My Inquiry
My Account
onsemi 1N6009B_T50A
- Part No.:
- 1N6009B_T50A
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N6009B_T50A.pdf
- Description:
- DIODE ZENER 24V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:3,701
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N6009B_T50A 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 clamp circuits.
For engineers reviewing the 1N6009B_T50A datasheet, pinout, applications, or equivalent options, key selection criteria include verified Zener voltage tolerance, thermal derating behavior, leakage current at 18 V reverse bias, and DO-35 mechanical compatibility with legacy through-hole PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference with stable breakdown at 22.8 V under 5 mA DC test current, maintaining regulation across -65°C to +200°C junction temperature range. Its 600 Ω Zener impedance at IZ and 600 Ω knee impedance (ZZK) at 250 μA define low-noise performance in feedback paths.
The DO-35 glass package features axial leads with cathode band marking, supporting lead temperature-controlled testing per JEDEC JESD24-A. Forward voltage is specified at ≤1.2 V @ 200 mA, confirming standard silicon PN junction behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.8 V min / 24 V typ / 25.2 V max @ 5 mA - defines regulated output voltage window under nominal bias |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75°C - sets maximum continuous power handling before thermal derating applies |
| Zener Impedance (ZZ) | 600 Ω @ 5 mA - determines AC regulation stability in feedback or reference loops |
| Max Zener Current (IZM) | 62 mA - limits peak surge capability without exceeding safe operating area |
| Leakage Current (IR) | 0.1 mA @ VR = 18 V - ensures minimal error current in high-impedance bias networks |
| Operating Temp Range | -65°C to +200°C - enables use in automotive under-hood and industrial high-temp environments |
Pinout & Package
DO-35 glass axial package with cathode identified by single black band on body; leads are unmarked anode/cathode terminals requiring orientation verification via band placement during PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-bias Zener operation; carries full IZ current during regulation |
| Cathode | Reverse-bias breakdown terminal | Marked with black band; connected to higher-potential node to enable controlled avalanche conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables predictable regulation without post-production trimming in cost-sensitive analog references |
| 600 Ω dynamic impedance at 5 mA | Minimizes output voltage variation under load changes in precision feedback networks |
| 0.1 mA leakage at 18 V reverse bias | Reduces error contribution in high-resistance voltage divider biasing of op-amp references |
| DO-35 glass package with axial leads | Ensures mechanical and thermal compatibility with legacy through-hole manufacturing and rework processes |
Applications
| Industrial Sensor Reference | Power Supply Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 22.8 V reference for 4–20 mA transmitter loop-powered sensors in factory automation systems. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference establishing precise excitation voltage for bridge sensor conditioning circuitry. Use Value: Maintains <±1% output accuracy across -40°C to +85°C ambient due to tight VZ tolerance and low ZZ. |
Use Scenario: Clamping transient surges on 24 V DC industrial control bus lines exposed to inductive switching noise. IC Role / Device Role / Timing Role: Passive overvoltage protection element absorbing energy above 25.2 V to safeguard downstream logic and interface ICs. Use Value: Limits clamped voltage to ≤25.2 V with 62 mA IZM headroom, preventing latch-up in 24 V-rated microcontrollers. |
| Low-Power Analog Front-End | Legacy Equipment Voltage Calibration |
Use Scenario: Biasing high-input-impedance instrumentation amplifier stages in portable medical monitoring devices. IC Role / Device Role / Timing Role: Low-current Zener reference supplying stable bias to op-amp input networks with minimal quiescent draw. Use Value: Delivers 22.8 V reference at 5 mA while consuming only 114 mW, extending battery life in Class II medical devices. |
Use Scenario: Replacing obsolete Zener diodes in field-service calibration of vintage test equipment requiring exact 22.8 V reference points. IC Role / Device Role / Timing Role: Drop-in mechanical and electrical replacement for legacy 1N6009B units in repair depots and OEM spares programs. Use Value: Matches original DO-35 footprint, cathode band marking, and VZ specification - enabling zero-change board-level substitution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N6009RLG | Same 22.8 V Zener voltage, ±5% tolerance, DO-35 package, but manufactured by ON Semiconductor with RoHS-compliant plating and tighter IR spec (0.05 mA @ 18 V). | Preferred for new designs requiring RoHS compliance and lower leakage in ultra-low-power sensor nodes. | Select 1N6009RLG when environmental compliance and sub-100 nA leakage sensitivity outweigh legacy supply chain continuity. |
| BZX55C24 | 24 V nominal Zener voltage (22.8–25.2 V range), same DO-35 package, 500 mW rating, but higher ZZ (700 Ω @ 5 mA) and wider tolerance (±5% over 24 V nominal). | Suitable for non-critical clamping where 24 V nominal alignment simplifies BOM consolidation across multiple Zener voltages. | Choose BZX55C24 only if system-level tolerance allows 1.2 V higher nominal regulation point and 100 Ω higher impedance is acceptable. |
Compared with 1N6009B_T50A, 1N6009RLG offers identical electrical function with enhanced environmental compliance, while BZX55C24 trades exact 22.8 V matching for broader industry-standard availability at a slightly higher nominal voltage - making the former ideal for drop-in replacement in legacy systems, the latter better suited for green-design initiatives or multi-voltage BOM rationalization.
