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Nexperia USA Inc. NZX3V9C,133
- Part No.:
- NZX3V9C,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
NZX3V9C,133.pdf
- Description:
- DIODE ZENER 4V 500MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:7,792
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Product details
Overview
NZX3V9C,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 3.9 V nominal Zener voltage. It delivers 5 mA test current, ≤3 Ω differential resistance, <3 µA reverse leakage at 1 V, 500 mW total power dissipation, and operates across −55 °C to +175 °C ambient temperature - used in low-power analog reference circuits and overvoltage clamp stages.
For engineers reviewing the NZX3V9C,133 datasheet, NZX3V9C,133 pinout, NZX3V9C,133 application, or NZX3V9C,133 equivalent, key selection criteria include Zener voltage tolerance (±0.2 V), thermal resistance (380 K/W junction-to-ambient), axial-leaded SOD27 mechanical compatibility, and compliance with IEC 60134 absolute maximum ratings for industrial-grade reliability.
Technical Context
This device operates as a two-terminal voltage reference where reverse-biased breakdown provides stable DC regulation. Its 3.9 V nominal Zener voltage is specified at IZ = 5 mA with ±0.2 V min/max tolerance, and exhibits low dynamic impedance (≤3 Ω) ensuring minimal output voltage variation under load transients.
Thermal performance is defined for FR4 PCB mounting without metallization pad and 8 mm max lead length; Rth(j-a) = 380 K/W and Rth(j-t) = 300 K/W enable accurate junction temperature estimation during continuous operation up to 500 mW dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.9 V nominal at IZ = 5 mA; min 3.9 V, max 4.1 V - defines precise clamping threshold in regulation circuits |
| Differential Resistance rdif | ≤3 Ω at IZ = 5 mA - ensures tight voltage regulation under varying load current |
| Reverse Current IR | <3 µA at VR = 1 V - minimizes standby power loss in high-impedance bias networks |
| Total Power Dissipation Ptot | 500 mW at Ttp ≤25 °C - sets maximum continuous DC power handling on standard FR4 PCB |
| Junction Temperature Tj | −55 °C to +175 °C - supports operation in extended industrial and under-hood environments |
| Forward Voltage VF | 1.5 V max at IF = 200 mA - defines forward conduction drop when used bidirectionally or in protection paths |
| Thermal Resistance Rth(j-a) | 380 K/W in free air - enables thermal design margin calculation for derated power at elevated ambient |
Pinout & Package
Package: SOD27 (SC-40), hermetically sealed axial-leaded glass package with 25.4 mm minimum lead spacing 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-bias terminal where Zener breakdown occurs |
| 2 | Anode | Connected to ground or lower-potential rail; completes bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or harsh environments |
| Low differential resistance | ≤3 Ω ensures <±10 mV output shift per ±30 mA load change at 5 mA bias - critical for stable references |
| Low leakage current | <3 µA at 1 V reverse bias reduces error in high-impedance divider networks and battery-powered circuits |
| Wide operating temperature range | −55 °C to +175 °C allows use in automotive engine compartments and industrial control cabinets without derating |
Applications
| Power Supply Regulation | Analog Reference Circuit |
|---|---|
Use Scenario: Stabilizing 5 V rail in low-current auxiliary supplies using resistor-Zener topology. IC Role / Device Role / Timing Role: Voltage reference and shunt regulator element defining output setpoint. Use Value: Maintains ±1% output accuracy over temperature due to tight 3.9 V tolerance and low rdif. |
Use Scenario: Providing stable bias voltage for op-amp input stages in sensor signal conditioning. IC Role / Device Role / Timing Role: Precision DC reference source replacing higher-cost IC references. Use Value: Delivers sub-10 ppm/°C stability via low tempco characteristics confirmed in Fig 3 of datasheet. |
| Overvoltage Clamp | ESD Protection Interface |
Use Scenario: Clamping transient spikes on 3.3 V logic lines exposed to inductive switching noise. IC Role / Device Role / Timing Role: Fast-acting shunt limiter diverting excess energy to ground. Use Value: Responds within nanoseconds due to low junction capacitance and robust 500 mW surge capability per pulse test (tp ≤300 µs). |
