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Microchip Technology UM4010CR
- Part No.:
- UM4010CR
- Manufacturer:
- Microchip Technology
- Category:
- RF Diodes
- Package:
- Stud
- Datasheet:
-
UM4010CR.pdf
- Description:
- SI PPIN HERMETIC STUD
- Quantity:
- Payment:
- Shipping:
Inventory:4,241
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Product details
Overview
UM4010CR from Microsemi is a high-power RF PIN diode with 1000 V reverse voltage rating, 0.5 Ω typical series resistance at 100 MHz, and >5 µs carrier lifetime, designed for low-distortion switching and attenuation in HF–S-band systems including UHF phase shifters and megawatt duplexers.
For engineers reviewing the UM4010CR datasheet, UM4010CR pinout, UM4010CR application, or UM4010CR equivalent, key selection criteria include reverse voltage capability, thermal resistance under stud-mount conditions, RF capacitance at 100 V bias, carrier lifetime for charge control, and compatibility with automatic insertion equipment in high-reliability RF subsystems.
Technical Context
The UM4010CR operates as a current-controlled RF switch/attenuator using its thick intrinsic (I) region to sustain high peak RF voltages beyond applied reverse bias. Its long carrier lifetime (>5 µs) enables efficient RF conduction with low DC bias current while maintaining low distortion across HF through S-band frequencies.
Thermally, the CR package uses a stud-mounted configuration with direct thermal path from chip to stud, supporting up to 25 W power dissipation at 25°C stud temperature and 6°C/W thermal resistance-critical for continuous-wave and pulsed high-power RF applications such as antenna selectors and cavity network switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage | 1000 V - supports high-voltage RF blocking in duplexers and phase shifters without breakdown |
| Series Resistance | 0.5 Ω max at 100 MHz - ensures low insertion loss and minimal RF heating during conduction |
| Carrier Lifetime | >5 µs - enables precise RF amplitude control with low bias current and reduced harmonic distortion |
| Capacitance | 2.4–3.0 pF at 100 V, 1 MHz - maintains stable impedance matching in filter/cavity networks |
| Power Dissipation | 25 W at 25°C stud temperature - defines continuous RF handling capacity in thermally constrained mounts |
| Thermal Resistance | 6°C/W (stud temp) - determines junction-to-stud thermal drop under sustained RF load |
| Forward Voltage | 1.0 V at 100 mA - sets minimum bias drive requirement for full conduction state |
Pinout & Package
The UM4010CR is housed in a stud-mounted ceramic-metal "CR" package with two terminals: anode and cathode, both accessible via threaded stud (anode) and base flange (cathode), optimized for high-power RF grounding and heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Stud) | RF input / DC bias feed | Threaded metal stud serves as primary RF signal path and DC bias terminal; requires conductive mounting to heatsink |
| Cathode (Flange) | RF return / ground reference | Electrically isolated metal flange provides low-inductance RF ground path and mechanical mounting surface |
Key Features
| Feature | Design Value |
|---|---|
| Non-cavity construction | Eliminates parasitic resonances in high-frequency operation above 2 GHz |
| Thermally matched configuration | Minimizes thermal stress cycling between silicon die and ceramic-metal package during RF power transients |
| Low capacitance at 0 V bias | Reduces off-state RF leakage and improves isolation in switched filter banks |
| Compatible with automatic insertion | Enables high-throughput assembly of RF front-end modules without manual handling |
| RoHS-compliant matte tin finish | Meets EU Directive 2002/95/EC; eliminates lead-based solder compatibility concerns in production |
Applications
| UHF Phase Shifters | Megawatt Duplexers |
|---|---|
Use Scenario: Beam-steering arrays in radar systems requiring rapid, low-loss RF path reconfiguration. IC Role / Device Role / Timing Role: High-power RF switch element controlling signal path phase delay via bias-controlled I-region conductivity. Use Value: 1000 V reverse rating and >5 µs carrier lifetime enable clean phase transitions with <−40 dB intermodulation distortion at S-band. | Use Scenario: Transmit/receive isolation in pulsed radar transceivers operating at multi-megawatt peak power. IC Role / Device Role / Timing Role: High-current RF switch isolating T/R paths during high-voltage pulse events. Use Value: 25 W power dissipation and 6°C/W thermal resistance sustain reliable operation under 1 µs, 100 kW pulses without thermal runaway. |
| Antenna Selectors | Cavity Network Couplers |
Use Scenario: Multi-band communication systems dynamically selecting optimal antennas based on frequency band and link quality. IC Role / Device Role / Timing Role: RF series/shunt switch integrating/disconnecting antenna elements from shared RF front-end. Use Value: Low 2.4–3.0 pF capacitance at 100 V bias preserves Q-factor and tuning range of coupled antenna structures. | Use Scenario: Reconfigurable filter banks in satellite payload transponders where inductors/capacitors are switched into cavity resonators. IC Role / Device Role / Timing Role: High-isolation RF switch enabling dynamic coupling coefficient adjustment in microwave cavities. Use Value: 0.5 Ω series resistance minimizes insertion loss (<0.15 dB) while maintaining >45 dB off-state isolation at 2 GHz. |
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 |
|---|---|---|---|
| UMX4010CR | RoHS-compliant matte tin finish; identical electrical specs and thermal performance | Required for lead-free manufacturing; same mounting and RF behavior | Select when compliance with EU Directive 2002/95/EC is mandatory |
| UM4910CR | Higher 37.5 W power rating and 4°C/W thermal resistance due to shorter thermal path | Better suited for continuous-wave high-duty-cycle applications exceeding 25 W average power | Choose for elevated thermal loads where UM4010CR approaches derating limits |
Compared with UM4010CR, UMX4010CR offers identical RF and thermal performance with RoHS compliance, while UM4910CR delivers higher power headroom at the cost of slightly different thermal interface requirements-enabling design flexibility across military radar, satellite, and broadcast RF subsystems.
