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Nexperia USA Inc. PZU84-B7V5R
- Part No.:
- PZU84-B7V5R
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PZU84-B7V5R.pdf
- Description:
- DIODE ZENER 7.5V 250MW TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,638
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Product details
Overview
PZU84-B7V5R from Nexperia is a general-purpose Zener voltage regulator diode in SOT23 package, designed for precision voltage reference and overvoltage protection in low-power circuits. It delivers a nominal 7.5 V Zener voltage with ±2 % tolerance, 60 Ω typical differential resistance at IZ = 5 mA, 4 mV/K temperature coefficient, and 170 pF capacitance at 1 MHz - enabling stable regulation in power supply feedback loops and signal clamping applications.
For engineers reviewing the PZU84-B7V5R datasheet, PZU84-B7V5R pinout, PZU84-B7V5R application, or PZU84-B7V5R equivalent, key selection criteria include its low leakage current (≤0.5 μA at VR = 6 V), hard breakdown knee, and suitability for space-constrained SMT designs requiring stable 7.5 V reference under ≤200 mA forward current.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain a stable 7.5 V reference across load and line variations. Its design emphasizes low dynamic impedance (60 Ω typ. at 5 mA) and tight voltage tolerance (±2 %), supporting accurate feedback in DC-DC converters and LDO regulators.
The device features a hard breakdown knee and very low leakage current (<0.5 μA at 6 V), distinguishing it from higher-leakage variants like PZU84-B11–C51 optimized for noise reduction. Thermal resistance from junction to ambient is 500 K/W on FR4 PCB, limiting continuous power dissipation to 250 mW at 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 7.5 V nominal, ±2 % tolerance - ensures precise 7.35–7.65 V regulation window for feedback sensing |
| Differential Resistance rdif | 60 Ω typical at IZ = 5 mA - minimizes output voltage shift under load current variation |
| Temperature Coefficient SZ | +4 mV/K at IZ = 5 mA - enables predictable drift compensation in temperature-sensitive references |
| Reverse Current IR | ≤0.5 μA at VR = 6 V - reduces quiescent power loss in high-impedance bias networks |
| Capacitance Cd | 170 pF at f = 1 MHz, VR = 0 V - limits high-frequency noise coupling in signal path clamping |
| Forward Voltage VF | ≤0.9 V at IF = 10 mA - supports reliable anode-cathode conduction during transient overvoltage events |
| Peak Reverse Power PZSM | 40 W for tp = 100 μs - provides robust surge immunity against ESD and inductive spikes |
Pinout & Package
SOT23 plastic surface-mounted package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pin pitch, single-sided 70 μm copper FR4 mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A) | Connects to lower-potential node; reverse-biased operation requires cathode at higher potential |
| 2 | Not Connected (n.c.) | Internally isolated; must remain unconnected on PCB to avoid parasitic coupling or thermal stress |
| 3 | Cathode (K) | Connects to regulated voltage rail; carries full Zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables direct use in 7.5 V feedback paths without external trimming resistors |
| Hard breakdown knee | Ensures sharp, repeatable turn-on behavior critical for precision clamping and reference stability |
| Very low leakage current | Reduces error in high-impedance divider networks used in battery-powered sensor references |
| Low differential impedance (60 Ω) | Maintains <±10 mV regulation error across ±1 mA load current changes in feedback loops |
| SOT23 footprint compatibility | Supports automated placement and reflow soldering in compact consumer and industrial PCBs |
Applications
| DC-DC Converter Feedback | LDO Reference Node |
|---|---|
Use Scenario: Stabilizing output voltage of a buck converter via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Provides precise 7.5 V reference to TL431 shunt regulator input, setting output voltage threshold. Use Value: Tight ±2 % tolerance eliminates need for external calibration, reducing BOM count and test time. |
Use Scenario: Generating stable bias voltage for internal bandgap circuitry in low-noise LDOs. IC Role / Device Role / Timing Role: Acts as secondary reference to trim primary bandgap output, improving initial accuracy. Use Value: Low 0.5 μA leakage prevents loading of high-impedance bias nodes, preserving PSRR. |
| Overvoltage Clamp | Signal Level Shifter |
Use Scenario: Protecting microcontroller GPIO pins from 12 V transients on industrial I/O lines. IC Role / Device Role / Timing Role: Clamps induced surges above 7.5 V to safe levels before reaching sensitive inputs. Use Value: 40 W non-repetitive peak power rating absorbs 100 μs ESD pulses without degradation. |
