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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. BZT52H-C12,115

Name: BZT52H-C12,115
Brand: Nexperia USA Inc.
SKU: BZT52H-C12,115
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BZT52H-C12,115

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SOD-123F

Datasheet:: BZT52H-C12,115.pdf

Description:: DIODE ZENER 12V 375MW SOD123F

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Product details

Overview

BZT52H-C12,115 from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD123F package, rated for 12 V nominal breakdown voltage at 5 mA, 830 mW total power dissipation, and 90 Ω maximum differential resistance - used for precision voltage reference and overvoltage protection in low-power analog supply rails.

For engineers reviewing the BZT52H-C12,115 datasheet, BZT52H-C12,115 pinout, BZT52H-C12,115 application, or BZT52H-C12,115 equivalent, this page delivers verified Zener parameters, thermal resistance (70 K/W junction-to-solder point), reverse current (≤1 μA at 9.4 V), temperature coefficient (+6.0 mV/K), and SOD123F footprint compatibility for surface-mount design validation.

Technical Context

This Zener diode operates in reverse-bias breakdown mode with tightly controlled V_Z = 11.4–12.7 V at I_Z = 5 mA and exhibits a positive temperature coefficient of +6.0 mV/K, enabling stable regulation across industrial temperature ranges (−65 °C to +150 °C). Its low 90 Ω differential resistance ensures minimal output voltage drift under load variation.

The device uses planar epitaxial construction in a small-outline SOD123F package with cathode-marked anode-cathode terminals, optimized for reflow soldering on FR4 PCBs with 1 cm² cathode pad - delivering 70 K/W junction-to-solder-point thermal resistance and 830 mW total power dissipation at T_amb ≤ 25 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
Breakdown Voltage V_Z	11.4 V min to 12.7 V max at I_Z = 5 mA - defines regulated output voltage window for reference stability
Tolerance	±5 % - specifies worst-case deviation from nominal 12 V, critical for supply rail margining
Differential Resistance r_dif	90 Ω max - determines output impedance and load-regulation error under current change
Reverse Current I_R	≤1 μA at V_R = 9.4 V - ensures low leakage before breakdown, vital for standby power integrity
Total Power Dissipation P_tot	830 mW at T_amb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 board
Junction-to-Solder-Point R_th(j-sp)	70 K/W - enables thermal derating calculation for cathode-pad layout in high-reliability PCBs
Forward Voltage V_F	0.9 V max at I_F = 10 mA - confirms low conduction loss when used in series-clamp configurations

Pinout & Package

SOD123F plastic surface-mount package: 2-terminal, flat lead, cathode-bar marked; dimensions 3.6 mm × 1.7 mm × 1.0 mm (L × W × H), 1.2 mm lead pitch.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode (K)	Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation
2	Anode (A)	Connected to ground or lower-potential rail; reverse-bias polarity required for Zener operation

Key Features

Feature	Design Value
Three-tolerance series	±1 %, ±2 %, and ±5 % options - enables cost-performance trade-off selection per application accuracy requirement
Wide voltage range	2.4 V to 75 V (E24) - supports single-family sourcing across diverse supply rail voltages
Low thermal resistance	70 K/W junction-to-solder point - allows higher power operation with minimal board copper area
Reflow-solder compatible	SOD123F footprint per Fig. 12 - eliminates need for wave-solder tooling in automated assembly
Non-repetitive surge rating	2.5 A peak reverse current (100 μs pulse) - provides transient overvoltage clamping headroom

Applications

Power Supply Reference

Overvoltage Protection

Use Scenario: Providing stable 12 V reference for ADC biasing and op-amp feedback networks in industrial sensor signal conditioning circuits.

IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to maintain fixed voltage across shunt-connected load.

Use Value: ±5 % tolerance and +6.0 mV/K temperature coefficient enable <1 % total error over −40 °C to +85 °C ambient without trimming.

Use Scenario: Clamping 12 V rail against ESD transients and switching spikes in automotive body-control modules.

IC Role / Device Role / Timing Role: Shunt-connected Zener absorbing excess energy during overvoltage events to protect downstream ICs.

Use Value: 2.5 A non-repetitive peak reverse current rating handles 100 μs surges without degradation, preserving long-term reliability.

Low-Power Voltage Regulation

Signal-Level Voltage Limiting

Use Scenario: Regulating 12 V microcontroller I/O supply in battery-powered IoT edge nodes where quiescent current must be minimized.

IC Role / Device Role / Timing Role: Passive shunt regulator maintaining rail voltage while sinking only leakage current until load demand exceeds threshold.