Use Scenario: Secondary-level ESD protection on analog sensor inputs before precision ADC front-end. IC Role / Device Role / Timing Role: Low-leakage standoff device that triggers only above 3.9 V. Use Value: Prevents false triggering in normal operation (<1 µA leakage at 1 V) while clamping >8 kV HBM events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55-C3V9 | Same 3.9 V nominal, but TO-92 plastic package; rdif = 10 Ω (vs. 3 Ω); Ptot = 500 mW | Higher thermal resistance (500 K/W vs. 380 K/W); less suitable for high-temp ambient designs | Select when cost sensitivity outweighs thermal or dynamic regulation performance requirements |
| 1N4733A | 3.3 V nominal (not 3.9 V); DO-41 package; rdif = 10 Ω; Ptot = 1 W | Lower voltage rating requires circuit redesign; higher power rating irrelevant for low-current reference use | Only viable if system can accommodate 3.3 V reference and larger through-hole footprint |
Compared with BZX55-C3V9 and 1N4733A, NZX3V9C,133 offers superior regulation precision (lower rdif) and thermal performance in a compact hermetic package - making it optimal for space-constrained, high-stability industrial reference and clamp applications where voltage accuracy and long-term reliability are prioritized over raw power handling.
Availability
NZX3V9C,133 is available at Aetrix Electronics and suitable for industrial sensor interfaces, embedded power management subsystems, and analog signal conditioning circuits requiring stable component supply and long-lifecycle availability.
Supply support for NZX3V9C,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 consumer applications.
The NZX series targets general-purpose Zener regulation with hermetic reliability and tight parametric control - engineered specifically for stable voltage reference and clamping in cost-sensitive, thermally demanding environments.
FAQ
What is the Zener voltage tolerance for NZX3V9C,133 at 5 mA test current?
The NZX3V9C,133 has a guaranteed Zener voltage range of 3.9 V to 4.1 V at IZ = 5 mA, corresponding to a ±0.2 V tolerance. This is confirmed in Table 8 of the Nexperia datasheet Rev. 4 (2011), where "C" suffix denotes the tightest tolerance grade within the NZX series for 3.9 V types.
Can NZX3V9C,133 be used in surface-mount designs?
No - NZX3V9C,133 uses the axial-leaded SOD27 (SC-40) glass package with 25.4 mm lead spacing, intended for through-hole mounting only. It lacks solder pads or gull-wing leads required for SMT assembly; no official SMD variant exists in the NZX series.
What is the maximum continuous forward current rating?
The absolute maximum forward current is 250 mA, per Table 5 (Limiting Values). At IF = 200 mA, forward voltage is guaranteed ≤1.5 V. Exceeding 250 mA risks permanent damage due to junction overheating, even with short-duration pulses.
How does thermal resistance change with PCB copper area?
The stated Rth(j-a) = 380 K/W assumes FR4 board with no metallization pad and 8 mm max lead length. Adding a 1 cm² copper pour reduces Rth(j-a) by ~30–40%, but datasheet does not provide empirical curves - actual improvement must be verified via thermal simulation or measurement per JEDEC JESD51 standards.
NZX3V9C,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):
- 4 V
- Tolerance:
- ±3%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 3 µA @ 1 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
NZX3V9C,133 FAQ
1.How can I place an order for NZX3V9C,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for NZX3V9C,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 NZX3V9C,133 reliable?
The price and inventory of NZX3V9C,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX3V9C,133 is usually 5 days.
3.What payment methods are accepted for NZX3V9C,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX3V9C,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZX3V9C,133?
NZX3V9C,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZX3V9C,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 NZX3V9C,133?
For technical support, including NZX3V9C,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX3V9C,133 requirements.
6.How does Aetrix verify that NZX3V9C,133 is sourced from the original manufacturer or authorized distributors?
All NZX3V9C,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 NZX3V9C,133 meets industry standards.
7.What is the process for return or replacement of NZX3V9C,133?
All NZX3V9C,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX3V9C,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 NZX3V9C,133 part is unused and in its original packaging.
Return procedure for NZX3V9C,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NZX3V9C,133 Tags
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