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onsemi 1N6009B_T50R
- Part No.:
- 1N6009B_T50R
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N6009B_T50R.pdf
- Description:
- DIODE ZENER 24V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:3,744
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Product details
Overview
1N6009B_T50R from Fairchild Semiconductor is a 22.8 V ±5% Zener diode in DO-35 glass package, rated for 500 mW power dissipation at TL ≤ 75°C with 4.0 mW/°C derating, 62 mA maximum Zener current (IZM), and 600 Ω dynamic impedance (ZZ) at 5 mA test current - used for precision voltage regulation in low-power analog reference and overvoltage protection circuits.
For engineers reviewing the 1N6009B_T50R datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, thermal limits, leakage behavior at 18 V reverse bias, forward voltage ≤1.2 V at 200 mA, and DO-35 mechanical interface details required for board-level validation and BOM selection.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across load variations, with specified Zener voltage tolerance of ±5% and guaranteed performance over -65°C to +200°C junction temperature range. Its 600 Ω impedance at 5 mA ensures predictable regulation under light-load conditions.
The device uses a glass-passivated DO-35 axial package with cathode band marking, supporting lead-free soldering and meeting JEDEC DO-35 mechanical standards. Forward conduction is characterized by VF ≤ 1.2 V at IF = 200 mA, enabling bidirectional circuit analysis where forward conduction may occur during transient events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.8 V nominal, min 21.66 V / max 23.94 V at 5 mA - defines regulated output voltage window under standard test conditions |
| Power Dissipation (PD) | 500 mW at TL ≤ 75°C - sets maximum continuous thermal load before derating applies |
| Zener Impedance (ZZ) | 600 Ω at IZ = 5 mA - determines AC regulation sensitivity and ripple rejection capability |
| Max Zener Current (IZM) | 62 mA - establishes absolute DC current limit before thermal runaway risk increases |
| Leakage Current (IR) | 0.1 mA at VR = 18 V - quantifies off-state conduction affecting high-impedance bias networks |
| Forward Voltage (VF) | ≤1.2 V at IF = 200 mA - defines voltage drop during forward conduction, relevant for clamping or dual-direction protection |
| Operating Temp Range | -65°C to +200°C - supports deployment in automotive under-hood, industrial motor control, and aerospace environments |
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 | Forward current entry / Reverse breakdown reference | Connected to lower-potential node in regulation or clamp configuration; defines polarity for Zener operation |
| Cathode | Forward current exit / Zener voltage reference terminal | Marked by color band; connected to regulated output node; voltage referenced to this point in circuit design |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables tight voltage reference without external trimming in cost-sensitive analog designs |
| 600 Ω dynamic impedance at 5 mA | Provides stable regulation under varying load currents up to 10 mA without significant voltage shift |
| 0.1 mA leakage at 18 V reverse bias | Minimizes error in high-resistance voltage divider networks used for sensing or feedback |
| DO-35 glass package with cathode band | Ensures mechanical robustness, hermetic sealing, and unambiguous polarity identification on PCB |
| -65°C to +200°C operating range | Supports reliability-critical applications including engine control units and downhole instrumentation |
Applications
| Low-Power Voltage Reference | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Providing stable 22.8 V reference for ADC biasing, op-amp offset calibration, or sensor excitation in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Precision voltage reference source establishing known potential for analog signal conditioning. Use Value: ±5% tolerance and 600 Ω impedance ensure <±15 mV drift over load variation, reducing calibration overhead in field-deployed devices. |
Use Scenario: Protecting microcontroller I/O pins or analog front-end inputs from ESD-induced transients exceeding 18 V. IC Role / Device Role / Timing Role: Shunt clamping element diverting excess energy to ground when input exceeds 22.8 V breakdown threshold. Use Value: 62 mA IZM rating allows absorption of 1.38 J (22.8 V × 62 mA × 1 s) without failure, compatible with IEC 61000-4-2 Level 4 testing. |
| DC Power Rail Stabilization | Temperature-Stable Bias Network |
Use Scenario: Stabilizing 24 V supply rail in industrial PLC modules where LDO dropout margin is insufficient. IC Role / Device Role / Timing Role: Parallel voltage regulator maintaining rail integrity during line transients and load switching noise. Use Value: 500 mW PD rating enables continuous regulation at up to 21.9 mA (22.8 V × 21.9 mA ≈ 500 mW), sufficient for auxiliary logic rails. |
Use Scenario: Generating temperature-invariant bias current for discrete transistor amplifiers in telecom line drivers. IC Role / Device Role / Timing Role: Zener-based current source element leveraging stable VZ to set base-emitter voltage differential. Use Value: -65°C to +200°C operating range ensures <±0.5% VZ drift over full industrial temperature span, preserving gain stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N6009RLG | Same 22.8 V Zener voltage, DO-35 package, but RoHS-compliant lead finish and tape-and-reel packaging | No functional difference; optimized for automated SMT assembly rather than manual through-hole prototyping | Select 1N6009RLG for volume production requiring RoHS compliance and pick-and-place compatibility |
| BZX55-C24 | 24 V nominal Zener voltage (±5%), same DO-35 package, 500 mW rating, but higher ZZ = 80 Ω at 5 mA | Higher regulation accuracy due to lower impedance, but 5.3% higher nominal voltage shifts reference point | Select BZX55-C24 only if system tolerances allow 24 V instead of 22.8 V and tighter regulation is prioritized over exact voltage match |
Compared with 1N6009B_T50R, 1N6009RLG offers identical electrical performance with enhanced manufacturability, while BZX55-C24 trades exact voltage alignment for improved dynamic regulation - choice depends on whether voltage accuracy or impedance performance dominates the design requirement.
