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Diodes Incorporated BZT52C5V1-7-F
- Part No.:
- BZT52C5V1-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C5V1-7-F.pdf
- Description:
- DIODE ZENER 5.1V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:399,879
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Product details
Overview
BZT52C5V1-7-F from Diodes Incorporated is a surface-mount 5.1 V Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with 60 Ω typical Zener impedance at 5 mA test current and ±2.7 mV/°C temperature coefficient - used for precision voltage regulation and overvoltage protection in low-power DC rails.
For engineers reviewing the BZT52C5V1-7-F datasheet, BZT52C5V1-7-F pinout, BZT52C5V1-7-F application, or BZT52C5V1-7-F equivalent, key selection criteria include Zener voltage tolerance (4.8–5.4 V), reverse leakage (1.2 µA @ 3.7 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 reference voltage under varying load and temperature conditions. Its planar die construction ensures consistent Zener characteristics and low dynamic impedance across the 5 mA test current.
The device exhibits a negative temperature coefficient of –2.7 mV/°C, enabling predictable drift compensation in bias networks. It is optimized for automated SMT assembly on FR-4 PCBs with 1-inch copper pad layout per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.1 V nominal, 4.8–5.4 V range @ 5 mA - defines regulated output voltage tolerance in shunt regulator designs |
| Power Dissipation (PD) | 370 mW @ TA = +25°C - sets maximum continuous power handling on standard PCB without heatsinking |
| Zener Impedance (ZZT) | 60 Ω @ 5 mA - determines regulation stiffness and AC ripple rejection capability |
| Reverse Leakage (IR) | 1.2 µA @ VR = 3.7 V - impacts quiescent current draw in low-power standby circuits |
| Temperature Coefficient | –2.7 mV/°C - enables predictable voltage drift modeling across –65°C to +150°C operating range |
| Thermal Resistance (RθJA) | 338 °C/W - indicates junction-to-ambient heat transfer efficiency on standard FR-4 layout |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking, 0.010 g weight, UL 94V-0 flammability rating, and matte tin-plated alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of regulated rail; forms reference ground path in shunt configuration |
| Cathode | Zener breakdown terminal / voltage regulation node | Connected to higher-potential input rail; clamps voltage to 5.1 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics |
| Lead-free & RoHS compliant | Fully EU Directive 2011/65/EU compliant with <900 ppm Br/Cl and <1000 ppm Sb compounds |
| SOD123 footprint | Standardized 2.65 mm × 1.55 mm outline compatible with high-speed pick-and-place equipment |
| Low Zener impedance | 60 Ω typical at 5 mA enables tight voltage regulation under dynamic load transients |
Applications
| USB Power Rail Protection | Microcontroller Reset Circuit |
|---|---|
|
Use Scenario: Clamping 5 V USB supply against ESD-induced overvoltage spikes during hot-plug events. IC Role / Device Role / Timing Role: Shunt voltage clamp protecting downstream LDOs and USB PHY circuitry. Use Value: Limits transient voltage to ≤5.4 V with 1.2 µA leakage, preserving signal integrity and preventing latch-up. |
Use Scenario: Generating precise 5.1 V reference for RC reset timing network in 8-bit MCU systems. IC Role / Device Role / Timing Role: Stable voltage reference defining reset release threshold independent of supply ripple. Use Value: Maintains ±0.3 V regulation window over temperature, ensuring deterministic reset timing across –40°C to +125°C. |
| Automotive Sensor Biasing | Industrial I/O Module Protection |
|
Use Scenario: Providing stable 5.1 V bias for analog sensor front-ends in engine coolant temperature sensors. IC Role / Device Role / Timing Role: Precision voltage reference for Wheatstone bridge excitation and ADC reference scaling. Use Value: AEC-Q101 qualification and –2.7 mV/°C TC enable accurate cold-cranking compensation down to –40°C. |
Use Scenario: Protecting 24 V industrial PLC digital inputs from field-wiring induced surges and back-EMF. IC Role / Device Role / Timing Role: Secondary clamping element in multi-stage TVS architecture, absorbing residual energy after primary MOV. Use Value: 370 mW power rating sustains 100 ms surge pulses while maintaining 5.1 V clamping level for logic-level compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5221BS-7-F | Same 5.1 V Zener voltage but SOT-23 package; 350 mW PD @ TA = +25°C; RθJA = 300 °C/W | Higher board density possible, but lower thermal margin on small pads; not AEC-Q101 qualified | Select for space-constrained consumer PCBs where automotive qualification is unnecessary |
