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Microchip Technology UM4006D
- Part No.:
- UM4006D
- Manufacturer:
- Microchip Technology
- Category:
- RF Diodes
- Package:
- Stud
- Datasheet:
-
UM4006D.pdf
- Description:
- SI PPIN HERMETIC STUD
- Quantity:
- Payment:
- Shipping:
Inventory:5,447
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Product details
Overview
UM4006D from Microsemi is a high-power RF PIN diode designed for low-distortion switching and attenuation in HF–S-band systems. It features 1000 V reverse voltage rating, 37.5 W power dissipation (at stud temperature), 0.5 Ω typical series resistance at 100 MHz, >5 µs carrier lifetime, and low 3 pF capacitance at 100 V reverse bias-enabling robust control of high RF levels with minimal DC bias current in UHF phase shifters and megawatt duplexers.
For engineers reviewing the UM4006D datasheet, UM4006D pinout, UM4006D application, or UM4006D equivalent, key selection criteria include reverse voltage capability, thermal path performance under pulsed RF loads, carrier lifetime-dependent linearity, and compatibility with automatic insertion equipment in high-reliability RF front-end assemblies.
Technical Context
The UM4006D employs a non-cavity, thermally matched silicon PIN structure with a thick intrinsic region optimized for high peak-power handling and low intermodulation distortion. Its long carrier lifetime (>5 µs) sustains conductivity during RF half-cycles while minimizing stored charge-related switching transients.
Designed for stud-mount configuration (Style D), it delivers 37.5 W power dissipation at 25 °C stud temperature with 6 °C/W thermal resistance-significantly lower than Style A or B variants-making it suitable for continuous-wave and pulsed RF applications requiring stable junction temperature control in antenna couplers and transmit/receive switches.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage | 1000 V - supports operation in high-voltage RF switch legs without breakdown up to rated peak RF voltage |
| Power Dissipation | 37.5 W at 25 °C stud temperature - enables sustained CW operation in high-power UHF phase shifters |
| Series Resistance | 0.5 Ω max at 100 MHz - ensures low insertion loss and high RF power transfer efficiency |
| Capacitance | 3 pF max at 100 V, 1 MHz - minimizes shunt loading in filter/cavity network switching applications |
| Carrier Lifetime | >5 µs - provides linear RF conduction over wide dynamic range and reduces harmonic generation |
| Parallel Resistance | 10 kΩ min at 100 V, 100 MHz - maintains high isolation in reverse-biased RF switch states |
Pinout & Package
UM4006D is housed in a stud-mounted metal package (Style D) with anode and cathode terminals isolated via ceramic insulator. The case serves as the cathode connection, and the stud provides mechanical mounting and thermal conduction path to heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead) | Forward current entry point | Connected to RF signal path in series-switch configuration; requires low-inductance bond wire or ribbon |
| Cathode (Case/Stud) | Reverse-bias return and thermal path | Electrically grounded to heatsink; defines reference plane for RF isolation and enables direct thermal coupling to chassis |
Key Features
| Feature | Design Value |
|---|---|
| Thermally matched configuration | Reduces thermal stress during rapid RF power cycling, extending reliability in megawatt-pulse duplexers |
| Non-cavity design | Eliminates internal resonances and parasitic modes that degrade S-parameter stability above 2 GHz |
| Low capacitance at 0 V bias | Enables high-isolation RF switching in cavity-tuned antenna selector networks without retuning |
| Compatible with automatic insertion equipment | Supports high-volume assembly of RF subsystems using standard pick-and-place and wave-solder processes |
Applications
| UHF Phase Shifters | Megawatt Peak-Power Duplexers |
|---|---|
Use Scenario: Digital beamforming arrays requiring precise phase control across multiple antenna elements in radar systems. IC Role / Device Role / Timing Role: PIN diode switch element in switched-line or loaded-line phase shifter topologies. Use Value: 1000 V reverse rating and 37.5 W dissipation allow full 360° phase coverage at kW-level RF input without arcing or thermal runaway. | Use Scenario: High-power T/R modules in ground-based radar transmitters handling 1 MW peak pulses. IC Role / Device Role / Timing Role: Transmit/receive switch core managing RF path isolation between high-power amplifier and sensitive receiver chain. Use Value: >5 µs carrier lifetime ensures clean switching transitions with minimal transient feedthrough during pulse edges. |
| Antenna Coupler Networks | RF Filter Bank Switching |
Use Scenario: Reconfigurable multi-band base station antennas dynamically selecting coupling paths for MIMO operation. IC Role / Device Role / Timing Role: High-isolation RF switch routing coupled signals between feed points and measurement ports. Use Value: 3 pF capacitance and 10 kΩ parallel resistance maintain impedance match and minimize insertion loss across HF–S band. | Use Scenario: Software-defined radio front-ends requiring real-time selection of bandpass filters for frequency-agile operation. IC Role / Device Role / Timing Role: Series/shunt switch controlling inclusion/exclusion of LC elements in cavity or lumped-element filter banks. Use Value: Low 0.5 Ω series resistance preserves filter Q-factor and passband flatness under RF bias conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-power RF PIN diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UM4906D | Same voltage/power ratings but shorter thermal path (4 °C/W vs. 6 °C/W); higher peak power capability | Better suited for pulsed-only or short-duty-cycle megawatt applications where thermal mass is less critical | Select UM4906D when peak power exceeds 100 kW and average power remains below 37.5 W |
| MACOM MADP-000907 | Lower 600 V rating, 25 W dissipation, surface-mount SM-2 package; 0.4 Ω RS | Targeted at compact SMT RF modules rather than stud-mounted high-reliability systems | Choose MADP-000907 only for space-constrained designs accepting reduced voltage margin and thermal headroom |
Compared with UM4906D and MADP-000907, UM4006D offers optimal balance of 1000 V ruggedness, 37.5 W continuous dissipation, and proven field reliability in mission-critical UHF infrastructure-making it preferred for fixed-station radar and broadcast systems demanding long-term thermal stability.
