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onsemi 1N6002B
- Part No.:
- 1N6002B
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N6002B.pdf
- Description:
- DIODE ZENER 12V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:2,710
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Product details
Overview
1N6002B from Fairchild Semiconductor is a 5% tolerance, 12 V Zener diode in DO-35 glass package, rated for 500 mW power dissipation at TL ≤ 75°C with 4.0 mW/°C derating, 22 Ω zener impedance at 5 mA test current, and 0.1 mA leakage current at 9.1 V reverse voltage. It provides stable voltage reference in low-power regulator and overvoltage clamp circuits.
For engineers reviewing the 1N6002B datasheet, pinout, applications, or equivalent options, key selection criteria include its precise 12 V nominal zener voltage, DO-35 thermal profile, 22 Ω dynamic impedance, and compatibility with through-hole PCB layouts requiring ±5% regulation tolerance.
Technical Context
The 1N6002B operates as a silicon planar Zener diode optimized for stable reverse-biased breakdown at 12 V. Its design uses diffusion-controlled junction formation to achieve tight 5% voltage tolerance and low temperature coefficient across -65°C to +200°C operating range.
It exhibits 22 Ω zener impedance at 5 mA test current and 600 Ω knee impedance at 250 μA, enabling predictable regulation under light-load and transient conditions. The device's 0.1 mA leakage at 9.1 V ensures minimal standby current in battery-powered clamping applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.4 V (min) to 12.6 V (max) at 5 mA - defines usable regulation window for 12 V reference designs |
| Power Dissipation (PD) | 500 mW @ TL ≤ 75°C - sets maximum continuous power handling before thermal derating applies |
| Zener Impedance (ZZ) | 22 Ω @ IZ = 5 mA - determines output voltage variation under load current changes |
| Leakage Current (IR) | 0.1 mA @ VR = 9.1 V - limits quiescent current in high-impedance bias networks |
| Max Zener Current (IZM) | 42 mA - derived from PD/VZ and sets absolute peak DC current capability |
| Operating Temp Range | -65°C to +200°C - supports automotive under-hood and industrial control environments |
Pinout & Package
DO-35 glass axial package with cathode indicated by color band; two-terminal device with anode and cathode leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node in shunt regulator configuration |
| Cathode | Zener breakdown terminal / voltage reference output | Connected to input supply rail; develops regulated 12 V relative to anode when reverse biased |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance | Enables single-bin selection without post-assembly trimming in cost-sensitive 12 V reference designs |
| DO-35 glass package | Provides hermetic sealing and proven reliability for long-term operation in humid or high-vibration environments |
| 22 Ω dynamic impedance | Ensures <±0.1 V output shift per 2 mA load change - suitable for precision analog biasing |
| 0.1 mA leakage at 9.1 V | Reduces standby power loss in always-on protection circuits powered from 12 V sources |
| -65°C to +200°C operating range | Supports deployment in engine control units, industrial PLCs, and aerospace subsystems without derating |
Applications
| Voltage Reference for Op-Amp Biasing | Overvoltage Clamp in Sensor Interface |
|---|---|
Use Scenario: Providing stable 12 V reference to bias op-amp input stages in precision signal conditioning circuits. IC Role / Device Role: Shunt voltage reference establishing fixed DC potential for amplifier common-mode input range. Use Value: 22 Ω impedance and ±5% tolerance maintain reference stability within ±0.6 V across production lots and temperature extremes. |
Use Scenario: Protecting analog front-end inputs of microcontrollers from transient overvoltage events on 12 V sensor supply rails. IC Role / Device Role: Passive crowbar element clamping rail voltage to safe level during ESD or load dump. Use Value: 42 mA max zener current and 0.1 mA leakage enable fast response without loading normal operation. |
| Low-Power Regulator for MCU Peripherals | Threshold Detector in Power Sequencing |
Use Scenario: Generating clean 12 V supply for EEPROM programming or RTC backup circuits in battery-backed systems. IC Role / Device Role: Simple shunt regulator delivering regulated voltage with minimal external components. Use Value: 500 mW rating and DO-35 thermal profile allow sustained operation at ambient up to 75°C without heatsinking. |
Use Scenario: Detecting when main 12 V rail reaches valid operating threshold before enabling downstream logic. IC Role / Device Role: Zener-based comparator input stage triggering reset or enable signals at defined voltage. Use Value: Tight 11.4–12.6 V breakdown window ensures accurate sequencing timing within ±0.6 V tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4742A | 12 V nominal, ±5%, 1 W rating, DO-41 package, 22 Ω ZZ @ 21 mA | Higher power handling but larger footprint and different thermal mass | Select when >500 mW continuous dissipation or higher surge current capability is required |
| BZX55-C12 | 12 V nominal, ±5%, 500 mW, DO-35, 25 Ω ZZ @ 5 mA, 0.1 mA IR @ 9.1 V | Nearly identical electrical specs but manufactured by Vishay with alternate marking and traceability | Choose for dual-sourcing flexibility while maintaining same board layout and thermal behavior |
Compared with 1N6002B, the 1N4742A offers higher power margin at the cost of larger DO-41 footprint and different thermal derating curve, while BZX55-C12 delivers functionally matched performance in the same DO-35 package with alternate supply chain assurance.
