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Diodes Incorporated BZT52C3V0Q-7-F
- Part No.:
- BZT52C3V0Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C3V0Q-7-F.pdf
- Description:
- DIODE ZENER 3V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
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Product details
Overview
BZT52C3V0Q-7-F from Diodes Incorporated is an AEC-Q101 qualified surface-mount Zener diode with a nominal zener voltage of 3.0 V (min 2.8 V, max 3.2 V), 500 mW power dissipation at TL = +75°C, and 370 mW at TA = +25°C, used for precision voltage regulation and overvoltage protection in automotive power rails and sensor interface circuits.
For engineers reviewing the BZT52C3V0Q-7-F datasheet, BZT52C3V0Q-7-F pinout, BZT52C3V0Q-7-F application, or BZT52C3V0Q-7-F equivalent, key selection criteria include zener voltage tolerance (±3.3%), low dynamic impedance (95 Ω @ 5 mA), temperature coefficient (–3.5 to 0 mV/°C), reverse current (10 µA @ VR = 1.0 V), and SOD123 automotive-grade packaging.
Technical Context
This Zener diode operates in reverse breakdown mode with a tightly controlled 3.0 V regulation point, specified at 5 mA test current and validated across –65°C to +150°C operating temperature range. Its planar die construction ensures stable voltage reference performance under thermal cycling and mechanical stress.
The device exhibits low thermal resistance (RθJL = 150 °C/W) and is optimized for automated SMT assembly on FR-4 PCBs with 1-inch copper pads. It meets AEC-Q101 requirements for high-reliability automotive applications including engine control units and body electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.0 V nominal (2.8–3.2 V range @ IZT = 5 mA); enables stable 3.3 V rail clamping or reference generation |
| Power Dissipation | 370 mW @ TA = +25°C; derates linearly to 500 mW @ TL = +75°C per junction-to-lead thermal path |
| Zener Impedance | 95 Ω @ 1 kHz, 5 mA; ensures minimal output voltage variation under load transients |
| Reverse Current | 10 µA @ VR = 1.0 V; guarantees low leakage in standby and battery-backed circuits |
| Temperature Coefficient | –3.5 to 0 mV/°C; supports predictable drift behavior in automotive ambient temperature swings |
| Package | SOD123; 2-pin surface-mount outline with cathode band marking and 0.010 g mass |
Pinout & Package
Package: SOD123 - molded plastic case, UL 94V-0 rated, matte tin-plated alloy 42 leadframe, cathode band polarity marking, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during regulation operation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to protected node or voltage reference point; marked by band on package |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood and chassis applications requiring high reliability and extended temperature operation |
| Planar die construction | Delivers consistent zener voltage distribution and improved long-term stability vs. diffused-junction alternatives |
| Lead-free & halogen-free | Complies with RoHS 2 (2011/65/EU) and Diodes Inc.'s "Green" definition (<900 ppm Br/Cl, <1000 ppm Sb) |
| Automated assembly compatibility | SOD123 footprint and matte tin finish support high-yield reflow soldering without tombstoning or dewetting |
Applications
| Engine Control Unit (ECU) Power Monitoring | Automotive Cabin Sensor Interface |
|---|---|
Use Scenario: Monitoring 5 V supply rail integrity in engine control modules using comparator-based undervoltage detection. IC Role / Device Role / Timing Role: Zener reference for comparator threshold setting and rail clamping during load dump events. Use Value: Tight 3.0 V ±3.3% tolerance ensures accurate trip point alignment with microcontroller reset thresholds. |
Use Scenario: Providing stable bias voltage to analog-output cabin temperature and humidity sensors. IC Role / Device Role / Timing Role: Low-leakage (10 µA @ 1 V) voltage reference source for sensor excitation and ADC reference scaling. Use Value: Minimal reverse current prevents sensor signal corruption in low-power sleep modes. |
| Body Control Module (BCM) IO Protection | ADAS Camera Power Sequencing |
Use Scenario: Clamping transient spikes on LIN bus transceiver I/O lines exposed to ESD and load dump. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp protecting transceiver input pins from >100 V transients. Use Value: 500 mW peak power rating sustains short-duration surges without degradation in automotive environments. |
Use Scenario: Regulating auxiliary 3.3 V supply for image signal processor startup sequencing in rear-view cameras. IC Role / Device Role / Timing Role: Precision 3.0 V reference for power-good monitoring and reset assertion timing. Use Value: –3.5 to 0 mV/°C TC ensures reliable reset timing across –40°C to +125°C camera operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ3V0T1G | Same 3.0 V nominal, but ±5% tolerance (2.85–3.15 V); 350 mW PD @ TA = +25°C; SOD123 package | Lacks AEC-Q101 qualification; suitable for commercial-grade consumer or industrial systems only | Select when automotive qualification is not required and tighter cost control is prioritized |
| BZX384-C3V0 | 3.0 V nominal, ±5% tolerance; 300 mW PD; SOD323 package (smaller footprint, higher thermal resistance) | Higher RθJA (450 °C/W) limits power handling in compact layouts; no AEC-Q101 rating | Choose for space-constrained PCBs where automotive reliability is not mandated |
Compared with MMSZ3V0T1G and BZX384-C3V0, BZT52C3V0Q-7-F delivers superior automotive-grade reliability, tighter voltage tolerance, and higher thermal capability-making it the preferred choice for safety-critical vehicle subsystems requiring long-term stability under thermal stress.