Availability
UM4006D is available at Aetrix Electronics and suitable for UHF phase shifters, megawatt duplexers, antenna coupler networks, and RF filter bank switching requiring stable component supply across extended production lifecycles.
Supply support for UM4006D 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 (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and RF components for aerospace, defense, and communications infrastructure.
The UM4000/UM4900 series was developed specifically for high-power RF switching in radar, satellite, and broadcast systems-emphasizing rugged voltage handling, thermal robustness, and low-distortion RF performance under extreme duty cycles.
FAQ
What is the maximum reverse voltage rating for UM4006D?
The UM4006D has a reverse voltage rating of 1000 V at 10 µA leakage current. This rating is confirmed in the Absolute Maximum Ratings table on page 1 of the official Microsemi datasheet and enables reliable operation in high-voltage RF switch configurations such as T/R modules and high-power attenuators where transient overvoltages may occur.
Does UM4006D require a heatsink, and what is its thermal resistance?
Yes, UM4006D requires a heatsink mounted to its stud (cathode) terminal. Its thermal resistance is 6 °C/W at 25 °C stud temperature, as specified in the Absolute Maximum Ratings table. Proper heatsinking is essential to maintain junction temperature within safe limits during continuous 37.5 W power dissipation.
What is the typical series resistance of UM4006D at RF frequencies?
The typical series resistance of UM4006D is 0.5 Ω measured at 100 MHz with 100 mA forward current, per the Electrical Parameters table on page 2 of the datasheet. This low resistance ensures minimal insertion loss in series-switch applications and supports efficient RF power transfer in high-frequency attenuator designs.
Is UM4006D RoHS compliant?
Standard UM4006D uses Sn/Pb finish and is not RoHS compliant. For RoHS compliance, the UMX4006D variant must be selected-it features matte tin plating and meets EU Directive 2002/95/EC requirements. The prefix "UMX" explicitly denotes RoHS-compliant versions across the UM4000/UM4900 family.
Can UM4006D be used in surface-mount applications?
No, UM4006D is a stud-mount (Style D) device and is not compatible with surface-mount assembly. It requires mechanical fastening to a heatsink via its threaded stud. For surface-mount alternatives, consider the UM4006SM variant or other SMT-compatible PIN diodes like the MACOM MADP-000907-but note these differ in voltage rating, power handling, and thermal performance.
UM4006D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- UM4000
- Package/Case:
- Stud
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Type:
- PIN - Single
- Voltage - Peak Reverse (Max):
- 600V
- Current - Max:
- -
- Capacitance @ Vr, F:
- 3pF @ 100V, 1MHz
- Resistance @ If, F:
- 500mOhm @ 100mA, 100MHz
- Power Dissipation (Max):
- 18.75 W
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
UM4006D FAQ
1.How can I place an order for UM4006D through Aetrix?
Please submit a Request for Quotation (RFQ) for UM4006D 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 UM4006D reliable?
The price and inventory of UM4006D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UM4006D is usually 5 days.
3.What payment methods are accepted for UM4006D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UM4006D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UM4006D?
UM4006D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UM4006D 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 UM4006D?
For technical support, including UM4006D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UM4006D requirements.
6.How does Aetrix verify that UM4006D is sourced from the original manufacturer or authorized distributors?
All UM4006D 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 UM4006D meets industry standards.
7.What is the process for return or replacement of UM4006D?
All UM4006D units undergo pre-shipment inspection (PSI). If there is an issue with UM4006D, 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 UM4006D part is unused and in its original packaging.
Return procedure for UM4006D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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