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Nexperia USA Inc. PZU84-B2V7-QR
- Part No.:
- PZU84-B2V7-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-B2V7-QR.pdf
- Description:
- DIODE ZENER 2.78V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,869
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Product details
Overview
PZU84-B2V7-QR from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOT23 package, rated for 2.7 V nominal breakdown voltage at 5 mA, with 1000 Ω differential resistance at 5 mA, 1.0 μA reverse current at 2.0 V, and qualified to AEC-Q101 for automotive power rail stabilization.
For engineers reviewing the PZU84-B2V7-QR datasheet, PZU84-B2V7-QR pinout, PZU84-B2V7-QR application, or PZU84-B2V7-QR equivalent, this part supports precision low-voltage reference generation, ECU supply rail clamping, and sensor biasing where tight voltage tolerance and low leakage are critical.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its cathode-anode terminals under varying load and temperature conditions. Its hard breakdown knee and low dynamic impedance (1000 Ω at 5 mA) ensure minimal voltage deviation during transient current changes.
Designed for automotive-grade reliability, 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 standard FR4 PCB - enabling robust operation in engine control and body electronics environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 2.7 V at IZ = 5 mA - defines precise regulation point for low-voltage reference circuits |
| Zener Tolerance | ±2 % - ensures tight voltage accuracy without post-production trimming |
| Differential Resistance | 1000 Ω at IZ = 5 mA - limits output voltage variation under load current shifts |
| Reverse Current | 1.0 μA at VR = 2.0 V - enables ultra-low standby power consumption in always-on systems |
| Forward Voltage | 0.9 V at IF = 10 mA - supports bidirectional protection when used with series resistor |
| Total Power Dissipation | 250 mW at Tamb = 25 °C - sets maximum continuous DC power handling on standard PCB layout |
| Junction Temperature Range | −55 °C to +150 °C - guarantees functionality across full automotive under-hood thermal envelope |
Pinout & Package
SOT23 plastic surface-mounted package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body, with anode (Pin 1), not-connected (Pin 2), and cathode (Pin 3).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | DC current entry point during forward conduction; tied to lower-potential node in Zener regulation |
| 2 | Not Connected | Internally unconnected terminal - must remain floating; no PCB trace or solder joint required |
| 3 | Cathode | DC current exit point during reverse breakdown; connected to regulated voltage node |
Key Features
| Feature | Design Value |
|---|---|
| Hard breakdown knee | Enables sharp, predictable turn-on at 2.7 V - eliminates ambiguity in regulation threshold |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity testing, and mechanical shock per discrete semiconductor standard |
| Low leakage current | 1.0 μA at 2.0 V reverse bias - minimizes quiescent current draw in battery-sensitive modules |
| Two tolerance options | ±2 % (B-series) and ~±5 % (C-series) - allows cost-performance trade-off without redesign |
| Optimized thermal performance | 330 K/W junction-to-solder-point thermal resistance - improves reliability under pulsed surge conditions |
Applications
| Engine Control Unit (ECU) Reference | Automotive Sensor Biasing |
|---|---|
Use Scenario: Stabilizing 2.7 V reference for analog front-end of knock sensor interface circuitry. IC Role / Device Role / Timing Role: Zener diode provides fixed, low-drift voltage reference for ADC input scaling and op-amp biasing. Use Value: ±2 % tolerance and hard breakdown knee ensure consistent sensor signal conditioning across −40 °C to +125 °C operating range. |
Use Scenario: Supplying bias voltage to Hall-effect position sensor in transmission control module. IC Role / Device Role / Timing Role: Regulator maintains constant 2.7 V bias despite battery voltage fluctuations between 9 V and 16 V. Use Value: 1.0 μA leakage at 2.0 V prevents measurable current drain during vehicle sleep mode. |
| Body Control Module (BCM) Rail Clamping | Infotainment System Power Sequencing |
Use Scenario: Clamping 3.3 V logic rail against transients induced by relay switching in door module. IC Role / Device Role / Timing Role: Zener absorbs short-duration overvoltage spikes while maintaining safe logic-level margin. Use Value: 40 W non-repetitive peak reverse power rating handles 100 μs surges without degradation. |
