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Nexperia USA Inc. BZT52H-B12,115
- Part No.:
- BZT52H-B12,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-B12,115.pdf
- Description:
- DIODE ZENER 12V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:1,365
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Product details
Overview
BZT52H-B12,115 from Nexperia is a ±2 % tolerance Zener diode in SOD123F package, rated for 12 V nominal breakdown voltage at IZ = 5 mA, 830 mW total power dissipation at Tamb ≤ 25 °C, and 150 °C maximum junction temperature-used for precision voltage reference and overvoltage protection in low-power DC rails.
For engineers reviewing the BZT52H-B12,115 datasheet, BZT52H-B12,115 pinout, BZT52H-B12,115 application, or BZT52H-B12,115 equivalent, this page delivers verified Zener parameters, thermal resistance values, differential resistance (90 Ω max), reverse current limits (≤1 μA at VR = 9.6 V), and SOD123F mounting guidance for PCB-level regulation design.
Technical Context
This Zener operates in reverse-bias breakdown mode with tightly controlled VZ = 11.80–12.20 V at 5 mA test current and exhibits a positive temperature coefficient of +0.1 mV/K, minimizing drift across industrial temperature ranges. Its low 90 Ω max differential resistance ensures stable regulation under load variation.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it achieves Rth(j-a) = 330 K/W in free air and Rth(j-sp) = 70 K/W to cathode solder point-enabling reliable thermal management in space-constrained designs without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VZ | 11.80–12.20 V at IZ = 5 mA - defines precise clamping threshold for 12 V rail stabilization |
| Tolerance | ±2 % - enables tighter voltage margin control than ±5 % variants in feedback loops |
| Differential Resistance rdif | ≤90 Ω - ensures minimal output voltage shift under dynamic load changes |
| Reverse Current IR | ≤1 μA at VR = 9.6 V - guarantees low leakage in standby or high-impedance sensing paths |
| Total Power Dissipation Ptot | 830 mW at Tamb ≤ 25 °C - supports continuous operation in ambient-limited industrial enclosures |
| Junction Temperature Tj | −65 to +150 °C - allows deployment in extended-temperature environments including automotive under-hood proximity |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - confirms low conduction loss when used bidirectionally or as ESD clamp |
Pinout & Package
SOD123F plastic surface-mount package: 2-terminal, flat lead, 3.4–3.6 mm length × 2.5–2.7 mm width × 1.0–1.2 mm height; cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity-sensitive terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Power rating | 830 mW at 25 °C ambient - sufficient for >10 mA regulation current in compact layouts |
| Voltage tolerance | ±2 % - reduces binning requirements and improves yield in feedback divider networks |
| Thermal resistance | 70 K/W to cathode solder point - enables direct thermal coupling to copper pour for enhanced reliability |
| Low leakage | ≤1 μA at 80 % VZ - preserves battery life in always-on monitoring circuits |
| Package footprint | SOD123F - compatible with standard reflow profiles and automated placement equipment |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulators or switching converter error amplifiers. IC Role / Device Role / Timing Role: Provides fixed 12 V reference for TL431-like shunt regulator configurations. Use Value: ±2 % VZ tolerance ensures output accuracy within ±0.24 V, meeting tight DC-DC setpoint requirements. |
Use Scenario: Protecting microcontroller I/O pins against transient surges on 12 V supply lines. IC Role / Device Role / Timing Role: Acts as fast-acting crowbar element limiting voltage to 12.2 V during ESD or load dump events. Use Value: 830 mW power rating sustains 68 mA surge current for 100 μs without degradation. |
| Temperature-Stable Biasing | Low-Power Sensor Excitation |
Use Scenario: Generating bias voltage for op-amp input stages in industrial analog front-ends. IC Role / Device Role / Timing Role: Supplies low-drift 12 V reference to instrumentation amplifier gain-setting resistors. Use Value: +0.1 mV/K tempco minimizes offset drift below 1.2 mV over −40 to +85 °C operating range. |
