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Nexperia USA Inc. BZT52H-C3V0-QX
- Part No.:
- BZT52H-C3V0-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-C3V0-QX.pdf
- Description:
- DIODE ZENER 3V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:7,139
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Product details
Overview
BZT52H-C3V0-QX from Nexperia is a ±5 % tolerance Zener diode in SOD123F package, rated for 3.0 V nominal breakdown voltage at 5 mA, 830 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage regulation and reference applications.
For engineers reviewing the BZT52H-C3V0-QX datasheet, BZT52H-C3V0-QX pinout, BZT52H-C3V0-QX application, or BZT52H-C3V0-QX equivalent, this device serves as a precision low-voltage shunt regulator with tight tolerance, low differential resistance (95 Ω), and stable temperature coefficient (−3.5 to 0.0 mV/K) in space-constrained automotive PCBs.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to maintain a stable 3.0 V reference across load variations, with specified test current of 5 mA and maximum reverse current of 10 μA at 1.0 V. Its thermal resistance from junction to solder point is 70 K/W, enabling reliable operation up to 150 °C junction temperature.
The device features a cathode-anode two-terminal structure with marking bar indicating cathode polarity, and is optimized for surface-mount reflow soldering on FR4 PCBs using standardized SOD123F footprint. It exhibits 450 pF capacitance at 0 V and non-repetitive peak reverse current capability of 6.0 A for transient suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 3.0 V at IZ = 5 mA - defines precise regulation point for low-voltage biasing and reference circuits |
| Tolerance | ±5 % - ensures predictable voltage clamping within 2.80–3.20 V range under production conditions |
| Differential Resistance | 95 Ω max - limits output voltage variation under changing load current, critical for stable reference accuracy |
| Total Power Dissipation | 830 mW at Tamb ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 PCB with 1 cm² cathode pad |
| Forward Voltage | 0.9 V max at IF = 10 mA - defines conduction threshold in forward bias, relevant for ESD protection path design |
| Reverse Current | 10 μA max at VR = 1.0 V - quantifies leakage before breakdown, essential for low-power standby circuit integrity |
| Temperature Coefficient | −3.5 to 0.0 mV/K - characterizes Zener voltage drift over temperature, enabling compensation in precision analog designs |
Pinout & Package
SOD123F is a small-outline, flat-lead, surface-mount plastic package measuring 3.6 mm × 1.7 mm × 1.0 mm with gull-wing terminations. It supports automated placement and reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to higher-potential node in Zener regulation; marked by bar on package body; carries reverse breakdown current |
| 2 | Anode (A) | Connected to lower-potential node (typically ground); completes reverse-bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood and cabin applications including engine control modules and body electronics |
| Three tolerance grades | ±1 %, ±2 %, and ±5 % options enable cost-performance trade-off selection without redesigning PCB layout |
| Low thermal resistance | 70 K/W junction-to-solder-point enables >500 mW usable power at 85 °C ambient on standard FR4 |
| Wide voltage range | 2.4 V to 75 V coverage across E24 series supports single-family sourcing for diverse system rails |
| Small SMD footprint | SOD123F package occupies <2.5 mm² board area, suitable for high-density automotive ADAS and infotainment PCBs |
Applications
| Automotive Cabin Control | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Voltage reference for HVAC microcontroller ADC inputs and display backlight dimming circuits. IC Role / Device Role / Timing Role: Shunt regulator providing stable 3.0 V reference to analog front-end and PWM driver ICs. Use Value: ±5 % tolerance and −3.5 to 0.0 mV/K TC ensure consistent sensor reading accuracy across −40 to +105 °C operating range. |
Use Scenario: Biasing and clamping in 4–20 mA loop transmitter front-ends for pressure/temperature transducers. IC Role / Device Role / Timing Role: Precision Zener reference establishing loop compliance voltage and overvoltage protection threshold. Use Value: 95 Ω differential resistance minimizes reference error under varying loop load, improving measurement linearity. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Reference |
|
Use Scenario: Secondary-side voltage sensing in isolated flyback converters for USB-C PD adapters. IC Role / Device Role / Timing Role: Zener element in optocoupler feedback network regulating output voltage via TL431-like topology. Use Value: 830 mW power rating allows direct connection to optocoupler LED without series resistor, simplifying BOM. |
