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Diodes Incorporated BZT52C5V1Q-7-F
- Part No.:
- BZT52C5V1Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C5V1Q-7-F.pdf
- Description:
- DIODE ZENER 5.1V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:2,275
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Product details
Overview
BZT52C5V1Q-7-F from Diodes Incorporated is an automotive-grade surface-mount Zener diode with a nominal zener voltage of 5.1 V, ±5% tolerance (4.8–5.4 V), 500 mW power dissipation at TL = +75°C, and 370 mW at TA = +25°C. It provides precise voltage regulation in low-power biasing, overvoltage protection, and reference circuits for automotive control modules, sensor interfaces, and power supply supervision.
For engineers reviewing the BZT52C5V1Q-7-F datasheet, BZT52C5V1Q-7-F pinout, BZT52C5V1Q-7-F application, or BZT52C5V1Q-7-F equivalent, this page delivers verified electrical parameters, SOD123 package details, AEC-Q101 qualification status, thermal resistance values (RθJA = 338°C/W, RθJL = 150°C/W), and automotive-grade marking/traceability information.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under controlled current conditions. Its planar die construction ensures consistent breakdown characteristics, while the SOD123 package supports automated assembly and meets UL 94V-0 flammability requirements.
Rated for operation from –65°C to +150°C, it exhibits a negative temperature coefficient of –2.7 mV/°C at IZTC = 5 mA and achieves low dynamic impedance (ZZT = 60 Ω at 5 mA) for tight regulation. Reverse leakage remains ≤2.0 µA at VR = 1.2 V, supporting reliable low-current reference stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.1 V nominal, 4.8–5.4 V range at 5 mA - defines regulated output voltage under standard test conditions |
| Power Dissipation (PD) | 370 mW at TA = +25°C - maximum continuous power before thermal derating begins |
| Zener Impedance (ZZT) | 60 Ω at IZT = 5 mA - low dynamic resistance enables stable regulation under varying load |
| Reverse Leakage (IR) | ≤2.0 µA at VR = 1.2 V - ensures minimal quiescent current in standby/reference modes |
| Thermal Resistance (RθJA) | 338°C/W on FR-4 PCB with 1-inch copper pad - determines junction temperature rise per watt dissipated |
| Temperature Coefficient | –2.7 mV/°C at IZTC = 5 mA - quantifies voltage drift with ambient temperature change |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band polarity marking, 0.010 g weight, UL 94V-0 rated molding compound, and matte tin-plated alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node; forms reference return path in shunt regulator topology |
| Cathode | Reverse-biased breakdown terminal / regulated output node | Connected to higher-potential rail; maintains stable voltage relative to anode during breakdown |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| Green, halogen- and antimony-free | Meets <900 ppm Br/Cl (<1500 ppm total), <1000 ppm Sb - compliant with global environmental directives |
| Planar die construction | Ensures repeatable Zener voltage distribution and improved long-term stability vs. diffused junctions |
| SOD123 footprint compatibility | Standardized 2.65 mm × 1.55 mm outline enables drop-in replacement and PCB layout reuse |
Applications
| Automotive Sensor Biasing | Industrial Power Supply Supervision |
|---|---|
Use Scenario: Providing stable 5.1 V reference for analog sensor signal conditioning in engine coolant temperature or manifold absolute pressure sensors. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precision bias point for op-amp input stages and ADC reference dividers. Use Value: Maintains ±1% regulation over –40°C to +125°C ambient, enabling accurate sensor output scaling despite battery voltage fluctuations. |
Use Scenario: Monitoring 5 V rail integrity in programmable logic controllers and industrial I/O modules. IC Role / Device Role / Timing Role: Overvoltage clamp protecting downstream regulators and microcontrollers from transient surges. Use Value: Activates at 5.4 V max to divert fault current before damage occurs, with <2 µA leakage preserving system standby efficiency. |
| Consumer USB Port Protection | Medical Diagnostic Equipment Reference |
Use Scenario: ESD and overvoltage suppression on 5 V USB VBUS lines in portable medical monitors and handheld devices. IC Role / Device Role / Timing Role: Low-capacitance (≈50 pF) shunt clamp limiting voltage excursions during fast transients. Use Value: Responds within nanoseconds to 8 kV HBM ESD events while adding negligible signal distortion to data lines. |
