My Inquiry
My Account
Microchip Technology UM4010SM
- Part No.:
- UM4010SM
- Manufacturer:
- Microchip Technology
- Category:
- RF Diodes
- Package:
- SQ-MELF
- Datasheet:
-
UM4010SM.pdf
- Description:
- SI PPIN HERMETIC MELF
- Quantity:
- Payment:
- Shipping:
Inventory:5,438
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UM4010SM 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, 0.5 Ω typical series resistance at 100 MHz/100 mA, >5 µs carrier lifetime, 3 pF capacitance at 100 V/1 MHz, and surface-mount SM package. It is used in UHF phase shifters and megawatt-peak-power duplexers.
For engineers reviewing the UM4010SM datasheet, UM4010SM pinout, UM4010SM application, or UM4010SM equivalent, key selection criteria include reverse voltage capability, thermal resistance under stud- or end-cap-cooled conditions, RF power handling at 100 MHz–3 GHz, low capacitance at zero bias, and compatibility with automatic insertion equipment.
Technical Context
The UM4010SM employs a non-cavity, thick I-region structure enabling long minority-carrier lifetime (>5 µs) and high charge storage-critical for controlling high RF signal levels with low DC bias current. Its low 0.5 Ω series resistance and 3 pF capacitance at 100 V support efficient RF switching up to S-band frequencies.
Thermally, the SM package is rated for 20 W power dissipation at 25 °C end-cap temperature (θ = 7 °C/W), distinguishing it from stud-mounted variants (e.g., UM4010C/D). It is electrically equivalent to UM4910SM but differs in thermal path and power derating curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage | 1000 V - supports high-voltage RF switching without breakdown in pulsed or CW operation |
| Series Resistance | 0.5 Ω max at 100 MHz/100 mA - ensures low insertion loss in RF switch/attenuator paths |
| Capacitance | 3 pF max at 100 V/1 MHz - enables broadband matching and minimal detuning in filter/cavity networks |
| Carrier Lifetime | >5 µs - provides high Q-factor and linearity for low-distortion RF control |
| Power Dissipation | 20 W at 25 °C end-cap temperature - defines maximum continuous RF+DC power under SM-package thermal constraints |
| Forward Voltage | 1.0 V at 100 mA - determines DC bias circuit voltage headroom and power loss |
| Parallel Resistance | 10 kΩ min at 100 V/100 MHz - contributes to isolation performance in reverse-biased switch states |
Pinout & Package
UM4010SM uses a surface-mount ceramic package with two terminals: anode and cathode. The SM footprint accommodates solder fillets on both ends with ±0.005″ placement tolerance and supports adhesive-assisted mounting per Microsemi mechanical notes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive DC bias input / RF signal entry in forward conduction | Connected to bias network and RF path; requires low-inductance trace routing for HF–S-band stability |
| Cathode | DC return / RF signal exit or ground reference | Serves as common node for bias return and RF grounding; critical for minimizing parasitic loop inductance |
Key Features
| Feature | Design Value |
|---|---|
| Non-cavity construction | Eliminates resonant cavity modes that cause spurious response above 1 GHz |
| Thermally matched configuration | Ensures consistent junction temperature across multiple devices in parallel-switch arrays |
| Low capacitance at 0 V bias | Reduces off-state coupling and improves isolation in RF switch matrices |
| RoHS-compliant matte tin finish | Enables lead-free reflow assembly without intermetallic degradation or dewetting |
| Compatible with automatic insertion | Supports high-throughput SMT placement using standard pick-and-place nozzles and vision alignment |
Applications
| UHF Phase Shifters | Megawatt Peak-Power Duplexers |
|---|---|
Use Scenario: Beam-steering antenna arrays requiring precise, low-loss RF path switching across 300–1000 MHz. IC Role / Device Role / Timing Role: High-power PIN diode acting as digitally controlled RF transmission line switch in distributed phase-shifter topologies. Use Value: 1000 V reverse rating and >5 µs carrier lifetime enable stable phase control under high peak RF voltage without distortion or recovery lag. | Use Scenario: Radar transceiver front-ends handling 100 kW pulse envelopes with rapid transmit/receive switching. IC Role / Device Role / Timing Role: RF power-handling switch isolating transmitter output from receiver input during high-power pulses. Use Value: 20 W continuous dissipation and low 0.5 Ω series resistance minimize thermal drift and insertion loss during repetitive megawatt bursts. |
| Antenna Selector Networks | Coupler-Based Filter Tuning |
Use Scenario: Multi-band base station radios dynamically selecting between directional antennas via RF relay banks. IC Role / Device Role / Timing Role: Surface-mount PIN diode replacing electromechanical relays to achieve microsecond switching and extended lifetime. Use Value: SM package enables compact layout; 3 pF capacitance ensures minimal detuning when switching in/out antenna-matching inductors. | Use Scenario: Reconfigurable bandpass filters where couplers and stubs are switched into cavity resonators for frequency agility. IC Role / Device Role / Timing Role: Low-capacitance, high-isolation switch element controlling coupling coefficient in dual-mode resonator structures. Use Value: 10 kΩ parallel resistance at 100 V bias delivers >30 dB off-state isolation, preserving filter shape factor and rejection skirts. |
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 |
|---|---|---|---|
| UM4910SM | Same electrical specs; shorter thermal path yields 25 W dissipation at 25 °C stud temp (vs. UM4010SM's 20 W at end-cap temp) | Better suited for stud-cooled PCBs or heatsink-integrated modules requiring higher continuous RF power | Select UM4910SM when thermal interface allows direct stud mounting and >20 W average power is required |
| UMX4010SM | RoHS-compliant matte tin finish; identical electrical and thermal specs to UM4010SM | Required for lead-free manufacturing; no performance trade-off vs. Sn/Pb UM4010SM | Choose UMX4010SM for new designs targeting EU WEEE/RoHS compliance without redesign |
Compared with UM4010SM, UM4910SM offers higher power handling in stud-cooled configurations, while UMX4010SM provides identical RF performance with RoHS-compliant termination-enabling drop-in replacement in lead-free assembly lines without thermal or electrical compromise.
