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Diodes Incorporated BZT52C3V3Q-7-F
- Part No.:
- BZT52C3V3Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C3V3Q-7-F.pdf
- Description:
- DIODE ZENER 3.3V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,740
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Product details
Overview
BZT52C3V3Q-7-F from Diodes Incorporated is an AEC-Q101 qualified surface-mount Zener diode with a nominal zener voltage of 3.3 V (±0.2 V tolerance), 500 mW power dissipation at TL = +75°C, and 370 mW at TA = +25°C, used for precision voltage regulation and overvoltage protection in automotive control modules.
For engineers reviewing the BZT52C3V3Q-7-F datasheet, BZT52C3V3Q-7-F pinout, BZT52C3V3Q-7-F application, or BZT52C3V3Q-7-F equivalent, key selection criteria include zener voltage accuracy (3.1–3.5 V), low dynamic impedance (95 Ω @ 5 mA), temperature coefficient (−3.5 to 0 mV/°C), reverse leakage (≤5 µA @ 1 V), and SOD123 automotive-grade packaging.
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, while the SOD123 package supports automated assembly and meets AEC-Q101 reliability requirements for automotive electronics.
It delivers regulated output with 5 mA test current, 95 Ω zener impedance at IZT, and ≤5 µA reverse leakage at VR = 1 V. The −3.5 to 0 mV/°C temperature coefficient enables predictable drift compensation in voltage-reference circuits across −65°C to +150°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.3 V nominal, 3.1–3.5 V range @ 5 mA - defines precise clamping threshold for 3.3 V rail protection |
| Power Dissipation | 370 mW @ TA = +25°C - sets maximum continuous power in standard PCB layout without forced cooling |
| Zener Impedance (ZZT) | 95 Ω @ 1 kHz, 5 mA - determines regulation stiffness and output voltage variation under load transients |
| Reverse Leakage (IR) | ≤5 µA @ VR = 1 V - ensures minimal standby current in low-power sensing or bias networks |
| Temperature Coefficient | −3.5 to 0 mV/°C - quantifies voltage drift per degree, critical for temperature-stable references |
| Junction-to-Lead Thermal Resistance | 150 °C/W - enables thermal design margin when mounted on copper pads for automotive under-hood use |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking, UL 94V-0 rated, 0.010 g weight, 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; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener breakdown terminal / voltage clamp input | Connected to protected node (e.g., MCU I/O line); conducts when voltage exceeds 3.3 V to shunt excess current |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics with extended temperature and lifetime reliability |
| Planar die construction | Ensures tight parameter distribution and repeatable zener voltage tolerance across production lots |
| Matte tin lead finish | Enables reliable solderability per MIL-STD-202, Method 208 and compatibility with lead-free reflow profiles |
| Halogen- and antimony-free "Green" compound | Meets automotive environmental standards (<900 ppm Br, <900 ppm Cl, <1000 ppm Sb) without compromising molding integrity |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting LIN bus transceiver inputs from load-dump-induced voltage spikes in door module ECUs. IC Role / Device Role / Timing Role: Zener clamp limiting transient voltage to ≤3.5 V to prevent damage to 3.3 V logic interfaces. Use Value: Prevents latch-up or gate oxide failure in transceivers by clamping within 100 ns with ≤5 µA leakage at 1 V bias. |
Use Scenario: Providing stable 3.3 V reference for 12-bit ADC in temperature sensor front-end. IC Role / Device Role / Timing Role: Precision voltage reference source with ±0.2 V tolerance and low tempco for ratiometric measurement accuracy. Use Value: Enables <±0.5% full-scale error over −40°C to +125°C due to predictable −3.5 to 0 mV/°C drift behavior. |
| USB-C Power Delivery Monitoring | Smart Meter Voltage Supervisor |
Use Scenario: Regulating auxiliary 3.3 V supply derived from variable VBUS during PD negotiation phases. IC Role / Device Role / Timing Role: Low-power shunt regulator maintaining stable bias for PD controller monitoring circuitry. Use Value: Delivers 370 mW dissipation headroom at ambient +25°C while consuming only ≤5 µA quiescent current. |
Use Scenario: Supervising microcontroller reset threshold during brown-out events in utility meter designs. IC Role / Device Role / Timing Role: Reset supervisor element triggering POR when main 3.3 V rail drops below 3.1 V. Use Value: Guarantees deterministic reset activation with 3.1–3.5 V hysteresis window and <100 ns response to voltage sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4679T1G | Zener voltage 3.3 V (same nominal), but ±5% tolerance (3.14–3.47 V); 500 mW rating; SOD123 package | Higher voltage tolerance reduces precision in reference applications; suitable for general-purpose clamping | Select when cost sensitivity outweighs tight regulation needs and AEC-Q101 is not required |
| BZX384-C3V3,115 | Zener voltage 3.3 V (±5%), 300 mW power rating, SOD323 package - smaller footprint but lower thermal capability | Limited to low-power signal-level protection; unsuitable for sustained 370 mW dissipation in automotive environments | Choose only for space-constrained consumer PCBs where thermal derating and automotive qualification are not needed |
Compared with MMSZ4679T1G and BZX384-C3V3,115, BZT52C3V3Q-7-F offers tighter voltage tolerance (±0.2 V vs. ±5%), higher power handling (370 mW vs. 300 mW), and AEC-Q101 qualification - making it uniquely suited for automotive voltage supervision where reliability and precision are co-dependent.
