LTL2H3HRKL13 Equivalent & Substitute Parts

Part Overview

The LTL2H3HRKL13 is a red LED indicator from Lite-On Inc., designed for through-hole mounting applications. This T-1 3/4 (5mm) radial LED operates at 2.2V forward voltage with a 12000mcd brightness rating and 15° viewing angle. The component is ROHS3 compliant and currently in active production status with 1065 units in stock.

Substitute parts are necessary when the primary part becomes unavailable, when alternative brightness levels are required for specific circuit designs, or when different forward voltage characteristics better match system requirements.

Key Parameters

Parameter	LTL2H3HRKL13
Color	Red
Wavelength - Dominant	625nm
Lens Size	5mm, T-1 3/4
Lens Style	Round with Domed Top
Lens Transparency	Clear
Voltage - Forward (Vf) (Typ)	2.2V
Current - Test	20mA
Millicandela Rating	12000mcd
Viewing Angle	15°
Mounting Type	Through Hole
Package / Case	Radial
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Color and Wavelength: All substitutes must be red LEDs with dominant wavelength in the 623–626nm range
Lens Size and Style: All substitutes must maintain 5mm T-1 3/4 form factor with round domed top lens
Mounting Type: All substitutes must be through-hole radial configuration
Lens Transparency: All substitutes must have clear lens
Current Rating: All substitutes must operate at 20mA test current
Compliance: All substitutes must be ROHS3 compliant

Substitutes are grouped into two categories:

Parametric Equivalent: LTL2H3EZ1K maintains the same base product number (LTL2H3) with minimal forward voltage variation (2.0V vs 2.2V) and identical brightness rating.

Manufacturer Recommended: Broadcom Limited HLMP-EG series and Würth Elektronik 151053RS03000 provide functional equivalence with forward voltage of 1.9V. These parts differ in brightness ratings (1690–18150mcd) and viewing angles (8–30°), allowing selection based on circuit requirements.

Parameter Comparison

Part Number	Manufacturer	Vf (Typ)	Millicandela Rating	Viewing Angle	Height (Max)	Wavelength - Dominant	Inventory
LTL2H3HRKL13	Lite-On Inc.	2.2V	12000mcd	15°	8.70mm	625nm	1065 Pcs
LTL2H3EZ1K	LITEON	2.0V	12000mcd	15°	9.10mm	625nm	2200 Pcs
151053RS03000	Würth Elektronik	1.9V	5000mcd	30°	8.85mm	623nm	3100 Pcs
HLMP-EG08-WZ000	Broadcom Limited	1.9V	10750mcd	8°	8.91mm	626nm	1461 Pcs
HLMP-EG08-X1000	Broadcom Limited	1.9V	14100mcd	8°	8.91mm	626nm	13676 Pcs
HLMP-EG08-Y2000	Broadcom Limited	1.9V	18150mcd	8°	8.91mm	626nm	18832 Pcs
HLMP-EG08-YZ000	Broadcom Limited	1.9V	12650mcd	8°	8.91mm	626nm	19205 Pcs
HLMP-EG10-WZ000	Broadcom Limited	1.9V	10750mcd	8°	12.62mm	626nm	18716 Pcs
HLMP-EG15-PS000	Broadcom Limited	1.9V	1690mcd	15°	8.91mm	626nm	13100 Pcs
HLMP-EG15-RU000	Broadcom Limited	1.9V	2850mcd	15°	8.91mm	626nm	18500 Pcs
HLMP-EG15-UX000	Broadcom Limited	1.9V	6250mcd	15°	8.91mm	626nm	3304 Pcs

Engineering Selection Recommendations

LTL2H3EZ1K is the closest parametric equivalent, maintaining identical brightness (12000mcd) and viewing angle (15°) with only 0.2V lower forward voltage. Both parts share the LTL2H3 base product number and ROHS3 compliance. This substitute is suitable for direct replacement in applications where forward voltage tolerance permits operation at 2.0V.

HLMP-EG15 series (PS000, RU000, UX000) from Broadcom Limited provides 15° viewing angle matching the original part. These operate at 1.9V forward voltage with brightness ratings from 1690–6250mcd. Selection within this series depends on required luminous intensity. All are ROHS3 compliant with unlimited moisture sensitivity rating.

HLMP-EG08 series (WZ000, X1000, Y2000, YZ000) offers narrower 8° viewing angle with brightness from 10750–18150mcd at 1.9V forward voltage. These are suitable for applications requiring higher intensity with directional output. All are ROHS3 compliant.

HLMP-EG10-WZ000 provides 10750mcd at 1.9V with 8° viewing angle but features increased height (12.62mm vs 8.70mm), requiring mechanical clearance verification.

151053RS03000 from Würth Elektronik operates at 1.9V with 5000mcd and 30° wide viewing angle, suitable for applications requiring broad light distribution at lower intensity.

All substitute parts maintain ROHS3 compliance and radial through-hole mounting configuration.

Frequently Asked Questions (FAQ)

Q: Can LTL2H3EZ1K replace LTL2H3HRKL13 directly?

A: Yes. Both parts share the LTL2H3 base product number, maintain 12000mcd brightness and 15° viewing angle, and differ only by 0.2V forward voltage (2.0V vs 2.2V). Circuit design must accommodate operation at 2.0V.

Q: What is the difference between HLMP-EG08 and HLMP-EG15 series?

A: HLMP-EG08 series provides 8° narrow viewing angle with brightness from 10750–18150mcd. HLMP-EG15 series provides 15° viewing angle matching the original part, with brightness from 1690–6250mcd. Selection depends on required light distribution pattern and intensity.

Q: Why do substitute parts operate at 1.9V instead of 2.2V?

A: Forward voltage variation is a normal characteristic across LED manufacturers and product lines. All listed substitutes are electrically compatible at 1.9V forward voltage with 20mA test current. Circuit design must verify that power supply and current-limiting resistor values accommodate this lower voltage.

Q: Can HLMP-EG10-WZ000 be used as a direct mechanical replacement?

A: No. HLMP-EG10-WZ000 has maximum height of 12.62mm compared to 8.70mm for LTL2H3HRKL13. Mechanical clearance in the application must be verified before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant. LTL2H3EZ1K has MSL rating of 1 (Unlimited). All Broadcom and Würth Elektronik parts have MSL rating of 1 (Unlimited), providing superior moisture protection compared to the original part's MSL 2A (4 Weeks).

Q: Which substitute provides the closest brightness match to the original 12000mcd?

A: HLMP-EG08-YZ000 provides 12650mcd at 1.9V with 8° viewing angle. HLMP-EG08-X1000 provides 14100mcd. LTL2H3EZ1K maintains exact 12000mcd brightness at 2.0V with 15° viewing angle.

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