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Nexperia USA Inc. NZX27A,133
- Part No.:
- NZX27A,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
NZX27A,133.pdf
- Description:
- DIODE ZENER 25.9V 500MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:5,385
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Product details
Overview
NZX27A,133 from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) glass package, designed for precision voltage regulation at 27 V nominal Zener voltage with ±5% tolerance (25.2–26.6 V min/max), 80 Ω differential resistance at IZ = 2 mA, and ≤0.05 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 NZX27A,133 datasheet, NZX27A,133 pinout, NZX27A,133 application, or NZX27A,133 equivalent, this component supports design validation of 27 V regulation accuracy, thermal stability under ambient extremes (−65 °C to +175 °C), and reliability in axial-leaded PCB layouts where hermetic sealing prevents moisture-induced parameter drift.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified test current of 2 mA per IEC 60134 limiting values, enabling predictable clamping behavior in shunt regulator topologies. Its low differential resistance (80 Ω) ensures minimal output voltage variation across load current shifts, while the 380 K/W junction-to-ambient thermal resistance reflects its free-air dissipation capability.
The device uses an axial-leaded SOD27 package with cathode marked by a band, requiring correct orientation during soldering to maintain intended polarity-dependent regulation. Its 500 mW total power dissipation limit and 175 °C maximum junction temperature define safe operating boundaries for continuous DC or pulsed operation (tp ≤ 300 µs, duty cycle ≤ 2%).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25.2–26.6 V at IZ = 2 mA - defines precise clamping threshold for 27 V nominal regulation |
| Differential Resistance (rdif) | 80 Ω max at IZ = 2 mA - ensures <160 mV output shift per 2 mA load change |
| Reverse Leakage Current (IR) | ≤0.05 µA at VR = 18.9 V - guarantees negligible standby power loss in high-impedance bias networks |
| Total Power Dissipation (Ptot) | 500 mW at Ttp ≤ 25 °C - sets maximum continuous DC power handling before thermal derating |
| Junction Temperature Range (Tj) | −65 °C to +175 °C - enables operation in extended industrial and under-hood environments |
| Thermal Resistance (Rth(j-a)) | 380 K/W in free air - determines temperature rise of 190 °C at full 500 mW dissipation |
Pinout & Package
Hermetically sealed axial-leaded SOD27 (SC-40) glass package with 25.4 mm minimum lead length and 4.25 mm maximum body diameter; cathode identified by a colored band on the glass envelope.
| 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 sealing | Prevents humidity ingress and long-term parameter drift in harsh environments |
| Low differential resistance | 80 Ω max ensures tight voltage regulation under varying load conditions |
| Low leakage current | ≤0.05 µA minimizes quiescent power draw in battery-powered reference circuits |
| Wide operating temperature range | −65 °C to +175 °C supports deployment in industrial control and automotive under-hood applications |
Applications
| Power Supply Feedback Loop | Overvoltage Protection Stage |
|---|---|
|
Use Scenario: Stabilizing output voltage in linear regulators or switching converter feedback paths. IC Role / Device Role / Timing Role: Zener diode provides precise 27 V reference voltage to error amplifier input. Use Value: Enables ±1% output regulation accuracy despite input ripple and load transients due to low rdif and stable VZ. |
Use Scenario: Clamping transient surges on 24 V DC bus lines in industrial PLC modules. IC Role / Device Role / Timing Role: Shunt element that conducts excess energy above 27 V to ground during ESD or inductive kick events. Use Value: Limits peak voltage to 26.6 V (max VZ) with <100 ns response, protecting downstream MOSFET gates and op-amps. |
| Reference Voltage Source | Signal Level Translation |
|
Use Scenario: Generating stable 27 V bias for high-voltage op-amp inputs in sensor signal conditioning. IC Role / Device Role / Timing Role: Passive voltage reference establishing fixed DC offset for differential amplification. Use Value: Delivers <0.5 mV/°C temperature coefficient stability over −40 °C to +85 °C, reducing calibration drift. |
Use Scenario: Translating 3.3 V logic signals to interface with 24 V fieldbus receivers. IC Role / Device Role / Timing Role: Clamp diode defining upper rail of level-shifting network with series resistor. Use Value: Maintains clean 27 V ceiling without overshoot during fast edge transitions, preventing receiver latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55-C27 | Same 27 V nominal, but plastic DO-35 package; 100 Ω rdif, 1 µA IR at VR | Limited to −65 °C to +150 °C; higher leakage reduces battery-life suitability | Choose for cost-sensitive consumer designs where hermeticity is not required |
| 1N5254B | 27 V nominal, DO-35 package; 300 mW Ptot, 100 Ω rdif, 10 µA IR | Lower power rating restricts use in sustained 20 mA regulation; higher leakage degrades precision | Acceptable only in low-current (<5 mA), non-critical reference roles with relaxed stability needs |
Compared with BZX55-C27 and 1N5254B, NZX27A,133 offers superior thermal robustness (175 °C Tj), lower leakage (0.05 µA vs ≥1 µA), and tighter regulation (80 Ω vs ≥100 Ω rdif), making it optimal for industrial-grade 27 V references demanding long-term stability.
Availability
NZX27A,133 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and test equipment requiring stable component supply with guaranteed traceability and lifecycle continuity.
Supply support for NZX27A,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 solutions with focus on efficiency, miniaturization, and robustness.
The NZX series targets general-purpose Zener regulation with hermetic reliability, optimized for applications needing stable voltage references across wide temperature ranges and harsh environmental conditions.
FAQ
What is the maximum continuous forward current for NZX27A,133?
The absolute maximum forward current is 250 mA per IEC 60134 limiting values. However, the device is intended for reverse-bias Zener operation; forward conduction is limited to brief surge events, and sustained forward current above 10 mA risks thermal overload due to 1.5 V forward voltage drop at 200 mA.
How does the SOD27 package affect thermal performance compared to DO-35?
The SOD27's hermetic glass construction yields higher junction-to-ambient thermal resistance (380 K/W) than typical DO-35 plastic packages (~300 K/W), but improves long-term parameter stability by eliminating moisture-induced degradation. Its axial leads allow direct mounting to heatsinks via lead bending, partially offsetting the higher Rth.
Can NZX27A,133 be used in parallel for higher power dissipation?
No-Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, causing current hogging when paralleled. Even within the same batch, VZ tolerance (±5%) and rdif mismatch will result in uneven current sharing, risking thermal runaway. Use a single higher-rated device or active regulation instead.
What is the significance of the '133' suffix in NZX27A,133?
The '133' denotes the packing method: 52 mm tape ammopack, axial orientation, per Nexperia's ordering code system. It does not affect electrical characteristics but specifies reel size, tape width, and component orientation for automated placement equipment compatibility.
NZX27A,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):
- 25.9 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 18.9 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
NZX27A,133 FAQ
1.How can I place an order for NZX27A,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for NZX27A,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 NZX27A,133 reliable?
The price and inventory of NZX27A,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX27A,133 is usually 5 days.
3.What payment methods are accepted for NZX27A,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX27A,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZX27A,133?
NZX27A,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZX27A,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 NZX27A,133?
For technical support, including NZX27A,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX27A,133 requirements.
6.How does Aetrix verify that NZX27A,133 is sourced from the original manufacturer or authorized distributors?
All NZX27A,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 NZX27A,133 meets industry standards.
7.What is the process for return or replacement of NZX27A,133?
All NZX27A,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX27A,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 NZX27A,133 part is unused and in its original packaging.
Return procedure for NZX27A,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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