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Nexperia USA Inc. PZU84-B6V8-QR
- Part No.:
- PZU84-B6V8-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-B6V8-QR.pdf
- Description:
- DIODE ZENER 6.79V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,670
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Product details
Overview
PZU84-B6V8-QR from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, rated for 6.8 V nominal breakdown voltage at IZ = 5 mA, with differential resistance of 60 Ω (typ), temperature coefficient of +1.2 mV/K, and reverse leakage current ≤0.5 μA at VR = 5.5 V - used for precision voltage reference and overvoltage clamping in automotive power rails.
For engineers reviewing the PZU84-B6V8-QR datasheet, PZU84-B6V8-QR pinout, PZU84-B6V8-QR application, or PZU84-B6V8-QR equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, and validated automotive-grade substitution options - all extracted from Nexperia's Rev. 4 product data sheet dated 16 August 2024.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage regulation under varying load and temperature conditions. Its hard breakdown knee and low dynamic impedance (60 Ω typ at 5 mA) ensure minimal voltage deviation during transient current changes.
Designed for automotive environments, it features AEC-Q101 qualification, junction temperature range of −55 °C to +150 °C, and thermal resistance from junction to ambient of 500 K/W on FR4 PCB - enabling reliable operation in engine control units and body electronics without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 6.47 V to 7.14 V at IZ = 5 mA - defines regulated output voltage window under standard test conditions |
| Differential Resistance rdif | 60 Ω (typ) at IZ = 5 mA - determines voltage regulation stiffness against load current variation |
| Temperature Coefficient SZ | +1.2 mV/K at IZ = 5 mA - quantifies voltage drift per degree Celsius rise in junction temperature |
| Reverse Leakage IR | ≤0.5 μA at VR = 5.5 V - ensures minimal standby power loss in high-impedance bias networks |
| Total Power Dissipation Ptot | 250 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC power handling capability |
| Non-repetitive Peak Power PZSM | 40 W for tp = 100 μs square wave - supports transient surge suppression in automotive load-dump events |
| Junction-to-Ambient Rth(j-a) | 500 K/W - determines steady-state temperature rise above ambient per watt dissipated |
Pinout & Package
SOT23 plastic surface-mounted package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch); thermally optimized for reflow soldering with cathode tab as primary heat path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Forward-biased terminal; connects to lower-potential node in reverse-regulation configuration |
| 2 | Not Connected (n.c.) | Internally unconnected; must remain floating - no routing or grounding permitted |
| 3 | Cathode (K) | Breakdown terminal; connects to higher-potential rail and serves as primary thermal conduction path to PCB |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation margin than ±5 % variants - critical for ADC reference and sensor biasing |
| Hard breakdown knee | Ensures sharp, predictable turn-on behavior at VZ, reducing uncertainty in overvoltage protection thresholds |
| AEC-Q101 qualified | Validated for automotive under-hood applications including ECU, BCM, and ADAS power domains |
| Low leakage (≤0.5 μA) | Minimizes quiescent current in always-on circuits such as CAN transceiver bias networks |
| Optimized thermal resistance | Rth(j-sp) = 330 K/W to solder point enables effective heat transfer via cathode pad to copper pour |
Applications
| Engine Control Unit (ECU) Reference | Infotainment System Power Clamp |
|---|---|
Use Scenario: Provides stable 6.8 V reference for microcontroller analog peripherals and sensor signal conditioning in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Zener voltage reference diode operating in reverse breakdown to fix reference potential independent of supply ripple. Use Value: Maintains <±10 mV regulation error across −40 °C to +125 °C ambient due to +1.2 mV/K tempco and low rdif. |
Use Scenario: Clamps 12 V rail transients during load dump events in automotive infotainment head units. IC Role / Device Role / Timing Role: Passive overvoltage protection device absorbing surge energy up to 40 W for 100 μs pulses. Use Value: Limits rail voltage to ≤7.5 V during surges, protecting downstream PMICs and audio codecs without response delay. |
| Body Control Module (BCM) Bias Network | ADAS Camera Power Conditioning |
Use Scenario: Supplies precise bias current to Hall-effect sensors and LIN transceivers in door module and lighting control units. IC Role / Device Role / Timing Role: Current-source stabilizer using series resistor + Zener to generate low-noise, temperature-stable bias voltage. Use Value: Delivers ≤0.5 μA leakage and 60 Ω dynamic impedance to hold sensor bias within ±0.3 % over 10-year vehicle lifetime. |
Use Scenario: Regulates auxiliary 6.8 V supply for image sensor analog front-end and ISP core in surround-view camera modules. IC Role / Device Role / Timing Role: Precision shunt regulator maintaining clean analog supply despite battery voltage fluctuations and RF coupling. Use Value: Achieves <1.5 mVpp noise floor at 1 MHz due to low capacitance (215 pF) and hard knee, preserving SNR in 12-bit image capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C6V8 | ±5 % tolerance, 100 Ω rdif at 5 mA, no AEC-Q101 qualification | Acceptable for non-automotive consumer power supplies where cost > precision | Select only if AEC-Q101 compliance and <60 Ω impedance are not required |
| MMSZ4687T1G | ±5 % tolerance, 100 Ω rdif, 100 nA leakage at 5.5 V, AEC-Q101 qualified | Better leakage performance but higher impedance - suited for ultra-low-power biasing, not clamping | Prefer when sub-μA standby current dominates design priority over regulation stiffness |
Compared with BZX84-C6V8, PZU84-B6V8-QR offers tighter tolerance and lower impedance for improved regulation accuracy; versus MMSZ4687T1G, it trades slightly higher leakage for significantly lower rdif, making it superior for dynamic voltage stabilization in automotive power domains.
