OPF693-1 Equivalent & Substitute Parts

Part Overview

The OPF693-1 is a fiber optic transmitter operating at 850nm wavelength, manufactured by TT Electronics/Optek Technology. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing system support and new designs. The OPF693-1 features a maximum forward voltage of 2.1V and supports 100mA DC forward current with ST connector interface. Due to its obsolete status, substitute parts with compatible electrical and mechanical specifications are required for procurement and system continuity.

Key Parameters

Parameter	OPF693-1 Specification
Wavelength	850nm
Voltage - Forward (Vf) (Max)	2.1V
Current - DC Forward (If) (Max)	100mA
Voltage - DC Reverse (Vr) (Max)	1V
Connector Type	ST
Spectral Bandwidth	35nm
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the OPF693-1 is determined by the following critical parameters: wavelength, forward current rating, connector type, and reverse voltage tolerance. The OPF693-1 operates at 850nm with a maximum forward voltage of 2.1V and 100mA current capacity.

Two substitute parts are identified:

OPF693-2 (TT Electronics/Optek Technology): Maintains identical wavelength (850nm), current rating (100mA), and connector type (ST). Forward voltage is reduced to 1.8V, and reverse voltage remains at 1V. This part is the direct active successor within the same product family.

HFBR-1414TZ (Broadcom Limited): Operates at 820nm wavelength with 100mA current capacity and ST connector interface. Forward voltage is 1.7V with reverse voltage tolerance of 1.8V. The wavelength deviation of 30nm from the OPF693-1 specification represents a near-infrared alternative within the same functional category.

Parameter Comparison

Parameter	OPF693-1	OPF693-2	HFBR-1414TZ
Manufacturer	TT Electronics/Optek Technology	TT Electronics/Optek Technology	Broadcom Limited
Wavelength	850nm	850nm	820nm
Spectral Bandwidth	35nm	Not specified	Not specified
Voltage - Forward (Vf) (Typ)	2.1V (Max)	1.8V	1.7V
Current - DC Forward (If) (Max)	100mA	100mA	100mA
Voltage - DC Reverse (Vr) (Max)	1V	1V	1.8V
Connector Type	ST	ST	ST
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging	Not specified	Tray	Tube

Engineering Selection Recommendations

OPF693-2 is the primary substitute for OPF693-1 replacement. Both parts are manufactured by TT Electronics/Optek Technology, operate at identical 850nm wavelength, support 100mA forward current, and feature ST connectors. The OPF693-2 is active in production status with ROHS3 compliance and unlimited moisture sensitivity rating. Forward voltage is reduced from 2.1V to 1.8V, representing improved efficiency characteristics. This part maintains full compatibility with existing OPF693 series system designs.

HFBR-1414TZ serves as an alternative substitute when OPF693-2 availability is constrained. Manufactured by Broadcom Limited, this part operates at 820nm wavelength with 100mA current capacity and ST connector interface. The 30nm wavelength difference from OPF693-1 requires system-level optical compatibility assessment. Forward voltage of 1.7V and enhanced reverse voltage tolerance of 1.8V provide operational flexibility. HFBR-1414TZ maintains active production status with ROHS3 compliance and unlimited moisture sensitivity rating.

Both substitute parts satisfy the core electrical parameters (100mA forward current, ST connector, ROHS3 compliance, MSL-1 rating) required for functional equivalence to the obsolete OPF693-1.

Frequently Asked Questions (FAQ)

Q: Can OPF693-2 directly replace OPF693-1 in existing designs?

A: OPF693-2 maintains identical wavelength (850nm), forward current (100mA), and connector type (ST) as OPF693-1. The forward voltage reduction from 2.1V to 1.8V represents improved performance. Direct substitution is supported for applications where the OPF693 series is specified.

Q: What is the significance of the 30nm wavelength difference between OPF693-1 and HFBR-1414TZ?

A: OPF693-1 operates at 850nm while HFBR-1414TZ operates at 820nm. Both wavelengths fall within the near-infrared spectrum used for fiber optic communications. System-level optical compatibility must be assessed, including receiver photodiode spectral response and fiber attenuation characteristics at each wavelength.

Q: Are packaging differences between OPF693-2 (Tray) and HFBR-1414TZ (Tube) significant?

A: Packaging format affects handling, storage, and automated assembly processes. Tray packaging is suitable for pick-and-place equipment, while tube packaging requires different feeder configurations. Selection depends on manufacturing process requirements and inventory management practices.

Q: Do all substitute parts meet the same compliance standards as OPF693-1?

A: Yes. OPF693-2 and HFBR-1414TZ are both ROHS3 compliant, REACH unaffected, and classified as MSL-1 (unlimited moisture sensitivity). Both parts maintain equivalent environmental and regulatory compliance to OPF693-1.

Q: What is the reverse voltage tolerance difference between OPF693-1 and HFBR-1414TZ?

A: OPF693-1 specifies 1V maximum reverse voltage, while HFBR-1414TZ specifies 1.8V maximum reverse voltage. The HFBR-1414TZ provides enhanced reverse voltage tolerance, which may be advantageous in applications with transient voltage conditions.

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