Use Scenario: Generating clean enable signal for LDO startup sequence in head unit power management. IC Role / Device Role / Timing Role: Provides stable 2.7 V trigger threshold for comparator-based power-good detection. Use Value: Low differential resistance (1000 Ω) ensures minimal hysteresis and fast response to supply ramp-up. |
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-C2V7 | ±5 % tolerance, higher rdif (1200 Ω), 2.0 μA IR at 2.0 V | Acceptable for non-critical biasing where cost is prioritized over precision | Select when ±5 % voltage drift is acceptable and leakage budget allows 2× increase |
| MMSZ4678T1G | ±5 % tolerance, 2.7 V nominal, 1500 Ω rdif, 1.0 μA IR at 2.0 V, SOD-123 package | Requires footprint change; suitable for higher-power layouts with larger thermal pad | Choose only if board space permits SOD-123 and thermal design accommodates 350 mW rating |
Compared with PZU84-B2V7-QR, BZX84-C2V7 trades tighter tolerance and lower leakage for lower cost, while MMSZ4678T1G offers identical leakage but looser regulation and different thermal behavior due to larger package - making PZU84-B2V7-QR optimal for space-constrained, high-precision automotive nodes.
Availability
PZU84-B2V7-QR is available at Aetrix Electronics and suitable for automotive ECU reference generation, sensor biasing, and body control module rail clamping requiring stable component supply with AEC-Q101 compliance.
Supply support for PZU84-B2V7-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 consumer markets.
The PZU84-Q series belongs to Nexperia's automotive-qualified Zener regulator portfolio, engineered specifically for stable voltage reference and rail protection in harsh-temperature, safety-critical vehicle subsystems.
FAQ
What is the Zener voltage test condition for PZU84-B2V7-QR?
The nominal 2.7 V Zener voltage is specified at 5 mA test current (IZ = 5 mA) and 25 °C junction temperature. This condition ensures repeatable measurement across production lots and aligns with industry-standard Zener characterization methodology defined in IEC 60747-2.
Can PZU84-B2V7-QR be used in forward-biased configuration?
Yes - it exhibits 0.9 V forward voltage at 10 mA, enabling dual-use as both Zener regulator and low-drop rectifier. However, its primary design intent and qualification are for reverse-bias regulation; forward conduction should be limited to brief transient suppression or diagnostic signaling.
Is Pin 2 electrically isolated or internally bonded?
Pin 2 is explicitly marked "not connected" in the official Nexperia pinning diagram and has no internal bond wire or die connection. It must remain unconnected on PCB - no trace, pad, or solder joint - to avoid parasitic coupling or mechanical stress on the leadframe.
How does the ±2 % tolerance impact regulation accuracy over temperature?
At 2.7 V nominal, ±2 % corresponds to ±54 mV initial tolerance. Combined with a typical temperature coefficient of −3.5 mV/K (per datasheet Fig. 3), total variation remains within ±80 mV across −40 °C to +125 °C - sufficient for most automotive analog reference applications.
PZU84-B2V7-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):
- 2.78 V
- Tolerance:
- ±4.5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 20 µA @ 1 V
- 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-B2V7-QR FAQ
1.How can I place an order for PZU84-B2V7-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-B2V7-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-B2V7-QR reliable?
The price and inventory of PZU84-B2V7-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-B2V7-QR is usually 5 days.
3.What payment methods are accepted for PZU84-B2V7-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-B2V7-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-B2V7-QR?
PZU84-B2V7-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-B2V7-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-B2V7-QR?
For technical support, including PZU84-B2V7-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-B2V7-QR requirements.
6.How does Aetrix verify that PZU84-B2V7-QR is sourced from the original manufacturer or authorized distributors?
All PZU84-B2V7-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-B2V7-QR meets industry standards.
7.What is the process for return or replacement of PZU84-B2V7-QR?
All PZU84-B2V7-QR units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-B2V7-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-B2V7-QR part is unused and in its original packaging.
Return procedure for PZU84-B2V7-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-B2V7-QR Tags
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