MMVL809T1G Equivalent & Substitute Parts

Part Overview

The MMVL809T1G is a single varactor diode manufactured by onsemi, designed for 20V peak reverse voltage applications in surface mount SOD-323 packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The part functions as a voltage-variable capacitance element suitable for RF and microwave circuit tuning applications.

Substiute Parts

MMVL809T1G

onsemiIn Stock: 1106MMVL809T1G Datasheet

Current PartRFQ

SMV1234-011LF

Skyworks Solutions Inc.In Stock: 4303SMV1234-011LF Datasheet

SimilarRFQ

SMV1236-011LF

Skyworks Solutions Inc.In Stock: 3368SMV1236-011LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MMVL809T1G is determined by the following critical parameters:

• Package compatibility: SOD-323 surface mount package
• Diode configuration: Single varactor element
• Mounting type: Surface mount
• Electrical operating range: Peak reverse voltage and capacitance characteristics within acceptable tolerance for the application circuit

The identified substitute parts (SMV1234-011LF and SMV1236-011LF) share the same physical package (SOD-323) and mounting type. Both are manufactured by Skyworks Solutions Inc. and maintain active product status. However, the substitute parts operate at a maximum peak reverse voltage of 15V, which is lower than the original 20V specification. This represents a voltage derating that must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

Both SMV1234-011LF and SMV1236-011LF are active products from Skyworks Solutions Inc., providing long-term availability compared to the obsolete MMVL809T1G. Both substitute parts are RoHS3 compliant and REACH unaffected, meeting current regulatory requirements.

The primary design consideration is the reduced peak reverse voltage rating (15V versus 20V). Applications operating at or near the 20V maximum rating of the original part require circuit-level evaluation to confirm that the 15V substitute parts remain within acceptable operating margins.

The substitute parts exhibit different capacitance characteristics and measurement conditions compared to the original part. SMV1236-011LF provides capacitance closer to the original specification (5.3pF versus 6.1pF), while SMV1234-011LF offers lower capacitance (2pF). Selection between the two substitutes depends on the specific capacitance requirement of the application circuit.

Frequently Asked Questions (FAQ)

Q: Can SMV1234-011LF and SMV1236-011LF be used interchangeably with MMVL809T1G?

A: Both parts share the same SOD-323 package and surface mount configuration. However, the 15V peak reverse voltage rating represents a 5V reduction from the original 20V specification. Interchangeability depends on the circuit's actual operating voltage and design margins. The capacitance values also differ, requiring circuit validation.

Q: What is the difference between SMV1234-011LF and SMV1236-011LF?

A: Both are Skyworks varactor diodes in SOD-323 packaging with identical voltage ratings (15V maximum). The primary difference is capacitance: SMV1236-011LF provides 5.3pF at 6V (closer to the original part's 6.1pF), while SMV1234-011LF provides 2pF at 6V. Selection depends on the specific capacitance requirement of your application.

Q: Are the substitute parts available in the same packaging format?

A: Yes. All three parts use SOD-323 surface mount packaging. The Skyworks substitutes are supplied in Tape & Reel (TR) format, which is standard for production quantities.

Q: What compliance certifications apply to the substitute parts?

A: Both SMV1234-011LF and SMV1236-011LF are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: Why is the operating temperature range different?

A: The original MMVL809T1G specifies a maximum junction temperature of 150°C, while the Skyworks substitutes specify an operating range of -55°C to 125°C. This represents a different specification methodology rather than a functional limitation for most applications operating within standard temperature ranges.