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Diodes Incorporated BZT52C16-7
- Part No.:
- BZT52C16-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C16-7.pdf
- Description:
- DIODE ZENER 16V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,298
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Product details
Overview
BZT52C16-7 from Diodes Incorporated is a surface-mount 16 V Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with ±5% tolerance (15.3–17.1 V), 40 Ω dynamic impedance at 5 mA test current, and <0.1 µA reverse leakage at 12.8 V - used for precision voltage regulation and overvoltage protection in low-power DC rails.
For engineers reviewing the BZT52C16-7 datasheet, BZT52C16-7 pinout, BZT52C16-7 application, or BZT52C16-7 equivalent, key selection factors include its 16 V nominal Zener voltage with tight ±5% tolerance, 40 Ω Zener impedance at 5 mA, thermal resistance of 338 °C/W (junction-to-ambient), SOD123 footprint compatibility, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its planar die construction ensures consistent breakdown characteristics and low leakage, while the SOD123 package supports automated assembly and delivers thermal performance validated per J-STD-020 Level 1 moisture sensitivity.
The device exhibits a positive temperature coefficient of +11.2 mV/°C near 16 V, enabling predictable drift compensation in multi-diode references. It is characterized at 5 mA test current (IZT), with knee current (IZK) of 0.1 mA and maximum reverse current (IR) of 0.1 µA at VR = 12.8 V - confirming sharp knee behavior suitable for low-current regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 16 V nominal, 15.3–17.1 V range at 5 mA - defines precise clamping threshold for 15–17 V rail protection |
| Power Dissipation (PD) | 370 mW at TA = +25°C - sets maximum continuous power in standard PCB layout without heatsinking |
| Zener Impedance (ZZT) | 40 Ω at IZT = 5 mA - determines output voltage variation under load changes up to ±200 mV per ±8 mA current shift |
| Reverse Leakage (IR) | 0.1 µA at VR = 12.8 V - ensures minimal quiescent current draw in standby voltage-monitoring circuits |
| Thermal Resistance (RθJA) | 338 °C/W - indicates ~125°C junction rise above ambient at full 370 mW dissipation on FR-4 board |
| Temperature Coefficient | +11.2 mV/°C - enables predictable voltage drift for temperature-compensated reference designs |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking, 1.55 mm width, 2.65 mm length, 1.05 mm height, and matte tin-plated Alloy 42 leadframe for RoHS-compliant solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node; reverse bias applied between cathode and anode to activate regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Marked by band; supplies regulated 16 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable Zener voltage distribution and low parametric spread across production lots |
| AEC-Q101 qualification | Validates reliability for automotive electronics including infotainment power supervisors and body control modules |
| SOD123 footprint | Enables high-density PCB layouts and compatibility with industry-standard pick-and-place equipment |
| Halogen- and antimony-free "Green" compound | Meets strict environmental compliance (Br+Cl <1500 ppm, Sb <1000 ppm) without compromising thermal stability |
Applications
| Power Supply Voltage Clamp | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Clamping transient spikes on 15 V auxiliary power rail in industrial PLC I/O module. IC Role / Device Role / Timing Role: Zener diode acts as shunt regulator to limit rail voltage to ≤17.1 V during ESD or load-dump events. Use Value: Prevents damage to downstream 15 V LDOs and logic ICs by diverting excess current above 16 V threshold with <0.1 µA leakage at 12.8 V. |
Use Scenario: Generating clean reset signal for ARM Cortex-M0 MCU operating from 16 V battery input via linear regulator. IC Role / Device Role / Timing Role: Provides stable 16 V reference to reset supervisor IC (e.g., MAX809) that triggers system reset below 14.4 V. Use Value: Enables accurate brown-out detection with ±5% Zener tolerance and +11.2 mV/°C TC for temperature-aware reset thresholds. |
| Automotive Sensor Bias Reference | Low-Power IoT Node Protection |
Use Scenario: Supplying regulated bias voltage to analog pressure sensor in engine control unit (ECU). IC Role / Device Role / Timing Role: Zener diode establishes fixed 16 V reference for sensor excitation, decoupled from noisy 12 V vehicle battery. Use Value: Delivers <0.1 µA leakage and 40 Ω impedance to minimize sensor offset drift and support AEC-Q101-compliant operation. |
