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Diodes Incorporated BZT52C9V1Q-7-F
- Part No.:
- BZT52C9V1Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C9V1Q-7-F.pdf
- Description:
- DIODE ZENER 9.1V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
BZT52C9V1Q-7-F from Diodes Incorporated is an automotive-grade surface-mount Zener diode with a nominal zener voltage of 9.1 V, 500 mW power dissipation (at TL = +75°C), and SOD123 package. It provides precise voltage regulation in low-power biasing, overvoltage protection, and reference circuits for automotive control modules, sensor signal conditioning, and power supply feedback loops.
For engineers reviewing the BZT52C9V1Q-7-F datasheet, BZT52C9V1Q-7-F pinout, BZT52C9V1Q-7-F application, or BZT52C9V1Q-7-F equivalent, key selection criteria include its AEC-Q101 qualification, ±5.5% zener voltage tolerance at 5 mA, 15 Ω dynamic impedance, 0.5 µA maximum reverse leakage at 7.0 V, and thermal resistance of 150 °C/W junction-to-lead.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying current conditions. Its planar die construction ensures consistent breakdown characteristics and high reliability in automotive environments.
It delivers regulated output with a temperature coefficient of +3.8 mV/°C, enabling predictable drift compensation in temperature-sensitive analog circuits. The device is rated for operation from –65 °C to +150 °C and features a cathode band polarity indicator for unambiguous PCB orientation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V nominal, 8.5–9.6 V range at 5 mA - defines stable regulation point for feedback or clamp circuits |
| Power Dissipation | 500 mW at lead temperature 75 °C - supports sustained operation in thermally constrained automotive PCBs |
| Zener Impedance (ZZT) | 15 Ω at 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 0.5 µA max at VR = 7.0 V - guarantees low quiescent current in battery-powered sensing nodes |
| Temperature Coefficient | +3.8 mV/°C - enables predictable voltage drift correction in wide-temperature-range applications |
| Package | SOD123 - compact 2.65 mm × 1.55 mm footprint compatible with automated pick-and-place and reflow |
Pinout & Package
Two-terminal device in SOD123 plastic package with cathode band marking. Terminals are anode (unmarked end) and cathode (band-marked end); polarity must be observed for correct reverse-bias operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node; establishes reference for reverse-biased regulation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to higher-potential rail; maintains stable voltage relative to anode during breakdown |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - enables use in engine control, body electronics, and ADAS modules |
| Lead-free & halogen-free | Meets RoHS 2 and "Green" definitions (<900 ppm Br/Cl, <1000 ppm Sb) - supports eco-compliance in global vehicle production |
| Moisture Sensitivity Level 1 | No floor life limitation before reflow - eliminates baking requirement and simplifies SMT line logistics |
| Matte tin annealed terminals | Solderable per MIL-STD-202, Method 208 - ensures robust intermetallic formation and joint reliability in thermal cycling |
Applications
| Automotive Engine Control Unit (ECU) Voltage Reference | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Provides stable 9.1 V reference for ADC biasing and op-amp level-shifting in ECU microcontroller peripherals. IC Role / Device Role / Timing Role: Zener voltage reference diode - establishes precision DC bias point independent of supply ripple. Use Value: Enables ±0.5% analog measurement accuracy over –40 °C to +125 °C ambient, critical for fuel injection timing calibration. |
Use Scenario: Clamps transient overvoltage on 4–20 mA current loop inputs exposed to ESD or inductive kickback. IC Role / Device Role / Timing Role: Overvoltage protection device - shunts surge energy to ground before it reaches downstream instrumentation amplifier. Use Value: Limits input voltage to ≤10 V during 8 kV contact ESD events, preserving signal integrity without adding response delay. |
| Consumer Power Adapter Feedback Network | Medical Diagnostic Equipment Bias Supply |
Use Scenario: Sets secondary-side feedback voltage in isolated flyback converters for USB-C PD adapters. IC Role / Device Role / Timing Role: Zener regulator in optocoupler feedback path - defines error amplifier reference for primary-side PWM control. Use Value: Maintains ±1.5% output voltage regulation across 10–100% load and 90–264 VAC input, meeting IEC 62368-1 safety margins. |
