IM04EB1R2K Equivalent & Substitute Parts

Part Overview

The IM04EB1R2K is a 1.2 µH unshielded molded inductor manufactured by Vishay Dale, rated for 650 mA with a maximum DC resistance of 420mOhm. This axial through-hole component operates across a temperature range of -55°C to 125°C and is classified as obsolete. Due to its obsolete status, equivalent substitute parts from active product lines are necessary for new designs and ongoing production requirements.

Substiute Parts

IM04EB1R2K

Vishay DaleIn Stock: 864IM04EB1R2K Datasheet

Current PartRFQ

1537R-14K

API Delevan Inc.In Stock: 6931537R-14K Datasheet

DirectRFQ

ER1537-14KM

API Delevan Inc.In Stock: 993ER1537-14KM Datasheet

MFR RecommendedRFQ

ER1537-14KP

API Delevan Inc.In Stock: 1103ER1537-14KP Datasheet

MFR RecommendedRFQ

ER1537-14KR

API Delevan Inc.In Stock: 874ER1537-14KR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IM04EB1R2K is determined by the following critical parameters:

• Inductance Value: 1.2 µH (±10% tolerance)
• DC Resistance: 420mOhm Max
• Current Rating: Minimum 650 mA
• Operating Temperature: -55°C minimum to 105°C minimum
• Core Material: Phenolic
• Shielding: Unshielded
• Package Type: Axial
• Physical Dimensions: 0.156" Dia x 0.375" L (3.96mm x 9.53mm)
• Mounting Type: Through Hole

All substitute parts listed maintain these core electrical and mechanical specifications, ensuring functional equivalence in circuit applications. Variations in current rating above the minimum threshold, packaging format (Cut Tape vs. Tape & Reel), and compliance certifications do not affect electrical substitutability.

Parameter Comparison

Engineering Selection Recommendations

1537R-14K (API Delevan Inc.): This part is the primary direct substitute. It maintains all critical electrical parameters identical to the IM04EB1R2K, with an enhanced current rating of 730 mA providing additional design margin. The part is active in production and ROHS3 compliant. It is supplied in Cut Tape format, suitable for manual assembly and lower-volume applications.

ER1537-14KM, ER1537-14KP, ER1537-14KR (API Delevan Inc.): These three variants are manufacturer-recommended equivalents from the active ER1537 series. All three maintain identical electrical specifications to the original part. They are supplied in Tape & Reel format, optimized for automated assembly and high-volume production. The operating temperature range is reduced to -55°C ~ 105°C compared to the original -55°C ~ 125°C specification. These parts are RoHS non-compliant, which may impact suitability for applications requiring RoHS certification.

For applications requiring RoHS3 compliance, the 1537R-14K is the recommended selection. For high-volume automated assembly without RoHS requirements, the ER1537 series variants are appropriate alternatives.

Frequently Asked Questions (FAQ)

Q: Can the 1537R-14K be used as a direct replacement for the IM04EB1R2K?

A: Yes. The 1537R-14K maintains all critical electrical parameters: 1.2 µH inductance, 420mOhm maximum DC resistance, and equivalent Q factor and self-resonant frequency. The higher current rating of 730 mA versus 650 mA provides additional design margin without affecting circuit performance.

Q: What is the difference between the 1537R-14K and the ER1537 series variants?

A: The primary differences are packaging format and compliance status. The 1537R-14K is supplied in Cut Tape format and is ROHS3 compliant. The ER1537-14KM, ER1537-14KP, and ER1537-14KR are supplied in Tape & Reel format and are RoHS non-compliant. All four parts are electrically equivalent.

Q: Does the reduced operating temperature range of the ER1537 series affect substitutability?

A: The ER1537 series operates from -55°C to 105°C, compared to the original -55°C to 125°C range. Substitutability depends on the application's actual operating temperature requirements. If the circuit operates only within the -55°C to 105°C range, the ER1537 variants are suitable. Applications requiring operation above 105°C should use the 1537R-14K.

Q: Are there differences between ER1537-14KM, ER1537-14KP, and ER1537-14KR?

A: These three parts are electrically and mechanically identical. The suffix designations (M, P, R) indicate different packaging or lead finish options from the manufacturer. Selection between them depends on specific procurement or assembly requirements.

Q: What is the significance of the Cut Tape versus Tape & Reel packaging?

A: Cut Tape format is suitable for manual assembly, prototyping, and lower-volume production. Tape & Reel format is optimized for automated pick-and-place assembly equipment and high-volume manufacturing. The electrical performance is identical; packaging selection depends on assembly methodology.

Q: Is the IM04EB1R2K still available for purchase?

A: The IM04EB1R2K is classified as obsolete. The substitute parts listed are active products with confirmed inventory availability and are recommended for new designs and ongoing production.