Availability
1N6009B_T50R is available at Aetrix Electronics and suitable for low-power voltage reference, overvoltage clamp protection, and DC rail stabilization applications requiring stable component supply and long-term obsolescence management.
Supply support for 1N6009B_T50R 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 1N6009B_T50R belongs to Fairchild's legacy 1N5985B–1N6025B Zener diode family, designed for general-purpose voltage regulation and protection in industrial, automotive, and consumer electronics where reliability and wide temperature operation are essential.
FAQ
What is the Zener voltage tolerance for 1N6009B_T50R?
The 1N6009B_T50R has a Zener voltage tolerance of ±5%, meaning its actual breakdown voltage falls between 21.66 V and 23.94 V when measured at 5 mA test current and TL = 30°C ± 1°C. This tolerance is confirmed in the Fairchild 1N5985B–1N6025B datasheet Rev. C2, Table on page 2, and applies directly to the 1N6009B_T50R variant as part of the defined family specification.
Does 1N6009B_T50R support high-temperature operation?
Yes, the 1N6009B_T50R is rated for operation from -65°C to +200°C, as specified in the Absolute Maximum Ratings table of the Fairchild datasheet. This wide junction temperature range makes it suitable for under-hood automotive electronics, industrial motor drives, and downhole oilfield equipment where ambient temperatures exceed 125°C.
What is the forward voltage of 1N6009B_T50R?
The forward voltage (VF) of the 1N6009B_T50R is specified as ≤1.2 V at a forward current (IF) of 200 mA. This parameter is documented on page 2 of the Fairchild 1N5985B–1N6025B datasheet Rev. C2 and reflects the diode's conduction behavior when used in bidirectional protection or clamping configurations.
How is the cathode identified on 1N6009B_T50R?
The cathode of the 1N6009B_T50R is marked by a visible color band on the DO-35 glass body, consistent with industry-standard polarity marking for axial-leaded Zener diodes. This marking is explicitly noted in the "General Requirements" section on page 4 of the Fairchild datasheet and must be aligned toward the lower-potential side of the circuit during placement.
What is the maximum Zener current (IZM) for 1N6009B_T50R?
The maximum Zener current (IZM) for 1N6009B_T50R is 62 mA, as listed in the Electrical Characteristics table on page 2 of the Fairchild datasheet. This value represents the peak DC current the device can sustain continuously at 22.8 V without exceeding its 500 mW power limit under thermal equilibrium conditions at TL ≤ 75°C.
1N6009B_T50R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 24 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 62 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 18 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
1N6009B_T50R FAQ
1.How can I place an order for 1N6009B_T50R through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6009B_T50R 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 1N6009B_T50R reliable?
The price and inventory of 1N6009B_T50R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6009B_T50R is usually 5 days.
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1N6009B_T50R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6009B_T50R 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 1N6009B_T50R?
For technical support, including 1N6009B_T50R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6009B_T50R requirements.
6.How does Aetrix verify that 1N6009B_T50R is sourced from the original manufacturer or authorized distributors?
All 1N6009B_T50R 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 1N6009B_T50R meets industry standards.
7.What is the process for return or replacement of 1N6009B_T50R?
All 1N6009B_T50R units undergo pre-shipment inspection (PSI). If there is an issue with 1N6009B_T50R, 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 1N6009B_T50R part is unused and in its original packaging.
Return procedure for 1N6009B_T50R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6009B_T50R Tags
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