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Nexperia USA Inc. BZX84J-C12F
- Part No.:
- BZX84J-C12F
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BZX84J-C12F.pdf
- Description:
- DIODE ZENER 12.05V SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:2,174
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Product details
Overview
BZX84J-C12F from Nexperia is a Zener voltage regulator diode in SOD323F (SC-90) package, rated for 12 V nominal Zener voltage at 5 mA test current, ±5 % tolerance, 550 mW total power dissipation, and AEC-Q101 qualified for automotive use. It provides stable reference voltage in low-power biasing, overvoltage protection, and voltage clamping circuits.
For engineers reviewing the BZX84J-C12F datasheet, BZX84J-C12F pinout, BZX84J-C12F application, or BZX84J-C12F equivalent, key selection criteria include Zener voltage tolerance, differential resistance (≤150 Ω), non-repetitive surge capability (40 W), thermal resistance (230 K/W), and automotive qualification status.
Technical Context
This device operates in reverse breakdown to maintain a stable 12 V reference across load variations, with typical differential resistance of 150 Ω at IZ = 5 mA and temperature coefficient of +6.0 to +10 mV/K. Its low capacitance (105 pF at 0 V) supports high-frequency noise suppression in signal conditioning paths.
The SOD323F package enables compact PCB layout with cathode-marked anisotropic termination; thermal performance is defined for FR4 board mounting (1 cm² cathode pad), delivering Rth(j-a) = 230 K/W and Rth(j-sp) = 55 K/W under specified conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 11.4 V to 12.7 V at IZ = 5 mA - ensures ±5 % regulation accuracy under standard test conditions |
| Differential Resistance rdiff | ≤150 Ω at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Total Power Dissipation Ptot | 550 mW at Tamb ≤ 25 °C - defines maximum continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Power PZSM | 40 W for tp = 100 μs square wave - supports transient overvoltage clamping without failure |
| Reverse Current IR | ≤0.1 μA at VR = 9.6 V - guarantees low leakage in high-impedance reference nodes |
| Forward Voltage VF | 1.1 V at IF = 100 mA - defines conduction loss when used in forward-biased protection schemes |
| Thermal Resistance Rth(j-a) | 230 K/W - quantifies junction-to-ambient heat transfer limitation on standard PCB layout |
Pinout & Package
SOD323F (SC-90) surface-mount plastic package: 2-terminal, ultra-small outline (2.3 × 1.35 × 0.95 mm), cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar identifies this terminal; carries reverse current during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for voltage regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per JESD22 standards |
| Low differential resistance | 150 Ω max at 5 mA enables tight voltage regulation under varying load currents in feedback networks |
| Wide Zener voltage range | 12 V nominal with ±5 % tolerance supports cost-sensitive designs where precision trimming is not required |
| Pulsed surge capability | 40 W non-repetitive peak power handling allows reliable transient suppression in 12 V automotive supply rails |
| Small-form-factor packaging | SOD323F footprint (2.3 × 1.35 mm) enables high-density placement in space-constrained modules like body control units |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stabilizing reference voltage for microcontroller ADC inputs monitoring door lock status and window position sensors. IC Role / Device Role / Timing Role: Zener diode provides 12 V rail-derived precision reference for analog front-end circuitry. Use Value: ±5 % tolerance and 150 Ω rdiff ensure consistent 10-bit ADC code mapping across temperature and unit variance. |
Use Scenario: Clamping transients induced on 4–20 mA current loop wiring in factory automation systems. IC Role / Device Role / Timing Role: Reverse-biased Zener absorbs line surges up to 40 W without degradation. Use Value: 40 W pulsed rating and 105 pF capacitance prevent false triggering while preserving loop bandwidth. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Biasing |
Use Scenario: Providing stable voltage reference for optocoupler-based feedback in isolated AC/DC flyback converters. IC Role / Device Role / Timing Role: Zener regulates TL431 reference input to maintain ±3 % output regulation. Use Value: 550 mW Ptot and low thermal resistance enable continuous operation without heatsinking in enclosed adapters. |
Use Scenario: Generating precise bias points for op-amp comparators in portable ultrasound front-end amplifiers. IC Role / Device Role / Timing Role: Low-leakage (≤0.1 μA) Zener establishes clean DC offset in high-gain analog chains. Use Value: Sub-microampere IR at 9.6 V prevents signal drift and maintains SNR > 85 dB in battery-powered devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C12 | Same Zener voltage and tolerance, but not AEC-Q101 qualified; PZSM = 40 W, rdiff = 150 Ω | Limited to industrial/commercial use; lacks automotive stress-test validation | Select when automotive qualification is unnecessary and cost is primary driver |
| MMSZ4687 | 12 V ±5 %, SOD-123 package; Ptot = 500 mW; rdiff = 170 Ω; no AEC-Q101 claim | Higher thermal resistance (300 K/W); larger footprint (3.7 × 1.6 mm) limits board density | Choose only if SOD-123 is already standardized in legacy designs |
Compared with BZX84-C12 and MMSZ4687, BZX84J-C12F uniquely combines AEC-Q101 qualification, SOD323F miniaturization, and verified 40 W surge capability-making it the sole option for new automotive electronics requiring both space efficiency and functional safety compliance.
