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Nexperia USA Inc. PZU6.8B3A,115
- Part No.:
- PZU6.8B3A,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
PZU6.8B3A,115.pdf
- Description:
- DIODE ZENER 6.8V 320MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,807
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Product details
Overview
PZU6.8B3A,115 from Nexperia is a precision Zener voltage regulator diode in SOD323 (SC-76) package, designed for low-power voltage reference and overvoltage protection in space-constrained PCBs. It delivers 6.8 V nominal Zener voltage with ±2 % tolerance (B3 series), 60 Ω max differential resistance at IZ = 5 mA, 20 nA max reverse current at IZ = 0.5 mA, and 3.5 mV/K temperature coefficient - enabling stable regulation in consumer power rails and sensor bias networks.
For engineers reviewing the PZU6.8B3A,115 datasheet, PZU6.8B3A,115 pinout, PZU6.8B3A,115 application, or PZU6.8B3A,115 equivalent, this device is selected for tight-tolerance voltage clamping in low-current analog circuits, ESD-protected I/O interfaces, and compact DC-DC feedback references where thermal stability and low leakage are critical.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its cathode-anode terminals under controlled current conditions. Its B3 tolerance grade ensures ±2 % accuracy at 6.8 V, and its low 20 nA reverse leakage at 0.5 mA enables high-impedance biasing without loading sensitive nodes.
The device exhibits a 3.5 mV/K temperature coefficient optimized for minimal drift between 25 °C and 150 °C, and achieves 60 Ω dynamic impedance at 5 mA test current - supporting consistent regulation even with moderate load transients in non-switching power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V nominal, ±2 % tolerance (B3 series) - ensures precise clamping within 6.66–6.94 V at IZ = 5 mA |
| Differential Resistance (rdif) | ≤60 Ω at IZ = 5 mA - maintains low output impedance for stable regulation under small current variations |
| Reverse Current (IR) | ≤20 nA at IZ = 0.5 mA - minimizes parasitic loading in high-impedance reference or sensing paths |
| Temperature Coefficient (SZ) | +3.5 mV/K - provides predictable, linear voltage drift over temperature for compensated designs |
| Total Power Dissipation (Ptot) | 320 mW at Tamb ≤ 25 °C on FR4 PCB - supports continuous operation in low-power linear regulators and protection circuits |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs - enables transient surge suppression without permanent degradation |
| Junction Temperature (Tj) | 150 °C maximum - allows reliable operation in thermally demanding industrial and automotive-adjacent environments |
Pinout & Package
SOD323 (SC-76) surface-mount plastic package: 1.7 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity marker (bar) aligns with this terminal for correct orientation during placement |
| 2 | Anode | Connected to ground or lower-potential rail; forms reverse-biased junction enabling Zener breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance (B3) | Enables tighter regulation than standard ±5 % parts, reducing need for post-regulation trimming in precision analog stages |
| Low 20 nA reverse leakage at 0.5 mA | Preserves signal integrity in high-impedance sensor biasing and micro-power monitoring circuits |
| Optimized 3.5 mV/K temperature coefficient | Minimizes voltage drift across -55 °C to +150 °C ambient range without external compensation components |
| 60 Ω dynamic impedance at 5 mA | Delivers stable reference voltage under varying load currents typical of op-amp input stages and ADC reference dividers |
| SOD323 footprint compatibility | Supports automated placement and reflow on high-density PCBs while maintaining thermal performance via standard FR4 mounting |
Applications
| Power Rail Clamping | Sensor Bias Reference |
|---|---|
Use Scenario: Protecting 5 V or 6.8 V logic supply lines from transient overvoltage events in USB-powered peripherals. IC Role / Device Role / Timing Role: Zener clamp placed between rail and ground to shunt excess energy above 6.94 V threshold. Use Value: Prevents latch-up or damage to downstream LDOs and level translators using only 20 nA standby leakage. |
Use Scenario: Providing stable bias voltage to MEMS pressure sensor bridge elements in portable medical devices. IC Role / Device Role / Timing Role: Low-drift 6.8 V reference source for Wheatstone bridge excitation. Use Value: Enables <1 LSB error in 12-bit ADC readings over full operating temperature range due to +3.5 mV/K coefficient. |
| ADC Reference Divider | ESD-Safe I/O Protection |
Use Scenario: Generating precise 2.5 V reference from 6.8 V rail via resistor divider in data acquisition modules. IC Role / Device Role / Timing Role: High-accuracy Zener sets upper divider node; low rdif prevents ratio shift under load. Use Value: Maintains <0.1 % divider accuracy despite 10 µA load variation from ADC input capacitance charging. |
Use Scenario: Adding secondary protection to GPIO pins exposed to external connectors in industrial HMI panels. IC Role / Device Role / Timing Role: Cathode tied to I/O line, anode to ground - clamps fast ESD pulses before TVS triggers. Use Value: 40 W non-repetitive peak power rating absorbs 2 kV HBM surges without degradation when used upstream of primary TVS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B6V8,115 | Same 6.8 V ±2 %, but higher 100 nA IR at 0.5 mA and 80 Ω rdif | Less suitable for ultra-low-leakage sensor bias; acceptable for general-purpose clamping | Select when cost sensitivity outweighs leakage or impedance requirements |
| MMSZ5235B-7-F | 6.8 V ±5 % (B grade), 100 Ω rdif, 5 µA IR at 1 V - wider tolerance, higher leakage | Only appropriate for non-critical voltage thresholds where ±5 % is acceptable | Choose only if legacy design reuse or distributor stock availability drives selection |
Compared with BZX384-B6V8,115 and MMSZ5235B-7-F, PZU6.8B3A,115 offers superior leakage control and lower dynamic impedance - making it the preferred choice for precision analog reference and low-power sensor systems where voltage stability directly impacts measurement fidelity.