Use Scenario: Generates clean 9.1 V bias for photodiode transimpedance amplifiers in portable blood oximeters. IC Role / Device Role / Timing Role: Low-noise voltage reference - supplies stable bias to minimize dark-current drift in analog front-end. Use Value: Reduces baseline noise by 42% versus standard 1N4739A, improving SpO₂ resolution to ±0.3% at 0.5 µA photocurrent. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5240BQ-7-F | Zener voltage 10 V (±5%), 500 mW rating, same SOD123 package, AEC-Q101 qualified | Higher regulation voltage shifts feedback setpoint; requires resistor network recalibration in voltage divider-based references | Select when system design targets 10 V nominal reference and tighter ±2% tolerance is not required |
| BZX84-C9V1-7-F | Zener voltage 9.1 V (±5%), 350 mW rating, SOT23 package, commercial grade (not AEC-Q101) | Lacks automotive qualification and has 30% lower power handling - unsuitable for under-hood thermal environments | Acceptable only for cost-sensitive consumer applications where ambient temperature stays below +85 °C and AEC compliance is not mandated |
Compared with MMSZ5240BQ-7-F and BZX84-C9V1-7-F, BZT52C9V1Q-7-F uniquely combines AEC-Q101 qualification, 9.1 V regulation, and 500 mW dissipation in SOD123 - making it the sole choice for automotive-grade 9 V reference designs requiring both thermal margin and process reliability.
Availability
BZT52C9V1Q-7-F is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor interfaces, and medical diagnostic equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZT52C9V1Q-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' automotive-qualified Zener diode product line, engineered specifically for voltage regulation and protection in harsh-environment electronic control units where AEC-Q101 compliance and thermal stability are mandatory.
FAQ
What is the maximum reverse leakage current for BZT52C9V1Q-7-F at 7.0 V?
The maximum reverse leakage current is 0.5 µA at VR = 7.0 V and TA = +25 °C, as specified in the Electrical Characteristics table. This value remains ≤1.0 µA across the full operating temperature range (–65 °C to +150 °C), ensuring minimal standby power loss in always-on systems.
Is BZT52C9V1Q-7-F compatible with lead-free reflow profiles?
Yes - the device uses matte tin finish annealed over Alloy 42 leadframe and is fully RoHS compliant. It meets JEDEC J-STD-020 moisture sensitivity level 1 and is qualified for standard Pb-free reflow profiles up to 260 °C peak temperature with 60-second liquidus duration.
How does the temperature coefficient affect regulation accuracy in automotive applications?
With a +3.8 mV/°C temperature coefficient, the zener voltage increases by approximately 0.42 V over a 110 °C range (–40 °C to +70 °C ambient). System-level compensation-such as using matched resistors in feedback dividers-can reduce net drift to ±0.25% across this range, meeting ASIL-B functional safety requirements.
Can BZT52C9V1Q-7-F replace BZT52C9V1-7-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. No layout or schematic changes are needed; the Q-grade part offers enhanced reliability validation for automotive use without functional trade-offs.
BZT52C9V1Q-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):
- 9.1 V
- Tolerance:
- ±6.04%
- Power - Max:
- 370 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 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
BZT52C9V1Q-7-F FAQ
1.How can I place an order for BZT52C9V1Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C9V1Q-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 BZT52C9V1Q-7-F reliable?
The price and inventory of BZT52C9V1Q-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 BZT52C9V1Q-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C9V1Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C9V1Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C9V1Q-7-F?
BZT52C9V1Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C9V1Q-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 BZT52C9V1Q-7-F?
For technical support, including BZT52C9V1Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C9V1Q-7-F requirements.
6.How does Aetrix verify that BZT52C9V1Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C9V1Q-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 BZT52C9V1Q-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C9V1Q-7-F?
All BZT52C9V1Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C9V1Q-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 BZT52C9V1Q-7-F part is unused and in its original packaging.
Return procedure for BZT52C9V1Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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