Use Scenario: Translating 3.3 V logic signals to 7.5 V interface levels in mixed-voltage systems. IC Role / Device Role / Timing Role: Biased in forward conduction to lift signal baseline while preserving edge integrity. Use Value: 0.9 V forward drop ensures minimal timing skew and maintains >3 V logic margin at receiver. |
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-C7V5 | Same 7.5 V nominal, ±5 % tolerance; 80 Ω rdif; 200 mW Ptot | Higher voltage uncertainty (±0.375 V vs. ±0.15 V); less suitable for precision feedback | Select when cost sensitivity outweighs regulation accuracy requirements |
| MMSZ4689 | 7.5 V nominal, ±5 %; 100 Ω rdif; 350 mW Ptot; SOD-123 package | Larger footprint; higher thermal resistance; wider tolerance increases calibration burden | Choose only if board layout requires SOD-123 or higher power derating margin is needed |
Compared with BZX84-C7V5 and MMSZ4689, PZU84-B7V5R offers superior voltage accuracy and lower dynamic impedance in the same SOT23 footprint, making it optimal for space-constrained, high-precision regulation where leakage and thermal performance are critical.
Availability
PZU84-B7V5R is available at Aetrix Electronics and suitable for DC-DC converter feedback, LDO reference nodes, overvoltage clamp circuits, and signal level shifting requiring stable component supply and consistent parametric performance across production batches.
Supply support for PZU84-B7V5R 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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.
The PZU84 series belongs to Nexperia's general-purpose Zener regulator portfolio, engineered specifically for compact, low-power voltage reference and protection functions in consumer, industrial, and computing applications.
FAQ
What is the maximum continuous Zener current for PZU84-B7V5R at 25 °C ambient?
The device supports up to 33 mA continuous Zener current at 25 °C ambient, calculated from its 250 mW total power dissipation rating and 7.5 V nominal Zener voltage (IZ = Ptot/VZ). Derating is required above 25 °C per the 500 K/W junction-to-ambient thermal resistance.
Does PZU84-B7V5R have a specified Zener test current?
Yes - electrical characteristics including VZ, rdif, and SZ are specified at IZ = 5 mA for this variant. The datasheet confirms this test condition in Table 8 and Figures 5–8, aligning with JEDEC-standard Zener characterization practices.
Can PZU84-B7V5R be used in bidirectional ESD protection?
No - it is a unidirectional Zener diode optimized for reverse-bias regulation. Its anode is not rated for sustained reverse conduction, and the n.c. pin does not support symmetrical clamping. For bidirectional ESD protection, dedicated TVS diodes such as PESD5V0S1BA should be used instead.
How does the "B" suffix in PZU84-B7V5R affect its performance versus "C" variants?
The "B" suffix denotes the tighter ±2 % voltage tolerance grade and very low leakage current profile, whereas "C" variants offer ±5 % tolerance with intentionally higher leakage for noise reduction. PZU84-B7V5R is selected when regulation accuracy and low standby current are prioritized over fast switching.
PZU84-B7V5R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- PZU84
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 500 mV
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PZU84-B7V5R FAQ
1.How can I place an order for PZU84-B7V5R through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU84-B7V5R 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-B7V5R reliable?
The price and inventory of PZU84-B7V5R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU84-B7V5R is usually 5 days.
3.What payment methods are accepted for PZU84-B7V5R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU84-B7V5R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU84-B7V5R?
PZU84-B7V5R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU84-B7V5R 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-B7V5R?
For technical support, including PZU84-B7V5R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU84-B7V5R requirements.
6.How does Aetrix verify that PZU84-B7V5R is sourced from the original manufacturer or authorized distributors?
All PZU84-B7V5R 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-B7V5R meets industry standards.
7.What is the process for return or replacement of PZU84-B7V5R?
All PZU84-B7V5R units undergo pre-shipment inspection (PSI). If there is an issue with PZU84-B7V5R, 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-B7V5R part is unused and in its original packaging.
Return procedure for PZU84-B7V5R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU84-B7V5R Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZT52C15-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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BZT52C3V6LP-7
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SMAZ12-13-F
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