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Diodes Incorporated BZT52HC16WF-7
- Part No.:
- BZT52HC16WF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52HC16WF-7.pdf
- Description:
- DIODE ZENER 16V 375MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:1,900
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Product details
Overview
BZT52HC16WF-7 from Diodes Incorporated is a surface-mount 16V Zener diode in SOD123F package, rated for 375 mW power dissipation on standard FR-4 PCB and 830 mW with enhanced thermal pad, with ±5% zener voltage tolerance (15.3–17.1 V), 20 Ω dynamic impedance at 5 mA test current, and 0.05 µA maximum reverse leakage at 11.2 V. It serves as precision voltage reference and overvoltage clamp in low-power analog sensing circuits.
For engineers reviewing the BZT52HC16WF-7 datasheet, BZT52HC16WF-7 pinout, BZT52HC16WF-7 application, or BZT52HC16WF-7 equivalent, key selection criteria include zener voltage accuracy, thermal resistance under real board layout conditions, cathode-band polarity marking, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its 10.4–14.0 mV/°C positive temperature coefficient ensures predictable drift above 125°C, and its 75 pF capacitance at 1 MHz supports use in low-frequency regulation without signal coupling concerns.
The device uses a planar epitaxial junction structure optimized for low leakage and tight voltage distribution. Its SOD123F package features a flat lead design with matte tin annealed terminals, enabling reliable soldering per MIL-STD-202 and compatibility with automated pick-and-place systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.3–17.1 V at 5 mA - defines clamping threshold for overvoltage protection in 12–15 V rail monitoring |
| Power Dissipation (PD) | 375 mW (FR-4, min pad) / 830 mW (1 cm² cathode pad) - sets max continuous power handling in compact PCB layouts |
| Zener Impedance (ZZT) | 20 Ω at IZT = 5 mA - determines output voltage deviation under load transients up to ±10 mA |
| Reverse Leakage (IR) | 0.05 µA at VR = 11.2 V - ensures negligible current draw in standby mode of battery-powered sensors |
| Thermal Resistance (RθJA) | 330 °C/W (min pad) / 150 °C/W (1 cm² pad) - quantifies junction-to-ambient heat rise under steady-state operation |
| Capacitance (CT) | 75 pF at f = 1 MHz, VR = 0 V - limits high-frequency noise coupling in signal conditioning paths |
| Temperature Coefficient | +10.4 to +14.0 mV/°C at IZT = 5 mA - enables predictable voltage shift compensation in wide-temperature industrial environments |
Pinout & Package
Package: SOD123F (Type B), molded plastic case with UL 94V-0 flammability rating, 0.015 g weight, cathode band polarity marking, and matte tin–annealed copper alloy leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to system ground or lower-potential rail; forms reference point for reverse-biased operation |
| Cathode | Reverse-bias input / regulated output node | Connected to voltage rail being monitored or clamped; carries full zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including engine control modules and body electronics requiring high-reliability discrete components |
| SOD123F flat-lead package | Enables 0.8 mm profile height and improved thermal transfer vs. legacy SOD-123, supporting dense PCB layouts |
| Halogen- and antimony-free "Green" compound | Meets <900 ppm Br, <900 ppm Cl (<1500 ppm total Br+Cl), and <1000 ppm Sb - compliant with global environmental directives |
| Moisture Sensitivity Level 1 | Zero bake requirement prior to reflow; safe for standard SMT assembly without floor-life restrictions |
Applications
| Automotive Cabin Sensors | Industrial Temperature Transmitters |
|---|---|
|
Use Scenario: Voltage reference for 4–20 mA loop-powered RTD signal conditioners in HVAC control units. IC Role / Device Role / Timing Role: Zener reference diode providing stable 16 V bias for op-amp supply and ADC reference scaling. Use Value: Tight 5% VZ tolerance and low 0.05 µA leakage ensure <0.1% full-scale error over −40°C to +125°C ambient range. |
Use Scenario: Overvoltage clamp protecting microcontroller GPIO pins from transient spikes on 12 V supply rails. IC Role / Device Role / Timing Role: Reverse-biased Zener acting as shunt regulator to limit voltage to ≤17.1 V during load dump events. Use Value: 830 mW power rating with 1 cm² thermal pad sustains 100 ms 24 V transients without degradation. |
| Medical Patient Monitor Front-Ends | Smart Meter Power Supply Rails |
|
Use Scenario: Precision voltage reference for analog front-end gain calibration in portable ECG amplifiers. IC Role / Device Role / Timing Role: Stable 16 V reference source for DAC-based offset trimming circuitry. Use Value: +10.4 to +14.0 mV/°C TC allows predictable correction algorithms, reducing calibration points needed in production test. |
