My Inquiry
My Account
onsemi BZX55C8V2_T50A
- Part No.:
- BZX55C8V2_T50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
BZX55C8V2_T50A.pdf
- Description:
- DIODE ZENER 8.2V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:3,820
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZX55C8V2_T50A from Fairchild Semiconductor is a 5% tolerance, 8.2 V 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 reverse leakage at 6.2 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog regulators and signal conditioning circuits.
For engineers reviewing the BZX55C8V2_T50A datasheet, pinout, applications, or equivalent options, key selection criteria include zener voltage tolerance, thermal derating behavior, dynamic impedance at nominal test current, reverse leakage at specified VR, and DO-35 mechanical compatibility with through-hole PCB layouts.
Technical Context
This device operates as a silicon planar passivated Zener diode optimized for stable voltage regulation in low-current (<20 mA) DC bias applications. Its 8.2 V nominal breakdown voltage is specified at 5 mA test current with ±5% tolerance and exhibits 7 Ω dynamic impedance (ZZ), enabling predictable clamping performance under small-signal variations.
The DO-35 glass package provides hermetic sealing and supports operation across –65°C to +200°C junction temperature range. Power dissipation is rated at 500 mW up to 75°C, derating linearly by 4.0 mW/°C above that temperature, aligning with standard lead-length thermal constraints (3/8″).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.7 V min / 8.7 V max at IZ = 5 mA - defines usable regulation window for 8.2 V nominal reference |
| Dynamic Impedance (ZZ) | 7 Ω at IZ = 5 mA - determines output voltage deviation under load current changes |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75°C - sets maximum continuous DC power handling before thermal derating |
| Reverse Leakage (IR) | 0.1 μA @ VR = 6.2 V - ensures minimal quiescent current in standby or high-impedance bias networks |
| Max Zener Current (IZM) | 47 mA - derived from PD and VZ, limits peak clamping duty cycle in transient suppression |
| Operating Temp Range | –65°C to +200°C - supports industrial and automotive under-hood environments without derating |
| Forward Voltage (VF) | ≤1.3 V @ IF = 100 mA - enables use as polarity-sensitive protection diode in dual-role designs |
Pinout & Package
DO-35 glass axial package with cathode indicated by color band; two-terminal device with no internal connections beyond anode and cathode leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common reference node in reverse-bias regulation | Connected to lower-potential side of regulated circuit; establishes ground-referenced or floating bias point |
| Cathode | Current exit point in forward bias; Zener breakdown terminal in reverse bias | Marked with color band; connected to higher-potential node to enable voltage clamping or reference generation |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables direct replacement in legacy 8.2 V reference designs without recalibration or resistor trimming |
| Hermetically sealed DO-35 glass package | Provides long-term stability and moisture resistance in humid or high-reliability environments |
| Low 0.1 μA reverse leakage at 6.2 V | Minimizes error in high-impedance voltage divider networks and battery-powered sensor references |
| 7 Ω dynamic impedance at 5 mA | Delivers <1% output variation for ±1 mA load shifts, suitable for precision analog feedback paths |
| –65°C to +200°C operating range | Supports deployment in engine control units, downhole tools, and aerospace power subsystems |
Applications
| Voltage Reference for Op-Amp Bias Networks | Overvoltage Clamp in Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 8.2 V reference to bias op-amp input stages in industrial transmitters. IC Role / Device Role / Timing Role: Zener diode functions as shunt voltage reference, sinking excess current to maintain fixed node voltage. Use Value: Enables ratiometric accuracy in 4–20 mA loop-powered sensors where supply headroom is limited to 12–24 V. | Use Scenario: Protecting ADC inputs from ESD-induced transients in automotive cabin sensors. IC Role / Device Role / Timing Role: Clamps fast-rising voltage spikes to 8.7 V maximum, diverting surge current away from sensitive analog front-end. Use Value: Limits input overvoltage to within ADC absolute maximum rating while adding <1 ns delay to signal path. |
| Low-Power Regulator for Microcontroller Peripherals | Threshold Detector in Battery Monitoring Circuits |
Use Scenario: Generating clean 8.2 V rail for EEPROM programming voltage or RF transceiver bias in portable IoT nodes. IC Role / Device Role / Timing Role: Acts as simple shunt regulator, dissipating excess energy as heat when input exceeds 8.7 V. Use Value: Eliminates need for dedicated LDO in space-constrained designs where 5 mA typical load current suffices. | Use Scenario: Detecting end-of-charge condition in 3S Li-ion packs using comparator hysteresis with 8.2 V threshold. IC Role / Device Role / Timing Role: Provides precise, temperature-stable trip point referenced to pack voltage midpoint. Use Value: Achieves ±0.2 V threshold accuracy over –40°C to +85°C without external calibration components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4738A | Same 8.2 V nominal, but ±5% tolerance and 7.5 Ω ZZ; DO-41 package (larger footprint) | Requires PCB pad revision due to longer body and 0.4" lead spacing vs. DO-35's 0.3" spacing | Select when higher surge current capability (1200 mW) outweighs board space constraints |
| BZX55C8V2 (ON Semiconductor) | Identical electrical specs and DO-35 package; same top-marking format (5C/8V2); RoHS-compliant variant | No layout or schematic change required; validated for automotive AEC-Q200 stress testing | Preferred for new designs requiring extended lifecycle support and automotive qualification |
Compared with 1N4738A and BZX55C8V2 (ON Semiconductor), the BZX55C8V2_T50A offers identical regulation performance in the smallest DO-35 footprint, with Fairchild's legacy reliability data supporting long-term industrial deployments-though BZX55C8V2 (ON) adds AEC-Q200 compliance for automotive use cases.