Availability
PZU84-B6V8-QR is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera power conditioning requiring stable component supply with full automotive qualification traceability.
Supply support for PZU84-B6V8-QR 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 mobile markets.
The PZU84-Q series belongs to Nexperia's AEC-Q101-qualified Zener regulator portfolio, engineered specifically for robust voltage reference and transient clamping in harsh automotive environments - not general-purpose replacement diodes.
FAQ
What is the maximum continuous power dissipation for PZU84-B6V8-QR at 85 °C ambient?
At Tamb = 85 °C, derated power is calculated as Ptot × (1 − (Tamb − 25)/125) = 250 mW × (1 − 60/125) ≈ 130 mW. This assumes standard FR4 mounting with single-sided 70 μm copper and tin plating per datasheet condition [2]. Junction temperature remains within 150 °C limit at this dissipation level.
Does PZU84-B6V8-QR support bidirectional transient suppression?
No - it is a unidirectional Zener diode configured for reverse-bias regulation only. Forward conduction is limited to 0.9 V at 10 mA (VF), and it lacks symmetrical breakdown characteristics required for bidirectional TVS operation. For bidirectional surge protection, a dedicated TVS array like PESD5V0S1BA must be used.
How does the "B" suffix in PZU84-B6V8-QR affect its electrical behavior?
The "B" denotes the tighter ±2 % Zener voltage tolerance grade and specifies operation in the low-leakage, hard-knee segment of the PZU84-Q series. Per datasheet Table 8, B-grade devices exhibit ≤0.5 μA leakage at VR = 5.5 V and sharper knee curvature versus C-grade (±5 %, higher leakage), optimizing them for precision reference use.
Can PZU84-B6V8-QR replace a 6.8 V Zener in a linear regulator feedback network?
Yes - its 60 Ω differential resistance and +1.2 mV/K temperature coefficient enable stable closed-loop regulation in shunt-based feedback paths. However, ensure the series resistor limits IZ to 1–10 mA to stay within 250 mW Ptot and avoid thermal runaway; verify loop stability with actual load step response.
PZU84-B6V8-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PZU84-Q
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.79 V
- Tolerance:
- ±2.06%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 500 mV
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PZU84-B6V8-QR FAQ
1.How can I place an order for PZU84-B6V8-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-B6V8-QR 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 PZU84-B6V8-QR reliable?
The price and inventory of PZU84-B6V8-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-B6V8-QR is usually 5 days.
3.What payment methods are accepted for PZU84-B6V8-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-B6V8-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-B6V8-QR?
PZU84-B6V8-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-B6V8-QR 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 PZU84-B6V8-QR?
For technical support, including PZU84-B6V8-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-B6V8-QR requirements.
6.How does Aetrix verify that PZU84-B6V8-QR is sourced from the original manufacturer or authorized distributors?
All PZU84-B6V8-QR 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 PZU84-B6V8-QR meets industry standards.
7.What is the process for return or replacement of PZU84-B6V8-QR?
All PZU84-B6V8-QR units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-B6V8-QR, 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 PZU84-B6V8-QR part is unused and in its original packaging.
Return procedure for PZU84-B6V8-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-B6V8-QR Tags
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MMBZ5240B-7-F
Diodes Incorporated
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MMSZ5231B-7-F
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