT52C2V4 trades precision for cost in non-critical applications, while MMSZ4678T1G offers lower leakage but sacrifices tolerance control - making BZT52H-A2V4X optimal for designs requiring both accuracy and robust surge immunity in compact SMT layouts.
Availability
BZT52H-A2V4X is available at Aetrix Electronics and suitable for power supply reference, overvoltage clamp, and low-power bias generator applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for BZT52H-A2V4X 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 mass-market electronics.
The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered for precision voltage regulation and transient protection in cost-sensitive, high-volume consumer and industrial applications.
FAQ
What is the maximum continuous power dissipation for BZT52H-A2V4X?
The BZT52H-A2V4X has a total power dissipation rating of 830 mW at ambient temperature ≤25 °C when mounted on an FR4 PCB with single-sided copper and a 1 cm² cathode pad. Derating is required above 25 °C ambient per the 150 K/W junction-to-solder-point thermal resistance.
How does the ±1 % tolerance affect circuit accuracy?
The ±1 % tolerance means the actual Zener voltage falls between 2.37 V and 2.43 V at 5 mA test current. This directly limits absolute reference accuracy in feedback networks - for example, introducing up to ±12 mV error in a 2.4 V reference used for 3.3 V LDO regulation.
Can BZT52H-A2V4X be used for bidirectional ESD protection?
No - BZT52H-A2V4X is a unidirectional Zener diode optimized for reverse-bias regulation. Its forward voltage is ≤0.9 V, but it lacks symmetric clamping characteristics or specified ESD ratings. Dedicated TVS diodes like PESD5V0S1BA should be used for IEC 61000-4-2 compliant ESD protection.
Is the SOD123F package compatible with standard reflow profiles?
Yes - Nexperia specifies reflow soldering as the only recommended method for SOD123F. The package supports JEDEC J-STD-020-compliant peak temperatures up to 260 °C, with thermal resistance data validated using standard FR4 footprints (2.8 mm × 1.6 mm solder land).
BZT52H-A2V4X 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):
- 2.4 V
- Tolerance:
- ±1%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 85 Ohms
- Current - Reverse Leakage @ Vr:
- 50 µA @ 1 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-A2V4X FAQ
1.How can I place an order for BZT52H-A2V4X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-A2V4X 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-A2V4X reliable?
The price and inventory of BZT52H-A2V4X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-A2V4X is usually 5 days.
3.What payment methods are accepted for BZT52H-A2V4X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-A2V4X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-A2V4X?
BZT52H-A2V4X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-A2V4X 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-A2V4X?
For technical support, including BZT52H-A2V4X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-A2V4X requirements.
6.How does Aetrix verify that BZT52H-A2V4X is sourced from the original manufacturer or authorized distributors?
All BZT52H-A2V4X 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-A2V4X meets industry standards.
7.What is the process for return or replacement of BZT52H-A2V4X?
All BZT52H-A2V4X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-A2V4X, 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-A2V4X part is unused and in its original packaging.
Return procedure for BZT52H-A2V4X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52H-A2V4X Tags
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