| BZX84-C5V1 | 5.1 V Zener in SOT-23; 300 mW PD; 70 Ω ZZT @ 5 mA; no AEC-Q101 qualification | Limited surge robustness; higher impedance reduces regulation accuracy under load variation | Choose for cost-sensitive industrial controls where extended temperature operation is not required |
Compared with MMBZ5221BS-7-F and BZX84-C5V1, BZT52C5V1-7-F delivers superior thermal performance (338 °C/W vs. 300/350 °C/W), tighter voltage tolerance (±0.3 V vs. ±0.4 V), and automotive-grade reliability - making it optimal for mission-critical 5 V reference and clamp functions.
Availability
BZT52C5V1-7-F is available at Aetrix Electronics and suitable for automotive infotainment power sequencing, industrial sensor signal conditioning, and USB-C peripheral protection requiring stable component supply and long-term lifecycle support.
Supply support for BZT52C5V1-7-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 integrated circuits, specializing in high-reliability components for automotive, industrial, and computing markets.
The BZT52 series belongs to Diodes' general-purpose Zener diode product line, engineered for precision voltage regulation and overvoltage protection in space-constrained, high-volume SMT applications.
FAQ
What is the maximum reverse voltage (VR) this Zener can withstand before breakdown?
The BZT52C5V1-7-F has a nominal Zener voltage of 5.1 V with a guaranteed range of 4.8–5.4 V at 5 mA test current. Breakdown occurs within this range; applying reverse voltage below 4.8 V results in only microamp-level leakage (≤1.2 µA @ 3.7 V), while voltages ≥5.4 V initiate full conduction and power dissipation.
Is this part suitable for use in automotive applications?
Yes - BZT52C5V1-7-F is explicitly qualified to AEC-Q101 standards, tested for high-reliability operation across –65°C to +150°C junction temperature, and manufactured with halogen- and antimony-free "Green" materials meeting automotive supply chain requirements.
How does its thermal resistance affect PCB layout design?
With RθJA = 338 °C/W on a standard FR-4 board using a 1-inch copper pad, the junction temperature rises ~126°C at full 370 mW dissipation. To stay within the +150°C max TJ limit at +25°C ambient, derate power to ≤370 mW and ensure ≥1 cm² exposed copper area connected to both terminals for thermal relief.
Can this Zener replace a 5 V linear regulator in low-current applications?
No - it functions only as a shunt regulator, requiring a series current-limiting resistor to set operating point. Unlike a 3-terminal LDO, it cannot source load current; it sinks excess current to maintain voltage. Use only for reference generation or overvoltage clamping, not as a standalone 5 V supply.
BZT52C5V1-7-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:
- ±6%
- Power - Max:
- 500 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C5V1-7-F FAQ
1.How can I place an order for BZT52C5V1-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C5V1-7-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 BZT52C5V1-7-F reliable?
The price and inventory of BZT52C5V1-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C5V1-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C5V1-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C5V1-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C5V1-7-F?
BZT52C5V1-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C5V1-7-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 BZT52C5V1-7-F?
For technical support, including BZT52C5V1-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C5V1-7-F requirements.
6.How does Aetrix verify that BZT52C5V1-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C5V1-7-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 BZT52C5V1-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C5V1-7-F?
All BZT52C5V1-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C5V1-7-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 BZT52C5V1-7-F part is unused and in its original packaging.
Return procedure for BZT52C5V1-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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