Use Scenario: Stable excitation source for bridge-based strain gauge and thermistor measurements in portable ultrasound units. IC Role / Device Role / Timing Role: Low-drift voltage reference for ratiometric analog signal chain calibration. Use Value: 450 pF capacitance and 10 μA IR at 1.0 V prevent noise coupling into sensitive analog acquisition paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52B3V0-Q | ±2 % tolerance, 95 Ω rdif, same SOD123F package | Higher precision required in feedback loops where 1 % output stability is mandated | Select when tighter voltage tolerance justifies marginal cost increase and thermal derating remains acceptable |
| MMSZ4684T1G | ±5 % tolerance, 3.0 V, SOD-123 package, 500 mW Ptot | Lower power rating requires series resistor in high-current regulation; not AEC-Q101 qualified | Use only in non-automotive consumer applications where qualification and 830 mW headroom are not required |
Compared with BZT52H-C3V0-QX, BZT52B3V0-Q offers improved voltage accuracy but identical thermal performance, while MMSZ4684T1G sacrifices automotive qualification and power capability for broader distributor availability in non-critical systems.
Availability
BZT52H-C3V0-QX is available at Aetrix Electronics and suitable for automotive cabin electronics, industrial sensor transmitters, USB-C power adapters, and medical diagnostic equipment requiring stable component supply with AEC-Q101 assurance.
Supply support for BZT52H-C3V0-QX 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 devices, with leadership in automotive-grade components.
The BZT52H-Q series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for robust voltage regulation and reference functions in harsh automotive environments.
FAQ
What is the maximum continuous reverse current the BZT52H-C3V0-QX can sustain at 3.0 V?
The device is not rated for continuous reverse current at its Zener voltage; it is designed for regulated shunt operation at IZ = 5 mA. Sustained reverse current beyond 5 mA must be limited by external series resistance to maintain junction temperature below 150 °C and avoid exceeding 830 mW total dissipation on standard FR4 PCB.
Can BZT52H-C3V0-QX replace a 3.3 V Zener in an existing circuit?
No - its nominal 3.0 V breakdown voltage differs from 3.3 V by 100 mV, which may shift bias points or trip thresholds in precision circuits. Substitution requires verification of downstream IC input tolerances, reference divider ratios, and thermal drift impact across the full operating temperature range.
Is the SOD123F package compatible with standard reflow profiles for lead-free assembly?
Yes - Nexperia specifies reflow soldering as the only recommended method, and the SOD123F outline complies with IPC-7351B density level A. The package withstands peak temperatures up to 260 °C for 30 seconds, matching JEDEC J-STD-020 Class 3a requirements for lead-free processes.
How does the −3.5 to 0.0 mV/K temperature coefficient affect regulation accuracy over temperature?
At 3.0 V nominal, this coefficient corresponds to a worst-case drift of ±0.105 V from −40 to +125 °C (165 K span), resulting in regulation between 2.895 V and 3.105 V. This 3.5 % full-scale variation is acceptable for non-precision biasing but requires compensation in metrology-grade references.
BZT52H-C3V0-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZT52H-Q
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3 V
- Tolerance:
- ±6.67%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52H-C3V0-QX FAQ
1.How can I place an order for BZT52H-C3V0-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-C3V0-QX 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-C3V0-QX reliable?
The price and inventory of BZT52H-C3V0-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52H-C3V0-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-C3V0-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-C3V0-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-C3V0-QX?
BZT52H-C3V0-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-C3V0-QX 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-C3V0-QX?
For technical support, including BZT52H-C3V0-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-C3V0-QX requirements.
6.How does Aetrix verify that BZT52H-C3V0-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-C3V0-QX 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-C3V0-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-C3V0-QX?
All BZT52H-C3V0-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-C3V0-QX, 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-C3V0-QX part is unused and in its original packaging.
Return procedure for BZT52H-C3V0-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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