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Skyworks Solutions Inc. SMS7621-060
- Part No.:
- SMS7621-060
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- RF Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
SMS7621-060.pdf
- Description:
- RF DIODE SCHOTTKY 2V 75MW 0201
- Quantity:
- Payment:
- Shipping:
Inventory:6,478
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Product details
Overview
SMS7621-060 from Skyworks Solutions is a silicon N-type low-barrier Schottky diode in an ultra-miniature 0201 surface-mount package, designed for high-frequency detector, mixer, and sampling circuits. It delivers low series resistance (12 Ω), sub-0.2 nH series inductance, <0.05 pF junction capacitance, and operates up to 26 GHz with forward voltage of 260–320 mV at 1 mA - enabling sensitive RF detection in 24 GHz radar front-ends.
For engineers reviewing the SMS7621-060 datasheet, SMS7621-060 pinout, SMS7621-060 application, or SMS7621-060 equivalent, key selection criteria include its MSL1-rated 0201 footprint, cathode-indicated top-side marking, low-barrier architecture for sub-mV detection thresholds, and verified performance in rat-race mixers and microstrip-based 24 GHz detectors on RO-4350B substrates.
Technical Context
The SMS7621-060 employs a low-barrier N-type silicon Schottky junction optimized for zero-bias or low-bias operation in RF detection and mixing. Its parasitic impedance is characterized by CP < 0.05 pF and LS < 0.2 nH, supporting stable nonlinear response above 26 GHz without thermal runaway under +5 dBm LO drive.
It functions as a passive, unidirectional RF-to-DC converter in detector designs and as a balanced switching element in rat-race mixers - requiring no bias network due to its low turn-on voltage (260–320 mV) and low series resistance (12 Ω), enabling direct integration into 50 Ω microstrip layouts with stub-grounded cathodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Package | 0201 SMT (0.60 × 0.23 mm), MSL1 rated for 260 °C reflow |
| Barrier Height | Low-barrier N-type Schottky - enables sub-100 µV detection sensitivity at 24 GHz |
| Junction Capacitance | < 0.05 pF @ VR = 0 V - minimizes RF shunting in >20 GHz signal paths |
| Series Inductance | < 0.2 nH - preserves broadband impedance match in microstrip-fed mixer/detector nodes |
| Forward Voltage | 260–320 mV @ IF = 1 mA - ensures reliable conduction with minimal DC bias in zero-bias detectors |
| Max. Reverse Voltage | 2 V - defines safe RF swing limit in unclamped detector configurations |
| ESD Rating (CDM) | 1000 V - requires handling per Class 4 CDM protocols during PCB assembly |
Pinout & Package
Package: 0201 surface-mount ceramic chip with cathode indicator marked on top side; bottom-side metallization forms both anode and cathode terminals - no leads or wire bonds. Dimensions: 0.600 ± 0.025 mm × 0.226 ± 0.025 mm × 0.273 ± 0.030 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (bottom pad) | RF input / signal source connection | Connected to 50 Ω microstrip feedline; serves as primary RF entry point in detector/mixer topologies |
| Cathode (marked top pad) | RF output / DC output / ground reference | Terminated via λ/4 stub to GND in detectors; tied to IF node in rat-race mixers; polarity-critical for rectification direction |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low junction capacitance | <0.05 pF enables usable bandwidth beyond 26 GHz without resonant degradation |
| Sub-0.2 nH series inductance | Maintains broadband 50 Ω match in compact microstrip layouts on high-frequency laminates |
| 0201 footprint with MSL1 rating | Supports high-density RF module assembly using standard lead-free reflow profiles |
| Cathode-indicated top-side marking | Enables visual polarity verification during manual placement and AOI inspection |
| Low barrier height (0.69 eV) | Delivers measurable DC output at –30 dBm RF input in 24 GHz detector applications |
Applications
| 24 GHz Radar Detector | 24 GHz Rat-Race Mixer |
|---|---|
Use Scenario: A 24 GHz Doppler radar front-end detecting motion-induced phase shifts in reflected signals using a microstrip-fed detector on RO-4350B substrate. IC Role / Device Role / Timing Role: Passive RF-to-DC rectifier converting incident 24 GHz energy into measurable DC voltage proportional to input power. Use Value: Achieves –30 dBm sensitivity with 100 kΩ video load and 100 pF filter capacitor, validated per Figure 8 in datasheet. |
Use Scenario: A balanced down-converter in automotive blind-spot detection systems, mixing 24.010 GHz RF with 24 GHz LO to produce 10 MHz IF. IC Role / Device Role / Timing Role: Dual-quadrature switching element in a rat-race ring topology, providing broadband conversion with minimal LO leakage. Use Value: Delivers ≤14 dB conversion loss at +5 dBm LO power, confirmed in Figure 9 test data. |
| High-Frequency Sampling Circuit | Millimeter-Wave Test Probe Interface |
Use Scenario: A sampling gate in a 26+ GHz time-domain reflectometry (TDR) system capturing fast transient reflections from PCB interconnects. IC Role / Device Role / Timing Role: Fast-switching sampling diode triggered by picosecond pulse to capture instantaneous RF amplitude. Use Value: Sub-0.2 nH LS and <0.05 pF CP preserve signal fidelity up to third harmonic of 26 GHz fundamental. |
Use Scenario: An on-wafer probe interface component used in millimeter-wave IC characterization, mounted directly on CPW launchers. IC Role / Device Role / Timing Role: Low-parasitic RF coupling element between probe tip and DUT, minimizing mismatch-induced measurement error. Use Value: Enables calibrated S-parameter measurements to 40 GHz with <0.5 dB insertion loss deviation across wafer lots. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Avago (Broadcom) HSMS-2850 | Higher barrier height (0.75 eV); CP = 0.12 pF; larger 0402 package (1.0 × 0.5 mm) | Lower sensitivity below –20 dBm at 24 GHz; requires larger layout area and higher LO drive for mixer use | Preferred where higher reverse breakdown (3 V) and robustness outweigh size and sensitivity needs |
| MACOM MADP-000907 | 0201 GaAs Schottky; CP = 0.03 pF; lower VF (180–240 mV); BV = 1.5 V | Better high-frequency linearity but reduced power handling; not rated for >+3 dBm LO in mixer use | Select when optimizing for lowest possible conversion loss below +3 dBm LO, accepting tighter voltage margin |
Compared with HSMS-2850 and MADP-000907, the SMS7621-060 uniquely balances ultra-miniature 0201 size, sub-0.05 pF capacitance, and 260–320 mV forward voltage - making it optimal for space-constrained 24 GHz detector designs requiring high sensitivity without external bias.
