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Nexperia USA Inc. BZT52H-C16-QX
- Part No.:
- BZT52H-C16-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52H-C16-QX.pdf
- Description:
- DIODE ZENER 16.2V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:3,489
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Product details
Overview
BZT52H-C16-QX from Nexperia is a 16 V ±5 % tolerance Zener diode in SOD123F package, rated for 830 mW total power dissipation at 25 °C ambient, with 170 Ω typical differential resistance at IZ = 5 mA and 11.2 mV/K temperature coefficient - used for precision voltage reference and overvoltage protection in automotive body control modules.
For engineers reviewing the BZT52H-C16-QX datasheet, BZT52H-C16-QX pinout, BZT52H-C16-QX application, or BZT52H-C16-QX equivalent, this page delivers verified Zener voltage, thermal resistance, reverse current limits, AEC-Q101 qualification status, and automotive-grade mounting guidance - all confirmed from Nexperia's official Rev. 1 product data sheet.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable 16 V regulation across load and line variations, with specified test current of 5 mA and maximum reverse current of 20 μA at VR = 13.6 V. Its negative temperature coefficient (−11.2 mV/K) enables predictable drift compensation in temperature-sensitive circuits.
The device uses planar epitaxial construction for low noise and high reliability, qualified per AEC-Q101 for automotive use, and features a cathode-marked SOD123F package optimized for reflow soldering on FR4 PCBs with 1 cm² cathode pad for thermal management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.3 V to 17.1 V at IZ = 5 mA - defines regulation band for stable reference under nominal bias |
| Tolerance | ±5 % - determines worst-case voltage deviation in production designs requiring cost-optimized tolerance |
| Differential Resistance (rdif) | 170 Ω max at IZ = 5 mA - quantifies dynamic impedance affecting regulation accuracy under varying load |
| Reverse Current (IR) | 20 μA max at VR = 13.6 V - sets leakage threshold for low-power standby circuits |
| Total Power Dissipation (Ptot) | 830 mW at Tamb ≤ 25 °C with 1 cm² cathode pad - establishes thermal derating baseline for PCB layout |
| Thermal Resistance (Rth(j-sp)) | 70 K/W junction-to-solder-point - enables thermal modeling of solder joint as primary heat path |
| AEC-Q101 Qualified | Yes - confirms suitability for automotive applications including engine control, lighting, and infotainment power rails |
Pinout & Package
SOD123F surface-mount plastic package: 2-terminal, flat lead, cathode-bar marked, dimensions 3.6 mm × 1.6 mm × 1.0 mm (L × W × H), designed for reflow-only assembly on FR4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; carries reverse-biased current during regulation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path enabling Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under stress conditions including HTOL, TC, and ESD - eliminates need for additional qualification testing |
| ±5 % voltage tolerance | Cost-optimized alternative to tighter-tolerance variants while maintaining functional stability in non-critical reference paths |
| 830 mW power rating | Enables regulation in higher-current auxiliary rails (e.g., 50 mA @ 16 V) when thermally managed with 1 cm² cathode pad |
| 170 Ω differential resistance | Supports <1 % output variation across 10–100 % load range in feedback divider networks |
| SOD123F footprint | Compatible with standard 2.9 mm × 1.6 mm reflow land pattern - reduces layout redesign vs. legacy SOD-123 |
Applications
| Automotive Body Control Unit (BCU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating 16 V supply rail for LIN transceiver ICs and door module microcontrollers. IC Role / Device Role: Voltage reference and overvoltage clamp protecting downstream logic from battery transients. Use Value: Maintains stable 16 V despite ±30 % battery swing (9–16 V), with AEC-Q101 assurance for 15-year vehicle life. |
Use Scenario: Providing precise 16 V reference for 4–20 mA loop transmitter DACs in process automation. IC Role / Device Role: Shunt regulator establishing known voltage node for current-source biasing and ADC reference scaling. Use Value: 170 Ω rdif ensures <0.5 % error contribution to 12-bit measurement accuracy across 0–70 °C ambient. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Bias Supply |
Use Scenario: Secondary-side voltage sensing in isolated flyback converters delivering 16 V to USB-C PD controllers. IC Role / Device Role: Zener-based optocoupler feedback reference setting output voltage via TL431-like topology. Use Value: ±5 % tolerance aligns with Class II adapter efficiency requirements while minimizing bill-of-materials cost. |
