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

Nexperia USA Inc. NZX7V5D,133

Name: NZX7V5D,133
Brand: Nexperia USA Inc.
SKU: NZX7V5D,133
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NZX7V5D,133

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: NZX7V5D,133.pdf

Description:: DIODE ZENER 7.7V 500MW ALF2

Quantity:: RFQ Add To RFQ list

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Inventory:8,705

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Product details

Overview

NZX7V5D,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 I_Z = 5 mA, and ≤1 µA reverse leakage at V_R = 5 V. It delivers stable reference performance in low-power analog circuits and power supply feedback paths.

For engineers reviewing the NZX7V5D,133 datasheet, NZX7V5D,133 pinout, NZX7V5D,133 application, or NZX7V5D,133 equivalent, this device is selected for its low thermal resistance (R_th(j-a) = 380 K/W), axial-leaded glass construction, and tight Zener voltage distribution - critical for voltage clamping, overvoltage protection, and analog reference design in industrial and consumer electronics.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its terminals under controlled current conditions. Its 7.5 V nominal Zener voltage is specified at I_Z = 5 mA, with temperature coefficient optimized for minimal drift across –55 °C to +175 °C ambient range.

The SOD27 package provides hermetic sealing for long-term stability and moisture resistance, while the axial lead configuration supports through-hole mounting on FR4 PCBs without thermal pads. Thermal resistance from junction to ambient is 380 K/W in free air, limiting continuous dissipation to 500 mW at T_amb ≤ 25 °C.

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 overvoltage protection and reference circuits
Differential Resistance (r_dif)	15 Ω max at I_Z = 5 mA - ensures minimal voltage shift under load variation, improving regulation accuracy
Reverse Leakage Current (I_R)	≤1 µA at V_R = 5 V - guarantees low standby power loss and high impedance in off-state applications
Total Power Dissipation (P_tot)	500 mW max at T_tp ≤ 25 °C - sets safe DC operating limit for continuous regulation without heatsinking
Junction Temperature (T_j)	–65 to +175 °C - enables operation in extended industrial environments including automotive under-hood proximity
Thermal Resistance (R_th(j-a))	380 K/W in free air - determines self-heating rise per watt, critical for derating in compact enclosures

Pinout & Package

The NZX7V5D,133 uses a two-terminal axial-leaded SOD27 (SC-40) hermetically sealed glass package. The cathode is marked by a band on the glass body; leads are tinned copper alloy for solderability and mechanical reliability.

Pin/Terminal	Circuit Role	Design Meaning
1 (Banded end)	Cathode	Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs
2 (Unbanded end)	Anode	Connected to ground or lower-potential rail; completes current path during regulation

Key Features

Feature	Design Value
Hermetic glass encapsulation	Prevents moisture ingress and parameter drift over decades of operation in humid or corrosive environments
Low differential resistance	15 Ω max ensures <15 mV output shift per 1 mA load change - essential for high-accuracy references
Tight Zener voltage tolerance	±5% (7.07–7.45 V) enables direct replacement without circuit recalibration in legacy designs
High-temperature capability	Rated to +175 °C junction temperature - suitable for use near power components or in sealed industrial housings

Applications

Power Supply Feedback Loop

Overvoltage Clamp Circuit

Use Scenario: Used in the feedback divider of an isolated flyback converter to regulate output voltage.

IC Role / Device Role / Timing Role: Provides stable 7.5 V reference to optocoupler input, enabling closed-loop regulation.

Use Value: Low r_dif minimizes error due to bias current variation, improving output accuracy to ±1.5% over line/load/temperature.

Use Scenario: Placed across a microcontroller's V_DD rail to protect against transient surges above 8 V.

IC Role / Device Role / Timing Role: Acts as shunt clamp, diverting excess current when voltage exceeds 7.45 V.

Use Value: Hermetic seal prevents degradation during repeated surge events, maintaining clamping threshold over >100,000 cycles.

Reference Voltage Source

Signal Level Shifting

Use Scenario: Supplies reference voltage to an ADC input buffer in a battery-powered sensor node.

IC Role / Device Role / Timing Role: Generates stable 7.5 V reference for analog front-end scaling.