Use Scenario: Exciting resistive bridge sensors (e.g., strain gauges) requiring stable excitation voltage. IC Role / Device Role / Timing Role: Delivers regulated 12 V to bridge top rail with minimal ripple and noise coupling. Use Value: 90 Ω differential resistance suppresses supply-induced common-mode error to <0.1 % of full scale. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-C12,115 | ±5 % tolerance (11.4–12.7 V), higher IR (≤5 μA at 9.6 V) | Acceptable where cost sensitivity outweighs precision; less suitable for closed-loop feedback | Select when budget constraints dominate and ±5 % VZ meets system accuracy targets |
| MMSZ5242B-7-F | ±5 % tolerance, SOD-123 package, 12 V nominal, 500 mW rating | Lower power handling limits continuous current to ~42 mA vs. 69 mA for BZT52H-B12 | Choose only if legacy design reuse or dual-sourcing mandates Diodes Inc. footprint compatibility |
Compared with BZT52H-C12,115 and MMSZ5242B-7-F, the BZT52H-B12,115 delivers superior voltage precision and thermal robustness-enabling tighter regulation in feedback networks and higher sustained current capability in clamp roles without derating.
Availability
BZT52H-B12,115 is available at Aetrix Electronics and suitable for power supply reference, overvoltage clamp, and temperature-stable biasing requiring stable component supply across industrial, instrumentation, and embedded control programs.
Supply support for BZT52H-B12,115 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 discrete and logic devices, headquartered in Nijmegen, Netherlands.
The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered for precision voltage regulation and transient suppression in cost-sensitive, space-constrained SMT applications.
FAQ
What is the maximum reverse current for BZT52H-B12,115 at 9.6 V?
The maximum reverse current is 1 μA at VR = 9.6 V and Tj = 25 °C, per Table 8 of the datasheet. This low leakage supports energy-efficient operation in battery-powered systems and high-impedance reference nodes where current draw must remain sub-microampere.
Can BZT52H-B12,115 be used in parallel for higher power handling?
No-Zener diodes exhibit negative temperature coefficients at low voltages but positive above ~5.6 V; BZT52H-B12,115 has +0.1 mV/K, causing current hogging if paralleled without ballast resistors. For >830 mW needs, use a single higher-rated device or active regulation instead.
What is the thermal resistance from junction to solder point?
Rth(j-sp) is 70 K/W, measured from junction to cathode solder point under specified mounting conditions (FR4 PCB, single-sided copper, 1 cm² cathode pad). This value enables accurate thermal modeling when designing copper pours for heat dissipation.
How does the ±2 % tolerance affect feedback loop stability in a DC-DC converter?
With ±2 % VZ, the absolute output voltage error is ±0.24 V at 12 V-directly propagating into converter setpoint accuracy. In closed-loop designs using this Zener in TL431-style references, it contributes <0.5 % total output error when combined with resistor tolerances and op-amp offsets.
BZT52H-B12,115 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):
- 12 V
- Tolerance:
- ±2%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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-B12,115 FAQ
1.How can I place an order for BZT52H-B12,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-B12,115 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-B12,115 reliable?
The price and inventory of BZT52H-B12,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-B12,115 is usually 5 days.
3.What payment methods are accepted for BZT52H-B12,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-B12,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-B12,115?
BZT52H-B12,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-B12,115 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-B12,115?
For technical support, including BZT52H-B12,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-B12,115 requirements.
6.How does Aetrix verify that BZT52H-B12,115 is sourced from the original manufacturer or authorized distributors?
All BZT52H-B12,115 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-B12,115 meets industry standards.
7.What is the process for return or replacement of BZT52H-B12,115?
All BZT52H-B12,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-B12,115, 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-B12,115 part is unused and in its original packaging.
Return procedure for BZT52H-B12,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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