Availability
BZX84J-C12F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, consumer power adapter feedback loops, and medical diagnostic equipment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX84J-C12F 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BZX84J series belongs to Nexperia's automotive-qualified Zener diode product line, engineered specifically for robust voltage reference and transient protection in harsh-environment 12 V systems.
FAQ
What is the maximum continuous forward current for BZX84J-C12F?
The absolute maximum forward current is 250 mA per limiting values table. However, sustained operation above 100 mA is discouraged due to thermal limitations-forward voltage reaches 1.1 V at 100 mA, and junction temperature must remain below 150 °C. For reliable long-term use, design for ≤50 mA DC forward conduction.
Can BZX84J-C12F be used in parallel for higher power dissipation?
No-Zener diodes exhibit negative temperature coefficients and manufacturing spread, causing current imbalance. Parallel connection risks thermal runaway and premature failure. To increase power handling, use a single higher-rated device or add a series ballast resistor to equalize current sharing across multiple units.
Is the 12 V Zener voltage specified at 25 °C only?
Yes, the nominal 12 V value is guaranteed at Tj = 25 °C and IZ = 5 mA. The temperature coefficient ranges from +6.0 to +10 mV/K, meaning voltage increases ~0.72–1.2 V over a 120 °C junction range. Designs requiring stable reference across temperature must compensate using complementary components or calibration.
Does the SOD323F package support reflow soldering only?
Yes-Nexperia explicitly states reflow soldering is the only recommended method. Hand soldering or wave soldering may exceed thermal limits due to the small mass and thin leads. Reflow profile must comply with JEDEC J-STD-020, peak temperature ≤ 260 °C, and time above 217 °C limited to 60 seconds to avoid delamination or voiding.
BZX84J-C12F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 12.05 V
- Tolerance:
- ±5%
- Power - Max:
- -
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
BZX84J-C12F FAQ
1.How can I place an order for BZX84J-C12F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84J-C12F 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 BZX84J-C12F reliable?
The price and inventory of BZX84J-C12F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84J-C12F is usually 5 days.
3.What payment methods are accepted for BZX84J-C12F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84J-C12F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84J-C12F?
BZX84J-C12F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84J-C12F 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 BZX84J-C12F?
For technical support, including BZX84J-C12F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84J-C12F requirements.
6.How does Aetrix verify that BZX84J-C12F is sourced from the original manufacturer or authorized distributors?
All BZX84J-C12F 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 BZX84J-C12F meets industry standards.
7.What is the process for return or replacement of BZX84J-C12F?
All BZX84J-C12F units undergo pre-shipment inspection (PSI). If there is an issue with BZX84J-C12F, 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 BZX84J-C12F part is unused and in its original packaging.
Return procedure for BZX84J-C12F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84J-C12F Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
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MM5Z5V1ST1G
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SMAJ4744A-TP
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SMAZ12-13-F
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