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Diodes Incorporated BZT52C5V1-7
- Part No.:
- BZT52C5V1-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C5V1-7.pdf
- Description:
- DIODE ZENER 5.1V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:7,430
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Product details
Overview
BZT52C5V1-7 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 reference and overvoltage protection in low-power DC rails.
For engineers reviewing the BZT52C5V1-7 datasheet, BZT52C5V1-7 pinout, BZT52C5V1-7 application, or BZT52C5V1-7 equivalent, key selection factors include Zener voltage tolerance (4.8–5.4 V), reverse leakage (≤2.0 µA at 1.2 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 or supply conditions. Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance (60 Ω @ 1 kHz, 5 mA).
Designed for medium-current general-purpose regulation, it delivers predictable performance from −65°C to +150°C operating range and supports automated SMT assembly via matte tin-plated alloy 42 leads and SOD123 footprint compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.1 V nominal, 4.8–5.4 V min–max range at 5 mA - defines regulated output voltage tolerance in feedback or clamp circuits. |
| Power Dissipation | 370 mW at +25°C ambient - sets maximum continuous power handling on standard FR-4 PCB with 1-inch copper pad. |
| Zener Impedance (ZZT) | 60 Ω @ 1 kHz, 5 mA - determines AC regulation stability and ripple rejection in voltage reference paths. |
| Reverse Leakage (IR) | ≤2.0 µA @ VR = 1.2 V - ensures minimal quiescent current draw in battery-powered sensing or standby circuits. |
| Temperature Coefficient | −2.7 mV/°C - quantifies voltage drift with temperature, critical for accuracy in wide-temperature industrial environments. |
| Package | SOD123 - standardized 2-pin surface-mount outline with cathode band marking and 0.010 g mass for high-speed pick-and-place. |
Pinout & Package
Package: SOD123 - molded plastic case, UL 94V-0 flammability rating, moisture sensitivity level 1 per J-STD-020, cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of circuit; reverse-biased operation requires this pin grounded or at lower voltage than cathode. |
| Cathode | Zener breakdown terminal / voltage regulation output | Connected to regulated node; clamps voltage to 5.1 V when reverse current ≥5 mA, with polarity marked by band on package. |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight Zener voltage distribution and repeatable breakdown behavior across production lots. |
| AEC-Q101 qualification | Validates reliability for automotive electronics including infotainment power supplies and sensor biasing circuits. |
| Lead-free & RoHS-compliant | Meets EU Directive 2011/65/EU and halogen/antimony-free "Green" requirements (<900 ppm Br/Cl, <1000 ppm Sb). |
| Matte tin annealed plating | Enables robust solderability per MIL-STD-202 Method 208 and compatibility with lead-free reflow profiles. |
Applications
| USB Power Rail Protection | Microcontroller Reset Circuit |
|---|---|
Use Scenario: Clamping 5 V USB VBUS line against transient overvoltage during hot-plug events or ESD discharge. IC Role / Device Role / Timing Role: Zener diode acts as shunt regulator and voltage clamp, diverting surge current to ground before IC damage occurs. Use Value: Limits peak voltage to ≤5.4 V with <2 µA leakage at 1.2 V, preserving USB PHY integrity without loading idle bus. |
Use Scenario: Generating precise 5.1 V threshold for microcontroller reset supervisor ICs or RC-based reset timing networks. IC Role / Device Role / Timing Role: Provides stable reference voltage to enable accurate reset assertion/deassertion at defined supply levels. Use Value: Maintains ±0.3 V regulation window across −40°C to +85°C, ensuring deterministic reset behavior in embedded control systems. |
| Automotive Sensor Biasing | Industrial I/O Module Protection |
Use Scenario: Supplying stable bias voltage to analog sensors (e.g., pressure transducers) in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Functions as low-power voltage reference source, compensating for supply ripple and load variation. Use Value: Delivers −2.7 mV/°C tempco and 60 Ω ZZT, minimizing sensor offset drift and enabling <0.5% full-scale error over temperature. |
