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Nexperia USA Inc. BZT52H-C3V6-QX
- Part No.:
- BZT52H-C3V6-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-C3V6-QX.pdf
- Description:
- DIODE ZENER 3.6V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:4,785
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Product details
Overview
BZT52H-C3V6-QX from Nexperia is a ±5 % tolerance Zener diode in SOD123F package, rated for 3.6 V nominal breakdown voltage at 5 mA, 830 mW total power dissipation, and qualified to AEC-Q101 for automotive voltage regulation. It provides stable reference voltage in low-power supply rails and ESD-protected signal conditioning circuits.
For engineers reviewing the BZT52H-C3V6-QX datasheet, BZT52H-C3V6-QX pinout, BZT52H-C3V6-QX application, or BZT52H-C3V6-QX equivalent, this page delivers verified Zener parameters, thermal resistance values, reverse current limits at 1 V and 3 V, differential resistance under regulation, and automotive-grade qualification status - all critical for board-level reliability validation and replacement selection.
Technical Context
This device operates as a two-terminal voltage reference with cathode-anode polarity, leveraging silicon PN junction avalanche breakdown. Its ±5 % tolerance (C-series) and 95 Ω typical differential resistance at 5 mA enable predictable clamping in feedback loops and overvoltage protection circuits.
Designed for surface-mount use on FR4 PCBs with single-sided copper, it exhibits 70 K/W junction-to-solder-point thermal resistance when mounted with a 1 cm² cathode pad, supporting sustained 375 mW operation at ambient temperatures up to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.40 V to 3.80 V at IZ = 5 mA - defines regulated output range under standard test conditions |
| Differential Resistance (rdif) | 95 Ω max at IZ = 5 mA - determines output impedance and regulation sensitivity to current variation |
| Reverse Current (IR) | 5 μA max at VR = 1 V - ensures low leakage in standby mode before breakdown onset |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - sets conduction loss during forward-biased operation |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C - establishes maximum continuous DC power handling on standard PCB layout |
| Junction Temperature (Tj) | 150 °C max - defines upper thermal limit for reliable long-term operation |
| AEC-Q101 Qualified | Yes - validated for automotive applications including engine control modules and body electronics |
Pinout & Package
SOD123F surface-mount plastic package: 2-pin, 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; marking bar identifies this terminal for correct PCB orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; reverse-biased during Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood and cabin applications per stress test requirements |
| ±5 % voltage tolerance (C-series) | Enables cost-optimized design where tight regulation is not required, e.g., non-critical biasing |
| 830 mW power rating | Supports higher-current shunt regulation than standard 500 mW Zeners without derating at 25 °C |
| SOD123F footprint | Compatible with high-density layouts and automated reflow assembly using standard IPC-7351B land pattern |
| Low thermal resistance (70 K/W j-sp) | Enables efficient heat transfer to PCB copper, improving reliability in thermally constrained environments |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage reference for LIN bus transceiver biasing and microcontroller reset circuitry in door module ECUs. IC Role / Device Role / Timing Role: Zener diode provides stable 3.6 V reference to set threshold levels and clamp transient spikes on 5 V supply lines. Use Value: AEC-Q101 qualification ensures functional integrity across -40 °C to +125 °C ambient, while 95 Ω rdif maintains accuracy under load variation. |
Use Scenario: Clamping element in 4–20 mA current loop receiver front-end protecting ADC input against overvoltage faults. IC Role / Device Role / Timing Role: Acts as bidirectional transient suppressor and precision voltage limiter between analog input and op-amp buffer stage. Use Value: 5 μA IR at 1 V prevents loading of high-impedance sensor signals, and 3.4–3.8 V VZ range matches common 3.3 V system logic thresholds. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Biasing |
Use Scenario: Secondary-side voltage reference in flyback converter feedback network for USB-C PD adapters. IC Role / Device Role / Timing Role: Sets optocoupler LED current threshold to regulate isolated output voltage via TL431-compatible loop. Use Value: 830 mW Ptot allows direct integration without external series resistor, reducing BOM count and PCB area. |