Availability
1N6009B_T50A is available at Aetrix Electronics and suitable for industrial sensor reference, power supply overvoltage clamp, and legacy equipment voltage calibration requiring stable component supply with long-lifecycle support.
Supply support for 1N6009B_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 1N6009B_T50A belongs to Fairchild's legacy 1N5985B–1N6025B Zener diode family, designed specifically for general-purpose voltage regulation and transient suppression in industrial, automotive, and consumer electronics where DO-35 reliability and ±5% tolerance were critical.
FAQ
What is the Zener voltage tolerance for 1N6009B_T50A?
The 1N6009B_T50A has a guaranteed Zener voltage tolerance of ±5%, with minimum, typical, and maximum values of 22.8 V, 24 V, and 25.2 V respectively at 5 mA test current. This tolerance is measured under thermal equilibrium conditions at lead temperature of 30°C ± 1°C with 3/8" lead length, ensuring repeatability in production testing and design margining for 1N6009B_T50A-based reference circuits.
Does 1N6009B_T50A support high-temperature operation?
Yes, the 1N6009B_T50A is rated for junction and storage temperatures from -65°C to +200°C, making it suitable for under-hood automotive, downhole oil/gas, and industrial furnace control applications. Its 4.0 mW/°C derating above 75°C allows predictable power reduction in elevated ambient conditions, and the DO-35 glass package maintains mechanical integrity across this full range - a key reliability factor confirmed in Fairchild's 1N5985B–1N6025B qualification data for 1N6009B_T50A.
What is the forward voltage specification for 1N6009B_T50A?
The forward voltage of 1N6009B_T50A is specified as ≤1.2 V at 200 mA forward current, consistent with standard silicon PN junction behavior. This parameter validates proper diode conduction during forward-bias verification or ESD protection path analysis, and confirms absence of abnormal series resistance that could indicate packaging defects - a specification explicitly listed on page 2 of the Fairchild 1N5985B–1N6025B Rev. C2 datasheet for 1N6009B_T50A.
How is cathode identification implemented on 1N6009B_T50A?
The cathode of 1N6009B_T50A is marked by a single black band on the DO-35 glass body, positioned adjacent to the cathode lead. This marking follows JEDEC standard polarity indication and matches the top-marking layout shown in the "Top Mark Information" section of the Fairchild datasheet, where Line 1 is the Fairchild logo, Line 2 is "00", and Line 3 is "9B" - confirming correct orientation for 1N6009B_T50A during manual or automated placement.
Is 1N6009B_T50A suitable for use as a voltage reference in precision analog circuits?
Yes, the 1N6009B_T50A supports precision analog use via its 600 Ω Zener impedance at 5 mA and 0.1 mA leakage at 18 V reverse bias, enabling stable regulation in high-impedance feedback networks. While not a temperature-compensated reference, its ±5% VZ tolerance and low ZZ allow effective use in non-critical references such as sensor excitation or comparator thresholds - validated by application examples in Fairchild's technical documentation for the 1N6009B_T50A family.
1N6009B_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):
- 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_T50A FAQ
1.How can I place an order for 1N6009B_T50A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6009B_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 1N6009B_T50A reliable?
The price and inventory of 1N6009B_T50A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6009B_T50A is usually 5 days.
3.What payment methods are accepted for 1N6009B_T50A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6009B_T50A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6009B_T50A?
1N6009B_T50A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6009B_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 1N6009B_T50A?
For technical support, including 1N6009B_T50A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6009B_T50A requirements.
6.How does Aetrix verify that 1N6009B_T50A is sourced from the original manufacturer or authorized distributors?
All 1N6009B_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 1N6009B_T50A meets industry standards.
7.What is the process for return or replacement of 1N6009B_T50A?
All 1N6009B_T50A units undergo pre-shipment inspection (PSI). If there is an issue with 1N6009B_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 1N6009B_T50A part is unused and in its original packaging.
Return procedure for 1N6009B_T50A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6009B_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…
