AS12J1001ET Equivalent & Substitute Parts

Part Overview

The AS12J1001ET is a 1 kOhms ±5% 0.5W chip resistor in 1206 (3216 Metric) package manufactured by Ohmite. This thick film resistor features pulse withstanding capability and operates across -55°C to 155°C. The part is active and in stock with 1052 units available. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained while potentially offering enhanced specifications or improved availability.

Substiute Parts

AS12J1001ET

OhmiteIn Stock: 1110AS12J1001ET Datasheet

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CRCW12061K00FKEAHP

Vishay DaleIn Stock: 52497CRCW12061K00FKEAHP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The CRCW12061K00FKEAHP qualifies as a substitute for the AS12J1001ET based on the following alignment of critical parameters:

Matching Parameters:

• Resistance value: 1 kOhms (identical)
• Package / Case: 1206 (3216 Metric) (identical)
• Composition: Thick Film (identical)
• Temperature Coefficient: ±100ppm/°C (identical)
• Operating Temperature Range: -55°C ~ 155°C (identical)
• Features: Pulse Withstanding (present in both)
• RoHS Status: ROHS3 Compliant (identical)
• Moisture Sensitivity Level: 1 (Unlimited) (identical)

Enhanced Specifications:

• Tolerance: ±1% (tighter than ±5%)
• Power Rating: 0.75W (higher than 0.5W)
• Automotive Qualification: AEC-Q200 certified

The substitute part maintains all critical electrical and mechanical compatibility while offering improved tolerance and power handling capability.

Parameter Comparison

Engineering Selection Recommendations

Both the AS12J1001ET and CRCW12061K00FKEAHP are active products with ROHS3 compliance and REACH unaffected status. The CRCW12061K00FKEAHP offers enhanced specifications through tighter tolerance (±1% versus ±5%) and higher power rating (0.75W versus 0.5W), with additional automotive qualification via AEC-Q200 certification. Physical dimensions remain compatible for PCB assembly, with negligible width variation (0.05mm). Selection between these parts depends on application requirements for tolerance precision and power dissipation margin.

Frequently Asked Questions (FAQ)

Q: Can CRCW12061K00FKEAHP replace AS12J1001ET in existing designs?

A: Yes. Both parts share identical resistance value, package, operating temperature range, and composition. The substitute offers improved tolerance and power rating without requiring design modification.

Q: What is the significance of the tolerance difference?

A: The AS12J1001ET has ±5% tolerance, while CRCW12061K00FKEAHP has ±1% tolerance. Applications requiring tighter resistance accuracy benefit from the substitute part. Applications with ±5% tolerance requirements accept both parts.

Q: Are there physical compatibility concerns?

A: Both parts use 1206 (3216 Metric) package with identical height (0.026" maximum). Width differs by 0.05mm (0.063" versus 0.061"), which is within standard PCB pad tolerance and presents no assembly or functionality issues.

Q: What does AEC-Q200 certification mean?

A: AEC-Q200 is an automotive qualification standard. The CRCW12061K00FKEAHP meets this standard; the AS12J1001ET does not. This distinction is relevant only for automotive applications requiring this certification.

Q: Which part should be selected for new designs?

A: Selection depends on application specifications. For general-purpose applications, either part is suitable. For designs requiring tighter tolerance or automotive qualification, the CRCW12061K00FKEAHP is appropriate.