Use Scenario: Reference voltage source for photodiode amplifier offset trimming in portable ultrasound probe front-ends. IC Role / Device Role / Timing Role: Provides low-drift, low-noise DC bias point for transimpedance amplifier input stage. Use Value: ±5 % tolerance is sufficient for calibration-trimmed systems, and 150 °C Tj rating supports sterilization temperature margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52C3V6-Q | Same SOD123F package and 3.6 V nominal VZ, but ±5 % tolerance (C-series) matches exactly; identical thermal specs and AEC-Q101 qualification | No functional difference - direct form-fit-function replacement with identical marking code B7 | Select when sourcing flexibility is needed across Nexperia's standardized BZT52Cxxx-Q family |
| MMSZ4685T1G | 3.6 V VZ at 5 mA, ±5 % tolerance, SOD-123 package, 500 mW Ptot, not AEC-Q101 qualified | Limited to commercial/industrial use; unsuitable for automotive due to missing stress-test validation | Choose only for cost-sensitive non-automotive designs where 500 mW rating suffices and qualification is not required |
Compared with BZT52H-C3V6-QX, BZT52C3V6-Q offers identical performance and qualification with interchangeable marking, while MMSZ4685T1G trades automotive compliance and 66 % higher power rating for lower unit cost in non-automotive contexts.
Availability
BZT52H-C3V6-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, consumer power adapter feedback networks, and medical diagnostic equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT52H-C3V6-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 essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
BZT52H-C3V6-QX belongs to the BZT52H-Q series of AEC-Q101-qualified Zener diodes designed specifically for robust voltage regulation in harsh automotive environments and high-reliability industrial systems.
FAQ
What is the maximum reverse current at 3.0 V for BZT52H-C3V6-QX?
The maximum reverse current at VR = 3.0 V is 5 μA, measured at Tj = 25 °C. This value reflects the device's low-leakage behavior below its nominal 3.6 V breakdown voltage and ensures minimal loading of upstream circuitry in pre-breakdown operation.
Can BZT52H-C3V6-QX be used in place of a 3.3 V Zener diode?
No - its nominal Zener voltage is 3.6 V with a guaranteed range of 3.40 V to 3.80 V at 5 mA, making it unsuitable as a direct substitute for a true 3.3 V part. Using it in a 3.3 V system may cause overvoltage on downstream logic or exceed safe operating margins.
What is the thermal resistance from junction to solder point (Rth(j-sp))?
Rth(j-sp) is 70 K/W when mounted on an FR4 PCB with a 1 cm² cathode pad. This value enables accurate thermal modeling of power dissipation in compact layouts and confirms suitability for applications with limited airflow and moderate ambient temperatures.
Is the SOD123F package compatible with standard reflow profiles?
Yes - Nexperia specifies reflow soldering as the only recommended method, and the SOD123F outline complies with IPC-7351B standards. The package withstands peak temperatures up to 260 °C for 10 seconds, matching industry-standard lead-free reflow profiles without delamination or solder joint failure.
BZT52H-C3V6-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):
- 3.6 V
- Tolerance:
- ±5.56%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 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-C3V6-QX FAQ
1.How can I place an order for BZT52H-C3V6-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-C3V6-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-C3V6-QX reliable?
The price and inventory of BZT52H-C3V6-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-C3V6-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-C3V6-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-C3V6-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-C3V6-QX?
BZT52H-C3V6-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-C3V6-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-C3V6-QX?
For technical support, including BZT52H-C3V6-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-C3V6-QX requirements.
6.How does Aetrix verify that BZT52H-C3V6-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-C3V6-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-C3V6-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-C3V6-QX?
All BZT52H-C3V6-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-C3V6-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-C3V6-QX part is unused and in its original packaging.
Return procedure for BZT52H-C3V6-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52H-C3V6-QX Tags
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