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Diodes Incorporated BZT52C2V4Q-7-F
- Part No.:
- BZT52C2V4Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C2V4Q-7-F.pdf
- Description:
- DIODE ZENER 2.4V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:1,985
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Product details
Overview
BZT52C2V4Q-7-F from Diodes Incorporated is an automotive-grade surface-mount Zener diode with a nominal zener voltage of 2.4 V, ±8.3% tolerance (2.2–2.6 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 low-voltage power rails of automotive control modules.
For engineers reviewing the BZT52C2V4Q-7-F datasheet, BZT52C2V4Q-7-F pinout, BZT52C2V4Q-7-F application, or BZT52C2V4Q-7-F equivalent, key selection criteria include zener voltage accuracy at 5 mA test current, low dynamic impedance (≤100 Ω at 1 kHz), temperature coefficient (−3.5 to 0 mV/°C), reverse leakage (≤50 µA at 1.0 V), and AEC-Q101 qualification for automotive 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 breakdown characteristics and low leakage, while the SOD123 package supports automated placement and high thermal reliability in constrained PCB layouts.
The device exhibits a negative temperature coefficient (−3.5 to 0 mV/°C) typical for low-voltage Zeners below 5 V, enabling predictable drift compensation in bias networks. It is rated for operation from −65°C to +150°C and qualified to AEC-Q101, confirming suitability for under-hood automotive electronics where thermal cycling and long-term stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.4 V nominal, 2.2–2.6 V range at IZT = 5 mA - defines precise clamping threshold for 2.5 V logic supply rail protection |
| Zener Impedance (ZZT) | ≤100 Ω at f = 1 kHz - ensures minimal output voltage variation under dynamic load transients |
| Reverse Leakage (IR) | ≤50 µA at VR = 1.0 V - guarantees low standby current in always-on automotive circuits |
| Power Dissipation (PD) | 370 mW at TA = +25°C - sets maximum continuous power handling on standard FR-4 PCB with 1-inch copper pad |
| Thermal Resistance (RθJA) | 338 °C/W - determines junction-to-ambient temperature rise per watt, critical for thermal margin in sealed enclosures |
| Temperature Coefficient | −3.5 to 0 mV/°C - quantifies voltage drift with temperature, essential for reference stability in engine control units |
| Package | SOD123 - compact 2-pin surface-mount outline (2.65 mm × 1.55 mm × 1.05 mm) compatible with high-speed pick-and-place |
Pinout & Package
Package: SOD123 - molded plastic case with matte tin-plated alloy 42 leadframe, cathode band marking, UL 94V-0 flammability rating, and 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; forms reference return path during regulation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to protected rail (e.g., 2.5 V microcontroller supply); clamps voltage above 2.4 V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| Lead-free & RoHS compliant | Fully compliant with EU Directive 2011/65/EU; no intentionally added lead, halogens, or antimony |
| Low Zener impedance | ≤100 Ω at 1 kHz enables tight voltage regulation under fast load steps in microcontroller power domains |
| Stable low-voltage reference | 2.4 V ±8.3% tolerance at 5 mA provides repeatable clamping for 2.5 V logic interfaces and ADC references |
| Automated assembly optimized | SOD123 footprint and matte tin finish ensure reliable solderability and compatibility with reflow profiles |
Applications
| Engine Control Unit (ECU) Power Monitoring | Automotive Infotainment Power Rail Clamping |
|---|---|
|
Use Scenario: Monitoring 2.5 V microcontroller core supply in engine control modules exposed to wide ambient temperature swings (−40°C to +125°C). IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage clamp to prevent overvoltage damage during load dump or regulator fault. Use Value: Maintains safe voltage ceiling at 2.6 V max, preventing latch-up or permanent damage to 2.5 V logic ICs under transient overvoltage events. |
Use Scenario: Protecting audio codec and display driver power inputs in head unit designs subject to battery voltage surges. IC Role / Device Role / Timing Role: Low-voltage Zener providing fast-response overvoltage suppression on 2.5 V analog supply lines. Use Value: Limits peak voltage to ≤2.6 V within 100 ns, preserving signal integrity and preventing distortion in sensitive analog audio paths. |
| Body Control Module (BCM) Sensor Reference | ADAS Camera Module Bias Network |
|
Use Scenario: Stabilizing reference voltage for Hall-effect position sensors and LIN transceivers operating from 3.3 V LDO outputs. IC Role / Device Role / Timing Role: Precision Zener supplying stable 2.4 V reference to sensor signal conditioning circuitry. Use Value: Delivers <50 µA leakage at 1.0 V reverse bias, minimizing current draw in always-on BCM sleep modes while maintaining ±1% reference accuracy. |
