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Diodes Incorporated BZT52C3V6-7
- Part No.:
- BZT52C3V6-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C3V6-7.pdf
- Description:
- DIODE ZENER 3.6V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:9,677
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Product details
Overview
BZT52C3V6-7 from Diodes Incorporated is a surface-mount Zener diode with nominal 3.6 V zener voltage, 5 mA test current, 90 Ω maximum zener impedance at 1 kHz, 500 mW power dissipation (at TL = +75°C), and SOD123 package - used for precision voltage regulation and overvoltage protection in low-power analog circuits, power supply feedback paths, and reference voltage generation.
For engineers reviewing the BZT52C3V6-7 datasheet, BZT52C3V6-7 pinout, BZT52C3V6-7 application, or BZT52C3V6-7 equivalent, key selection criteria include zener voltage tolerance (±5.6%), temperature coefficient (−3.5 to 0 mV/°C), reverse leakage (≤5.0 µA at VR = 1.0 V), thermal resistance (RθJA = 338 °C/W), 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 planar die construction ensures consistent breakdown characteristics, while the SOD123 package enables high-density PCB layouts and compatibility with automated reflow assembly.
The device exhibits a typical zener voltage range of 3.4–3.8 V at 5 mA, with low dynamic impedance (90 Ω max) enabling tight regulation in feedback loops. Its −3.5 to 0 mV/°C temperature coefficient supports predictable drift behavior in ambient ranges from −65°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.6 V nominal, 3.4–3.8 V min/max at 5 mA - defines regulated output voltage in shunt regulator applications |
| Power Dissipation | 500 mW at lead temperature 75°C - sets maximum continuous power handling under thermal derating constraints |
| Zener Impedance (ZZT) | 90 Ω max at 1 kHz, 5 mA - determines regulation sensitivity to current changes in feedback networks |
| Reverse Leakage (IR) | ≤5.0 µA at VR = 1.0 V - limits standby current loss in low-power voltage reference circuits |
| Temperature Coefficient | −3.5 to 0 mV/°C - quantifies voltage drift per degree Celsius, critical for temperature-stable references |
| Package | SOD123 - surface-mount plastic case with cathode band polarity marking and 0.010 g mass |
| AEC-Q101 Qualified | Yes - validated for automotive electronics requiring high-reliability discrete components |
Pinout & Package
SOD123 package: molded plastic case, UL 94V-0 flammability rating, matte tin-plated alloy 42 leadframe, cathode band marking, moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower potential node in shunt regulation configuration |
| Cathode | Zener breakdown terminal / regulated voltage output | Connected to input voltage source; maintains 3.6 V relative to anode during reverse bias operation |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable zener voltage distribution and long-term stability under thermal cycling |
| 500 mW power rating at TL = +75°C | Supports robust operation in compact PCB layouts with limited heatsinking |
| AEC-Q101 qualification | Validates suitability for automotive infotainment, body control, and ADAS subsystems |
| Lead-free & RoHS-compliant | Meets global environmental compliance requirements without compromising solderability or reliability |
| Cathode band polarity marking | Enables unambiguous orientation during automated placement and visual inspection |
Applications
| USB Power Rail Protection | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Clamping transient overvoltage on 5 V USB VBUS lines during hot-plug events or ESD discharge. IC Role / Device Role / Timing Role: Shunt protection device that conducts excess current above 3.6 V to ground, limiting downstream voltage excursion. Use Value: Prevents damage to USB interface ICs by clamping peak voltage to ≤3.8 V with <5 µA leakage at 1 V reverse bias. |
Use Scenario: Generating a stable reset threshold for 3.3 V microcontrollers during power-up and brownout conditions. IC Role / Device Role / Timing Role: Precision voltage reference in RC-based reset generator circuits. Use Value: Delivers ±5.6% zener voltage tolerance and −3.5 mV/°C tempco to ensure reliable reset assertion across −40°C to +85°C. |
| Low-Power Sensor Reference | Industrial Analog Input Protection |
|
Use Scenario: Providing excitation voltage for resistive temperature detectors (RTDs) or bridge sensors in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Low-drift voltage reference source with minimal quiescent current draw. Use Value: Enables sub-10 µA system sleep current via 5.0 µA max IR at 1.0 V reverse bias and 338 °C/W thermal resistance. |
Use Scenario: Protecting 4–20 mA transmitter inputs against field-induced surges and wiring faults. IC Role / Device Role / Timing Role: Front-end overvoltage clamp in signal conditioning stages. Use Value: Absorbs transient energy with 500 mW peak dissipation and withstands −65°C to +150°C operating range in harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5226BS-7-F | Zener voltage 3.6 V, but 200 mW power rating and SOT-23 package - higher thermal resistance (RθJA = 400 °C/W) | Lower power handling limits use in sustained overvoltage scenarios; better suited for signal-level clamping only | Select when board space is constrained and thermal load is <150 mW |
| BZX84-C3V6 | Same 3.6 V zener voltage, but SOT-23 package and 350 mW power rating at TA = 25°C - no AEC-Q101 qualification | Lacks automotive reliability validation; suitable for commercial-grade consumer electronics only | Select for cost-sensitive non-automotive designs where AEC-Q101 is not required |
Compared with MMBZ5226BS-7-F and BZX84-C3V6, BZT52C3V6-7 offers superior power handling (500 mW), lower thermal resistance (338 °C/W), and AEC-Q101 qualification - making it the preferred choice for automotive and industrial applications demanding sustained reliability under thermal stress.
