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Nexperia USA Inc. NZX7V5B,133
- Part No.:
- NZX7V5B,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
NZX7V5B,133.pdf
- Description:
- DIODE ZENER 7.4V 500MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:4,650
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Product details
Overview
NZX7V5B,133 from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) glass package, designed for precision voltage regulation at 7.5 V nominal working voltage with ±5% tolerance (7.07–7.45 V), 15 Ω differential resistance at IZ = 5 mA, and ≤1 µA reverse leakage current. It delivers stable reference performance in low-power analog circuits, power supply feedback loops, and overvoltage protection stages.
For engineers reviewing the NZX7V5B,133 datasheet, NZX7V5B,133 pinout, NZX7V5B,133 application, or NZX7V5B,133 equivalent, this component serves as a cost-effective, thermally robust, axial-leaded Zener solution where tight voltage tolerance, low dynamic impedance, and long-term stability under ambient temperatures from −55 °C to +175 °C are required.
Technical Context
This Zener operates in reverse breakdown mode with a specified test current of 5 mA, exhibiting a temperature coefficient near zero around 7.5 V-enabling minimal drift across operating temperature ranges. Its junction-to-ambient thermal resistance is 380 K/W in free air on FR4 PCB, supporting reliable operation without heatsinking in low-dissipation designs.
The device complies with IEC 60134 absolute maximum ratings: 500 mW total power dissipation at Ttp ≤ 25 °C, 250 mA forward current limit, and 175 °C maximum junction temperature. The cathode is marked by a band on the glass body, confirming unambiguous polarity identification for manual or automated assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.07–7.45 V at IZ = 5 mA - defines precise regulation window for feedback or clamping |
| Differential Resistance (rdif) | 15 Ω max at IZ = 5 mA - ensures minimal output voltage variation under load changes |
| Reverse Leakage (IR) | ≤1 µA at VR = 5 V - guarantees negligible standby current in high-impedance bias networks |
| Total Power Dissipation (Ptot) | 500 mW at Ttp ≤ 25 °C - sets safe DC/continuous operating limit without derating |
| Thermal Resistance (Rth(j-a)) | 380 K/W in free air - determines junction temperature rise per watt, critical for reliability margining |
| Forward Voltage (VF) | ≤1.5 V at IF = 200 mA - supports use as low-drop rectifier or clamp in dual-role circuits |
| Operating Temperature | −55 °C to +175 °C ambient - enables deployment in industrial, automotive under-hood, and aerospace environments |
Pinout & Package
Package: SOD27 (SC-40), hermetically sealed axial-leaded glass package with 25.4 mm minimum lead length and 4.25 mm maximum body diameter. Cathode identified by single black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node; accepts reverse-bias voltage for Zener conduction |
| 2 (non-banded end) | Anode | Ground or lower-potential reference point; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and parameter drift over decades in harsh environments |
| Low differential resistance | 15 Ω enables <15 mV output shift per 1 mA load change-critical for precision references |
| Low leakage current | ≤1 µA at 5 V reverse bias minimizes error in high-impedance divider networks |
| Wide temperature range | −55 °C to +175 °C operation supports deployment in engine control units and downhole tools |
| Standard axial lead form factor | Enables compatibility with legacy through-hole assembly lines and hand-soldering workflows |
Applications
| Power Supply Feedback Regulation | Overvoltage Clamp Protection |
|---|---|
|
Use Scenario: Stabilizing output voltage in linear regulators or switching converter feedback paths using resistive dividers. IC Role / Device Role / Timing Role: Provides precise 7.5 V reference point to error amplifier input. Use Value: Tight 7.07–7.45 V tolerance and 15 Ω rdif ensure ±1% output regulation accuracy under line/load transients. |
Use Scenario: Limiting transient voltage spikes on microcontroller I/O lines or sensor inputs. IC Role / Device Role / Timing Role: Shunts excess energy to ground when voltage exceeds 7.45 V. Use Value: Sub-µA leakage preserves signal integrity at rest; fast response prevents latch-up in 3.3 V/5 V systems. |
| Reference Voltage Source | Current Source Biasing |
|
Use Scenario: Generating stable bias voltages for op-amp comparators or ADC reference buffers. IC Role / Device Role / Timing Role: Delivers low-noise, temperature-stable 7.5 V node independent of supply ripple. Use Value: Near-zero tempco at 7.5 V and 380 K/W Rth(j-a) maintain <±0.5% drift from −40 °C to +85 °C. |