Use Scenario: Generating stable 16 V bias for photodiode transimpedance amplifiers in portable ultrasound front-ends. IC Role / Device Role: Low-noise shunt regulator supplying clean analog rail independent of digital switching noise. Use Value: 20 μA IR at 13.6 V prevents signal offset drift in picoamp-level current measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52H-B16-Q | ±2 % tolerance, 110 Ω rdif, same SOD123F package | Higher precision required in feedback loops where 1 % output stability is mandatory | Select when tighter voltage control outweighs cost sensitivity and thermal margin is constrained |
| MMSZ5245B-TP | 16 V ±5 %, 1.5 W Ptot, SOD-123 package, no AEC-Q101 | Higher power handling needed for surge clamping; non-automotive qualification | Choose for industrial power supplies where 1.5 W surge capability is critical and automotive compliance is not required |
Compared with BZT52H-C16-QX, the BZT52H-B16-Q offers improved regulation accuracy but reduced thermal margin due to lower power rating, while MMSZ5245B-TP provides higher surge robustness without automotive qualification - making BZT52H-C16-QX optimal for cost-sensitive, thermally constrained automotive BCU designs.
Availability
BZT52H-C16-QX is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and consumer power adapter designs requiring stable component supply with AEC-Q101 assurance and SOD123F footprint compatibility.
Supply support for BZT52H-C16-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 discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
The BZT52H-Q series belongs to Nexperia's automotive Zener diode product line, engineered specifically for voltage regulation and transient suppression in harsh-environment automotive subsystems such as body electronics and power distribution units.
FAQ
What is the maximum reverse voltage (VR) before significant leakage in BZT52H-C16-QX?
At VR = 13.6 V, reverse current is guaranteed ≤20 μA; beyond this, leakage rises nonlinearly - for example, at 15.3 V (VZ min), current reaches ~5 mA, entering full Zener conduction. This threshold defines the safe operating limit for pre-regulation blocking applications.
How does thermal resistance impact derating above 25 °C ambient?
With Rth(j-sp) = 70 K/W, junction temperature rise is 70 × Pdiss. At 85 °C ambient, maximum allowable power drops to 0.93 W × (150 − 85)/70 ≈ 430 mW - requiring PCB copper area optimization or airflow to sustain regulation performance.
Is the SOD123F package compatible with standard SOD-123 reflow footprints?
No - SOD123F has narrower body (1.6 mm vs. 2.7 mm) and shorter leads (1.5 mm vs. 2.5 mm). Its recommended land pattern is 2.9 mm × 1.6 mm, versus 3.4 mm × 2.5 mm for SOD-123. Using legacy footprints risks insufficient solder fillet and mechanical reliability issues.
What is the non-repetitive peak reverse current (IZSM) rating and its test condition?
IZSM = 1.5 A for BZT52H-C16-QX, tested at tp = 100 μs square wave, Tamb = 25 °C, prior to surge. This supports transient suppression of ISO 7637-2 Pulse 1/2a events in 12 V automotive systems when combined with series impedance.
BZT52H-C16-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):
- 16.2 V
- Tolerance:
- ±5.56%
- Power - Max:
- 375 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11.2 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-C16-QX FAQ
1.How can I place an order for BZT52H-C16-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52H-C16-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-C16-QX reliable?
The price and inventory of BZT52H-C16-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-C16-QX is usually 5 days.
3.What payment methods are accepted for BZT52H-C16-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52H-C16-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52H-C16-QX?
BZT52H-C16-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52H-C16-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-C16-QX?
For technical support, including BZT52H-C16-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52H-C16-QX requirements.
6.How does Aetrix verify that BZT52H-C16-QX is sourced from the original manufacturer or authorized distributors?
All BZT52H-C16-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-C16-QX meets industry standards.
7.What is the process for return or replacement of BZT52H-C16-QX?
All BZT52H-C16-QX units undergo pre-shipment inspection (PSI). If there is an issue with BZT52H-C16-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-C16-QX part is unused and in its original packaging.
Return procedure for BZT52H-C16-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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