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Diodes Incorporated BZX84B13Q-7-F
- Part No.:
- BZX84B13Q-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BZX84B13Q-7-F.pdf
- Description:
- DIODE ZENER 13V 300MW SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,969
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Product details
Overview
BZX84B13Q-7-F from Diodes Incorporated is a precision 13 V ±2% tolerance Zener diode in SOT23 package, rated for 350 mW power dissipation at ambient temperature, with 30 Ω maximum Zener impedance at 5 mA test current and 0.1 µA maximum reverse leakage at 8 V, used for voltage regulation and reference in automotive power supply monitoring circuits.
For engineers reviewing the BZX84B13Q-7-F datasheet, BZX84B13Q-7-F pinout, BZX84B13Q-7-F application, or BZX84B13Q-7-F equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (357 °C/W), junction-to-ambient derating behavior, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown at nominal 13.0 V with tight ±2% initial tolerance and low 7.0 mV/°C temperature coefficient. It maintains stable regulation across -65 °C to +150 °C operating range and supports automated SMT assembly due to its SOT23 footprint and matte tin-plated terminals.
Its 350 mW power rating applies under conditions where leads are held at ambient temperature; derating begins above 40 °C ambient per the published curve. The 30 Ω dynamic impedance at IZT = 5 mA ensures minimal output voltage variation under load changes typical in biasing and feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.0 V nominal, 12.7–13.3 V range at 5 mA - defines precise regulation point for reference circuits |
| Tolerance | ±2% - enables high-accuracy voltage clamping without post-production trimming |
| Power Dissipation | 350 mW at TA = 25 °C with leads at ambient - sets maximum continuous DC power in non-heatsinked layouts |
| Zener Impedance (ZZT) | 30 Ω max at 5 mA - limits output voltage shift under varying load current in feedback paths |
| Reverse Leakage (IR) | 0.1 µA max at 8 V - ensures negligible error current in high-impedance reference nodes |
| Thermal Resistance (RθJA) | 357 °C/W - determines junction temperature rise under given power and PCB layout |
| Temperature Coefficient | +7.0 mV/°C - quantifies VZ drift over temperature for stability-critical applications |
Pinout & Package
Package: SOT23 - surface-mount plastic case, 0.008 g weight, UL 94V-0 rated molding compound, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground | Connected to circuit ground or lower-potential node when used in reverse-bias regulation |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Provides stable 13 V reference relative to anode; carries full Zener current in operation |
| NC / Heat Sink (Pin 3) | Non-connected / thermal relief pad | No internal connection; serves as mechanical anchor and minor thermal path via PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use, including engine control and body modules requiring high-reliability stress screening |
| ±2% VZ tolerance | Reduces need for external calibration in voltage monitor and overvoltage protection circuits |
| SOT23 package with matte tin plating | Enables lead-free reflow compatibility and eliminates intermetallic growth concerns in long-life designs |
| Halogen- and antimony-free "Green" construction | Meets EU RoHS 3 (2015/863/EU) and automotive environmental compliance mandates without performance trade-offs |
Applications
| Automotive Battery Monitoring | Industrial Sensor Reference |
|---|---|
Use Scenario: Monitoring 12 V vehicle battery voltage against overcharge/undervoltage thresholds in body control modules. IC Role / Device Role / Timing Role: Zener diode provides stable 13 V reference for comparator input in analog voltage detection circuit. Use Value: Tight ±2% tolerance ensures accurate trip-point definition without software compensation, supporting ASIL-B functional safety requirements. |
Use Scenario: Supplying precision bias voltage to bridge sensor amplifiers in factory-floor pressure transducers. IC Role / Device Role / Timing Role: Acts as shunt reference in ratiometric signal conditioning chain with low-drift op-amps. Use Value: 30 Ω Zener impedance minimizes gain error induced by amplifier input bias current variation across temperature. |
| Power Supply Overvoltage Clamp | Microcontroller Reset Circuit |
Use Scenario: Protecting 3.3 V logic rails from transient surges on shared 5 V supply lines in industrial PLCs. IC Role / Device Role / Timing Role: Shunt clamp activated during overvoltage events to divert excess current away from downstream ICs. Use Value: 350 mW rating allows sustained clamping of short-duration transients without thermal runaway or parametric shift. |
Use Scenario: Generating clean reset signal for ARM Cortex-M microcontrollers during brown-out conditions. IC Role / Device Role / Timing Role: Provides threshold-detection reference for dedicated reset supervisor IC or discrete RC-reset network. Use Value: Low 0.1 µA reverse leakage prevents capacitor discharge delay, ensuring deterministic reset timing below 2.7 V supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4688T1G | 13 V nominal, ±5% tolerance, 500 mW rating, SOD-123 package | Higher power but looser tolerance; larger footprint requires PCB redesign | Select when higher surge energy handling is needed and ±5% VZ is acceptable |
| BZX84-C13 | 13 V nominal, ±5% tolerance, 350 mW, same SOT23 package, non-automotive grade | Lacks AEC-Q101 qualification and tighter tolerance; not approved for automotive use | Acceptable for cost-sensitive consumer or industrial applications where automotive reliability is not required |
Compared with MMSZ4688T1G and BZX84-C13, BZX84B13Q-7-F uniquely delivers automotive-grade reliability, ±2% voltage accuracy, and SOT23 compatibility-making it optimal for space-constrained, safety-aware systems where regulation precision and qualification integrity are jointly critical.