Use Scenario: Setting constant current in LED driver or transistor bias circuits via series resistor. IC Role / Device Role / Timing Role: Maintains fixed voltage drop across current-setting resistor. Use Value: Low rdif ensures current stability within ±2% across 10–100 mA load variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C7V5 | Plastic DO-35 package; 7.3–7.7 V tolerance; 20 Ω rdif; 10 µA IR at 5 V | Lower cost but higher leakage and wider VZ spread; unsuitable for precision biasing | Select when cost dominates and ±5% regulation is acceptable |
| 1N4733A | DO-41 package; 7.14–7.86 V tolerance; 35 Ω rdif; 10 µA IR at 5 V; 1 W rating | Higher power handling but looser tolerance and poorer stability; requires heatsinking above 250 mW | Select only for higher-power clamping where 7.5 V nominal is secondary to thermal margin |
Compared with BZX55C7V5 and 1N4733A, NZX7V5B,133 offers superior voltage accuracy, lower dynamic impedance, and hermetic reliability-making it optimal for space-constrained, high-stability analog designs where long-term parameter drift must be minimized.
Availability
NZX7V5B,133 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, and medical instrumentation requiring stable component supply with traceable sourcing and consistent parametric performance across production lots.
Supply support for NZX7V5B,133 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and robustness for industrial, automotive, and consumer markets.
The NZX series targets general-purpose Zener regulation with hermetic glass packaging, optimized for long-life stability and wide-temperature operation in mission-critical analog subsystems.
FAQ
What is the Zener voltage tolerance for NZX7V5B,133?
The NZX7V5B,133 has a nominal Zener voltage of 7.5 V with a guaranteed range of 7.07 V to 7.45 V at IZ = 5 mA, corresponding to a ±5% tolerance band as defined in Table 8 of the Nexperia datasheet Rev. 4.
Can NZX7V5B,133 be used in surface-mount designs?
No-NZX7V5B,133 uses an axial-leaded SOD27 (SC-40) glass package with 25.4 mm minimum lead length, intended exclusively for through-hole mounting. It lacks solder pads or land patterns compatible with reflow or wave soldering processes.
What is the maximum continuous power dissipation at 85 °C ambient?
At 85 °C ambient, the device's power rating must be derated linearly from 500 mW at 25 °C using its 380 K/W Rth(j-a). Maximum continuous dissipation is 316 mW, calculated as 500 mW × (1 − (85 − 25)/380).
How is polarity identified on the NZX7V5B,133 package?
Polarity is marked by a single black band on the glass body, indicating the cathode terminal. Pin 1 (banded end) connects to the cathode; Pin 2 (unmarked end) is the anode-consistent with standard diode marking conventions and confirmed in Table 2 of the datasheet.
NZX7V5B,133 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- NZX
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.4 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -55°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ALF2
NZX7V5B,133 FAQ
1.How can I place an order for NZX7V5B,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for NZX7V5B,133 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 NZX7V5B,133 reliable?
The price and inventory of NZX7V5B,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX7V5B,133 is usually 5 days.
3.What payment methods are accepted for NZX7V5B,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX7V5B,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZX7V5B,133?
NZX7V5B,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZX7V5B,133 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 NZX7V5B,133?
For technical support, including NZX7V5B,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX7V5B,133 requirements.
6.How does Aetrix verify that NZX7V5B,133 is sourced from the original manufacturer or authorized distributors?
All NZX7V5B,133 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 NZX7V5B,133 meets industry standards.
7.What is the process for return or replacement of NZX7V5B,133?
All NZX7V5B,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX7V5B,133, 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 NZX7V5B,133 part is unused and in its original packaging.
Return procedure for NZX7V5B,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NZX7V5B,133 Tags
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MM5Z5V1ST1G
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