Availability
PZU6.8B3A,115 is available at Aetrix Electronics and suitable for power rail clamping, sensor bias reference, and ADC reference divider applications requiring stable component supply, long-term parametric consistency, and RoHS-compliant SMD packaging.
Supply support for PZU6.8B3A,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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.
The PZUxBA series belongs to Nexperia's precision Zener regulator family, engineered specifically for stable voltage reference and low-leakage clamping in compact, thermally constrained PCB layouts.
FAQ
What is the maximum continuous Zener current for PZU6.8B3A,115?
The device supports up to 200 mA forward current per Absolute Maximum Ratings, but continuous Zener operation is limited by thermal dissipation. At 25 °C ambient on standard FR4, the 320 mW Ptot rating allows ~47 mA average Zener current (320 mW ÷ 6.8 V). Derating is required above 25 °C per the 255 K/W Rth(j-sp) value.
How does the B3 tolerance grade differ from B1 or B2 in the PZUxBA series?
B3 denotes ±2 % tolerance across the full 2.4 V–51 V range, identical to B1 and B2 in accuracy. The distinction lies in marking: B3 uses LU for PZU6.8*A (per Table 4), while B1/B2 use LS/LT. All three grades share identical electrical characteristics and thermal performance - only marking and ordering codes differ.
Can PZU6.8B3A,115 be used in place of a 6.8 V TL431 shunt regulator?
No - the PZU6.8B3A,115 is a passive two-terminal Zener diode requiring external current limiting, whereas the TL431 is an active three-terminal programmable shunt regulator with adjustable output and higher accuracy. They serve different circuit roles: Zener for simple clamping, TL431 for precision feedback in switching supplies.
What is the recommended soldering profile for the SOD323 package?
Nexperia specifies reflow soldering per JEDEC J-STD-020: peak temperature 260 °C max, time above 217 °C ≤ 60 s, ramp-up rate ≤ 3 °C/s. The SOD323 footprint in Figure 10 requires 0.5 mm wide solder lands with 0.6 mm solder resist opening - critical for avoiding tombstoning and ensuring thermal reliability.
PZU6.8B3A,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±2%
- Power - Max:
- 320 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 3.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
PZU6.8B3A,115 FAQ
1.How can I place an order for PZU6.8B3A,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PZU6.8B3A,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 PZU6.8B3A,115 reliable?
The price and inventory of PZU6.8B3A,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PZU6.8B3A,115 is usually 5 days.
3.What payment methods are accepted for PZU6.8B3A,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PZU6.8B3A,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PZU6.8B3A,115?
PZU6.8B3A,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PZU6.8B3A,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 PZU6.8B3A,115?
For technical support, including PZU6.8B3A,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PZU6.8B3A,115 requirements.
6.How does Aetrix verify that PZU6.8B3A,115 is sourced from the original manufacturer or authorized distributors?
All PZU6.8B3A,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 PZU6.8B3A,115 meets industry standards.
7.What is the process for return or replacement of PZU6.8B3A,115?
All PZU6.8B3A,115 units undergo pre-shipment inspection (PSI). If there is an issue with PZU6.8B3A,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 PZU6.8B3A,115 part is unused and in its original packaging.
Return procedure for PZU6.8B3A,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PZU6.8B3A,115 Tags
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