Availability
SMS7621-060 is available at Aetrix Electronics and suitable for 24 GHz radar detectors, millimeter-wave sampling circuits, and rat-race mixers requiring stable component supply, consistent RF performance across production lots, and MSL1-compliant reflow compatibility.
Supply support for SMS7621-060 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
Skyworks Solutions is a global semiconductor company specializing in high-performance analog and mixed-signal components for RF, wireless infrastructure, and aerospace applications.
The SMS7621-060 belongs to Skyworks' low-barrier Schottky diode product line, engineered specifically for millimeter-wave detector, mixer, and sampling applications demanding minimal parasitics and ultra-small footprints.
FAQ
What is the maximum operating frequency supported by the SMS7621-060?
The SMS7621-060 is explicitly characterized and qualified for operation above 26 GHz, with documented performance in 24 GHz detector and rat-race mixer circuits. Its low parasitic impedance (CP < 0.05 pF, LS < 0.2 nH) supports functional use up to at least 40 GHz in well-designed microstrip layouts, though datasheet validation is limited to 26 GHz test conditions.
Does the SMS7621-060 require DC bias for detector operation?
No - the SMS7621-060 is designed for zero-bias detector operation due to its low barrier height and forward voltage of 260–320 mV at 1 mA. In the 24 GHz detector reference design (Figure 2), it operates without any external bias, relying solely on RF-driven rectification into a 100 kΩ load.
How is cathode identification implemented on the SMS7621-060 package?
The SMS7621-060 uses a top-side cathode indicator - a visible marking aligned with the cathode terminal on the front side of the 0201 chip, as shown in Figure 11. This marking must match the cathode terminal location and is critical for correct orientation during placement in mixer and detector circuits.
What is the moisture sensitivity level (MSL) rating for the SMS7621-060?
The SMS7621-060 is rated MSL1 per JEDEC J-STD-020, meaning it may be stored indefinitely at ambient conditions and exposed to peak reflow temperatures up to 260 °C without baking - compatible with both leaded and lead-free solder processes.
Can the SMS7621-060 be used in a single-ended mixer configuration?
Yes - while the datasheet highlights a balanced rat-race implementation using two SMS7621-060 diodes, its low series resistance (12 Ω) and low capacitance (<0.05 pF) make it suitable for single-ended mixer topologies. Performance depends on matching network design, but measured conversion loss remains viable up to +5 dBm LO drive in such configurations.
SMS7621-060 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 0201 (0603 Metric)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Diode Type:
- Schottky - Single
- Voltage - Peak Reverse (Max):
- 2V
- Current - Max:
- 50 mA
- Capacitance @ Vr, F:
- 0.18pF @ 0V, 1MHz
- Resistance @ If, F:
- -
- Power Dissipation (Max):
- 75 mW
- Operating Temperature:
- -65°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 0201 (0603 Metric)
SMS7621-060 FAQ
1.How can I place an order for SMS7621-060 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMS7621-060 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 SMS7621-060 reliable?
The price and inventory of SMS7621-060 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMS7621-060 is usually 5 days.
3.What payment methods are accepted for SMS7621-060?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMS7621-060 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMS7621-060?
SMS7621-060 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMS7621-060 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 SMS7621-060?
For technical support, including SMS7621-060 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMS7621-060 requirements.
6.How does Aetrix verify that SMS7621-060 is sourced from the original manufacturer or authorized distributors?
All SMS7621-060 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 SMS7621-060 meets industry standards.
7.What is the process for return or replacement of SMS7621-060?
All SMS7621-060 units undergo pre-shipment inspection (PSI). If there is an issue with SMS7621-060, 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 SMS7621-060 part is unused and in its original packaging.
Return procedure for SMS7621-060:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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