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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. NZX7V5A,133

Name: NZX7V5A,133
Brand: Nexperia USA Inc.
SKU: NZX7V5A,133
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NZX7V5A,133

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: DO-204AH, DO-35, Axial

Datasheet:: NZX7V5A,133.pdf

Description:: DIODE ZENER 7.15V 500MW ALF2

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NZX7V5A,133 from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) glass package, designed for precision voltage regulation and reference functions at 7.5 V nominal Zener voltage. It delivers 15 Ω typical differential resistance at I_Z = 5 mA, ≤1 µA reverse leakage at V_R = 5 V, and 500 mW total power dissipation - enabling stable clamping in low-power analog monitoring circuits.

For engineers reviewing the NZX7V5A,133 datasheet, NZX7V5A,133 pinout, NZX7V5A,133 application, or NZX7V5A,133 equivalent, key selection criteria include its 7.07–7.45 V working voltage range at 5 mA, axial-leaded SOD27 thermal performance (R_th(j-a) = 380 K/W), cathode-marked polarity, and suitability for non-automotive general-purpose regulation where hermetic reliability and low temperature coefficient are required.

Technical Context

This Zener diode operates in reverse breakdown mode with a tightly controlled nominal Zener voltage of 7.5 V (min 7.07 V, max 7.45 V at I_Z = 5 mA). Its low 15 Ω differential resistance ensures minimal voltage variation under load changes, while the ≤1 µA reverse current at 5 V supports high-impedance biasing and sensing nodes.

The device uses a glass-encapsulated axial lead structure (SOD27/SC-40) with no internal passivation layers - relying on hermetic sealing for long-term stability in industrial ambient conditions (−55 °C to +175 °C storage, −55 °C to +175 °C operating). Thermal resistance from junction to ambient is 380 K/W on FR4 PCB without copper pour.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	7.07–7.45 V at I_Z = 5 mA - defines precise clamping threshold for 7.5 V reference designs
Differential Resistance r_dif	15 Ω typical - ensures <±75 mV output shift per ±1 mA current change in regulation loop
Reverse Current I_R	≤1 µA at V_R = 5 V - enables use in high-impedance voltage divider or sensor bias networks
Total Power Dissipation P_tot	500 mW at T_tp ≤ 25 °C - supports continuous operation up to ~130 mW at 75 °C ambient on standard FR4
Forward Voltage V_F	≤1.5 V at I_F = 200 mA - allows safe forward conduction during transient overvoltage recovery
Junction Temperature T_j	−55 °C to +175 °C - permits deployment in extended-temperature industrial control and metering
Thermal Resistance R_th(j-a)	380 K/W in free air - determines derating curve: max power drops to ~220 mW at 70 °C ambient

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 black band.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode	Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs
2	Anode	Connected to ground or lower-potential rail; completes reverse-bias path for regulation

Key Features

Feature	Design Value
Hermetic glass encapsulation	Prevents moisture ingress and parameter drift over decades in unsealed enclosures
Low differential resistance	15 Ω typical enables <±0.1% regulation error across ±1 mA load variation
Low leakage current	≤1 µA at 5 V supports microamp-level biasing in battery-powered sensor front-ends
Stable temperature coefficient	~−2 mV/K near 7.5 V (per Fig 4) - predictable drift behavior for compensated references
Axial lead mechanical robustness	25.4 mm min lead length accommodates through-hole mounting with vibration tolerance

Applications

Industrial Sensor Signal Conditioning

Low-Power Microcontroller Voltage Reference

Use Scenario: Stabilizing ADC reference input in a 4–20 mA loop transmitter operating at 85 °C ambient.

IC Role / Device Role / Timing Role: Zener diode provides fixed 7.5 V reference for op-amp gain-setting and ADC VREF buffer.

Use Value: 15 Ω r_dif limits reference voltage shift to <±30 mV across 2 mA supply current variation, ensuring <0.4% full-scale error.

Use Scenario: Generating a stable 7.5 V rail for an ultra-low-power MCU's internal LDO input in a portable environmental monitor.

IC Role / Device Role / Timing Role: Acts as shunt regulator feeding a 3.3 V LDO; reverse leakage ≤1 µA minimizes quiescent drain.

Use Value: Hermetic SOD27 construction prevents long-term V_Z drift, maintaining reference accuracy over 10-year field life.

Overvoltage Protection Clamp

Linear Power Supply Regulation

Use Scenario: Clamping transient spikes on a 5 V logic bus exposed to ESD in factory automation I/O modules.

IC Role / Device Role / Timing Role: Shunt clamp activated above 7.5 V to divert surge current away from downstream logic ICs.

