H-303C-1-180

Part Overview

The H-303C-1-180 is a T1 LED Standoff in black nylon with a length of 0.495" (12.57mm), designed for 3MM 2-lead LED applications. This part is classified as Obsolete, necessitating the identification of active alternative models that maintain functional equivalence within specified electrical and mechanical tolerances.

Key Parameters

Parameter	Value
Manufacturer	Bivar Inc.
LED Type	T1
Color	Black
Length	0.495" (12.57mm)
Material	Nylon
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Obsolete
ECCN Classification	EAR99

Substitute Part Grouping Explanation

Substitute parts for the H-303C-1-180 are grouped based on the following critical parameters: LED type (T1), color (black), orientation compatibility, and length tolerance. The primary substitutes fall into two categories:

Category 1 - Similar Manufacturer Part (Direct Length Match): The H-203C maintains identical functional specifications with equivalent length (0.380" vs. 0.495") but represents a different mounting configuration. This part is currently in Active status with ROHS3 compliance.

Category 2 - Parametric Equivalents (ELM 2 Series - PVC Material): The ELM 2 series parts (ELM 2-475, ELM 2-480, ELM 2-485, ELM 2-490, ELM 2-495, ELM 2-500, ELM 2-505, ELM 2-510) maintain T1 LED compatibility and black color specification. Length variations within the ELM 2 series range from 0.475" (12.07mm) to 0.510" (12.95mm), encompassing the original 0.495" (12.57mm) dimension. These parts utilize PVC material instead of nylon but maintain equivalent MSL rating and ECCN classification.

Category 3 - Parametric Equivalent (ELM 2-13MM): The ELM 2-13MM provides parametric equivalence with length 0.510" (12.95mm), representing the closest metric specification match.

Parameter Comparison

Part Number	Manufacturer	LED Type	Color	Length	Material	MSL	Product Status	RoHS Status
H-303C-1-180	Bivar Inc.	T1	Black	0.495" (12.57mm)	Nylon	1	Obsolete	Vendor Undefined
H-203C	Bivar Inc.	T1	Black	0.380" (9.65mm)	Nylon	1	Active	ROHS3 Compliant
ELM 2-13MM	Bivar Inc.	T1	Black	0.510" (12.95mm)	PVC	1	Active	ROHS3 Compliant
ELM 2-475	Bivar Inc.	T1	Black	0.475" (12.07mm)	PVC	1	Active	ROHS3 Compliant
ELM 2-480	Bivar Inc.	T1	Black	0.480" (12.19mm)	PVC	1	Active	ROHS3 Compliant
ELM 2-485	Bivar Inc.	T1	Black	0.485" (12.32mm)	PVC	1	Active	ROHS3 Compliant
ELM 2-490	Bivar Inc.	T1	Black	0.490" (12.45mm)	PVC	1	Active	ROHS3 Compliant
ELM 2-495	Bivar Inc.	T1	Black	0.495" (12.57mm)	PVC	1	Active	ROHS3 Compliant
ELM 2-500	Bivar Inc.	T1	Black	0.500" (12.70mm)	PVC	1	Active	ROHS3 Compliant
ELM 2-505	Bivar Inc.	T1	Black	0.505" (12.83mm)	PVC	1	Active	ROHS3 Compliant
ELM 2-510	Bivar Inc.	T1	Black	0.510" (12.95mm)	PVC	1	Active	ROHS3 Compliant

Engineering Selection Recommendations

For applications requiring replacement of the obsolete H-303C-1-180, the ELM 2-495 is the primary selection criterion. This part maintains exact length specification (0.495" / 12.57mm), identical LED type (T1), color (black), and equivalent MSL rating (1 - Unlimited). The ELM 2-495 holds Active product status with ROHS3 compliance, ensuring long-term availability and regulatory conformance.

Alternative selections from the ELM 2 series (ELM 2-490, ELM 2-500, ELM 2-505, ELM 2-510) are permissible when length tolerance within ±0.015" is acceptable. These alternatives provide equivalent electrical and mechanical function with enhanced regulatory status through ROHS3 compliance.

The H-203C offers nylon material matching the original specification but with reduced length (0.380" vs. 0.495"), making it suitable only where shorter standoff height is required.

Material substitution from nylon to PVC (ELM 2 series) is permissible as both materials maintain identical MSL and electrical characteristics within this product category.

Frequently Asked Questions (FAQ)

Q: Can ELM 2 series parts substitute for H-303C-1-180 despite material difference (PVC vs. Nylon)? A: Yes. Both materials achieve identical Moisture Sensitivity Level (1 - Unlimited) and maintain equivalent electrical characteristics for T1 LED applications. Material selection is based on mechanical and environmental requirements specific to application conditions.

Q: Which substitute part provides the closest length match? A: The ELM 2-495 provides exact length equivalence at 0.495" (12.57mm), matching the original H-303C-1-180 specification precisely.

Q: What length tolerance exists across available substitutes? A: Active substitute parts span lengths from 0.475" (12.07mm) to 0.510" (12.95mm), a range of ±0.035" around the original 0.495" specification. Selection within this range depends on application-specific height clearance requirements.

Q: Does the H-203C represent a suitable substitute? A: The H-203C maintains nylon material and T1 LED compatibility but provides reduced length (0.380" vs. 0.495"). It is suitable only when shorter standoff height is functionally acceptable.

Q: What is the regulatory advantage of ELM 2 series parts? A: All ELM 2 series substitutes carry ROHS3 compliance designation, whereas the original H-303C-1-180 shows "Vendor Undefined" REACH status. This provides regulatory assurance for new designs and long-term supply chain stability.

Q: Are all substitute parts in Active product status? A: Yes. All recommended substitutes (H-203C and ELM 2 series) maintain Active product status, ensuring availability and continuity of supply.

Q: What inventory levels support part selection? A: ELM 2-500 provides the highest inventory (4519 Pcs), followed by ELM 2-510 (1846 Pcs) and H-203C (920 Pcs). ELM 2-495 (738 Pcs) maintains the exact length specification with adequate stock levels.

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