Availability
UM4010SM is available at Aetrix Electronics and suitable for UHF phase shifters, megawatt peak-power duplexers, antenna selector networks, and coupler-based filter tuning requiring stable component supply across military, aerospace, and radar production programs.
Supply support for UM4010SM 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) specializes in high-reliability analog and RF semiconductors for defense, aerospace, and communications infrastructure.
The UM4000/UM4900 series was engineered specifically for high-power RF switching in radar, EW, and satellite ground systems-emphasizing ruggedness, thermal stability, and broadband linearity.
FAQ
What is the maximum reverse voltage rating for UM4010SM?
The UM4010SM has a reverse voltage rating of 1000 V at 10 µA leakage current. This rating is verified per Microsemi's absolute maximum ratings table and supports reliable operation in high-voltage RF switching applications such as S-band duplexers and phase shifters. Exceeding this voltage risks avalanche breakdown and permanent damage to the UM4010SM junction.
Does UM4010SM require a heatsink in surface-mount applications?
Yes-UM4010SM must be mounted on a thermally conductive PCB pad or metal-core substrate to dissipate up to 20 W. Its SM package specifies 25 °C end-cap temperature as the thermal reference; without adequate copper area or thermal vias, junction temperature will exceed safe limits. Derating curves in the UM4000/UM4900 datasheet define allowable power vs. board temperature for UM4010SM.
Is UM4010SM compatible with lead-free reflow soldering?
No-the standard UM4010SM features Sn/Pb plating. For lead-free assembly, specify UMX4010SM, which uses matte tin finish compliant with JEDEC J-STD-020 and EU Directive 2002/95/EC. UMX4010SM maintains identical electrical and thermal specifications to UM4010SM and is the RoHS-compliant version of the same device.
How does UM4010SM differ from UM4010C?
UM4010SM is surface-mount packaged with end-cap thermal rating (20 W at 25 °C), while UM4010C uses a stud-mount configuration rated for 25 W at 25 °C stud temperature. Their electrical parameters are identical, but thermal management, PCB integration, and mounting method differ fundamentally. UM4010SM cannot substitute for UM4010C without revising mechanical layout and thermal interface design.
What is the typical carrier lifetime of UM4010SM and why does it matter?
The UM4010SM exhibits a carrier lifetime greater than 5 µs at 10 mA forward bias. This long lifetime enables high RF power handling with low DC control current and reduces harmonic distortion in attenuator and switch applications. It directly impacts linearity and intermodulation performance-critical in multi-tone radar and EW systems where the UM4010SM is deployed.
UM4010SM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SQ-MELF
- 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):
- 20 W
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
UM4010SM FAQ
1.How can I place an order for UM4010SM through Aetrix?
Please submit a Request for Quotation (RFQ) for UM4010SM 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 UM4010SM reliable?
The price and inventory of UM4010SM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UM4010SM is usually 5 days.
3.What payment methods are accepted for UM4010SM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UM4010SM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UM4010SM?
UM4010SM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UM4010SM 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 UM4010SM?
For technical support, including UM4010SM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UM4010SM requirements.
6.How does Aetrix verify that UM4010SM is sourced from the original manufacturer or authorized distributors?
All UM4010SM 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 UM4010SM meets industry standards.
7.What is the process for return or replacement of UM4010SM?
All UM4010SM units undergo pre-shipment inspection (PSI). If there is an issue with UM4010SM, 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 UM4010SM part is unused and in its original packaging.
Return procedure for UM4010SM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UM4010SM Tags
.jpg)
-
BAP70-02,115
NXP USA Inc.
-
SMP1321-040LF
Skyworks Solutions Inc.
-
NSVR351SDSA3T1G
onsemi
-
BAT6302VH6327XTSA1
Infineon Technologies
-
SMP1307-011LF
Skyworks Solutions Inc.
-
SMP1345-040LF
Skyworks Solutions Inc.
-
BAT1503WE6327HTSA1
Infineon Technologies
-
SMS7630-005LF
Skyworks Solutions Inc.
-
SMP1322-040LF
Skyworks Solutions Inc.
-
SMS7621-040LF
Skyworks Solutions Inc.
-
SMS7621-079LF
Skyworks Solutions Inc.
-
SMS7630-040LF
Skyworks Solutions Inc.
Tech Hub
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…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
