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Microchip Technology 1N6008UR/TR
- Part No.:
- 1N6008UR/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N6008UR/TR.pdf
- Description:
- DIODE ZENER 22V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,933
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Product details
Overview
1N6008UR/TR from Microsemi is a surface-mount 500 mW Zener diode in DO-213AA (MLL34/SOD80) MELF package, rated for 22 V nominal Zener voltage at 5.0 mA test current, with ±5% tolerance (B-suffix), 600 Ω dynamic impedance at IZT, and maximum reverse leakage of 0.1 µA at 17 V. It regulates voltage in power supply reference and overvoltage protection circuits across industrial temperature range.
For engineers reviewing the 1N6008UR/TR datasheet, 1N6008UR/TR pinout, 1N6008UR/TR application, or 1N6008UR/TR equivalent, this page delivers verified electrical parameters, thermal derating behavior, RoHS-compliant commercial-grade availability, and direct alternatives for voltage reference design in space-constrained SMT layouts.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable output voltage under varying load and temperature. Its Zener regulation occurs at 22 V with 5.0 mA test current, exhibiting 600 Ω dynamic impedance (ZZT) and +0.087 %/°C temperature coefficient - indicating positive drift with rising junction temperature.
Designed for surface-mount assembly on FR4 PCBs with 1 oz copper, it features hermetically sealed glass construction, metallurgical bonding, and cathode band polarity marking. Thermal resistance is 150 °C/W junction-to-end-cap and 300 °C/W junction-to-ambient under specified footprint conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 22 V @ 5.0 mA - defines regulated output level in shunt reference circuits |
| Zener Tolerance | ±5% (B-suffix) - ensures voltage accuracy within 20.9–23.1 V at IZT |
| Power Dissipation | 0.5 W at 25 °C - sets maximum continuous DC power before thermal derating applies |
| Dynamic Impedance | 600 Ω @ IZT - determines output voltage variation under changing load current |
| Reverse Leakage Current | 0.1 µA @ 17 V - confirms low standby power loss in high-impedance bias networks |
| Temp. Coefficient | +0.087 %/°C - quantifies voltage drift magnitude per degree Celsius rise |
| Junction Temp. Range | −65 to +175 °C - supports operation in extended industrial and aerospace environments |
Pinout & Package
DO-213AA (SOD80 / MLL34) MELF glass package: cylindrical, hermetically sealed, with tin-lead or RoHS-compliant matte-tin end-cap plating. Cathode identified by single dark band; no discrete pins - terminals are axial end caps.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; establishes polarity for Zener conduction |
| Cathode (banded end) | Regulated output node | Supplies stable 22 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Surface-mount MELF construction | Enables automated placement and reflow soldering on high-density PCBs without lead trimming |
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or harsh environments |
| Metallurgical bonding | Ensures robust internal interconnect integrity under thermal cycling and mechanical stress |
| Radiation hardness | Inherently resistant to total ionizing dose (TID), validated per MicroNote 050 for space applications |
| ESD insensitivity | Withstands >4 kV HBM per MIL-STD-750 Method 1020 without parameter shift or failure |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing feedback voltage in linear regulator or switching converter error amplifiers. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 22 V setpoint for control loop stability. Use Value: Maintains ±5% output accuracy across −65 to +175 °C, enabling reliable regulation without trimming. | Use Scenario: Clamping transient surges on 24 V DC bus lines in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Passive crowbar element diverting excess energy to ground during voltage spikes. Use Value: Low 0.1 µA leakage at 17 V minimizes standby current draw while clamping at 22 V ±5%. |
| Temperature-Stable Bias Network | Aerospace Sensor Interface |
Use Scenario: Generating bias voltage for op-amp input stages in precision analog front-ends. IC Role / Device Role / Timing Role: Low-drift reference source compensating for amplifier offset drift. Use Value: +0.087 %/°C tempco enables predictable compensation modeling across wide ambient ranges. | Use Scenario: Providing regulated excitation voltage to strain gauge bridges in satellite payload telemetry systems. IC Role / Device Role / Timing Role: Radiation-hardened voltage reference ensuring mission-critical sensor accuracy. Use Value: Hermetic glass package and inherent TID hardness support operation in LEO radiation environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N6008UR-1 | No tape-and-reel packaging; bulk or ammo-pack only; identical electrical specs and DO-213AA package | Suitable for prototyping or low-volume hand assembly where reel feeding is unnecessary | Select 1N6008UR/TR for automated SMT production; choose 1N6008UR-1 for bench evaluation or small-batch builds |
| BZX55-C22 | DO-35 axial package; same 22 V ±5%, but higher ZZT (700 Ω) and lower max IZM (48 mA vs. 55 mA) | Preferred for through-hole legacy designs or manual repair; not SMT-compatible | Choose BZX55-C22 only when board layout prohibits MELF components or requires axial form factor |
Compared with 1N6008UR/TR, the 1N6008UR-1 offers identical performance in non-reel formats, while BZX55-C22 provides functional equivalence in axial-leaded packaging but with reduced current capability and higher impedance - making the TR variant optimal for high-reliability, high-density SMT voltage references.
