SA324200F35HLR Equivalent & Substitute Parts

Part Overview

The SA324200F35HLR is a 20 MHz fundamental mode crystal oscillator manufactured by CTS-Frequency Controls, designed for surface mount applications in 4-SMD, No Lead package configuration. This active product operates across the industrial temperature range of -40°C to 125°C and meets AEC-Q200 automotive qualification standards. The device features 12pF load capacitance, 60 Ohms equivalent series resistance, and ±30ppm frequency tolerance with ±50ppm stability specification.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified operating parameters. Alternative sources provide design flexibility, supply chain redundancy, and component availability optimization while preserving circuit functionality and performance characteristics.

Key Parameters

Parameter	Value	Unit
Frequency	20.0000	MHz
Frequency Tolerance	±30	ppm
Frequency Stability	±50	ppm
Load Capacitance	12	pF
Equivalent Series Resistance (ESR)	60	Ohms
Operating Mode	Fundamental	—
Operating Temperature Range	-40 to 125	°C
Package Type	4-SMD, No Lead	—
Mounting Type	Surface Mount	—
AEC-Q200 Rating	Yes	—
RoHS Compliance	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the SA324200F35HLR is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Frequency: 20.0000 MHz (exact match required)
Frequency Tolerance: ±30ppm (exact match required)
Frequency Stability: ±50ppm (exact match required)
Operating Mode: Fundamental (exact match required)
Operating Temperature Range: -40°C to 125°C (exact match required)
Package Type: 4-SMD, No Lead (exact match required)
Mounting Type: Surface Mount (exact match required)
AEC-Q200 Rating: Required for automotive applications
RoHS3 Compliance: Required for environmental standards

Secondary Compatibility Parameters:

Load Capacitance: 12pF (primary specification) or 10pF (acceptable with circuit design verification)
Equivalent Series Resistance (ESR): 60 Ohms (primary specification); variations between 50–120 Ohms are acceptable within circuit design margins
Physical Dimensions: Variations within 4-SMD, No Lead package envelope are acceptable
Packaging Format: Tape & Reel (TR) or Cut Tape (CT) formats are interchangeable for component procurement

Substitute parts are grouped based on load capacitance compatibility. Parts with 12pF load capacitance provide direct electrical equivalence. Parts with 10pF load capacitance require circuit design consideration but maintain functional compatibility within the specified frequency tolerance and stability parameters.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Frequency (MHz)	Frequency Tolerance (ppm)	Load Capacitance (pF)	ESR (Ohms)	Package	Size (mm)	Height Max (mm)	AEC-Q200	RoHS3
SA324200F35HLR	CTS-Frequency Controls	20.0000	±30	12	60	4-SMD, No Lead	3.20 x 2.50	0.80	Yes	Yes
ABM10AIG-20.000MHZ-4Z-T3	Abracon LLC	20.0000	±30	10	60	4-SMD, No Lead	2.50 x 2.00	0.65	Yes	Yes
ABM11AIG-20.000MHZ-4Z-T3	Abracon LLC	20.0000	±30	10	100	4-SMD, No Lead	2.00 x 1.60	0.55	Yes	Yes
C3E-20.000-10-3050-X1-R	Aker Technology Corp	20.0000	±30	10	50	4-SMD, No Lead	3.20 x 2.50	0.75	Yes	Yes
EB2532YA12-20.000M TR	Ecliptek	20.0000	±30	12	70	4-SMD, No Lead	3.20 x 2.50	0.80	Yes	Yes
ECS-200-10-36Q-ES-TR	ECS Inc.	20.0000	±30	10	60	4-SMD, No Lead	2.50 x 2.00	0.60	Yes	Yes
ECS-200-10-37Q-ES-TR	ECS Inc.	20.0000	±30	10	100	4-SMD, No Lead	2.00 x 1.60	0.55	Yes	Yes
FC1BACBEI20.0-T3	Fox Electronics	20.0000	±30	10	120	4-SMD, No Lead	2.00 x 1.60	0.55	Yes	Yes

Engineering Selection Recommendations

All identified substitute parts maintain active product status and full compliance with AEC-Q200 automotive qualification and ROHS3 environmental standards. Selection among substitute options is determined by specific circuit requirements and load capacitance compatibility.

Direct Electrical Equivalents (12pF Load Capacitance):

The EB2532YA12-20.000M TR manufactured by Ecliptek provides direct electrical equivalence to the SA324200F35HLR. Both devices specify 12pF load capacitance, identical frequency tolerance and stability parameters, and equivalent operating temperature range. The ESR specification of 70 Ohms for the Ecliptek device represents a 10 Ohm variance from the 60 Ohm specification of the CTS part, which remains within acceptable circuit design margins for fundamental mode crystal oscillators. Physical dimensions and package configuration are identical. This substitute requires no circuit design modification.

