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onsemi BZX55C7V5_T50A
- Part No.:
- BZX55C7V5_T50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX55C7V5_T50A.pdf
- Description:
- DIODE ZENER 7.5V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:9,152
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Product details
Overview
BZX55C7V5_T50A from Fairchild Semiconductor is a 7.5 V, ±5% tolerance Zener diode in DO-35 glass package, rated for 500 mW power dissipation at 75°C with 7 Ω dynamic impedance at 5 mA test current and 0.1 μA maximum reverse leakage at 5 V. It provides precise voltage regulation in low-power reference and protection circuits.
For engineers reviewing the BZX55C7V5_T50A datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage accuracy, thermal derating behavior, cathode-band polarity marking, and DO-35 lead-form compatibility with through-hole PCB layouts.
Technical Context
The BZX55C7V5_T50A operates as a silicon planar Zener diode optimized for stable voltage reference and overvoltage clamping in DC bias networks. Its 7.5 V nominal breakdown voltage is specified at 5 mA test current with 7 Ω dynamic impedance (ZZ), ensuring predictable regulation under small-signal load variations.
It features a -65°C to +200°C operating temperature range and 4.0 mW/°C linear derating above 75°C ambient, enabling reliable use in industrial and automotive environments where thermal cycling occurs. Reverse leakage remains ≤0.1 μA at 5 V, supporting low-quiescent-current designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.0 V min / 7.9 V max at 5 mA - defines usable regulation window for precision biasing |
| Tolerance | ±5% - enables consistent performance across production lots without binning |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75°C - sets maximum continuous power in standard lead-length mounting |
| Dynamic Impedance (ZZ) | 7 Ω @ IZ = 5 mA - determines output voltage stability under varying load current |
| Reverse Leakage (IR) | ≤0.1 μA @ VR = 5 V - ensures minimal error current in high-impedance reference nodes |
| Max Zener Current (IZM) | 53 mA - derived from PD and VZ, limits safe DC clamp current |
| Operating Temp Range | -65°C to +200°C - supports deployment in extreme ambient conditions without parameter shift |
Pinout & Package
DO-35 glass axial package with cathode indicated by color band; two-terminal device with no internal connections beyond anode and cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node during forward bias; used for polarity verification |
| Cathode | Zener breakdown terminal | Marked with color band; connected to higher-potential node during regulation/clamp operation |
Key Features
| Feature | Design Value |
|---|---|
| Stable Zener voltage at 5 mA | Ensures repeatable reference point without external current-setting complexity |
| Low dynamic impedance (7 Ω) | Minimizes output voltage deviation when load current varies within design envelope |
| Hermetically sealed DO-35 glass case | Provides long-term reliability and moisture resistance in unsealed enclosures |
| Wide temperature operating range | Eliminates need for thermal compensation circuitry in industrial-grade applications |
| 5% voltage tolerance grade | Reduces inventory SKUs while maintaining sufficient accuracy for non-critical references |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 7.5 V reference for linear regulator feedback or ADC reference divider networks. IC Role / Device Role / Timing Role: Voltage reference element establishing precise DC bias point. Use Value: Delivers ±5% accuracy and <7 Ω impedance to minimize reference drift under load variation. | Use Scenario: Protecting microcontroller I/O pins from transient voltage spikes exceeding 7.5 V. IC Role / Device Role / Timing Role: Shunt clamping device diverting excess energy to ground. Use Value: Activates at 7.0–7.9 V with fast response and 0.1 μA leakage below clamp threshold. |
| Sensor Bias Network | Signal Level Translation |
Use Scenario: Biasing resistive sensor bridges requiring stable excitation voltage in analog front-ends. IC Role / Device Role / Timing Role: Precision DC voltage source for bridge excitation. Use Value: Maintains regulation across -65°C to +200°C, critical for automotive and industrial sensors. | Use Scenario: Translating 12 V logic signals down to 7.5 V compatible levels for mixed-voltage interface ICs. IC Role / Device Role / Timing Role: Passive level-shifting element using Zener breakdown. Use Value: Enables simple, low-cost translation without active components or power supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A | Same 5% tolerance and 7.5 V nominal rating, but 1 W power rating in DO-41 package | Higher power handling requires larger PCB footprint and different thermal layout | Select when >500 mW dissipation is needed; not drop-in due to package and derating differences |
| BZX55C7V5 (no suffix) | Identical electrical specs and DO-35 package; T50A denotes tape-and-reel packaging variant | No functional difference - same regulation performance and thermal behavior | Choose BZX55C7V5_T50A for automated SMT placement; standard BZX55C7V5 for manual or bulk assembly |
Compared with 1N4733A and BZX55C7V5, the BZX55C7V5_T50A offers identical Zener characteristics in a compact DO-35 form factor with tape-and-reel delivery optimized for pick-and-place manufacturing, while avoiding unnecessary power overhead or package conversion.
