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Nexperia USA Inc. BZX84J-C68,115
- Part No.:
- BZX84J-C68,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
BZX84J-C68,115.pdf
- Description:
- DIODE ZENER 68V 550MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:2,490
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Product details
Overview
BZX84J-C68,115 from Nexperia is a 68 V ±5 % tolerance Zener diode in SOD323F (SC-90) package, rated for 550 mW total power dissipation and 40 W non-repetitive peak reverse power at tp = 100 μs, used for precision voltage regulation and overvoltage protection in automotive and industrial power rails.
For engineers reviewing the BZX84J-C68,115 datasheet, BZX84J-C68,115 pinout, BZX84J-C68,115 application, or BZX84J-C68,115 equivalent, this device supports stable reference generation under transient surge conditions, offers low differential resistance (≤160 Ω at IZ = 2 mA), and meets AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 68 V reference across its cathode-anode terminals with temperature coefficient of +79.8 mV/K at IZ = 2 mA and junction-to-ambient thermal resistance of 230 K/W on FR4 PCB. It delivers regulated voltage with ≤0.05 μA reverse leakage at VR = 54.4 V (80 % of VZ).
Its SC-90 package enables high-density surface-mount placement while sustaining pulsed surges up to 40 W (tp = 100 μs, square wave), and its AEC-Q101 qualification confirms suitability for automotive power supply monitoring and ECU voltage clamping applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 68 V nominal, ±5 % tolerance - ensures stable reference within 64.6–71.4 V at IZ = 2 mA |
| Differential Resistance (rdiff) | ≤160 Ω at IZ = 2 mA - minimizes output voltage variation under load current changes |
| Reverse Leakage Current (IR) | ≤0.05 µA at VR = 54.4 V - guarantees low standby power loss in high-impedance bias networks |
| Total Power Dissipation (Ptot) | 550 mW at Tamb ≤ 25 °C - defines continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Power (PZSM) | 40 W at tp = 100 µs - supports transient overvoltage suppression without failure |
| Junction Temperature (Tj) | −55 °C to +150 °C - enables operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test qualification standard |
Pinout & Package
The BZX84J-C68,115 is housed in a SOD323F (SC-90) plastic surface-mount package measuring 2.7 × 1.35 × 0.95 mm, with flat leads optimized for reflow soldering and high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (marked side) | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD testing |
| Low differential resistance | ≤160 Ω at IZ = 2 mA - improves regulation accuracy under varying load currents |
| Wide voltage range coverage | 68 V nominal in E24 series - supports precise matching to system rail tolerances |
| Pulsed surge capability | 40 W non-repetitive peak power at tp = 100 µs - protects downstream circuitry from transients |
| Small-outline SMD package | SOD323F (SC-90) footprint - enables compact layout in space-constrained modules |
Applications
| Automotive ECU Power Monitoring | Industrial Sensor Reference Supply |
|---|---|
Use Scenario: Monitoring 12 V/24 V battery-derived rails in engine control units for undervoltage/overvoltage detection. IC Role / Device Role / Timing Role: Zener clamp providing stable 68 V reference for comparator threshold setting against scaled input. Use Value: Enables accurate fault detection across −40 °C to +125 °C ambient with AEC-Q101 reliability assurance. |
Use Scenario: Generating a precision reference for 24-bit ADCs in programmable logic controllers. IC Role / Device Role / Timing Role: Low-leakage (≤0.05 µA) voltage reference source stabilizing analog front-end biasing. Use Value: Maintains reference stability under low-current bias conditions, minimizing ADC offset drift. |
| DC-DC Converter Feedback Clamp | Surge-Protected I/O Protection |
Use Scenario: Clamping feedback node of isolated flyback converters to prevent regulator latch-up during line surges. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 40 W pulses without degradation. Use Value: Extends converter uptime by preventing false triggering of overvoltage protection circuits. |
Use Scenario: Protecting RS-485 transceiver inputs from induced lightning surges in factory automation wiring. IC Role / Device Role / Timing Role: First-stage shunt clamp limiting voltage to safe levels before TVS diode activation. Use Value: Reduces stress on downstream TVS by absorbing initial energy spike with predictable 68 V clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C68,115 | Same 68 V ±5 % rating but not AEC-Q101 qualified; PZSM = 40 W only for ≥7.5 V types, same test condition | Limited to commercial/industrial use; lacks automotive stress validation | Select when AEC-Q101 compliance is not required and cost sensitivity is higher |
| MMSZ5263ET1G | 68 V ±5 %, SOD-123 package, Ptot = 500 mW, PZSM = 20 W (tp = 100 µs), no AEC-Q101 claim | Lower surge rating and larger footprint; unqualified for automotive systems | Choose for legacy board compatibility where SOD-123 is already routed |
Compared with BZX84-C68,115 and MMSZ5263ET1G, the BZX84J-C68,115 uniquely combines AEC-Q101 qualification, 40 W surge capability in ultra-small SOD323F, and guaranteed ≤0.05 µA leakage - making it the only option for next-generation automotive power monitoring requiring both size and reliability.