Use Value: ≤1 µA leakage ensures <10 nA loading error - critical for high-impedance sensor interfaces.

Use Scenario: Shifts a 3.3 V logic signal to 7.5 V level for driving a high-side gate driver input.

IC Role / Device Role / Timing Role: Functions as passive level translator via Zener clamping to 7.5 V rail.

Use Value: Axial leads allow direct placement between signal trace and rail, minimizing parasitic inductance in fast-switching paths.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX79-C7V5,113	Plastic DO-35 package; 7.5 V ±5%, r_dif = 20 Ω max; R_th(j-a) = 500 K/W	Lower thermal performance and non-hermetic construction reduce long-term stability in humid environments	Select when cost sensitivity outweighs lifetime reliability requirements in benign indoor applications
1N4733A	DO-41 package; 7.5 V ±5%, r_dif = 15 Ω max; P_tot = 1 W; R_th(j-a) = 50 K/W with heatsink	Higher power rating but larger footprint and no hermetic seal - unsuitable for space-constrained or high-reliability use	Choose only if >500 mW dissipation is required and board area permits DO-41 mounting

Compared with BZX79-C7V5,113 and 1N4733A, NZX7V5D,133 uniquely combines hermetic stability, low thermal resistance in a compact axial form, and tight parametric consistency - making it optimal for mission-critical analog references where aging and environmental stress must be minimized.

Availability

NZX7V5D,133 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and medical sensor interfaces requiring stable component supply with guaranteed long-term parametric consistency and hermetic reliability.

Supply support for NZX7V5D,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 leadership in efficiency, miniaturization, and quality for industrial, automotive, and consumer markets.

The NZX series targets general-purpose Zener regulation in harsh environments, emphasizing hermetic stability, tight voltage tolerances, and extended temperature operation - specifically engineered for analog reference integrity in long-lifecycle systems.

FAQ

What is the maximum continuous forward current for NZX7V5D,133?

The absolute maximum forward current is 250 mA per the Absolute Maximum Ratings table. However, forward conduction is not its intended operating mode; sustained forward bias risks thermal runaway and permanent degradation. It is rated for reverse breakdown only.

Can NZX7V5D,133 be used in surface-mount assemblies?

No - the SOD27 (SC-40) package has axial leads designed exclusively for through-hole mounting. Its glass body and lead geometry are incompatible with reflow or wave soldering processes used for SMT. Use only in plated-through-hole PCBs with appropriate lead forming.

How does the temperature coefficient behave at 7.5 V nominal Zener voltage?

Per Figure 4 in the datasheet, NZX7V5D exhibits a positive temperature coefficient of approximately +2.5 mV/K at I_Z = 5 mA, meaning its Zener voltage increases linearly with junction temperature - a key factor in high-precision reference design requiring thermal compensation.

Is NZX7V5D,133 automotive qualified?

No - the datasheet explicitly states "Non-automotive qualified products" and confirms this part is not tested or warranted for automotive applications. It lacks AEC-Q200 qualification and is intended for industrial, consumer, and general-purpose use only.

NZX7V5D,133 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: NZX

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

Packaging:: Tape & Box (TB)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 7.7 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

NZX7V5D,133 FAQ

1.How can I place an order for NZX7V5D,133 through Aetrix?

Please submit a Request for Quotation (RFQ) for NZX7V5D,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 NZX7V5D,133 reliable?

The price and inventory of NZX7V5D,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX7V5D,133 is usually 5 days.

3.What payment methods are accepted for NZX7V5D,133?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX7V5D,133 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NZX7V5D,133?

NZX7V5D,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NZX7V5D,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 NZX7V5D,133?

For technical support, including NZX7V5D,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX7V5D,133 requirements.

6.How does Aetrix verify that NZX7V5D,133 is sourced from the original manufacturer or authorized distributors?

All NZX7V5D,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 NZX7V5D,133 meets industry standards.

7.What is the process for return or replacement of NZX7V5D,133?

All NZX7V5D,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX7V5D,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 NZX7V5D,133 part is unused and in its original packaging.

Return procedure for NZX7V5D,133:

1.Submit a request within 90 days.

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

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