Availability
BZX55C7V5_T50A is available at Aetrix Electronics and suitable for power supply reference, overvoltage clamp, and sensor bias applications requiring stable component supply and long-lifecycle availability.
Supply support for BZX55C7V5_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, signal conditioning, and discrete components before its acquisition by ON Semiconductor in 2016.
The BZX55C7V5_T50A belongs to the BZX55C series of general-purpose Zener diodes designed for cost-effective, reliable voltage regulation and transient suppression in consumer, industrial, and automotive electronics.
FAQ
What is the Zener voltage tolerance of BZX55C7V5_T50A?
The BZX55C7V5_T50A has a ±5% tolerance on its nominal 7.5 V Zener voltage, meaning the actual breakdown voltage falls between 7.0 V and 7.9 V when measured at 5 mA test current and 25°C. This tolerance is guaranteed per the Fairchild datasheet Rev. D1 and applies to all units shipped under this part number. The BZX55C7V5_T50A maintains this specification across its full operating temperature range.
What package type does BZX55C7V5_T50A use?
The BZX55C7V5_T50A uses the DO-35 glass axial package with a cathode identification band. This package is standardized for through-hole mounting and features a hermetically sealed glass body that ensures long-term stability and moisture resistance. The "_T50A" suffix indicates tape-and-reel packaging for automated assembly, but the die and package dimensions remain identical to the bulk BZX55C7V5 variant.
What is the maximum power dissipation for BZX55C7V5_T50A?
The BZX55C7V5_T50A is rated for 500 mW maximum power dissipation at a lead temperature of 75°C with 3/8" lead length. Above 75°C, it derates linearly at 4.0 mW/°C. This rating defines the upper limit of continuous DC power the BZX55C7V5_T50A can safely handle without exceeding junction temperature limits. Exceeding this value risks parametric shift or permanent failure.
How does BZX55C7V5_T50A compare to BZX55C7V5 without the "_T50A" suffix?
The BZX55C7V5_T50A and BZX55C7V5 share identical electrical specifications, thermal ratings, and DO-35 package dimensions. The "_T50A" suffix solely denotes tape-and-reel packaging format for surface-mount equipment compatibility. There is no difference in Zener voltage, impedance, leakage, or reliability between the two. The BZX55C7V5_T50A is functionally interchangeable with BZX55C7V5 in all circuit applications.
What is the reverse leakage current specification for BZX55C7V5_T50A?
The BZX55C7V5_T50A specifies a maximum reverse leakage current (IR) of 0.1 μA at 5 V reverse voltage and 25°C. This low leakage ensures minimal error current in high-impedance reference circuits and supports accurate voltage sensing in battery-powered or low-power systems. The value remains valid across the full -65°C to +200°C operating temperature range as confirmed in the Fairchild BZX55C2V4–BZX55C56 datasheet.
BZX55C7V5_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):
- 7.5 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 5 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
BZX55C7V5_T50A FAQ
1.How can I place an order for BZX55C7V5_T50A through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX55C7V5_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 BZX55C7V5_T50A reliable?
The price and inventory of BZX55C7V5_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX55C7V5_T50A is usually 5 days.
3.What payment methods are accepted for BZX55C7V5_T50A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX55C7V5_T50A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX55C7V5_T50A?
BZX55C7V5_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX55C7V5_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 BZX55C7V5_T50A?
For technical support, including BZX55C7V5_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX55C7V5_T50A requirements.
6.How does Aetrix verify that BZX55C7V5_T50A is sourced from the original manufacturer or authorized distributors?
All BZX55C7V5_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 BZX55C7V5_T50A meets industry standards.
7.What is the process for return or replacement of BZX55C7V5_T50A?
All BZX55C7V5_T50A units undergo pre-shipment inspection (PSI). If there is an issue with BZX55C7V5_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 BZX55C7V5_T50A part is unused and in its original packaging.
Return procedure for BZX55C7V5_T50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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