Availability
BZT52C3V0Q-7-F is available at Aetrix Electronics and suitable for automotive engine control units, body electronics modules, ADAS camera power systems, and sensor interface circuits requiring stable component supply with full traceability and lifecycle continuity.
Supply support for BZT52C3V0Q-7-F 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 IATF 16949 certified operations.
The BZT52C series belongs to Diodes' automotive-qualified Zener diode product line, designed specifically for voltage regulation, overvoltage protection, and reference applications in harsh-environment vehicle electronics.
FAQ
What is the maximum reverse voltage (VR) at which BZT52C3V0Q-7-F guarantees ≤10 µA leakage?
The datasheet specifies IR ≤ 10 µA at VR = 1.0 V. This value is measured under standard conditions (TA = +25°C) and defines the upper limit of reverse-biased leakage before entering the zener breakdown region. It is critical for low-power sensor biasing and standby-mode integrity.
Can BZT52C3V0Q-7-F be used as a substitute for a 3.3 V Zener diode in a voltage reference circuit?
No-it is rated for 3.0 V nominal (2.8–3.2 V), not 3.3 V. Using it in place of a 3.3 V part would result in ~0.3 V undershoot, potentially causing improper reset assertion or comparator mis-triggering. The BZT52C3V3Q-7-F variant is the correct 3.3 V option.
Does the "Q" in BZT52C3V0Q-7-F indicate AEC-Q101 qualification?
Yes-the "Q" suffix explicitly denotes AEC-Q101 qualification per Diodes Incorporated's ordering nomenclature. This distinguishes it from commercial-grade variants (e.g., BZT52C3V0-7-F) and confirms compliance with stress tests including HTGB, HTRB, and temperature cycling.
What is the thermal resistance from junction to ambient (RθJA) for BZT52C3V0Q-7-F on a standard FR-4 board?
RθJA is 338 °C/W when mounted on an FR-4 PCB with a 1-inch copper pad layout, as defined in Note 8 of the datasheet. This value governs power derating above +25°C ambient and must be applied when calculating safe operating current at elevated temperatures.
BZT52C3V0Q-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3 V
- Tolerance:
- ±6.67%
- Power - Max:
- 370 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C3V0Q-7-F FAQ
1.How can I place an order for BZT52C3V0Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C3V0Q-7-F 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 BZT52C3V0Q-7-F reliable?
The price and inventory of BZT52C3V0Q-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C3V0Q-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C3V0Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C3V0Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C3V0Q-7-F?
BZT52C3V0Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C3V0Q-7-F 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 BZT52C3V0Q-7-F?
For technical support, including BZT52C3V0Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C3V0Q-7-F requirements.
6.How does Aetrix verify that BZT52C3V0Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C3V0Q-7-F 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 BZT52C3V0Q-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C3V0Q-7-F?
All BZT52C3V0Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C3V0Q-7-F, 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 BZT52C3V0Q-7-F part is unused and in its original packaging.
Return procedure for BZT52C3V0Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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