1SV249-TL-E RF Diode PIN Equivalent & Substitute Parts

Part Overview

The 1SV249-TL-E is an RF Diode PIN manufactured by onsemi, classified as a 1 Pair Series Connection PIN diode rated for 50V peak reverse voltage with 100 mW power dissipation in a 3-MCP package. This component is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Substiute Parts

1SV249-TL-E

onsemiIn Stock: 9851SV249-TL-E Datasheet

Current PartRFQ

1SV251-TB-E

onsemiIn Stock: 302831SV251-TB-E Datasheet

SimilarRFQ

1SV264-TL-E

onsemiIn Stock: 15611SV264-TL-E Datasheet

Parametric EquivalentRFQ

RN739FT106

Rohm SemiconductorIn Stock: 3319RN739FT106 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 1SV249-TL-E is determined by the following critical parameters:

• Diode Type: PIN - 1 Pair Series Connection configuration
• Voltage Rating: 50V peak reverse voltage
• Current Rating: 50 mA maximum
• Power Dissipation: 100 mW or higher
• Package Compatibility: SC-70 / SOT-323 form factor
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

Parts meeting these electrical and mechanical specifications are classified as direct substitutes. The 1SV251-TB-E offers higher power dissipation (150 mW) with identical electrical ratings but different packaging. The 1SV264-TL-E and RN739FT106 provide parametric equivalence with active product status and identical power ratings.

Parameter Comparison

Engineering Selection Recommendations

For new designs and procurement, the 1SV264-TL-E is the preferred substitute. This onsemi part maintains identical electrical specifications to the 1SV249-TL-E, shares the same SC-70/SOT-323 package footprint, and carries active product status with full ROHS3 compliance and REACH unaffected certification.

The RN739FT106 from Rohm Semiconductor provides an alternative parametric equivalent with active status. While it maintains the 50V/50mA/100mW core specifications and SC-70/SOT-323 packaging, the higher resistance value (7Ohm vs 4.5Ohm) and different capacitance measurement conditions (0.4pF @ 35V vs 0.23pF @ 50V) require circuit-level evaluation for RF applications.

The 1SV251-TB-E offers higher power dissipation (150 mW) but uses different packaging (TO-236-3/SC-59/SOT-23-3), requiring PCB layout modifications. This part is also obsolete.

Frequently Asked Questions (FAQ)

Q: Can the 1SV264-TL-E directly replace the 1SV249-TL-E?

A: Yes. Both parts share identical voltage (50V), current (50 mA), and power dissipation (100 mW) ratings. Both use SC-70/SOT-323 packaging and are ROHS3 compliant. The 1SV264-TL-E has active product status, making it the recommended direct replacement.

Q: What is the difference between the 1SV249-TL-E and 1SV251-TB-E?

A: The primary difference is power dissipation: 100 mW vs 150 mW. The 1SV251-TB-E uses different packaging (TO-236-3/SC-59/SOT-23-3) compared to the SC-70/SOT-323 of the 1SV249-TL-E. Both are obsolete products.

Q: Is the RN739FT106 suitable for RF applications requiring the 1SV249-TL-E specifications?

A: The RN739FT106 meets the core voltage, current, and power dissipation requirements. However, the resistance specification differs (7Ohm vs 4.5Ohm), and capacitance is measured at different conditions. Circuit performance must be evaluated for RF-specific applications before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The 1SV251-TB-E, 1SV264-TL-E, and RN739FT106 are all ROHS3 compliant and REACH unaffected, matching the regulatory status of the 1SV249-TL-E.

Q: Which substitute has the best long-term availability?

A: The 1SV264-TL-E and RN739FT106 both carry active product status, ensuring ongoing availability. The 1SV251-TB-E is obsolete and should not be selected for new designs.