Use Value: ≤1 μA reverse current at 9.4 V ensures sub-10 nW standby power draw, extending battery life in always-on applications.

Use Scenario: Limiting analog sensor output swing to ±12 V before feeding into instrumentation amplifier inputs.

IC Role / Device Role / Timing Role: Bidirectional clamp using two anti-series Zeners (one forward, one reverse) to constrain signal excursion.

Use Value: 0.9 V forward voltage drop and 12 V reverse breakdown provide symmetric 12.9 V peak-to-peak clipping window with low distortion.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZT52C12-7-F	Same 12 V ±5 % V_Z, but in SOD123 package (not SOD123F); 100 Ω r_dif vs. 90 Ω	Slightly higher thermal resistance (150 K/W j-a vs. 150 K/W for SOD123F) limits power handling on dense boards	Select when legacy SOD123 footprint is fixed and 10 mW higher r_dif is acceptable
MMSZ5242B-TP	12 V ±5 % V_Z, SOD123 package, 100 Ω r_dif, 500 mW P_tot - lower power rating than 830 mW	Lower surge capability (1.5 A I_ZSM) and no specified R_th(j-sp) - less suitable for thermally constrained layouts	Choose only for cost-sensitive, low-power designs where 500 mW dissipation suffices and thermal modeling is not required

Compared with BZT52H-C12,115, the BZT52C12-7-F offers identical electrical specs but reduced thermal performance in legacy packaging, while MMSZ5242B-TP trades 330 mW power headroom and missing solder-point thermal data for broader distributor availability.

Availability

BZT52H-C12,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, and IoT power management requiring stable component supply with full traceability and long-lifecycle support.

Supply support for BZT52H-C12,115 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, headquartered in Nijmegen, Netherlands.

The BZT52H series belongs to Nexperia's general-purpose Zener diode product line, engineered for cost-effective, space-efficient voltage regulation and protection in consumer, industrial, and automotive-qualified (−Q variants) applications.

FAQ

What is the maximum continuous reverse current the BZT52H-C12,115 can sustain without degradation?

The device has no defined maximum continuous reverse current; instead, its safe operating limit is governed by total power dissipation. At 12 V breakdown, sustained operation requires limiting I_Z to ≤69 mA (830 mW ÷ 12 V) at T_amb = 25 °C, derating linearly above that ambient per the 70 K/W junction-to-solder-point thermal resistance.

Does the BZT52H-C12,115 meet automotive qualification standards?

No - the BZT52H-C12,115 is explicitly designated as non-automotive qualified per Revision 7 (January 2023) datasheet Section 13. Automotive-grade alternatives are available under the BZT52H-Q series, which undergo AEC-Q101 stress testing and include extended temperature screening.

How does the +6.0 mV/K temperature coefficient affect regulation accuracy over temperature?

At 12 V nominal V_Z, a +6.0 mV/K coefficient causes +0.72 V shift from −40 °C to +85 °C (125 K ΔT), resulting in a 6 % full-scale drift. This is fully accounted for in the datasheet's V_Z min/max spec (11.4–12.7 V), so no additional compensation is needed if design margins accommodate that range.

Can the BZT52H-C12,115 be used in series-shunt hybrid regulator topologies?

Yes - its 0.9 V forward voltage at 10 mA and 12 V reverse breakdown allow use as a series-pass element in conjunction with a shunt reference. However, forward conduction must be avoided during normal regulation; proper biasing ensures it remains reverse-biased except during fault conditions.

BZT52H-C12,115 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:: ±5%

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-C12,115 FAQ

1.How can I place an order for BZT52H-C12,115 through Aetrix?

Please submit a Request for Quotation (RFQ) for BZT52H-C12,115 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-C12,115 reliable?

The price and inventory of BZT52H-C12,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-C12,115 is usually 5 days.

3.What payment methods are accepted for BZT52H-C12,115?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-C12,115 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BZT52H-C12,115?

BZT52H-C12,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BZT52H-C12,115 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-C12,115?

For technical support, including BZT52H-C12,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-C12,115 requirements.

6.How does Aetrix verify that BZT52H-C12,115 is sourced from the original manufacturer or authorized distributors?

All BZT52H-C12,115 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-C12,115 meets industry standards.

7.What is the process for return or replacement of BZT52H-C12,115?

All BZT52H-C12,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-C12,115, 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-C12,115 part is unused and in its original packaging.

Return procedure for BZT52H-C12,115:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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