SI4136-F-BT Equivalent & Substitute Parts

Part Overview

The SI4136-F-BT is a Frequency Synthesizer IC manufactured by Skyworks Solutions Inc., designed for clock/timing applications with a maximum frequency of 2.5GHz. The device operates with a 1:3 input-to-output ratio and is housed in a 24-TSSOP package. This part is currently listed as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	SI4136-F-BT
Manufacturer	Skyworks Solutions Inc.
Type	Frequency Synthesizer
PLL	Yes
Input	Crystal
Output	Clock
Number of Circuits	1
Ratio - Input:Output	1:3
Frequency - Max	2.5GHz
Voltage - Supply	2.7V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Package / Case	24-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the SI4136-F-BT are identified based on the following critical parameters that determine functional compatibility:

Common Parameters Across All Substitutes:

Manufacturer: Skyworks Solutions Inc.
Type: Frequency Synthesizer with PLL
Input: Crystal
Output: Clock
Number of Circuits: 1
Package / Case: 24-TSSOP (0.173", 4.40mm Width)
Mounting Type: Surface Mount
Voltage - Supply: 2.7V ~ 3.6V
Operating Temperature: -40°C ~ 85°C
Moisture Sensitivity Level (MSL): 3 (168 Hours)

Variable Parameters (Determine Substitution Suitability):

Ratio - Input:Output
Frequency - Max
Product Status

The SI4136-F-BT operates at 2.5GHz with a 1:3 input-to-output ratio. Substitute parts are grouped by their frequency capability and ratio configuration. Parts with lower maximum frequencies or different ratios may be suitable depending on application requirements and frequency headroom needs.

Parameter Comparison

Parameter	SI4136-F-BT	SI4112-D-GT	SI4113-D-GT	SI4122-D-GT	SI4123-D-GT	SI4133-D-GT
Ratio - Input:Output	1:3	1:1	1:2	1:2	1:2	1:3
Frequency - Max	2.5GHz	1GHz	1.8GHz	1.5GHz	1.8GHz	1.8GHz
Voltage - Supply	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V	2.7V ~ 3.6V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	24-TSSOP	24-TSSOP	24-TSSOP	24-TSSOP	24-TSSOP	24-TSSOP
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Not specified	Not specified	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

SI4133-D-GT is the primary substitute for SI4136-F-BT. Both devices share the identical 1:3 input-to-output ratio. The SI4133-D-GT operates at a maximum frequency of 1.8GHz, which is lower than the SI4136-F-BT's 2.5GHz specification. This part is currently in active production status and is ROHS3 compliant, providing improved environmental compliance compared to the obsolete SI4136-F-BT.

SI4113-D-GT and SI4123-D-GT are functionally equivalent alternatives with a 1:2 input-to-output ratio and 1.8GHz maximum frequency. These parts are suitable for applications where the 1:2 ratio meets system requirements and frequency headroom is adequate.

SI4122-D-GT operates at 1.5GHz with a 1:2 ratio and is suitable for lower-frequency applications requiring the 1:2 configuration.

SI4112-D-GT operates at 1GHz with a 1:1 ratio and is applicable only to applications with significantly lower frequency requirements and a 1:1 input-to-output ratio.

All substitute parts maintain identical supply voltage range (2.7V ~ 3.6V), operating temperature range (-40°C ~ 85°C), package configuration (24-TSSOP), and moisture sensitivity level (MSL 3).

Frequently Asked Questions (FAQ)

Q: Can SI4133-D-GT directly replace SI4136-F-BT?

A: SI4133-D-GT shares the same 1:3 input-to-output ratio as SI4136-F-BT and operates within the same supply voltage and temperature ranges. The maximum frequency is 1.8GHz versus 2.5GHz for the original part. Substitution is valid if system frequency requirements do not exceed 1.8GHz.

Q: What is the primary difference between SI4136-F-BT and SI4133-D-GT?

A: The primary difference is maximum frequency capability (2.5GHz versus 1.8GHz) and product status (obsolete versus active). Both maintain identical input-to-output ratio (1:3), package type (24-TSSOP), and electrical specifications.

Q: Are all substitute parts pin-compatible with SI4136-F-BT?

A: All substitute parts use the 24-TSSOP package with identical physical dimensions (0.173", 4.40mm Width). Pin compatibility must be verified against specific application schematics and PCB layouts, as internal circuit configurations may differ.

Q: Can I use SI4112-D-GT as a substitute?

A: SI4112-D-GT has a different input-to-output ratio (1:1 versus 1:3) and lower maximum frequency (1GHz). This part is suitable only for applications with fundamentally different frequency and ratio requirements.

Q: What is the significance of RoHS compliance for substitute selection?

A: SI4133-D-GT and SI4112-D-GT are ROHS3 compliant, while SI4136-F-BT is RoHS non-compliant. For new designs or systems with environmental compliance requirements, ROHS3 compliant alternatives are preferred.

Q: Do all substitute parts have the same moisture sensitivity level?

A: Yes, all substitute parts and the original SI4136-F-BT share MSL 3 (168 Hours) moisture sensitivity level, indicating identical handling and storage requirements.

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