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onsemi BZX55C5V6_T50A
- Part No.:
- BZX55C5V6_T50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX55C5V6_T50A.pdf
- Description:
- DIODE ZENER 5.6V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:3,757
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Product details
Overview
BZX55C5V6_T50A from Fairchild Semiconductor is a 5.6 V, ±5% tolerance Zener diode in DO-35 glass package, rated for 500 mW power dissipation at TL ≤ 75°C with 25 Ω dynamic impedance at 5 mA test current and 0.1 μA maximum reverse leakage at 4.2 V. It provides precise voltage regulation in low-power reference and protection circuits.
For engineers reviewing the BZX55C5V6_T50A datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage accuracy, thermal derating behavior, cathode-band polarity marking, DO-35 mechanical compatibility, and compliance with industrial temperature range (–65°C to +200°C).
Technical Context
The BZX55C5V6_T50A operates as a two-terminal voltage reference device, maintaining stable 5.6 V across its terminals under reverse-biased conditions when current exceeds the knee threshold. Its 25 Ω zener impedance ensures minimal voltage variation over operating current changes from 1 mA to 20 mA.
Designed for through-hole mounting in DO-35 glass packages, it features a color band denoting cathode polarity and conforms to JEDEC DO-35 mechanical standards. Thermal performance follows a linear 4.0 mW/°C derating above 75°C ambient lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.2 V min / 6.0 V max at 5 mA - defines usable regulation window for 5.6 V nominal reference |
| Tolerance | ±5% - enables predictable voltage margining in feedback networks and clamp thresholds |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75°C - sets maximum continuous power handling before thermal derating begins |
| Zener Impedance (ZZ) | 25 Ω @ IZ = 5 mA - determines output voltage stability under load current transients |
| Reverse Leakage (IR) | 0.1 μA @ VR = 4.2 V - ensures minimal quiescent current in high-impedance bias or sensing paths |
| Operating Temp Range | –65°C to +200°C - supports deployment in automotive engine compartments and industrial control enclosures |
| Forward Voltage (VF) | 1.3 V max @ IF = 100 mA - confirms standard silicon PN junction conduction for forward-bias use cases |
Pinout & Package
DO-35 glass axial package with cathode indicated by a single color band on the body; no active pin numbering required as a two-terminal passive device.
Key Features
| Feature | Design Value |
|---|---|
| ±5% VZ tolerance | Enables direct substitution in legacy 5.6 V reference designs without recalibration |
| DO-35 glass construction | Provides hermetic sealing and long-term parameter stability under humidity exposure |
| 500 mW power rating | Supports operation in unregulated supply rails up to ~100 mA without external heat sinking |
| Cathode band marking | Ensures unambiguous polarity identification during manual assembly and visual inspection |
Applications
| Voltage Reference for Op-Amp Circuits | Overvoltage Clamp in Sensor Interfaces |
|---|---|
Use Scenario: Providing stable 5.6 V bias to op-amp non-inverting inputs in precision analog signal conditioning stages. IC Role / Device Role / Timing Role: Two-terminal shunt reference establishing fixed DC potential independent of supply ripple. Use Value: Maintains <±10 mV drift over –40°C to +85°C due to low tempco and 25 Ω ZZ, preserving amplifier common-mode rejection. | Use Scenario: Protecting 5 V microcontroller ADC inputs from transient surges exceeding 6 V during ESD events. IC Role / Device Role / Timing Role: Passive clamping element diverting excess energy to ground when input exceeds 5.6 V. Use Value: Limits peak voltage to ≤6.0 V with <0.1 μA leakage below 4.2 V, avoiding signal path loading during normal operation. |
| Power Supply Feedback Divider | Low-Cost Microcontroller Reset Circuit |
Use Scenario: Setting regulated output voltage in adjustable DC-DC converter feedback loops using resistor dividers. IC Role / Device Role / Timing Role: Precision voltage node defining error amplifier reference point in closed-loop regulation. Use Value: Enables ±1% output accuracy with 5.2–6.0 V VZ window and stable ZZ across load steps. | Use Scenario: Generating clean reset pulses for 5 V MCUs by holding reset line low until supply reaches 5.6 V during power-up. IC Role / Device Role / Timing Role: Threshold-detecting element triggering RC-based reset timing via voltage threshold crossing. Use Value: Delivers deterministic 5.6 V turn-on with <100 ns response to rising VCC, eliminating brown-out glitches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A | Same 5.6 V nominal, ±5% tolerance, but rated 1 W in DO-41 package with 5 Ω ZZ | Higher power handling and lower impedance suit higher-current regulation; larger DO-41 footprint requires PCB rework | Select when >500 mW dissipation or <10 Ω ZZ is required; not drop-in compatible due to package size |
| MMSZ5232B | 5.6 V, ±5%, SOD-123 surface-mount package, 500 mW rating, 17 Ω ZZ at 20 mA | Enables automated assembly and space-constrained layouts; lower ZZ improves regulation at higher currents | Choose for modern PCBs requiring SMT placement; verify thermal pad layout matches 500 mW derating curve |
Compared with 1N4734A and MMSZ5232B, the BZX55C5V6_T50A offers proven DO-35 reliability in legacy through-hole systems, balanced impedance and leakage for mid-range current references, and direct compatibility with existing axial-component footprints without layout change.