Availability
BZX84B13Q-7-F is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial sensor reference, power supply overvoltage clamp, and microcontroller reset circuits requiring stable component supply with guaranteed long-term availability.
Supply support for BZX84B13Q-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.
BZX84B series belongs to Diodes' precision Zener diode product line, engineered specifically for automotive-grade voltage reference and regulation applications demanding AEC-Q101 compliance and tight parametric control.
FAQ
What is the maximum Zener current for continuous operation?
The absolute maximum Zener current is derived from the 350 mW power rating and nominal 13 V Zener voltage: IZ(max) = 350 mW / 13 V ≈ 26.9 mA. However, the datasheet specifies 5 mA as the standard test current for VZ and ZZT; sustained operation above 20 mA requires thermal analysis using RθJA = 357 °C/W and ambient temperature constraints.
Is BZX84B13Q-7-F compatible with lead-free reflow profiles?
Yes - it features matte tin-plated terminals qualified to MIL-STD-202, Method 208, and supports JEDEC J-STD-020 Class 1 moisture sensitivity. Its SOT23 package withstands peak reflow temperatures up to 260 °C for ≤40 seconds, meeting IPC/JEDEC J-STD-020D.2 requirements for lead-free assembly.
How does the temperature coefficient affect regulation accuracy over -40 °C to +125 °C?
With a specified +7.0 mV/°C coefficient, VZ shifts approximately +0.56 V from -40 °C to +125 °C (ΔT = 165 °C). This yields a worst-case VZ range of ~12.44 V to ~13.56 V - still within ±5% of nominal, making it suitable for non-critical reference roles where full-temperature accuracy is secondary to robustness.
Can this Zener diode replace a 1N4742A in existing designs?
No - the 1N4742A is a 12 V, 1 W through-hole Zener in DO-41 package. BZX84B13Q-7-F is a 13 V, 350 mW SOT23 device with different thermal behavior, footprint, and tolerance. Direct replacement would require validation of power dissipation margin, PCB layout change, and recalibration of voltage thresholds due to the 1 V difference and tighter tolerance.
BZX84B13Q-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 13 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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:
- SOT-23-3
BZX84B13Q-7-F FAQ
1.How can I place an order for BZX84B13Q-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84B13Q-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 BZX84B13Q-7-F reliable?
The price and inventory of BZX84B13Q-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 BZX84B13Q-7-F is usually 5 days.
3.What payment methods are accepted for BZX84B13Q-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84B13Q-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84B13Q-7-F?
BZX84B13Q-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84B13Q-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 BZX84B13Q-7-F?
For technical support, including BZX84B13Q-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84B13Q-7-F requirements.
6.How does Aetrix verify that BZX84B13Q-7-F is sourced from the original manufacturer or authorized distributors?
All BZX84B13Q-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 BZX84B13Q-7-F meets industry standards.
7.What is the process for return or replacement of BZX84B13Q-7-F?
All BZX84B13Q-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84B13Q-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 BZX84B13Q-7-F part is unused and in its original packaging.
Return procedure for BZX84B13Q-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84B13Q-7-F Tags
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