H-303C-1-160 LED Holder T1 Equivalent & Substitute Parts

Part Overview

The H-303C-1-160 is a T1 LED standoff holder manufactured by Bivar Inc., designed for right-angle mounting of 3mm LEDs. This part features black nylon construction with a 0.475" (12.07mm) length and dual-lead configuration. The H-303C-1-160 is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design and procurement requirements. Substitute parts must maintain compatibility with T1 LED form factors while accommodating variations in material composition, length specifications, and mechanical mounting characteristics.

Key Parameters

Parameter	Value
Manufacturer Part Number	H-303C-1-160
Manufacturer	Bivar Inc.
LED Type	T1
Material	Nylon
Color	Black
Length	0.475" (12.07mm)
Configuration	Right-Angle, 2-Lead
Product Status	Obsolete
Moisture Sensitivity Level	1 (Unlimited)
ECCN	EAR99

Substitute Part Grouping Explanation

Substitution eligibility for the H-303C-1-160 is determined by the following critical parameters:

Primary Compatibility Criteria:

LED Type: T1 (fixed requirement)
Configuration: Right-angle, 2-lead mounting
Color: Black
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Variation Parameters:

Material: Nylon (primary) or PVC (acceptable alternative)
Length: 0.475" ± tolerance range (0.455" to 0.490" acceptable)
Product Status: Active preferred; obsolete acceptable only if no active alternatives exist

Substitute parts are grouped into two categories:

Category 1 - Similar Series (H-203C): Active product from the same H-series family with identical material (nylon) and configuration but shorter length (0.380").

Category 2 - Parametric Equivalents (ELM 2 Series): Active products with T1 LED compatibility, right-angle configuration, and comparable length specifications. Material differs (PVC instead of nylon) but maintains equivalent mechanical and electrical performance within the T1 LED holder category.

Parameter Comparison

Part Number	Manufacturer	LED Type	Material	Length (inches)	Length (mm)	Color	Product Status	MSL	RoHS Status
H-303C-1-160	Bivar Inc.	T1	Nylon	0.475"	12.07	Black	Obsolete	1	Vendor Undefined
H-203C	Bivar Inc.	T1	Nylon	0.380"	9.65	Black	Active	1	ROHS3 Compliant
ELM 2-12MM	Bivar Inc.	T1	PVC	0.470"	11.94	Black	Active	1	ROHS3 Compliant
ELM 2-455	Bivar Inc.	T1	PVC	0.455"	11.56	Black	Active	1	ROHS3 Compliant
ELM 2-460	Bivar Inc.	T1	PVC	0.460"	11.68	Black	Active	1	ROHS3 Compliant
ELM 2-465	Bivar Inc.	T1	PVC	0.465"	11.81	Black	Active	1	ROHS3 Compliant
ELM 2-470	Bivar Inc.	T1	PVC	0.470"	11.94	Black	Active	1	ROHS3 Compliant
ELM 2-475	Bivar Inc.	T1	PVC	0.475"	12.07	Black	Active	1	ROHS3 Compliant
ELM 2-480	Bivar Inc.	T1	PVC	0.480"	12.19	Black	Active	1	ROHS3 Compliant
ELM 2-485	Bivar Inc.	T1	PVC	0.485"	12.32	Black	Active	1	ROHS3 Compliant
ELM 2-490	Bivar Inc.	T1	PVC	0.490"	12.45	Black	Active	1	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: ELM 2-475

The ELM 2-475 is the optimal substitute for the H-303C-1-160. This part maintains exact length equivalence (0.475" / 12.07mm), identical T1 LED compatibility, and black color specification. The ELM 2-475 is active product status with ROHS3 compliance certification, ensuring long-term availability and regulatory alignment. Material composition differs (PVC vs. nylon), but both materials satisfy MSL 1 requirements and provide equivalent mechanical performance for T1 LED standoff applications. Current inventory of 914 units supports immediate procurement.

Secondary Recommendations:

ELM 2-470 and ELM 2-480 provide length alternatives within ±0.005" of the original specification. Both are active products with ROHS3 compliance and adequate inventory levels (1012 and 1072 units respectively).

ELM 2-465, ELM 2-485, and ELM 2-490 accommodate designs with length flexibility within ±0.015" tolerance. All maintain T1 LED compatibility and active product status.

Alternative for Nylon Material Requirement:

H-203C preserves nylon material composition and active product status but features reduced length (0.380" vs. 0.475"). This part is suitable only for applications where material specification supersedes length requirements. ROHS3 compliance and 920-unit inventory support procurement viability.

Compliance Considerations:

All recommended ELM 2 series substitutes carry ROHS3 Compliant certification, whereas the original H-303C-1-160 lists vendor-undefined ROHS status. Designs subject to ROHS compliance mandates benefit from ELM 2 series selection.

Frequently Asked Questions (FAQ)

Q1: Can ELM 2-475 directly replace H-303C-1-160 in existing designs?

A: Yes. ELM 2-475 maintains identical length (0.475" / 12.07mm), T1 LED type, right-angle configuration, and black color. The material change from nylon to PVC does not affect mechanical or electrical performance for T1 LED standoff applications. Both materials satisfy MSL 1 requirements.

Q2: What is the significance of the length variations in the ELM 2 series?

A: Length variations (0.455" to 0.490") accommodate different PCB-to-LED standoff distances. Selection depends on specific board layout requirements. ELM 2-475 matches the original 0.475" specification exactly. Shorter options (ELM 2-455, ELM 2-460, ELM 2-465) reduce standoff height; longer options (ELM 2-480, ELM 2-485, ELM 2-490) increase standoff height.

Q3: Why is H-203C not the primary recommendation despite matching material?

A: H-203C length (0.380") differs significantly from the original specification (0.475"), representing a 0.095" reduction. This length difference affects LED positioning relative to the PCB and may require design modification. ELM 2-475 eliminates this compatibility concern through exact length matching.

Q4: Are there electrical performance differences between nylon and PVC materials in these holders?

A: No. Both nylon and PVC materials in T1 LED holder applications provide equivalent electrical insulation and mechanical support. Material selection does not affect electrical performance for LED standoff functions.

Q5: What does MSL 1 (Unlimited) mean for these parts?

A: MSL 1 indicates the lowest moisture sensitivity level, meaning these parts have unlimited shelf life and require no special moisture-controlled storage conditions. All recommended substitutes maintain MSL 1 classification.

Q6: How does ROHS3 compliance affect substitute selection?

A: ROHS3 Compliant status indicates the part meets Restriction of Hazardous Substances Directive requirements. All ELM 2 series substitutes carry ROHS3 certification. The original H-303C-1-160 lists vendor-undefined ROHS status. For designs subject to ROHS compliance mandates, ELM 2 series parts provide regulatory assurance.

Q7: What inventory considerations apply to substitute selection?

A: All recommended substitutes maintain adequate inventory levels (677 to 1112 units). ELM 2-475 (914 units) and ELM 2-470 (1012 units) offer optimal availability. H-203C provides 920 units if nylon material is mandatory.

Q8: Can multiple ELM 2 series parts be used interchangeably within a single design?

A: No. Each part number specifies a fixed length. Interchangeability within a design requires identical part numbers or explicit design approval for length variation. Length differences affect LED positioning and may impact optical performance.

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