Availability
BZX55C5V6_T50A is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, power supply feedback, and MCU reset circuitry requiring stable component supply across industrial, automotive, and consumer electronics programs.
Supply support for BZX55C5V6_T50A 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
Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016.
The BZX55 series belongs to Fairchild's general-purpose Zener diode product line, engineered for cost-sensitive, high-reliability voltage regulation and clamping in industrial and automotive environments.
FAQ
What is the exact zener voltage range for BZX55C5V6_T50A at 25°C?
The BZX55C5V6_T50A has a specified zener voltage range of 5.2 V minimum to 6.0 V maximum when measured at 5 mA test current and 25°C ambient temperature. This ±5% tolerance band is guaranteed per the Fairchild BZX55C2V4–BZX55C56 datasheet Rev. D1, and applies directly to the BZX55C5V6_T50A variant.
Does BZX55C5V6_T50A have a defined cathode marking, and how is it identified?
Yes, the BZX55C5V6_T50A uses a single color band on the glass body to denote the cathode terminal, consistent with JEDEC DO-35 packaging standards. This marking is visible along the axial length of the device and must be oriented toward the more positive potential in reverse-bias applications. The BZX55C5V6_T50A datasheet explicitly states "COLOR BAND DENOTES CATHODE" on page 2.
What is the maximum reverse leakage current for BZX55C5V6_T50A, and at what voltage is it specified?
The BZX55C5V6_T50A exhibits a maximum reverse leakage current of 0.1 μA when biased at 4.2 V (i.e., 75% of nominal VZ). This value is confirmed in the Electrical Characteristics table on page 2 of the Fairchild datasheet and reflects worst-case leakage under sub-threshold reverse bias conditions.
Can BZX55C5V6_T50A be used in surface-mount designs?
No, the BZX55C5V6_T50A is manufactured exclusively in the through-hole DO-35 glass axial package and is not suitable for surface-mount assembly. For SMT equivalents, consider the MMSZ5232B (SOD-123) or BZX84-C5V6 (SOT-23), which share the same 5.6 V rating but differ in package, thermal profile, and soldering requirements.
How does the power derating of BZX55C5V6_T50A work above 75°C?
The BZX55C5V6_T50A derates linearly at 4.0 mW/°C for lead temperatures above 75°C, as specified in the Absolute Maximum Ratings table. For example, at 100°C lead temperature, allowable power drops to 500 mW − (25°C × 4.0 mW/°C) = 400 mW. This derating is based on measured lead temperature (TL), not ambient air temperature.
BZX55C5V6_T50A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±7%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 100 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
BZX55C5V6_T50A FAQ
1.How can I place an order for BZX55C5V6_T50A through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX55C5V6_T50A 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 BZX55C5V6_T50A reliable?
The price and inventory of BZX55C5V6_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX55C5V6_T50A is usually 5 days.
3.What payment methods are accepted for BZX55C5V6_T50A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX55C5V6_T50A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX55C5V6_T50A?
BZX55C5V6_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX55C5V6_T50A 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 BZX55C5V6_T50A?
For technical support, including BZX55C5V6_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX55C5V6_T50A requirements.
6.How does Aetrix verify that BZX55C5V6_T50A is sourced from the original manufacturer or authorized distributors?
All BZX55C5V6_T50A 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 BZX55C5V6_T50A meets industry standards.
7.What is the process for return or replacement of BZX55C5V6_T50A?
All BZX55C5V6_T50A units undergo pre-shipment inspection (PSI). If there is an issue with BZX55C5V6_T50A, 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 BZX55C5V6_T50A part is unused and in its original packaging.
Return procedure for BZX55C5V6_T50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX55C5V6_T50A Tags
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