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Nexperia USA Inc. BZT52H-A15X
- Part No.:
- BZT52H-A15X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-A15X.pdf
- Description:
- DIODE ZENER 15V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:6,227
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Product details
Overview
BZT52H-A15X from Nexperia is a precision Zener voltage regulator diode in SOD123F package, rated for 15 V nominal breakdown voltage (±1 % tolerance), 830 mW total power dissipation at 25 °C ambient, and 110 Ω maximum differential resistance at IZ = 5 mA. It delivers stable reference voltage in low-power linear regulation and overvoltage protection circuits for industrial control modules.
For engineers reviewing the BZT52H-A15X datasheet, BZT52H-A15X pinout, BZT52H-A15X application, or BZT52H-A15X equivalent, this page provides verified Zener parameters including VZ, IZSM, rdif, temperature coefficient, and thermal resistance - all critical for reference design stability, surge immunity, and PCB thermal layout validation.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining a stable 15 V output across its cathode-anode terminals when reverse-biased above its specified Zener voltage. Its ±1 % tolerance and 0.05 mV/K temperature coefficient (at IZ = 5 mA) enable high-accuracy analog references in sensor signal conditioning and ADC bias networks.
The SOD123F package supports surface-mount reflow assembly with defined thermal pad geometry (1 cm² cathode mounting area), yielding Rth(j-sp) = 70 K/W to solder point and Rth(j-a) = 150 K/W under standard FR4 PCB conditions - enabling predictable thermal derating up to Tj = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (nominal) | 15 V - precise reverse breakdown voltage at IZ = 5 mA, used for stable voltage reference generation |
| Tolerance | ±1 % - ensures tight regulation band (14.85 V to 15.15 V), critical for high-precision feedback loops |
| rdif | 110 Ω max - low dynamic impedance maintains regulation accuracy under varying load current |
| Ptot | 830 mW - maximum continuous power dissipation at Tamb ≤ 25 °C on standard FR4 PCB |
| IZSM | 2.0 A - non-repetitive peak reverse surge current (tp = 100 μs), supports transient overvoltage clamping |
| SZ | 0.05 mV/K - minimal voltage drift per degree Celsius, enabling stable operation across -65 °C to +150 °C ambient |
| Cd | 75 pF - junction capacitance at f = 1 MHz, VR = 0 V; impacts high-frequency noise filtering capability |
Pinout & Package
SOD123F is a compact, flat-lead surface-mount plastic package (3.6 mm × 2.7 mm × 1.2 mm) with gull-wing terminations optimized for automated reflow assembly and thermal performance on FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; carries reverse current during regulation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes Zener conduction path when reverse voltage exceeds VZ |
Key Features
| Feature | Design Value |
|---|---|
| High-precision voltage reference | ±1 % VZ tolerance enables <10 mV absolute error in 15 V reference designs |
| Low thermal drift | 0.05 mV/K coefficient minimizes output shift over industrial temperature range (-40 °C to +85 °C) |
| Robust surge handling | 2.0 A non-repetitive peak reverse current supports ESD and line-transient suppression per IEC 61000-4-2/4-4 |
| Thermally optimized SMD package | Rth(j-sp) = 70 K/W allows >600 mW usable power at 85 °C ambient with proper copper pour |
| Wide operating range | Rated for -65 °C to +150 °C junction temperature, suitable for extended-temperature industrial environments |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Power Rail Clamp |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors (e.g., strain gauges, RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt Zener reference providing fixed 15 V bias to sensor bridge, independent of supply rail fluctuations. Use Value: Enables <±0.1 % full-scale measurement accuracy by eliminating VREF drift-induced gain error in 24-bit sigma-delta ADC front-ends. |
Use Scenario: Protecting 3.3 V or 5 V microcontroller I/O pins from accidental 12–24 V field wiring faults in factory automation controllers. IC Role / Device Role / Timing Role: Reverse-biased clamp diode limiting pin voltage to 15 V, diverting fault current away from MCU ESD structures. Use Value: Prevents latch-up and permanent damage during 100 ms overvoltage events without requiring external series resistance or active circuitry. |
| Programmable Logic Controller (PLC) Analog Output Stage | DC-DC Converter Feedback Reference |
Use Scenario: Generating stable 15 V auxiliary supply for op-amp buffers driving 4–20 mA current loops in modular PLC output cards. IC Role / Device Role / Timing Role: Low-noise Zener regulator powering precision current-sense amplifiers and DAC output stages. Use Value: Maintains <0.05 % current loop linearity by suppressing ripple and drift in the 15 V bias rail feeding instrumentation-grade op-amps. |
