FNETHE025 SARONIX Crystal or Oscillator (Other) In Stock

Name: FNETHE025
Brand: SARONIX
SKU: FNETHE025
Availability: InStock

FNETHE025 is a SARONIX 25 MHz low-jitter CMOS clock oscillator optimized for Gigabit Ethernet applications, operating on a 3.3 V supply. It delivers a stable, low-phase-noise reference frequency with CMOS output levels suitable for GbE PHY and MAC clock inputs. Available from authorized distributors with competitive pricing and worldwide shipping.

ACTIVECrystal or OscillatorVerified Jun 2026

Package / Visual Reference

FNETHE025Other

Quick Facts

Manufacturer: SARONIX
Package: Other
Pin Count: 4
Lifecycle: ACTIVE
Datasheet: FNETHE025 Datasheet PDF
Category: Crystal or Oscillator
Price: From $0.6812(MOQ 1)
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of FNETHE025?

25 MHz output frequency with low phase jitter optimized for Gigabit Ethernet PHY and MAC clock requirements
3.3 V CMOS output levels ensure direct compatibility with GbE transceivers and networking SoC clock inputs without level translation
Low-jitter oscillator design meets IEEE 802.3 Ethernet reference clock specifications for reliable 1000BASE-T link performance

What is FNETHE025 used for?

FNETHE025 is designed as the reference clock source for Gigabit Ethernet PHY chips, managed switches, and network interface controllers requiring a stable 25 MHz, 3.3 V CMOS input. It is also used in embedded networking boards, industrial Ethernet gateways, and VoIP equipment where low jitter at 25 MHz is critical for maintaining GbE link stability and minimizing bit error rate on 1000BASE-T connections.

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)

Where can I find the FNETHE025 datasheet?

FNETHE025 Datasheet Download

Official datasheet from SARONIX

What are equivalent replacements for FNETHE025?

Compatible alternatives and drop-in replacements for FNETHE025:

ABS25-32.768KHZ-1-T

suggested

View Part →

Compare all alternatives & request quotes →

Frequently Asked Questions

How does FNETHE025's 25 MHz frequency and jitter specification meet Gigabit Ethernet PHY clock requirements?

FNETHE025 generates a 25 MHz reference clock with low RMS phase jitter, typically below 1 ps integrated from 12 kHz to 20 MHz, which satisfies the IEEE 802.3 Gigabit Ethernet PHY reference clock specification. The 3.3 V CMOS output drives the PHY clock input directly, and the oscillator's frequency accuracy of ±25 ppm or better ensures the synthesized 125 MHz transmit clock derived internally by the PHY stays within GbE tolerance limits.

Can FNETHE025 be used in a dual-PHY switch board with two independent 25 MHz clock inputs?

Yes, FNETHE025 can drive a dual-PHY 1000BASE-T switch board, but typically one oscillator output is shared across both PHY devices to minimize clock skew. If each PHY requires an independent 25 MHz source, two FNETHE025 units may be used, with each oscillator's 3.3 V CMOS output routed to one PHY. Total board current draw adds two oscillator supply currents, typically under 30 mA combined at 3.3 V, well within standard power budgets.

How does FNETHE025 compare to a passive 25 MHz crystal for a GbE PHY clock input?

FNETHE025 is an active oscillator that produces a buffered 3.3 V CMOS clock output ready to drive a PHY clock pin, whereas a passive 25 MHz crystal requires the PHY's internal oscillator circuitry, which may add 50–100 ps of additional jitter. FNETHE025 eliminates dependency on the PHY's integrated oscillator quality and allows the same 25 MHz clock to fan out to 2 or more loads simultaneously through simple series termination resistors without degrading jitter performance.

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AvailabilityIn Stock

Reference Price (USD)

From $0.6812

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
1+	$1.9240	$1.92
10+	$0.8650	$8.65
25+	$0.7840	$19.60
100+	$0.7514	$75.14
250+	$0.7106	$177.66
500+	$0.6812	$340.61

pcs

Unit price: $1.9240 · Total: $1.92

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”

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Hardware Lead, SensorTech GmbH, Germany