Use Scenario: Overvoltage protection for Li-ion battery-charged 16 V rail in smart meter communication module. IC Role / Device Role / Timing Role: Shunt limiter activated only during fault conditions (e.g., charger malfunction), otherwise idle. Use Value: Ensures <0.1 µA standby current preserves battery life while clamping transients within 15.3–17.1 V window per AEC-Q101 stress testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5245B-7-F | Same 16 V nominal, but ±5% tolerance, 300 mW PD at TA = +25°C, 30 Ω ZZT at 5 mA, SOT-23 package | Smaller SOT-23 footprint; higher thermal resistance (400 °C/W) limits power handling on dense boards | Select when board space is constrained and peak power remains below 300 mW |
| BZX84-C16 | 16 V nominal, ±5%, 350 mW PD, 40 Ω ZZT, SOT-23 package, no AEC-Q101 qualification | Lacks automotive qualification; higher RθJA (450 °C/W); suitable for commercial-grade consumer devices only | Choose for cost-sensitive non-automotive applications where AEC-Q101 is not required |
Compared with MMBZ5245B-7-F and BZX84-C16, BZT52C16-7 offers superior thermal performance (338 °C/W vs. ≥400 °C/W), AEC-Q101 qualification, and identical Zener impedance - making it optimal for automotive and industrial systems requiring long-term reliability under thermal stress.
Availability
BZT52C16-7 is available at Aetrix Electronics and suitable for automotive power supervision, industrial sensor biasing, microcontroller reset generation, and low-power IoT voltage clamping requiring stable component supply across extended temperature ranges and lifecycle commitments.
Supply support for BZT52C16-7 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 with ISO/TS 16949 and ISO 14001 certifications.
The BZT52 series belongs to Diodes' general-purpose Zener diode product line, designed specifically for cost-effective, high-volume voltage regulation and protection in space-constrained surface-mount applications requiring AEC-Q101 compliance.
FAQ
What is the maximum continuous power dissipation for BZT52C16-7 at room temperature?
The BZT52C16-7 is rated for 370 mW power dissipation at TA = +25°C when mounted on an FR-4 PCB with a 1-inch copper pad layout. This value drops to 500 mW only at lead temperature TL = +75°C, reflecting its thermal design for reliable operation in compact, unheatsinked layouts.
Does BZT52C16-7 have automotive qualification?
Yes - BZT52C16-7 is qualified to AEC-Q101 standards for high-reliability automotive applications. This includes stress testing for temperature cycling, humidity bias, and mechanical shock, ensuring robust performance in engine control units, body electronics, and ADAS subsystems.
How does the temperature coefficient affect voltage regulation accuracy?
The BZT52C16-7 has a temperature coefficient of +11.2 mV/°C, meaning its Zener voltage increases by approximately 11.2 mV per degree Celsius rise. At 85°C ambient, this results in a +0.67 V shift from 25°C - critical for precision references requiring external compensation or TC-matched diode pairs.
Can BZT52C16-7 be used in place of a 15 V Zener diode?
No - BZT52C16-7 is specified for 16 V nominal Zener voltage (15.3–17.1 V range). Substituting it for a 15 V part (e.g., BZT52C15) introduces a minimum 0.3 V higher clamping threshold, risking overvoltage exposure to downstream 15 V-rated components unless circuit margins explicitly accommodate the shift.
BZT52C16-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 16 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 11.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C16-7 FAQ
1.How can I place an order for BZT52C16-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C16-7 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 BZT52C16-7 reliable?
The price and inventory of BZT52C16-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C16-7 is usually 5 days.
3.What payment methods are accepted for BZT52C16-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C16-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C16-7?
BZT52C16-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C16-7 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 BZT52C16-7?
For technical support, including BZT52C16-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C16-7 requirements.
6.How does Aetrix verify that BZT52C16-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C16-7 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 BZT52C16-7 meets industry standards.
7.What is the process for return or replacement of BZT52C16-7?
All BZT52C16-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C16-7, 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 BZT52C16-7 part is unused and in its original packaging.
Return procedure for BZT52C16-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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