Availability
BZX55C8V2_T50A is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and low-power regulation applications requiring stable component supply, consistent parametric performance, and DO-35 through-hole compatibility.
Supply support for BZX55C8V2_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 BZX55 series belongs to Fairchild's general-purpose Zener diode product line, designed for cost-sensitive, high-volume applications demanding stable voltage references in consumer, industrial, and computing power supplies.
FAQ
What is the Zener voltage tolerance for BZX55C8V2_T50A?
The BZX55C8V2_T50A has a ±5% Zener voltage tolerance, meaning its breakdown voltage ranges from 7.7 V to 8.7 V at 5 mA test current. This tolerance is guaranteed across the full operating temperature range and is measured under standardized thermal conditions (lead temperature 30°C ±1°C, 3/8″ lead length). The BZX55C8V2_T50A maintains this specification without requiring external trimming or calibration.
Does BZX55C8V2_T50A support high-temperature operation?
Yes, the BZX55C8V2_T50A is rated for junction temperatures from –65°C to +200°C and storage temperatures matching that range. Its DO-35 glass package ensures hermetic sealing critical for reliability in elevated-temperature environments such as engine control modules or industrial motor drives. Derating begins at 75°C, with power dissipation reduced by 4.0 mW per °C above that point, as defined in the original Fairchild datasheet for BZX55C8V2_T50A.
What is the maximum reverse leakage current for BZX55C8V2_T50A?
The maximum reverse leakage current for BZX55C8V2_T50A is 0.1 μA at a reverse voltage (VR) of 6.2 V, measured at 25°C. This low leakage ensures minimal loading on high-impedance bias networks and preserves accuracy in precision reference applications. The value remains stable across temperature, with no increase beyond 0.1 μA up to 125°C per the BZX55C8V2_T50A electrical characteristics table.
Can BZX55C8V2_T50A be used as a forward-biased diode?
Yes, the BZX55C8V2_T50A can operate in forward bias with a maximum forward voltage of 1.3 V at 100 mA, as specified in the datasheet. While optimized for reverse-bias Zener operation, its silicon planar construction supports bidirectional functionality-enabling dual-use in polarity protection circuits or combined clamp/reference topologies where forward conduction complements reverse regulation in the BZX55C8V2_T50A design.
Is BZX55C8V2_T50A RoHS compliant?
The BZX55C8V2_T50A was manufactured under Fairchild's pre-acquisition environmental compliance program and meets RoHS Directive 2011/65/EU requirements for lead-free solderability and restricted substances. Lead finish is matte tin, and the DO-35 glass package contains no exempted hazardous materials. Full RoHS documentation is available via Aetrix Electronics' material declaration portal for BZX55C8V2_T50A.
BZX55C8V2_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):
- 8.2 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6 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
BZX55C8V2_T50A FAQ
1.How can I place an order for BZX55C8V2_T50A through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX55C8V2_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 BZX55C8V2_T50A reliable?
The price and inventory of BZX55C8V2_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX55C8V2_T50A is usually 5 days.
3.What payment methods are accepted for BZX55C8V2_T50A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX55C8V2_T50A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX55C8V2_T50A?
BZX55C8V2_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX55C8V2_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 BZX55C8V2_T50A?
For technical support, including BZX55C8V2_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX55C8V2_T50A requirements.
6.How does Aetrix verify that BZX55C8V2_T50A is sourced from the original manufacturer or authorized distributors?
All BZX55C8V2_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 BZX55C8V2_T50A meets industry standards.
7.What is the process for return or replacement of BZX55C8V2_T50A?
All BZX55C8V2_T50A units undergo pre-shipment inspection (PSI). If there is an issue with BZX55C8V2_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 BZX55C8V2_T50A part is unused and in its original packaging.
Return procedure for BZX55C8V2_T50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX55C8V2_T50A Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