Use Scenario: Protecting digital input pins of PLC modules from field-induced surges on 24 V industrial control lines. IC Role / Device Role / Timing Role: Acts as fast-acting clamp to limit input voltage to safe logic levels during transients. Use Value: Responds within nanoseconds to >1.2 V excursions, limiting clamped voltage to ≤5.4 V while sustaining 370 mW peak dissipation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5221B-7-F | Same 5.1 V nominal Zener voltage but higher ZZT (17 Ω vs. 60 Ω), lower PD (350 mW), SOT-23 package. | Higher thermal resistance limits power handling in compact layouts; better suited for signal-level clamping than rail regulation. | Select when board space is constrained and Zener current remains <3 mA; avoid for sustained 5 mA regulation loads. |
| 1N4733A | Through-hole DO-41 package, same 5.1 V rating but higher PD (1 W), larger RθJA (~500 °C/W), no AEC-Q101 qualification. | Lacks automotive qualification and SMT compatibility; suitable only for prototyping or non-automotive legacy designs. | Choose only for hand-soldered prototypes or cost-sensitive non-automotive applications where SMT is not required. |
Compared with MMBZ5221B-7-F and 1N4733A, BZT52C5V1-7 offers optimal balance of AEC-Q101 reliability, SOD123 manufacturability, and 370 mW regulation capability - making it preferred for volume automotive and industrial SMT production where thermal and qualification constraints apply.
Availability
BZT52C5V1-7 is available at Aetrix Electronics and suitable for automotive infotainment power supplies, industrial PLC input protection, and microcontroller reset circuits requiring stable component supply and AEC-Q101 compliance.
Supply support for BZT52C5V1-7 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with emphasis on high-reliability, energy-efficient components for automotive, industrial, and consumer markets.
BZT52C5V1-7 belongs to the BZT52C series of surface-mount Zener diodes designed for precision voltage regulation and overvoltage protection in space-constrained, high-volume applications demanding AEC-Q101 qualification.
FAQ
What is the maximum reverse current specification for BZT52C5V1-7 at 1.2 V?
The maximum reverse current (IR) for BZT52C5V1-7 is 2.0 µA when tested at VR = 1.2 V and TA = +25°C. This low leakage ensures minimal parasitic loading in battery-backed or ultra-low-power circuits where standby current must remain below 5 µA.
Is BZT52C5V1-7 qualified for automotive applications?
Yes, BZT52C5V1-7 is qualified to AEC-Q101 standards for high-reliability automotive use. It undergoes stress testing including HTSL, TC, UHAST, and mechanical shock per AEC specifications, and is offered in automotive-grade variants (e.g., BZT52C5V1Q-7-F) with full traceability and PPAP support.
What is the thermal resistance junction-to-ambient for BZT52C5V1-7?
The thermal resistance junction-to-ambient (RθJA) is 338 °C/W when mounted on an FR-4 PCB with a 1-inch copper pad layout. This value defines the temperature rise per watt of dissipated power and informs derating curves - e.g., power must be reduced to ~250 mW at +75°C ambient.
Can BZT52C5V1-7 replace a 5.1 V through-hole Zener like 1N4733A?
BZT52C5V1-7 provides identical nominal Zener voltage (5.1 V) and comparable voltage tolerance (±0.3 V), but differs in package (SOD123 vs. DO-41), power rating (370 mW vs. 1 W), and qualification (AEC-Q101 vs. commercial). It is a direct functional replacement only in SMT designs where thermal and reliability requirements align.
BZT52C5V1-7 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):
- 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 FAQ
1.How can I place an order for BZT52C5V1-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C5V1-7 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 BZT52C5V1-7 reliable?
The price and inventory of BZT52C5V1-7 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 is usually 5 days.
3.What payment methods are accepted for BZT52C5V1-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C5V1-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C5V1-7?
BZT52C5V1-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C5V1-7 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 BZT52C5V1-7?
For technical support, including BZT52C5V1-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C5V1-7 requirements.
6.How does Aetrix verify that BZT52C5V1-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C5V1-7 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 BZT52C5V1-7 meets industry standards.
7.What is the process for return or replacement of BZT52C5V1-7?
All BZT52C5V1-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C5V1-7, 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 BZT52C5V1-7 part is unused and in its original packaging.
Return procedure for BZT52C5V1-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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