999-200 BK LED Holder Equivalent & Substitute Parts

Part Overview

The 999-200 BK is a T1 LED standoff holder manufactured by Bivar Inc., designed for 3mm LED applications with a 0.256" (6.50mm) standoff height. This part is constructed from black nylon material and features a two-lead configuration. The product is currently classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility with existing designs.

Key Parameters

Parameter	Value
LED Type	T1
Color	Black
Length	0.256" (6.50mm)
Material	Nylon
Lead Configuration	2-Lead
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the 999-200 BK is determined by the following critical parameters: LED type (T1), color (black), lead configuration (2-lead), and moisture sensitivity level (MSL 1). The substitute parts listed are active Bivar Inc. components from the ELM 2 and ELM 4 series that maintain these core specifications.

Substitute parts differ primarily in standoff length and material composition. The 999-200 BK uses nylon material at 0.256" (6.50mm) length. Available substitutes employ PVC material with lengths ranging from 0.245" (6.22mm) to 0.265" (6.73mm). These dimensional variations accommodate different PCB mounting requirements while preserving the T1 LED interface and two-lead electrical configuration.

The following parameters determine substitution eligibility:

LED Type: T1 (fixed requirement)
Color: Black (fixed requirement)
Lead Configuration: 2-Lead (fixed requirement)
Moisture Sensitivity Level: MSL 1 (fixed requirement)
Standoff Length: 0.245" to 0.265" (acceptable range)
Material: Nylon or PVC (both acceptable)

Parameter Comparison

Part Number	Manufacturer	LED Type	Color	Length (inches)	Length (mm)	Material	Product Status	MSL	RoHS Status
999-200 BK	Bivar Inc.	T1	Black	0.256"	6.50mm	Nylon	Obsolete	1	Not specified
ELM 2-245	Bivar Inc.	T1	Black	0.245"	6.22mm	PVC	Active	1	ROHS3 Compliant
ELM 2-255	Bivar Inc.	T1	Black	0.255"	6.48mm	PVC	Active	1	ROHS3 Compliant
ELM 2-260	Bivar Inc.	T1	Black	0.250"	6.35mm	PVC	Active	1	ROHS3 Compliant
ELM 2-265	Bivar Inc.	T1	Black	0.265"	6.73mm	PVC	Active	1	ROHS3 Compliant
ELM 2-270	Bivar Inc.	T1	Black	0.250"	6.35mm	PVC	Active	1	ROHS3 Compliant
ELM 4-245	Bivar Inc.	T1	Black	0.245"	6.22mm	PVC	Active	1	ROHS3 Compliant
ELM 4-250	Bivar Inc.	T1	Black	0.250"	6.35mm	PVC	Active	1	ROHS3 Compliant
ELM 4-255	Bivar Inc.	T1	Black	0.255"	6.48mm	PVC	Active	1	ROHS3 Compliant
ELM 4-260	Bivar Inc.	T1	Black	0.260"	6.60mm	PVC	Active	1	ROHS3 Compliant
ELM 4-265	Bivar Inc.	T1	Black	0.265"	6.73mm	PVC	Active	1	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are active products manufactured by Bivar Inc. and maintain compliance with MSL 1 moisture sensitivity requirements. The ELM 2 and ELM 4 series components are ROHS3 compliant, providing regulatory advantage over the obsolete 999-200 BK.

Selection between substitute options depends on required standoff length for specific PCB mounting applications. The 999-200 BK operates at 0.256" (6.50mm), placing it between the available substitute lengths. ELM 2-255 and ELM 4-255 provide the closest dimensional match at 0.255" (6.48mm), differing by only 0.001" (0.02mm) from the original specification.

For applications requiring exact dimensional matching to the original 0.256" (6.50mm) specification, ELM 2-265 at 0.265" (6.73mm) and ELM 4-265 at 0.265" (6.73mm) represent the nearest available alternatives, with a tolerance variance of 0.009" (0.23mm).

All substitute parts maintain the T1 LED interface, black color, two-lead configuration, and MSL 1 rating required for functional equivalence with the 999-200 BK.

Frequently Asked Questions (FAQ)

Q: Can ELM 2 and ELM 4 series parts directly replace the 999-200 BK?

A: Yes. Both series maintain the critical parameters of T1 LED type, black color, two-lead configuration, and MSL 1 moisture sensitivity. The primary difference is material composition (PVC versus nylon) and standoff length variation within the 0.245" to 0.265" range.

Q: What is the significance of the standoff length difference between 999-200 BK and substitute parts?

A: Standoff length determines the vertical distance between the PCB surface and the LED component. The 999-200 BK operates at 0.256" (6.50mm). Substitute parts range from 0.245" (6.22mm) to 0.265" (6.73mm). Selection depends on PCB design requirements and available mounting clearance. ELM 2-255 and ELM 4-255 at 0.255" (6.48mm) provide the closest dimensional alignment.

Q: Does the material change from nylon to PVC affect compatibility?

A: Both nylon and PVC materials are acceptable for T1 LED standoff applications. The material change does not affect electrical or mechanical compatibility with standard T1 LED components or PCB mounting interfaces.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All ELM 2 and ELM 4 series substitute parts listed are ROHS3 compliant. The original 999-200 BK does not specify RoHS compliance status.

Q: What packaging is available for substitute parts?

A: All substitute parts are supplied in bag packaging, consistent with standard component distribution for LED standoff holders.

Q: Which substitute part provides the closest match to the original 999-200 BK specification?

A: ELM 2-255 and ELM 4-255 provide the closest dimensional match at 0.255" (6.48mm), differing by only 0.001" (0.02mm) from the original 0.256" (6.50mm) specification.

Q: Are there inventory considerations when selecting a substitute?

A: Current inventory levels vary across substitute options. ELM 2-265 and ELM 4-250 maintain the highest inventory levels at 1026 and 1105 units respectively. All listed substitutes are in active production and available in quantity.

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