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Nexperia USA Inc. BZT52H-B30,115
- Part No.:
- BZT52H-B30,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-B30,115.pdf
- Description:
- DIODE ZENER 30V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:1,234
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Product details
Overview
BZT52H-B30,115 from Nexperia is a ±2 % tolerance Zener diode in SOD123F package, rated for 30 V nominal breakdown voltage at IZ = 2 mA, with 830 mW total power dissipation and 250 mA maximum forward current - used for precision voltage reference and overvoltage protection in low-power DC rails.
For engineers reviewing the BZT52H-B30,115 datasheet, BZT52H-B30,115 pinout, BZT52H-B30,115 application, or BZT52H-B30,115 equivalent, this page delivers verified Zener parameters, thermal resistance (Rth(j-sp) = 150 K/W), differential resistance (250 Ω max), reverse leakage (<40 μA at VR = 24 V), and cathode/anode terminal mapping for PCB layout and reliability validation.
Technical Context
This Zener operates in reverse-bias breakdown mode with a temperature coefficient of +0.05 mV/K at IZ = 2 mA, enabling stable regulation across -65 °C to +150 °C ambient range. Its SOD123F footprint supports reflow-only assembly on FR4 PCBs with 1 cm² cathode pad for thermal management.
The device exhibits 250 Ω maximum differential resistance at IZ = 2 mA and 50 μA reverse current at VR = 24 V, confirming tight regulation performance for feedback networks and clamp circuits where low dynamic impedance is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VZ | 29.4 V to 30.6 V at IZ = 2 mA - ensures ±2 % regulation accuracy for 30 V reference designs |
| Total Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 PCB |
| Differential Resistance rdif | ≤ 250 Ω at IZ = 2 mA - determines output impedance stability under load transients |
| Reverse Current IR | < 40 μA at VR = 24 V - guarantees low quiescent loss in standby clamp configurations |
| Forward Voltage VF | ≤ 0.9 V at IF = 10 mA - enables predictable forward conduction during fault conditions |
| Junction-to-Solder-Point Rth(j-sp) | 150 K/W - quantifies thermal path efficiency from die to cathode solder joint for thermal design |
| Non-repetitive Peak Reverse Current IZSM | 1.0 A at tp = 100 μs - supports transient surge suppression without degradation |
Pinout & Package
SOD123F surface-mount plastic package: 2.5–2.7 mm length, 1.0–1.2 mm width, 0.55–0.70 mm height, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal for orientation-sensitive placement |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % VZ tolerance | Enables tighter regulation than ±5 % variants, reducing need for post-regulation trimming in precision supplies |
| 830 mW power rating | Supports higher steady-state clamping energy than standard 500 mW Zeners in same footprint |
| SOD123F package | Provides 33 % smaller board area vs. DO-214AC while maintaining 150 K/W thermal resistance to solder point |
| 150 °C max junction temperature | Allows operation in high-temperature industrial environments without derating below 85 °C ambient |
| 250 mA forward current rating | Permits use as bidirectional transient suppressor when forward-conducting during negative surges |
Applications
| Power Supply Feedback Reference | Overvoltage Clamp for Microcontroller I/O |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated flyback converter secondary-side regulation. IC Role / Device Role / Timing Role: Zener diode provides precise 30 V reference to optocoupler LED anode, setting output voltage threshold. Use Value: ±2 % VZ tolerance ensures ±1.5 % output voltage accuracy without trim potentiometer. |
Use Scenario: Protecting 3.3 V GPIO pins from accidental 24 V supply misconnection. IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-pin; conducts above 30 V to shunt excess current. Use Value: 1.0 A non-repetitive peak current rating absorbs 100 μs surges without failure. |
| ADC Reference Voltage Divider | Low-Power Sensor Biasing |
Use Scenario: Generating stable 15 V intermediate reference from 30 V rail for 16-bit SAR ADC. IC Role / Device Role / Timing Role: Paired with precision resistor to create ratiometric divider; Zener sets upper node voltage. Use Value: 250 Ω differential resistance minimizes loading error on high-impedance divider output. |
Use Scenario: Biasing analog output stage of temperature sensor IC requiring stable 30 V supply. IC Role / Device Role / Timing Role: Acts as shunt regulator in constant-current source configuration with series resistor. Use Value: 40 μA max reverse leakage at 24 V ensures sub-1 μW standby power consumption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-C30,115 | ±5 % VZ tolerance (28.0–32.0 V), 50 μA IR at VR = 24 V | Acceptable where ±5 % output tolerance is permitted; lower cost for non-critical rails | Select when regulation accuracy is secondary to BOM cost reduction in consumer-grade power stages |
| MMSZ5256ET1G | ±5 % VZ, 500 mW Ptot, SOD-123 package, 30 V nominal | Lower power rating limits surge energy absorption; identical footprint but higher thermal resistance | Choose only for space-constrained designs where 500 mW dissipation suffices and thermal margin is verified |
Compared with BZT52H-B30,115, the ±5 % BZT52H-C30,115 trades regulation accuracy for cost, while MMSZ5256ET1G sacrifices 330 mW power headroom and thermal performance despite matching footprint - making the BZT52H-B30,115 optimal for industrial 30 V reference and clamp applications demanding both precision and robustness.