Use Scenario: Biasing CMOS image sensor analog front-end stages requiring tightly regulated 2.4 V supply in compact camera modules. IC Role / Device Role / Timing Role: Compact SOD123 Zener regulating local analog rail derived from switched-capacitor converter. Use Value: Enables 2.2–2.6 V regulation window with ≤100 Ω dynamic impedance, reducing noise coupling into pixel readout paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5221BS-7-F | Zener voltage 2.4 V, same SOD123 package, but rated only for commercial grade (not AEC-Q101) | Lacks automotive qualification; unsuitable for under-hood or safety-critical systems | Select only for non-automotive industrial or consumer applications where AEC-Q101 is not required |
| BZX84-C2V4 | Same 2.4 V rating and SOT-23 package, but higher ZZT (≤150 Ω) and no AEC-Q101 certification | Lower thermal performance due to larger RθJA (~450 °C/W) and reduced power derating margin | Acceptable for space-constrained board-level prototypes, but not for production automotive designs |
Compared with MMBZ5221BS-7-F and BZX84-C2V4, BZT52C2V4Q-7-F delivers guaranteed automotive reliability, tighter impedance control, and validated thermal performance-making it the sole choice for production ECU, BCM, and ADAS hardware where functional safety and long-term stability are mandatory.
Availability
BZT52C2V4Q-7-F is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, infotainment systems, and ADAS camera modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for BZT52C2V4Q-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.
This part belongs to the BZT52C series of AEC-Q101-qualified Zener diodes designed specifically for voltage regulation and overvoltage protection in automotive electronics with stringent thermal and lifetime requirements.
FAQ
What is the maximum reverse leakage current for BZT52C2V4Q-7-F at 1.0 V?
The maximum reverse leakage current is 50 µA at VR = 1.0 V and TA = +25°C, as specified in the Electrical Characteristics table. This value remains stable across the full operating temperature range (−65°C to +150°C), ensuring predictable low-power behavior in always-on automotive circuits.
Is BZT52C2V4Q-7-F suitable for use in a 2.5 V microcontroller power rail?
Yes - its 2.4 V nominal zener voltage with 2.2–2.6 V tolerance provides a safe clamping threshold below the absolute maximum 2.75 V rating of most 2.5 V logic ICs. When placed in parallel with the rail and sized with appropriate series resistance, it limits overvoltage transients without interfering with normal regulation.
How does the temperature coefficient affect regulation accuracy in engine bay applications?
The temperature coefficient of −3.5 to 0 mV/°C means the zener voltage decreases slightly as temperature rises. At +125°C, the shift is approximately −0.35 V from room temperature, resulting in a worst-case clamping voltage of ~2.25 V - still within the functional range for protecting 2.5 V supplies against overvoltage while avoiding false triggering.
Can BZT52C2V4Q-7-F replace BZT52C2V4-7-F in existing designs?
Yes - the "Q" suffix denotes AEC-Q101 qualification, while all electrical, thermal, and mechanical specifications (including zener voltage, impedance, package, and marking) are identical to the commercial-grade BZT52C2V4-7-F. The Q version adds automotive reliability validation but maintains full form-fit-function compatibility.
BZT52C2V4Q-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):
- 2.4 V
- Tolerance:
- ±8.33%
- Power - Max:
- 370 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 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
BZT52C2V4Q-7-F FAQ
1.How can I place an order for BZT52C2V4Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C2V4Q-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 BZT52C2V4Q-7-F reliable?
The price and inventory of BZT52C2V4Q-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 BZT52C2V4Q-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C2V4Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C2V4Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C2V4Q-7-F?
BZT52C2V4Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C2V4Q-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 BZT52C2V4Q-7-F?
For technical support, including BZT52C2V4Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C2V4Q-7-F requirements.
6.How does Aetrix verify that BZT52C2V4Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C2V4Q-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 BZT52C2V4Q-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C2V4Q-7-F?
All BZT52C2V4Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C2V4Q-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 BZT52C2V4Q-7-F part is unused and in its original packaging.
Return procedure for BZT52C2V4Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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