Availability
BZT52C3V3Q-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, and USB-C power delivery monitoring requiring stable component supply with guaranteed AEC-Q101 compliance and traceable sourcing.
Supply support for BZT52C3V3Q-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.
The BZT52C series belongs to Diodes' AEC-Q101-qualified Zener diode product line, engineered specifically for voltage regulation and transient suppression in harsh-environment automotive electronics.
FAQ
What is the maximum reverse voltage (VR) this Zener diode can withstand before breakdown?
The BZT52C3V3Q-7-F has a nominal zener voltage of 3.3 V with a specified range of 3.1–3.5 V at 5 mA test current. It begins controlled reverse breakdown at approximately 3.1 V and maintains regulation up to its power limit. The absolute maximum non-destructive reverse voltage is not defined separately - operation beyond 3.5 V must remain within the 370 mW power envelope to avoid thermal runaway.
Is this device suitable for use in a 3.3 V LDO feedback network?
Yes - its tight 3.1–3.5 V zener range, low 95 Ω dynamic impedance, and −3.5 to 0 mV/°C temperature coefficient make it appropriate for precision feedback references in adjustable LDOs. However, it must be biased with ≥5 mA to ensure regulation stability, and thermal design must accommodate 370 mW dissipation at ambient +25°C.
Does the 'Q' suffix indicate AEC-Q101 qualification for this part?
Yes - per Diodes Incorporated's ordering nomenclature, the 'Q' in BZT52C3V3Q-7-F explicitly denotes AEC-Q101 qualification. This is confirmed in the datasheet's Ordering Information table, which lists '(Type Number)Q-7-F' as the automotive-grade variant in SOD123 packaging with 3,000-piece tape-and-reel delivery.
How does the SOD123 package affect thermal performance compared to SOD323?
The SOD123 package provides significantly better thermal performance than SOD323: RθJA is 338 °C/W (vs. ~450 °C/W for SOD323), and RθJL is 150 °C/W. This allows BZT52C3V3Q-7-F to safely dissipate 370 mW at +25°C ambient - whereas SOD323 variants like BZX384-C3V3 are limited to 300 mW and require stricter board-level thermal management.
BZT52C3V3Q-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):
- 3.3 V
- Tolerance:
- ±6.06%
- Power - Max:
- 370 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 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
BZT52C3V3Q-7-F FAQ
1.How can I place an order for BZT52C3V3Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C3V3Q-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 BZT52C3V3Q-7-F reliable?
The price and inventory of BZT52C3V3Q-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 BZT52C3V3Q-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C3V3Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C3V3Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C3V3Q-7-F?
BZT52C3V3Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C3V3Q-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 BZT52C3V3Q-7-F?
For technical support, including BZT52C3V3Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C3V3Q-7-F requirements.
6.How does Aetrix verify that BZT52C3V3Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C3V3Q-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 BZT52C3V3Q-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C3V3Q-7-F?
All BZT52C3V3Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C3V3Q-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 BZT52C3V3Q-7-F part is unused and in its original packaging.
Return procedure for BZT52C3V3Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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