Availability
BZT52C3V6-7 is available at Aetrix Electronics and suitable for USB power protection, microcontroller reset circuits, low-power sensor references, and industrial analog input protection requiring stable component supply and automotive-grade qualification.
Supply support for BZT52C3V6-7 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 BZT52 series belongs to Diodes' general-purpose Zener diode product line, designed specifically for precision voltage regulation and overvoltage protection in space-constrained, thermally demanding applications.
FAQ
What is the maximum reverse voltage (VR) at which BZT52C3V6-7 guarantees ≤5.0 µA leakage?
The datasheet specifies ≤5.0 µA reverse current at VR = 1.0 V. This value is measured under standard conditions (TA = +25°C) and defines the upper limit of leakage in low-power reference applications. Exceeding 1.0 V increases leakage exponentially due to near-breakdown behavior, so design margins must keep VR ≤1.0 V unless operating in regulated breakdown mode.
Can BZT52C3V6-7 be used in place of a 3.3 V Zener diode like BZT52C3V3?
No - BZT52C3V6-7 has a nominal zener voltage of 3.6 V (3.4–3.8 V range), whereas BZT52C3V3 is rated at 3.3 V (3.1–3.5 V). Substituting them alters regulation thresholds by ~90 mV, potentially causing incorrect reset timing or reference errors. Always match zener voltage specifications exactly for precision applications.
Is the SOD123 package compatible with standard reflow soldering profiles?
Yes - the SOD123 package uses matte tin-plated leads qualified per MIL-STD-202, Method 208, and is rated for moisture sensitivity level 1 (J-STD-020). It supports industry-standard lead-free reflow profiles up to 260°C peak temperature, provided the PCB layout follows Diodes' recommended pad dimensions (X = 0.900 mm, Y = 0.950 mm).
Does BZT52C3V6-7 have a specified total capacitance value?
No - the datasheet does not list total capacitance for BZT52C3V6-7 specifically. However, Figure 5 shows typical capacitance vs. nominal zener voltage: at 3.6 V, total capacitance is approximately 45 pF at VR = 1 V and f = 1 MHz. This value is relevant for high-frequency noise filtering and ESD response time in protection circuits.
BZT52C3V6-7 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):
- 3.6 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 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
BZT52C3V6-7 FAQ
1.How can I place an order for BZT52C3V6-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C3V6-7 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 BZT52C3V6-7 reliable?
The price and inventory of BZT52C3V6-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C3V6-7 is usually 5 days.
3.What payment methods are accepted for BZT52C3V6-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C3V6-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C3V6-7?
BZT52C3V6-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C3V6-7 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 BZT52C3V6-7?
For technical support, including BZT52C3V6-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C3V6-7 requirements.
6.How does Aetrix verify that BZT52C3V6-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C3V6-7 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 BZT52C3V6-7 meets industry standards.
7.What is the process for return or replacement of BZT52C3V6-7?
All BZT52C3V6-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C3V6-7, 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 BZT52C3V6-7 part is unused and in its original packaging.
Return procedure for BZT52C3V6-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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