Availability
1N6008UR/TR is available at Aetrix Electronics and suitable for industrial power supplies, aerospace sensor interfaces, and overvoltage protection circuits requiring stable component supply with RoHS-compliant commercial-grade assurance.
Supply support for 1N6008UR/TR 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
Microsemi Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and precision analog components for aerospace, defense, and industrial markets.
The 1N5985BUR–1N6031BUR series was engineered to deliver JEDEC-standard Zener regulation in ruggedized surface-mount MELF packages, targeting applications demanding stable voltage references under extreme thermal, mechanical, and radiation stress.
FAQ
What is the Zener voltage tolerance of the 1N6008UR/TR?
The 1N6008UR/TR has a nominal Zener voltage of 22 V with ±5% tolerance (B-suffix), meaning its actual breakdown voltage falls between 20.9 V and 23.1 V when tested at 5.0 mA. This tolerance is confirmed in the Electrical Characteristics table on page 3 of Microsemi's T4-LDS-0228-1 datasheet and applies under standard 30 °C lead temperature conditions.
Is the 1N6008UR/TR RoHS compliant?
Yes, the 1N6008UR/TR is RoHS compliant (e3 suffix), with matte-tin end-cap plating meeting EU Directive 2011/65/EU requirements. RoHS compliance is explicitly stated in the "Part Nomenclature" section of the datasheet and applies only to commercial-grade versions - military-screened variants are not RoHS compliant.
What is the maximum Zener current rating for the 1N6008UR/TR?
The maximum dc Zener current (IZM) for the 1N6008UR/TR is 55 mA, calculated per the formula IZM = P / VZM where P = 0.5 W and VZM = 23.1 V (upper limit of ±5% tolerance). This value is listed in the Electrical Characteristics table on page 3 and assumes operation at 25 °C ambient with proper PCB thermal management.
Does the 1N6008UR/TR have a defined cathode marking?
Yes, the 1N6008UR/TR uses a single dark cathode band on the glass body to identify the cathode terminal. As stated in the "Mechanical and Packaging" section, the diode is operated with the banded end positive relative to the opposite end during Zener regulation - confirming cathode-anode polarity for reverse-bias operation.
What is the thermal resistance of the 1N6008UR/TR when mounted on FR4?
When mounted on an FR4 PCB with 1 oz copper and the recommended footprint, the 1N6008UR/TR exhibits a thermal resistance of 150 °C/W junction-to-end-cap and 300 °C/W junction-to-ambient. These values are specified in the "Maximum Ratings" table on page 1 and govern derating curves shown in Figure 1 of the datasheet.
1N6008UR/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N6008UR/TR FAQ
1.How can I place an order for 1N6008UR/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6008UR/TR 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 1N6008UR/TR reliable?
The price and inventory of 1N6008UR/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6008UR/TR is usually 5 days.
3.What payment methods are accepted for 1N6008UR/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6008UR/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6008UR/TR?
1N6008UR/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6008UR/TR 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 1N6008UR/TR?
For technical support, including 1N6008UR/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6008UR/TR requirements.
6.How does Aetrix verify that 1N6008UR/TR is sourced from the original manufacturer or authorized distributors?
All 1N6008UR/TR 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 1N6008UR/TR meets industry standards.
7.What is the process for return or replacement of 1N6008UR/TR?
All 1N6008UR/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N6008UR/TR, 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 1N6008UR/TR part is unused and in its original packaging.
Return procedure for 1N6008UR/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6008UR/TR Tags
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