Functional Equivalents (10pF Load Capacitance):

The following parts specify 10pF load capacitance and require circuit design consideration:

ABM10AIG-20.000MHZ-4Z-T3 (Abracon LLC) and ECS-200-10-36Q-ES-TR (ECS Inc.) both specify 10pF load capacitance with 60 Ohms ESR, matching the ESR of the primary part. These devices maintain identical frequency, tolerance, stability, and temperature specifications. The 2pF reduction in load capacitance requires verification that the circuit design accommodates this parameter variance.

ABM11AIG-20.000MHZ-4Z-T3 (Abracon LLC), ECS-200-10-37Q-ES-TR (ECS Inc.), and FC1BACBEI20.0-T3 (Fox Electronics) specify 10pF load capacitance with ESR values of 100, 100, and 120 Ohms respectively. These higher ESR specifications require circuit design verification to confirm compatibility with oscillator circuit impedance matching and startup margin requirements.

C3E-20.000-10-3050-X1-R (Aker Technology Corp) specifies 10pF load capacitance with 50 Ohms ESR, representing the lowest ESR option among 10pF alternatives. This lower ESR may provide improved oscillator startup characteristics in circuits designed for higher impedance loads.

All substitute parts maintain identical frequency, tolerance, stability, and temperature specifications. Selection is based on load capacitance compatibility with the target circuit design and ESR requirements for oscillator circuit performance.

Frequently Asked Questions (FAQ)

Q: Can the EB2532YA12-20.000M TR be used as a direct replacement for the SA324200F35HLR?

A: Yes. The EB2532YA12-20.000M TR specifies identical 12pF load capacitance, ±30ppm frequency tolerance, ±50ppm stability, and -40°C to 125°C operating temperature range. The 70 Ohms ESR specification represents a 10 Ohm variance from the 60 Ohms specification of the SA324200F35HLR, which is within acceptable circuit design margins. No circuit modification is required.

Q: What is the difference between 12pF and 10pF load capacitance specifications?

A: Load capacitance specifies the external capacitive load at which the crystal oscillator frequency is calibrated. A 12pF load capacitance crystal is calibrated for use in circuits with 12pF total load. A 10pF load capacitance crystal is calibrated for 10pF total load. Using a 10pF crystal in a circuit designed for 12pF load will result in frequency offset. Circuit design verification is required to confirm compatibility.

Q: Are all substitute parts qualified to AEC-Q200 automotive standards?

A: Yes. All identified substitute parts carry AEC-Q200 qualification. This certification confirms compliance with automotive reliability and quality requirements across the specified operating temperature range.

Q: What is the significance of ESR (Equivalent Series Resistance) variation among substitute parts?

A: ESR affects oscillator circuit startup margin and frequency stability. The primary SA324200F35HLR specifies 60 Ohms ESR. Substitute parts range from 50 to 120 Ohms ESR. Higher ESR values may reduce startup margin in circuits with marginal design margins. Lower ESR values may improve startup characteristics. Circuit design verification is required when ESR varies by more than ±20 Ohms from the original specification.

Q: Can substitute parts with 10pF load capacitance be used in circuits designed for 12pF load capacitance?

A: Substitution of 10pF load capacitance parts in 12pF circuits requires circuit design verification. The frequency offset resulting from load capacitance mismatch must be evaluated against circuit tolerance requirements. In many applications, the frequency offset remains within acceptable tolerance bands. Engineering analysis of the specific circuit design is required.

Q: Are Tape & Reel (TR) and Cut Tape (CT) packaging formats interchangeable?

A: Yes. Tape & Reel and Cut Tape formats contain identical components and differ only in packaging and handling format. Both formats are suitable for automated assembly processes. Selection between formats is based on procurement and inventory management requirements rather than electrical or mechanical compatibility.

Q: Do all substitute parts comply with RoHS3 environmental standards?

A: Yes. All identified substitute parts carry ROHS3 compliance certification, confirming compliance with European Union Restriction of Hazardous Substances regulations.

Q: What physical dimension variations exist among substitute parts?

A: All substitute parts maintain 4-SMD, No Lead package configuration. Physical dimensions vary within the package envelope. The SA324200F35HLR and EB2532YA12-20.000M TR both specify 3.20mm x 2.50mm x 0.80mm maximum height. Smaller alternatives such as ABM11AIG-20.000MHZ-4Z-T3 specify 2.00mm x 1.60mm x 0.55mm. Smaller packages may provide board space optimization but require verification of PCB layout compatibility.

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