Availability
BZX84J-C68,115 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor signal conditioning, and DC-DC converter feedback stabilization requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZX84J-C68,115 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 AEC-Q101-qualified Zener diode product line, engineered specifically for robust voltage regulation in harsh automotive environments and high-reliability industrial control systems.
FAQ
What is the maximum continuous reverse current the BZX84J-C68,115 can sustain?
The device has no specified maximum continuous reverse current; instead, its DC power limit is defined by Ptot = 550 mW. At 68 V, this corresponds to ~8.1 mA average Zener current. Exceeding this value risks thermal runaway unless heatsinking or derating is applied per Rth(j-a) = 230 K/W.
Does the BZX84J-C68,115 have polarity marking, and how is it identified?
Yes - the cathode is marked by a bar on the top surface aligned with Pin 1. Per datasheet Figure 11 and Table 2, the marking bar indicates the cathode terminal, and the anode is Pin 2. This matches standard SOD323F orientation used across Nexperia's Zener portfolio.
How does temperature affect the 68 V Zener voltage in actual operation?
At IZ = 2 mA, the temperature coefficient is +79.8 mV/K (Table 9), meaning VZ increases by ~79.8 mV per 1 °C rise in junction temperature. Over −40 °C to +150 °C Tj range, this results in ~15.2 V total shift - critical for designs requiring tight reference stability across wide ambient ranges.
Can the BZX84J-C68,115 replace older BZX84-C68 variants in existing designs?
Yes, with caveats: pinout and electrical specs match, but BZX84J-C68,115 adds AEC-Q101 qualification and improved PZSM consistency. No layout change is needed, though designers should verify surge test margins and thermal performance given identical 550 mW Ptot and SOD323F thermal resistance.
BZX84J-C68,115 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):
- 68 V
- Tolerance:
- ±5%
- Power - Max:
- 550 mW
- Impedance (Max) (Zzt):
- 160 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 47.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
BZX84J-C68,115 FAQ
1.How can I place an order for BZX84J-C68,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX84J-C68,115 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-C68,115 reliable?
The price and inventory of BZX84J-C68,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX84J-C68,115 is usually 5 days.
3.What payment methods are accepted for BZX84J-C68,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX84J-C68,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX84J-C68,115?
BZX84J-C68,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX84J-C68,115 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-C68,115?
For technical support, including BZX84J-C68,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX84J-C68,115 requirements.
6.How does Aetrix verify that BZX84J-C68,115 is sourced from the original manufacturer or authorized distributors?
All BZX84J-C68,115 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-C68,115 meets industry standards.
7.What is the process for return or replacement of BZX84J-C68,115?
All BZX84J-C68,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX84J-C68,115, 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-C68,115 part is unused and in its original packaging.
Return procedure for BZX84J-C68,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX84J-C68,115 Tags
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