Use Scenario: Generating stable reference voltage for precision analog front-ends in patient monitoring ECG and pulse oximetry circuits. IC Role / Device Role / Timing Role: Low-drift (–2.7 mV/°C), low-noise voltage reference for high-resolution ADC bias networks. Use Value: Enables <0.1% full-scale accuracy over operating temperature range without active compensation circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5231B-TP (Micro Commercial) | Zener voltage 5.1 V (±5%), PD = 500 mW, RθJA = 350°C/W, no AEC-Q101 qualification | Commercial-grade only; not suitable for automotive environments requiring reliability validation | Select when cost sensitivity outweighs automotive qualification needs and thermal margin allows higher RθJA |
| BZX84-C5V1 (Nexperia) | Zener voltage 5.1 V (±5%), PD = 300 mW, SOT23 package, RθJA = 375°C/W, AEC-Q101 qualified | Lower power rating limits use in sustained 5 mA+ regulation; smaller SOT23 footprint reduces thermal mass | Choose for space-constrained boards where 300 mW suffices and SOT23 layout compatibility exists |
Compared with MMSZ5231B-TP and BZX84-C5V1, BZT52C5V1Q-7-F uniquely combines AEC-Q101 qualification, 370 mW at +25°C, SOD123 thermal performance (RθJA = 338°C/W), and automotive traceability - making it optimal for safety-critical 5.1 V reference designs where reliability and thermal headroom are prioritized.
Availability
BZT52C5V1Q-7-F is available at Aetrix Electronics and suitable for automotive electronic control units, industrial power supervisors, and medical diagnostic equipment requiring stable component supply with full AEC-Q101 compliance and traceable lot-level documentation.
Supply support for BZT52C5V1Q-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 consumer markets.
The BZT52C series belongs to Diodes' automotive-qualified Zener diode product line, designed specifically to deliver stable voltage references and overvoltage protection in harsh-temperature, high-vibration environments such as engine bays and chassis-mounted ECUs.
FAQ
What is the maximum steady-state power dissipation for BZT52C5V1Q-7-F at room temperature?
The device is rated for 370 mW continuous power dissipation at TA = +25°C when mounted on an FR-4 PCB with a 1-inch copper pad. Derating begins linearly above +25°C at 3.0 mW/°C, reaching 0 W at +150°C ambient, per the published power derating curve.
Does BZT52C5V1Q-7-F have automotive qualification?
Yes - the "Q" suffix denotes AEC-Q101 qualification. This part has passed stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life per the AEC-Q101 standard, confirming suitability for automotive under-hood and cabin applications.
How is polarity identified on the SOD123 package?
Polarity is marked by a visible cathode band - a narrow, dark-colored stripe located near one end of the SOD123 body. The terminal adjacent to the band is the cathode; the opposite end is the anode. This matches the standard SOD123 top-view orientation shown in Diodes' package outline drawings.
What is the typical Zener impedance at 5 mA test current?
The typical Zener impedance (ZZT) is 60 Ω at IZT = 5 mA and f = 1 kHz, with a maximum of 480 Ω specified. This low dynamic impedance ensures minimal voltage variation under small-signal load changes, critical for precision reference applications.
BZT52C5V1Q-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):
- 5.1 V
- Tolerance:
- ±5.88%
- Power - Max:
- 370 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 2 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
BZT52C5V1Q-7-F FAQ
1.How can I place an order for BZT52C5V1Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C5V1Q-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 BZT52C5V1Q-7-F reliable?
The price and inventory of BZT52C5V1Q-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 BZT52C5V1Q-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C5V1Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C5V1Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C5V1Q-7-F?
BZT52C5V1Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C5V1Q-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 BZT52C5V1Q-7-F?
For technical support, including BZT52C5V1Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C5V1Q-7-F requirements.
6.How does Aetrix verify that BZT52C5V1Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C5V1Q-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 BZT52C5V1Q-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C5V1Q-7-F?
All BZT52C5V1Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C5V1Q-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 BZT52C5V1Q-7-F part is unused and in its original packaging.
Return procedure for BZT52C5V1Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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