Availability
1N6002B 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 long-lifecycle availability.
Supply support for 1N6002B 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 devices before its acquisition by ON Semiconductor in 2016.
The 1N6002B belongs to Fairchild's legacy 1N5985B–1N6025B Zener diode family, designed for general-purpose voltage regulation and clamping in industrial, automotive, and consumer electronics where reliability and tight tolerance are critical.
FAQ
What is the nominal Zener voltage of the 1N6002B?
The 1N6002B has a nominal Zener voltage of 12 V, with a guaranteed range of 11.4 V (minimum) to 12.6 V (maximum) at 5 mA test current and ±5% tolerance. This specification is measured under thermal equilibrium conditions at lead temperature of 30°C ± 1°C with 3/8" lead length, as defined in the Fairchild datasheet Rev. C2.
What package type does the 1N6002B use?
The 1N6002B uses the DO-35 glass axial package, identified by a cathode color band on the body. This hermetically sealed package supports operating temperatures from -65°C to +200°C and is compatible with standard through-hole assembly processes and wave soldering profiles.
What is the maximum power dissipation for the 1N6002B?
The 1N6002B has a maximum power dissipation of 500 mW at lead temperature (TL) ≤ 75°C with 3/8" lead length. Above 75°C, it derates linearly at 4.0 mW/°C, reaching zero dissipation at approximately 200°C junction temperature - consistent with its specified TJ limit.
How does the 1N6002B perform under low-current conditions?
The 1N6002B maintains regulation down to 250 μA test current, with a knee impedance (ZZK) of 600 Ω. Its leakage current is limited to 0.1 mA at 9.1 V reverse voltage, making it suitable for low-quiescent-current applications such as battery-backed sensors or always-on protection circuits.
Is the 1N6002B suitable for automotive applications?
Yes, the 1N6002B is suitable for automotive applications due to its -65°C to +200°C operating and storage temperature range, DO-35 hermetic construction, and stable Zener characteristics across temperature. It has been used in engine control modules, body electronics, and sensor interface circuits where AEC-Q200 stress testing compliance is supported by its underlying process.
1N6002B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 22 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 9.1 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
1N6002B FAQ
1.How can I place an order for 1N6002B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6002B 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 1N6002B reliable?
The price and inventory of 1N6002B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6002B is usually 5 days.
3.What payment methods are accepted for 1N6002B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6002B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6002B?
1N6002B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6002B 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 1N6002B?
For technical support, including 1N6002B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6002B requirements.
6.How does Aetrix verify that 1N6002B is sourced from the original manufacturer or authorized distributors?
All 1N6002B 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 1N6002B meets industry standards.
7.What is the process for return or replacement of 1N6002B?
All 1N6002B units undergo pre-shipment inspection (PSI). If there is an issue with 1N6002B, 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 1N6002B part is unused and in its original packaging.
Return procedure for 1N6002B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6002B Tags
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MM5Z5V1ST1G
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