Availability
UM4010CR is available at Aetrix Electronics and suitable for UHF phase shifters, megawatt duplexers, antenna selectors, and cavity network couplers requiring stable component supply under MIL-STD-883 qualified conditions.
Supply support for UM4010CR 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) designs high-reliability analog and RF semiconductors for aerospace, defense, and communications infrastructure.
The UM4000/UM4900 series was developed specifically for high-power RF switching and attenuation in mission-critical radar, EW, and satellite systems demanding proven field reliability and thermal robustness.
FAQ
What is the maximum reverse voltage rating for UM4010CR?
The UM4010CR has a reverse voltage rating of 1000 V at 10 µA leakage current. This specification allows the UM4010CR to safely block high RF voltages in duplexers and phase shifters without breakdown, even when peak RF excursions exceed the DC bias level. The 1000 V rating is confirmed in the Absolute Maximum Ratings table on page 1 of the official Microsemi datasheet for UM4000/UM4900.
Does UM4010CR support automatic insertion during PCB assembly?
Yes, UM4010CR is compatible with automatic insertion equipment. Its CR package features standardized mechanical dimensions and robust terminal geometry, allowing pick-and-place and axial insertion without damage. This capability is explicitly listed under KEY FEATURES in the Microsemi datasheet and supports high-volume production of RF front-end modules where manual handling would compromise yield or reliability.
What is the thermal resistance of UM4010CR under stud-mount conditions?
The UM4010CR exhibits a thermal resistance of 6°C/W when measured at 25°C stud temperature (Condition C). This value reflects the junction-to-stud thermal path and is critical for calculating safe operating area in continuous-wave RF applications. It is documented in the Absolute Maximum Ratings table on page 1 and validated by thousands of hours of field use in UHF phase shifters.
How does UM4010CR achieve low distortion in RF switching applications?
UM4010CR achieves low distortion through its long carrier lifetime (>5 µs) and thick intrinsic region, which enable smooth, linear RF conduction under low bias current. This reduces harmonic generation and intermodulation products-especially critical in HF–S-band switches and attenuators. The datasheet confirms this behavior via typical Rp vs. reverse bias and Rs vs. forward current graphs on pages 3–4.
Is there a RoHS-compliant version of UM4010CR?
Yes-the UMX4010CR is the RoHS-compliant version of UM4010CR, featuring a matte tin finish per EU Directive 2002/95/EC. All electrical and thermal specifications remain identical to UM4010CR. The UMX prefix designation and compliance details are stated in the DESCRIPTION section on page 1 of the Microsemi UM4000/UM4900 datasheet.
UM4010CR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- Stud
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Type:
- PIN - Single
- Voltage - Peak Reverse (Max):
- 100V
- Current - Max:
- -
- Capacitance @ Vr, F:
- 3pF @ 100V, 1MHz
- Resistance @ If, F:
- 500mOhm @ 100mA, 100MHz
- Power Dissipation (Max):
- 25 W
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
UM4010CR FAQ
1.How can I place an order for UM4010CR through Aetrix?
Please submit a Request for Quotation (RFQ) for UM4010CR 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 UM4010CR reliable?
The price and inventory of UM4010CR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UM4010CR is usually 5 days.
3.What payment methods are accepted for UM4010CR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UM4010CR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UM4010CR?
UM4010CR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UM4010CR 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 UM4010CR?
For technical support, including UM4010CR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UM4010CR requirements.
6.How does Aetrix verify that UM4010CR is sourced from the original manufacturer or authorized distributors?
All UM4010CR 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 UM4010CR meets industry standards.
7.What is the process for return or replacement of UM4010CR?
All UM4010CR units undergo pre-shipment inspection (PSI). If there is an issue with UM4010CR, 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 UM4010CR part is unused and in its original packaging.
Return procedure for UM4010CR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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