ERG-2SJ821 Equivalent & Substitute Parts

Part Overview

The ERG-2SJ821 is a 820 Ohms ±5% 2W through-hole axial resistor manufactured by Panasonic Electronic Components. This metal oxide film resistor features flame-proof and safety characteristics, with an operating temperature range of -55°C to 235°C. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance, repair, and redesign applications.

Substiute Parts

ERG-2SJ821

Panasonic Electronic ComponentsIn Stock: 1124ERG-2SJ821 Datasheet

Current PartRFQ

ALSR05820R0FE12

Vishay DaleIn Stock: 1234ALSR05820R0FE12 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERG-2SJ821 is determined by the following critical parameters:

• Resistance Value: 820 Ohms (exact match required)
• Package Type: Axial through-hole configuration
• Power Rating: Minimum 2W (equal or greater acceptable)
• Tolerance: ±5% or better (tighter tolerance acceptable)
• Composition: Metal oxide film or wirewound acceptable for equivalent electrical performance
• Operating Temperature Range: Must encompass or exceed -55°C to 235°C
• Compliance: ROHS3 compliance required

The ALSR05820R0FE12 meets these substitution criteria with enhanced specifications in power rating, tolerance, and temperature coefficient.

Parameter Comparison

Engineering Selection Recommendations

The ALSR05820R0FE12 is a direct functional substitute for the ERG-2SJ821. Both components are ROHS3 compliant and maintain the required 820 Ohm resistance value in axial through-hole packaging. The substitute part offers superior specifications: higher power rating (5W vs. 2W), tighter tolerance (±1% vs. ±5%), lower temperature coefficient (±30ppm/°C vs. ±350ppm/°C), and extended operating temperature range (-65°C to 250°C vs. -55°C to 235°C). The active product status of the ALSR05820R0FE12 ensures ongoing availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the ALSR05820R0FE12 replace the ERG-2SJ821 in all applications?

A: Yes. Both components share identical resistance values, axial package configuration, and ROHS3 compliance. The substitute part exceeds the original specifications in power rating, tolerance, and temperature stability.

Q: What is the physical size difference between these parts?

A: The ERG-2SJ821 measures 0.157" diameter × 0.472" length (4.00mm × 12.00mm). The ALSR05820R0FE12 measures 0.312" diameter × 0.875" length (7.92mm × 22.23mm). Physical space constraints must be evaluated during component selection.

Q: Are there composition differences between metal oxide film and wirewound resistors?

A: The ERG-2SJ821 uses metal oxide film composition, while the ALSR05820R0FE12 uses wirewound composition. Both achieve the specified 820 Ohm resistance value. Wirewound construction in the substitute provides superior temperature coefficient performance and higher power dissipation capability.

Q: Does the substitute part maintain temperature performance across the full operating range?

A: The ALSR05820R0FE12 operates from -65°C to 250°C, which encompasses and exceeds the original ERG-2SJ821 range of -55°C to 235°C. The lower temperature coefficient (±30ppm/°C) ensures improved stability across this extended range.

Q: Is the substitute part currently available?

A: Yes. The ALSR05820R0FE12 maintains active product status with 1130 pieces in stock, ensuring supply continuity for the obsolete ERG-2SJ821.