Use Value: 500 mW P_tot rating absorbs 100 ns/1 A transients without degradation; cathode marking ensures correct orientation.

Use Scenario: Regulating unregulated 12 V DC from a transformer-rectifier stage to feed analog circuitry in test equipment.

IC Role / Device Role / Timing Role: Zener-based series-pass regulator with emitter-follower transistor for 7.5 V output.

Use Value: Low 15 Ω r_dif yields <100 mV line regulation error over ±1 V input variation, improving output stability.

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; 20 Ω r_dif; 2 µA I_R at 5 V; 500 mW rating	Lower cost but reduced long-term stability and higher leakage in humid environments	Preferred for cost-sensitive consumer designs where hermeticity is not required
1N4733A	DO-41 package; 19 Ω r_dif; 5 µA I_R at 5 V; 1 W rating	Higher power handling but larger footprint and looser V_Z tolerance (±5%)	Chosen when >500 mW transient absorption is needed and board space allows DO-41

Compared with BZX55C7V5 and 1N4733A, NZX7V5A,133 offers superior long-term V_Z stability via hermetic sealing, tighter 7.07–7.45 V tolerance, and lowest leakage - making it optimal for precision industrial references where calibration interval and field lifetime are critical.

Availability

NZX7V5A,133 is available at Aetrix Electronics and suitable for industrial sensor conditioning, low-power MCU reference generation, overvoltage clamping, and linear power supply regulation requiring stable component supply and long-term parametric consistency.

Supply support for NZX7V5A,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 and automotive markets.

The NZX series targets general-purpose Zener regulation with hermetic reliability - engineered for applications demanding decades-long stability in harsh ambient conditions without re-calibration.

FAQ

What is the exact Zener voltage range for NZX7V5A,133 at 5 mA test current?

The confirmed Zener voltage range is 7.07 V to 7.45 V at I_Z = 5 mA and T_j = 25 °C, per Table 8 of the official Nexperia datasheet Rev. 4. This 380 mV span reflects the 'A' grade tolerance for the 7.5 V nominal rating and is measured under pulsed conditions (t_p ≤ 300 µs, duty cycle ≤ 0.02) to avoid self-heating effects.

Can NZX7V5A,133 be used in surface-mount designs?

No - NZX7V5A,133 uses an axial-leaded SOD27 (SC-40) glass package with 25.4 mm minimum lead length, designed exclusively for through-hole mounting. It lacks solder pads or gull-wing leads required for SMT assembly. For surface-mount equivalents, consider Nexperia's BZX384-B7V5 (SOD-323) or BZX84-C7V5 (SOT-23), which differ in package, thermal resistance, and leakage.

How does the thermal resistance affect maximum power at elevated ambient temperatures?

With R_th(j-a) = 380 K/W on FR4, the junction-to-ambient temperature rise is ΔT = P × 380. At 70 °C ambient, the max allowable power before reaching T_j = 175 °C is (175 − 70)/380 ≈ 276 mW. Derating follows a linear curve: 500 mW at 25 °C, 370 mW at 50 °C, and 276 mW at 70 °C - all assuming no copper pour or forced airflow.

Is NZX7V5A,133 qualified for automotive applications?

No - the datasheet explicitly states "Non-automotive qualified products" and confirms this part is neither tested nor warranted for automotive use. It lacks AEC-Q200 qualification, has no guaranteed PPAP documentation, and its temperature specification (−55 °C to +175 °C) covers storage only - not operational requirements per ISO 16750. Automotive designs require parts like BZX84-A7V5 or DZ23C7V5 with formal AEC-Q200 certification.

NZX7V5A,133 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: NZX

Package/Case:: DO-204AH, DO-35, Axial

Packaging:: Cut Tape (CT)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 7.15 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

NZX7V5A,133 FAQ

1.How can I place an order for NZX7V5A,133 through Aetrix?

Please submit a Request for Quotation (RFQ) for NZX7V5A,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 NZX7V5A,133 reliable?

The price and inventory of NZX7V5A,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX7V5A,133 is usually 5 days.

3.What payment methods are accepted for NZX7V5A,133?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX7V5A,133 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NZX7V5A,133?

NZX7V5A,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NZX7V5A,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 NZX7V5A,133?

For technical support, including NZX7V5A,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX7V5A,133 requirements.

6.How does Aetrix verify that NZX7V5A,133 is sourced from the original manufacturer or authorized distributors?

All NZX7V5A,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 NZX7V5A,133 meets industry standards.

7.What is the process for return or replacement of NZX7V5A,133?

All NZX7V5A,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX7V5A,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 NZX7V5A,133 part is unused and in its original packaging.

Return procedure for NZX7V5A,133:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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