Availability
BZT52H-B30,115 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and medical sensor interfaces requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT52H-B30,115 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 logic, discrete, and MOSFET solutions with manufacturing rooted in process technology leadership and automotive-grade quality systems.
The BZT52H series belongs to Nexperia's general-purpose Zener portfolio designed specifically for cost-sensitive yet thermally demanding applications in industrial automation, building controls, and power management subsystems.
FAQ
What is the maximum allowable ambient temperature for continuous operation at full 830 mW dissipation?
The datasheet specifies 830 mW total power dissipation only at Tamb ≤ 25 °C. Above that, derating is required per the thermal resistance curve: at 70 °C ambient, maximum dissipation drops to approximately 420 mW using Rth(j-a) = 330 K/W. For sustained 830 mW operation, board-level thermal design must maintain case temperature ≤ 25 °C via copper pour and airflow.
Can BZT52H-B30,115 be used in series to achieve higher breakdown voltages?
No - Zener diodes in series do not guarantee balanced voltage division due to manufacturing spread in VZ and temperature coefficients. The BZT52H-B30,115 has +0.05 mV/K coefficient; mismatched units would cause thermal runaway. For >30 V regulation, select a single higher-voltage Zener (e.g., BZT52H-B33,115) or use active regulation.
Is the SOD123F package compatible with standard reflow profiles for lead-free soldering?
Yes - Nexperia explicitly states reflow soldering is the only recommended method for SOD123F. The package supports JEDEC J-STD-020D-compliant peak temperatures up to 260 °C for ≤ 30 seconds. Thermal pad design must follow Figure 12 footprint: 2.8 mm × 1.2 mm solder land per terminal with 1.1 mm spacing.
How does the 250 mA forward current rating impact circuit protection functionality?
The 250 mA forward rating allows the diode to safely conduct reverse-polarity transients (e.g., −24 V spikes on a 3.3 V line) without damage, acting as a bidirectional protector when paired with series resistance. This extends utility beyond classic Zener clamping into dual-role surge suppression where polarity reversal is possible.
BZT52H-B30,115 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):
- 30 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 21 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52H-B30,115 FAQ
1.How can I place an order for BZT52H-B30,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-B30,115 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-B30,115 reliable?
The price and inventory of BZT52H-B30,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-B30,115 is usually 5 days.
3.What payment methods are accepted for BZT52H-B30,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-B30,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-B30,115?
BZT52H-B30,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-B30,115 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-B30,115?
For technical support, including BZT52H-B30,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-B30,115 requirements.
6.How does Aetrix verify that BZT52H-B30,115 is sourced from the original manufacturer or authorized distributors?
All BZT52H-B30,115 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-B30,115 meets industry standards.
7.What is the process for return or replacement of BZT52H-B30,115?
All BZT52H-B30,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-B30,115, 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-B30,115 part is unused and in its original packaging.
Return procedure for BZT52H-B30,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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