Use Scenario: Secondary regulation stage in isolated flyback auxiliary supply for metrology ICs. IC Role / Device Role / Timing Role: Zener clamp stabilizing 15 V bias rail feeding real-time clock and communication interface. Use Value: 75 pF capacitance avoids interference with 32.768 kHz crystal oscillator signals routed nearby on same PCB layer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5245B-TP (Micro Commercial) | Same 16 V nominal zener voltage, but ±5% tolerance only at 20 mA; 30 Ω ZZT; no AEC-Q101 qualification | Lacks automotive qualification; higher impedance reduces regulation accuracy under variable load | Acceptable for cost-sensitive consumer power supplies where AEC-Q101 is not required |
| BZX84-C16 (Nexperia) | 16 V zener, ±5% at 5 mA, but SOT23 package; 40 Ω ZZT; RθJA = 375 °C/W on standard pad | Higher thermal resistance limits power handling in thermally constrained designs | Preferred when board space is limited and thermal performance is secondary to footprint size |
Compared with MMSZ5245B-TP and BZX84-C16, BZT52HC16WF-7 delivers superior thermal performance (150 °C/W with thermal pad), tighter low-current impedance (20 Ω), and AEC-Q101 validation-making it optimal for automotive and industrial applications demanding long-term stability and reliability.
Availability
BZT52HC16WF-7 is available at Aetrix Electronics and suitable for automotive cabin sensors, industrial temperature transmitters, medical patient monitor front-ends, and smart meter power supply rails requiring stable component supply and AEC-Q101 compliance.
Supply support for BZT52HC16WF-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.
The BZT52HC series targets high-precision, high-reliability Zener regulation in space-constrained and thermally demanding applications, with emphasis on AEC-Q101 qualification and green material compliance.
FAQ
What is the maximum reverse voltage before breakdown for BZT52HC16WF-7?
The BZT52HC16WF-7 exhibits sharp reverse breakdown between 15.3 V and 17.1 V at 5 mA test current, with guaranteed regulation starting at 15.3 V. Below 11.2 V, reverse leakage remains ≤0.05 µA, confirming stable non-conducting behavior in standby.
Can BZT52HC16WF-7 be used in place of a 15 V Zener diode?
No-it is specifically rated for 16 V nominal operation (15.3–17.1 V range). Substituting for a 15 V Zener would cause ~1 V higher clamping voltage, potentially exceeding downstream component ratings; use BZT52HC15WF-7 instead for 15 V applications.
Does BZT52HC16WF-7 require derating at elevated ambient temperatures?
Yes-its power dissipation must be linearly derated above 25°C ambient. With standard FR-4 mounting, it drops to zero at 150°C (375 mW ÷ 330 °C/W = 1.14°C/mW); with 1 cm² thermal pad, full 830 mW is usable up to 125°C ambient.
Is the cathode band orientation consistent across all BZT52HC-series devices?
Yes-the cathode band is always located at the same end of the SOD123F package, aligned with the marking code (WK for BZT52HC16WF-7), and matches Diodes Incorporated's standardized SOD123F mechanical drawing and tape-and-reel orientation guide.
BZT52HC16WF-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±5.63%
- 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:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52HC16WF-7 FAQ
1.How can I place an order for BZT52HC16WF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52HC16WF-7 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 BZT52HC16WF-7 reliable?
The price and inventory of BZT52HC16WF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52HC16WF-7 is usually 5 days.
3.What payment methods are accepted for BZT52HC16WF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52HC16WF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52HC16WF-7?
BZT52HC16WF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52HC16WF-7 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 BZT52HC16WF-7?
For technical support, including BZT52HC16WF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52HC16WF-7 requirements.
6.How does Aetrix verify that BZT52HC16WF-7 is sourced from the original manufacturer or authorized distributors?
All BZT52HC16WF-7 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 BZT52HC16WF-7 meets industry standards.
7.What is the process for return or replacement of BZT52HC16WF-7?
All BZT52HC16WF-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52HC16WF-7, 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 BZT52HC16WF-7 part is unused and in its original packaging.
Return procedure for BZT52HC16WF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZT52HC16WF-7 Tags
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