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Nexperia USA Inc. BZX79-C2V7,133
- Part No.:
- BZX79-C2V7,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX79-C2V7,133.pdf
- Description:
- DIODE ZENER 2.7V 400MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:2,486
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Product details
Overview
BZX79-C2V7,133 from Nexperia is a ±5% tolerance Zener voltage regulator diode in a hermetically sealed SOD27 (DO-35) glass package, rated for 2.7 V nominal Zener voltage at 5 mA test current, 500 mW total power dissipation at 50 °C ambient, and 20 μA reverse leakage at 1 V reverse bias. It serves as a low-power voltage reference or stabilization element in linear power supplies, sensor biasing circuits, and overvoltage protection clamps.
For engineers reviewing the BZX79-C2V7,133 datasheet, BZX79-C2V7,133 pinout, BZX79-C2V7,133 application, or BZX79-C2V7,133 equivalent, key selection criteria include Zener voltage tolerance (±5%), differential resistance (300–600 Ω), temperature coefficient (−3.5 to −2.0 mV/K), junction-to-ambient thermal resistance (380 K/W), and non-repetitive peak reverse power capability (40 W).
Technical Context
This Zener diode operates in reverse breakdown mode with a specified Zener voltage of 2.65–2.75 V at IZ = 5 mA, exhibiting a negative temperature coefficient between −3.5 and −2.0 mV/K - typical for low-voltage Zeners below ~5 V. Its differential resistance ranges from 300 Ω (min) to 600 Ω (max), indicating moderate regulation stiffness under varying load currents.
The device uses axial-leaded, hermetically sealed glass packaging (SOD27/DO-35) with cathode marked by a band, enabling reliable operation up to 200 °C junction temperature and supporting non-repetitive surge handling up to 40 W for 100 μs pulses at Tj = 25 °C prior to surge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.65–2.75 V at IZ = 5 mA - defines stable reference point for low-voltage biasing |
| Power Dissipation (Ptot) | 500 mW at Tamb = 50 °C - sets maximum continuous DC power handling on standard PCB |
| Reverse Leakage (IR) | 20 μA at VR = 1 V - determines minimum quiescent current draw in standby reference circuits |
| Differential Resistance (rdif) | 300–600 Ω - quantifies voltage regulation sensitivity to current changes |
| Temperature Coefficient (SZ) | −3.5 to −2.0 mV/K - indicates predictable downward drift of VZ with rising temperature |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 μs - enables transient overvoltage clamping without failure |
| Junction-to-Ambient Rth | 380 K/W - defines thermal rise per watt under natural convection on unmetallized PCB |
Pinout & Package
Hermetically sealed axial-leaded glass package: SOD27 (JEDEC DO-35), cathode identified by a colored band. Leads are tinned copper-clad steel; body diameter 1.85 mm, length 4.25 mm, lead spacing 25.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection in reverse-biased configuration | Connected to lower potential node when used as shunt regulator; carries forward current up to 250 mA |
| Cathode | Zener breakdown terminal / high-side connection in reverse-biased configuration | Marked with band; connected to regulated voltage node; sustains reverse bias up to 2.75 V + margin |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables cost-effective voltage referencing where tight regulation is not critical, e.g., LED bias or signal clamping |
| 500 mW power rating at 50 °C | Supports continuous operation in compact consumer-grade PCB layouts without forced cooling |
| Hermetic glass SOD27 package | Ensures long-term stability and moisture resistance in industrial environments with thermal cycling |
| 40 W non-repetitive surge capability | Provides robust ESD and transient suppression in low-energy input stages without external TVS |
| Negative tempco (−3.5 to −2.0 mV/K) | Allows predictable compensation in temperature-sensitive analog references when paired with positive-coefficient components |
Applications
| Low-Voltage Sensor Biasing | Linear Regulator Reference |
|---|---|
Use Scenario: Providing stable 2.7 V bias to analog sensor ICs (e.g., temperature or pressure transducers) in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise excitation voltage for ratiometric sensor outputs. Use Value: Maintains sensor accuracy within ±1% full-scale error across −40 to +85 °C due to known tempco and low leakage. | Use Scenario: Acting as the feedback reference in discrete adjustable linear regulators (e.g., LM317-based circuits) targeting 3.3 V output. IC Role / Device Role / Timing Role: Precision voltage reference setting output via resistor divider ratio. Use Value: Enables accurate output calibration without trimming, leveraging ±5% VZ tolerance and stable rdif under load variation. |
