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Diodes Incorporated BZT52C12LP-7
- Part No.:
- BZT52C12LP-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
BZT52C12LP-7.pdf
- Description:
- DIODE ZENER 12V 250MW 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:10,653
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Product details
Overview
BZT52C12LP-7 from Diodes Incorporated is a surface-mount Zener diode with nominal 12 V zener voltage (11.4–12.7 V range at 5 mA), 250 mW power dissipation, and DFN1006-2 package. It provides precise voltage regulation in low-power biasing, overvoltage protection, and reference circuits for automotive ECUs, industrial sensors, and USB-powered peripherals.
For engineers reviewing the BZT52C12LP-7 datasheet, BZT52C12LP-7 pinout, BZT52C12LP-7 application, or BZT52C12LP-7 equivalent, key selection criteria include zener voltage tolerance (±4.2%), dynamic impedance (25 Ω @ 5 mA), temperature coefficient (+6.0 to +10.0 mV/°C), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown when cathode-to-anode voltage exceeds its specified zener voltage. Its behavior is defined by test current IZT = 5 mA, knee current IZK = 1.0 mA, and maximum reverse current IR = 0.1 µA at VR = 8.0 V.
Thermal performance is characterized by RθJA = 500 °C/W on FR-4 PCB with minimum pad layout, and it supports operation from –65 °C to +150 °C. The NiPdAu-plated terminals ensure solderability per MIL-STD-202, Method 208.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 12.0 V nominal, 11.4–12.7 V range at 5 mA - defines stable regulation point under standard test conditions |
| Power Dissipation (PD) | 250 mW at TA = 25 °C - limits continuous power handling on standard FR-4 board |
| Zener Impedance (ZZT) | 25 Ω max at IZT = 5 mA - determines output voltage stability under load variation |
| Reverse Leakage (IR) | 0.1 µA max at VR = 8.0 V - ensures minimal quiescent current in standby protection circuits |
| Temp. Coefficient (αVZ) | +6.0 to +10.0 mV/°C at IZTC = 5 mA - quantifies voltage drift across operating temperature range |
| Package | DFN1006-2 (1.0 × 0.6 × 0.5 mm) - ultra-small footprint enabling high-density PCB layouts |
| AEC-Q101 Qualified | Yes - validated for automotive applications requiring high-reliability discrete components |
Pinout & Package
DFN1006-2 package with two terminals: anode and cathode. Cathode identified by dot marking on top surface. No internal die bonding wire; terminals are formed from copper leadframe with NiPdAu plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reference ground node | Connected to circuit ground or lower-potential rail in shunt regulation configuration |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input rail; clamps voltage to VZ when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including engine control, body modules, and ADAS sensor interfaces |
| Lead-free & RoHS compliant | Zero intentionally added lead; UL 94V-0 molded compound meets environmental compliance mandates |
| Moisture Sensitivity Level 1 | No baking required before reflow; compatible with standard SMT assembly without preconditioning |
| Ultra-small DFN1006-2 footprint | 1.0 mm × 0.6 mm area saves >70% board space vs. SOD-123; enables miniaturized portable designs |
| NiPdAu terminal finish | Ensures robust solder joint integrity and long-term intermetallic stability in thermal cycling environments |
Applications
| Automotive Cabin Sensors | Industrial Temperature Transmitters |
|---|---|
|
Use Scenario: Voltage reference for 4–20 mA loop-powered RTD signal conditioning in HVAC control units. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 12 V bias to op-amp and ADC front-end. Use Value: Maintains <±1% output accuracy over –40 °C to +125 °C due to AEC-Q101 validation and low tempco drift. |
Use Scenario: Overvoltage clamp protecting RS-485 transceiver inputs in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Reverse-biased transient suppressor limiting bus voltage to 12.7 V during ESD or surge events. Use Value: Limits clamping voltage to safe level while drawing only 0.1 µA leakage at 8 V, minimizing standby power loss. |
| USB-C Power Delivery Adapters | Medical Wearable Battery Monitors |
|
Use Scenario: Precision voltage reference for feedback divider in 12 V output buck converter of compact AC/DC adapter. IC Role / Device Role / Timing Role: Zener-based reference replacing TL431 where size and cost constraints dominate. Use Value: Delivers 12 V ±4.2% regulation with 25 Ω dynamic impedance, enabling tight output tolerance without external compensation. |
Use Scenario: Low-current bias source for fuel gauge IC in rechargeable lithium coin-cell wearable devices. IC Role / Device Role / Timing Role: Stable 12 V reference for ADC reference rail in battery voltage monitoring path. Use Value: Draws only 0.1 µA at 8 V reverse bias, extending coin-cell life beyond 5 years in always-on monitoring mode. |
Availability
BZT52C12LP-7 is available at Aetrix Electronics and suitable for automotive cabin sensors, industrial temperature transmitters, and USB-C power delivery adapters requiring stable component supply with full traceability and AEC-Q101 assurance.
Supply support for BZT52C12LP-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 consumer markets.
The BZT52CxxLP series belongs to Diodes' AEC-Q101-qualified Zener diode portfolio, designed specifically for space-constrained, high-stability voltage reference and protection applications in harsh-environment electronics.
FAQ
What is the maximum power dissipation of BZT52C12LP-7 and under what conditions?
BZT52C12LP-7 has a maximum power dissipation of 250 mW at ambient temperature TA = 25 °C, measured on FR-4 PCB with the minimum recommended pad layout per datasheet page 4. Derating is required above 25 °C at 0.5 mW/°C due to RθJA = 500 °C/W.
How is polarity marked on the BZT52C12LP-7 package?
Polarity is indicated by a cathode dot on the top surface of the DFN1006-2 package. The dot identifies the cathode terminal; the opposite side is the anode. This marking aligns with industry-standard orientation for surface-mount Zener diodes.
Is BZT52C12LP-7 suitable for automotive applications?
Yes - BZT52C12LP-7 is explicitly qualified to AEC-Q101 standards, with testing covering temperature cycling, humidity bias HAST, mechanical shock, and ESD per human-body model (HBM). It is approved for use in non-safety-critical automotive subsystems including infotainment, lighting, and body control modules.
What is the zener impedance and why does it matter in circuit design?
Zener impedance ZZT is 25 Ω maximum at IZT = 5 mA. It represents the dynamic resistance in breakdown region - lower values indicate tighter voltage regulation under varying load or input conditions. In precision references, impedance directly impacts output voltage ripple and line/load regulation error.
BZT52C12LP-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 0402 (1006 Metric)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±5.39%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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:
- X1-DFN1006-2
BZT52C12LP-7 FAQ
1.How can I place an order for BZT52C12LP-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C12LP-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 BZT52C12LP-7 reliable?
The price and inventory of BZT52C12LP-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C12LP-7 is usually 5 days.
3.What payment methods are accepted for BZT52C12LP-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C12LP-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C12LP-7?
BZT52C12LP-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C12LP-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 BZT52C12LP-7?
For technical support, including BZT52C12LP-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C12LP-7 requirements.
6.How does Aetrix verify that BZT52C12LP-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C12LP-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 BZT52C12LP-7 meets industry standards.
7.What is the process for return or replacement of BZT52C12LP-7?
All BZT52C12LP-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C12LP-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 BZT52C12LP-7 part is unused and in its original packaging.
Return procedure for BZT52C12LP-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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