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Product Detailed Parameters
- Description：RF DIODE PIN 50V 150MW 3CP
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Bulk,Bulk
- Diode Type：PIN - 1 Pair Series Connection
- Voltage - Peak Reverse (Max)：50V
- Current - Max：50 mA
- Capacitance @ Vr, F：0.23pF @ 50V, 1MHz
- Resistance @ If, F：4.5Ohm @ 10mA, 100MHz
- Power Dissipation (Max)：150 mW
- Operating Temperature：125°C (TJ)
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：3-CP
- Grade：-
- Qualification：-
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Overview
The onsemi 1SV251-TB-E is a dual series PIN diode designed for VHF, UHF, and AGC applications. It operates with a maximum reverse voltage of 50V and a forward current rating of 50mA. The device features a typical interterminal capacitance of 0.23pF at 50V reverse bias and a maximum forward series resistance of 4.5Ω at 100MHz. Packaged in the CP (SOT-23) format, it supports high-density mounting.
Feature Summary
- Dual series configuration optimized for VHF and UHF frequency ranges
- Minimal interterminal capacitance to support high-frequency signal integrity
- Low forward series resistance for efficient RF switching performance
- Compact package design enabling high-density circuit board mounting
Applications
- Very High Frequency (VHF) circuits
- Ultra High Frequency (UHF) systems
- Automatic Gain Control (AGC) networks
Procurement Notes
Verify the specific ordering suffix TB-E corresponds to the embossed taping specification containing 3,000 pieces per reel. Confirm the CP package designation aligns with SC-59 or SOT-23 physical dimensions. Ensure the Pb Free marking matches the required environmental compliance standards for the target assembly process.
Selection Notes
Select this component when low interterminal capacitance is critical for maintaining signal fidelity in VHF and UHF bands. The dual series structure allows for balanced configurations in RF switching paths. Evaluate the 4.5Ω maximum series resistance against insertion loss requirements at 100MHz to ensure adequate performance in the intended application environment.
Part Context
This part belongs to the 1SV251 family of PIN diodes manufactured by onsemi. It utilizes a silicon planar technology suitable for general-purpose RF switching. The device is distinct from standard rectifiers due to its specific carrier lifetime control, optimizing it for variable attenuation and phase shifting rather than power conversion.
Replacement Considerations
Cross-reference pinout compatibility if substituting with other SOT-23 PIN diodes. Verify that alternative components meet the 0.23pF typical capacitance and 4.5Ω series resistance limits to maintain circuit performance without redesign.