Use Scenario: Providing accurate voltage reference for TL431-based feedback networks in isolated flyback converters delivering 12 V @ 2 A. IC Role / Device Role / Timing Role: Secondary-side reference source setting output voltage via optocoupler-coupled error amplifier. Use Value: Achieves ±1.5 % output regulation over line/load/temperature by replacing less-stable resistor-divider references with a 15 V Zener-stabilized node. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52C15 | ±5 % VZ tolerance (14.25–15.75 V), higher rdif (110 Ω typ → 150 Ω max), same SOD123F package | Acceptable where ±5 % regulation is sufficient (e.g., non-critical biasing); not suitable for precision reference use | Select only if cost sensitivity outweighs accuracy requirements and thermal performance is secondary |
| MMSZ5245B | ±5 % tolerance, SOD-123 package (identical footprint), 500 mW Ptot, 17 Ω rdif at IZ = 20 mA | Lower power rating limits sustained current handling; lower rdif improves regulation but requires higher test current | Prefer for low-power, high-impedance nodes where 500 mW suffices and tighter rdif matters more than absolute VZ accuracy |
Compared with BZT52C15 and MMSZ5245B, the BZT52H-A15X uniquely combines ±1 % tolerance, 830 mW power capability, and 110 Ω rdif in SOD123F - making it optimal for industrial-grade analog references demanding both precision and robustness.
Availability
BZT52H-A15X is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable logic controller (PLC) analog outputs, and microcontroller I/O protection requiring stable component supply with guaranteed long-term continuity.
Supply support for BZT52H-A15X 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, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The BZT52H series belongs to Nexperia's precision Zener diode product line, engineered specifically for stable voltage reference and overvoltage protection in space-constrained, thermally demanding industrial applications.
FAQ
What is the maximum continuous reverse current for BZT52H-A15X at 25 °C ambient?
The device does not specify a maximum continuous reverse current independently; instead, it defines total power dissipation (Ptot = 830 mW at Tamb ≤ 25 °C). At 15 V VZ, this corresponds to a maximum average reverse current of approximately 55 mA (IZ = Ptot/VZ). Derating is required above 25 °C per the thermal resistance data.
Can BZT52H-A15X be used in place of a 1N4744A?
No - the 1N4744A is a through-hole DO-41 device rated for 15 V ±5 % and 1 W, while BZT52H-A15X is an SMD SOD123F part with ±1 % tolerance and 830 mW rating. Footprint, thermal behavior, and surge capability differ significantly; direct substitution requires PCB redesign and thermal validation.
What is the reverse leakage current at 12 V across BZT52H-A15X?
At VR = 12 V and Tj = 25 °C, typical reverse current is <0.1 μA (100 nA), based on Figure 9 in the datasheet. This ultra-low leakage ensures minimal loading on high-impedance reference nodes and preserves battery life in always-on monitoring circuits.
Does BZT52H-A15X meet automotive qualification standards?
No - per Revision 7 (January 2023), the BZT52H series is explicitly designated as non-automotive qualified. Nexperia offers separate -Q automotive variants (e.g., BZT52H-A15X-Q) with AEC-Q200 testing; this part is intended for industrial, commercial, and consumer applications only.
BZT52H-A15X 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):
- 15 V
- Tolerance:
- ±1%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 10.5 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-A15X FAQ
1.How can I place an order for BZT52H-A15X through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-A15X 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-A15X reliable?
The price and inventory of BZT52H-A15X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-A15X is usually 5 days.
3.What payment methods are accepted for BZT52H-A15X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-A15X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-A15X?
BZT52H-A15X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-A15X 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-A15X?
For technical support, including BZT52H-A15X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-A15X requirements.
6.How does Aetrix verify that BZT52H-A15X is sourced from the original manufacturer or authorized distributors?
All BZT52H-A15X 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-A15X meets industry standards.
7.What is the process for return or replacement of BZT52H-A15X?
All BZT52H-A15X units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-A15X, 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-A15X part is unused and in its original packaging.
Return procedure for BZT52H-A15X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52H-A15X Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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