| Overvoltage Clamp for MCU I/O | Signal Level Translation |
Use Scenario: Protecting 3.3 V microcontroller GPIO pins against accidental 5 V misconnection or ESD events. IC Role / Device Role / Timing Role: Passive shunt clamp limiting pin voltage to ≤2.75 V during fault conditions. Use Value: Prevents latch-up and oxide damage with 40 W surge rating and sub-μs response, eliminating need for dedicated TVS. | Use Scenario: Translating 5 V logic signals down to 2.7 V compatible levels for interfacing with low-voltage ADC inputs or comparators. IC Role / Device Role / Timing Role: Passive level-shifter using forward conduction (0.9 V VF) and Zener clamping behavior. Use Value: Achieves clean signal thresholding with minimal component count and no active power supply required. |
Availability
BZX79-C2V7,133 is available at Aetrix Electronics and suitable for low-power voltage reference, sensor biasing, and overvoltage protection applications requiring stable component supply across automotive infotainment modules, industrial sensor nodes, and consumer wearables.
Supply support for BZX79-C2V7,133 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 leader in high-volume discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products division, with manufacturing and R&D centers across Asia, Europe, and the Americas.
The BZX79 series belongs to Nexperia's legacy Zener diode portfolio designed specifically for cost-sensitive, space-constrained applications demanding reliable low-voltage regulation and transient suppression in consumer, computing, and industrial electronics.
FAQ
What is the maximum continuous forward current for BZX79-C2V7,133?
The absolute maximum continuous forward current is 250 mA at Tamb = 50 °C, as defined in the Limiting Values table. This rating assumes standard PCB mounting without metallization pad and lead length ≤8 mm. Exceeding this value risks thermal runaway or bond-wire failure.
How does the temperature coefficient affect regulation accuracy over temperature?
With a typical temperature coefficient of −2.5 mV/K, the Zener voltage decreases by approximately 2.5 mV per Kelvin rise in junction temperature. Over a 100 K range (−40 to +60 °C), this yields ~250 mV drift - a key design factor when using BZX79-C2V7,133 in precision references without compensation.
Can BZX79-C2V7,133 be used as a replacement for BZX79-B2V7?
No - BZX79-B2V7 has ±2% tolerance (2.65–2.75 V) and tighter differential resistance (275–600 Ω), while BZX79-C2V7 has ±5% tolerance (2.5–2.9 V) and higher rdif (300–600 Ω). Substitution may degrade regulation accuracy and thermal stability in precision applications.
What is the cathode marking convention on the SOD27 package?
The cathode is marked by a single color band (typically black or dark gray) located near one end of the glass body. When oriented with the band to the left, the left lead is cathode and the right lead is anode - consistent with JEDEC DO-35 and IEC SOD27 standards.
BZX79-C2V7,133 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.7 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 20 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ALF2
BZX79-C2V7,133 FAQ
1.How can I place an order for BZX79-C2V7,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX79-C2V7,133 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 BZX79-C2V7,133 reliable?
The price and inventory of BZX79-C2V7,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX79-C2V7,133 is usually 5 days.
3.What payment methods are accepted for BZX79-C2V7,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX79-C2V7,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX79-C2V7,133?
BZX79-C2V7,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX79-C2V7,133 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 BZX79-C2V7,133?
For technical support, including BZX79-C2V7,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX79-C2V7,133 requirements.
6.How does Aetrix verify that BZX79-C2V7,133 is sourced from the original manufacturer or authorized distributors?
All BZX79-C2V7,133 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 BZX79-C2V7,133 meets industry standards.
7.What is the process for return or replacement of BZX79-C2V7,133?
All BZX79-C2V7,133 units undergo pre-shipment inspection (PSI). If there is an issue with BZX79-C2V7,133, 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 BZX79-C2V7,133 part is unused and in its original packaging.
Return procedure for BZX79-C2V7,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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