ECS-49-20-5P-TR Equivalent & Substitute Parts

Part Overview

The ECS-49-20-5P-TR is a 4.9152 MHz surface mount crystal oscillator with 20pF load capacitance and 150 Ohms equivalent series resistance (ESR), housed in an HC-49/US package. This component is classified as Not For New Designs, indicating it has reached end-of-life status. Finding equivalent or substitute parts is necessary for legacy system maintenance, repair operations, and continued production support where original inventory is depleted.

Key Parameters

Parameter	Value
Frequency	4.9152 MHz
Frequency Tolerance	±30ppm
Load Capacitance	20pF
ESR (Equivalent Series Resistance)	150 Ohms
Operating Mode	Fundamental
Operating Temperature Range	-10°C ~ 70°C
Package / Case	HC-49/US
Mounting Type	Surface Mount or Through Hole

Substitute Part Grouping Explanation

Substitution eligibility for the ECS-49-20-5P-TR is determined by the following critical parameters:

Frequency: 4.9152 MHz (exact match required)
Frequency Tolerance: ±30ppm (exact match required)
Load Capacitance: 20pF (exact match required)
ESR: 150 Ohms (exact match required)
Operating Mode: Fundamental (exact match required)
Operating Temperature Range: -10°C ~ 70°C (exact match required)
Package / Case: HC-49/US (exact match required)

Two substitute parts meet these electrical and mechanical criteria. The first substitute differs in mounting technology (through hole versus surface mount), while the second substitute maintains identical mounting characteristics but offers improved product status and compliance certifications.

Parameter Comparison

Parameter	ECS-49-20-5P-TR	ECS-49-20-5PX-TR	ECS-49-CDX-0787
Frequency	4.9152 MHz	4.9152 MHz	4.9152 MHz
Frequency Tolerance	±30ppm	±30ppm	±30ppm
Load Capacitance	20pF	20pF	20pF
ESR	150 Ohms	150 Ohms	150 Ohms
Operating Mode	Fundamental	Fundamental	Fundamental
Operating Temperature	-10°C ~ 70°C	-10°C ~ 70°C	-10°C ~ 70°C
Package / Case	HC-49/US	HC-49/US	HC-49/US
Mounting Type	Surface Mount	Surface Mount	Through Hole
Product Status	Not For New Designs	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

ECS-49-20-5PX-TR is the primary substitute for the ECS-49-20-5P-TR. Both components share identical electrical specifications, frequency characteristics, and surface mount packaging. The ECS-49-20-5PX-TR offers Active product status and ROHS3 compliance, providing superior long-term availability and regulatory alignment compared to the Not For New Designs status of the original part.

ECS-49-CDX-0787 is an alternative substitute when through-hole mounting is required or preferred. This component maintains all electrical parameters and frequency specifications but uses through-hole technology instead of surface mount. It also carries Active product status and ROHS3 compliance. Selection of this part requires PCB redesign to accommodate through-hole mounting instead of surface mount pads.

Frequently Asked Questions (FAQ)

Q: Can ECS-49-20-5PX-TR be used as a direct replacement for ECS-49-20-5P-TR?

A: Yes. Both parts share identical electrical specifications (4.9152 MHz, ±30ppm tolerance, 20pF load capacitance, 150 Ohms ESR), operating temperature range, and surface mount HC-49/US packaging. No circuit modifications are required.

Q: What is the difference between ECS-49-20-5PX-TR and ECS-49-CDX-0787?

A: The primary difference is mounting technology. ECS-49-20-5PX-TR uses surface mount technology, while ECS-49-CDX-0787 uses through-hole technology. Both maintain identical electrical parameters and frequency specifications. Selection depends on PCB design requirements.

Q: Why is the original ECS-49-20-5P-TR marked as Not For New Designs?

A: This designation indicates the part has reached end-of-life status and is no longer recommended for new product development. Existing inventory remains available for legacy system support and repair operations.

Q: Are there compliance differences between the substitute parts and the original?

A: Yes. The original ECS-49-20-5P-TR is RoHS non-compliant, while both substitute parts (ECS-49-20-5PX-TR and ECS-49-CDX-0787) are ROHS3 compliant. This provides improved regulatory alignment for applications subject to RoHS requirements.

Q: Can dimensions vary between these parts?

A: Dimensional variations exist within tolerance. ECS-49-20-5P-TR and ECS-49-20-5PX-TR share identical length and width (0.449" L x 0.189" W), while ECS-49-CDX-0787 has slightly different dimensions (0.447" L x 0.183" W). Height also differs: 0.169" for surface mount parts versus 0.138" for the through-hole part. These variations remain within HC-49/US package specifications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message