IR02SHR10K Equivalent & Substitute Parts

Part Overview

The IR02SHR10K is a 100 nH unshielded axial inductor manufactured by Vishay Dale, rated for 1.35 A with 80 mOhm maximum DC resistance. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain electrical performance across the specified operating temperature range and mechanical compatibility with through-hole axial mounting.

Key Parameters

Parameter	Value
Inductance	100 nH
Tolerance	±10%
Current Rating	1.35 A
DC Resistance (Max)	80 mOhm
Q @ Frequency	40 @ 25 MHz
Frequency - Self Resonant	680 MHz
Operating Temperature	-55°C ~ 125°C
Mounting Type	Through Hole
Package / Case	Axial
Shielding	Unshielded
Material - Core	Phenolic

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Electrical Parameters (Primary):

Inductance value: 100 nH ±10%
Current rating: minimum 1.35 A
DC resistance: maximum 80 mOhm
Q factor: 40 @ 25 MHz
Self-resonant frequency: 680 MHz or higher
Operating temperature range: minimum -55°C ~ 105°C (IR02SHR10K operates to 125°C)

Mechanical Parameters (Secondary):

Mounting type: Through Hole
Package: Axial
Core material: Phenolic
Shielding: Unshielded

Compliance Considerations:

RoHS status and REACH compliance affect suitability for regulated applications
Product status (Active vs. Obsolete) indicates availability and long-term supply

The following parts meet the electrical and mechanical substitution criteria:

1025R-94K (API Delevan Inc.) – Direct electrical equivalent with improved current rating (1.38 A) and RoHS3 compliance
ER1025-94KP (API Delevan Inc.) – Exact electrical match with tape & reel packaging
ER1025-94KM (API Delevan Inc.) – Exact electrical match with tape & reel packaging
ER1025-94KR (API Delevan Inc.) – Military-grade equivalent per MIL-PRF-39010/08 with extended temperature range support
8230-94-RC (Bourns Inc.) – Wirewound alternative with lower DC resistance (70 mOhm) but reduced current rating (1.1 A) and upper temperature limit (105°C)

Parameter Comparison

Part Number	Manufacturer	Inductance	Current Rating (A)	DC Resistance (mOhm)	Q @ 25 MHz	SRF (MHz)	Temp Range (°C)	Type	RoHS Status	Product Status
IR02SHR10K	Vishay Dale	100 nH	1.35	80 Max	40	680	-55 ~ 125	Unshielded	Non-compliant	Obsolete
1025R-94K	API Delevan	100 nH	1.38	80 Max	40	680	-55 ~ 125	Molded	ROHS3 Compliant	Active
ER1025-94KP	API Delevan	100 nH	1.35	80 Max	40	680	-55 ~ 105	Molded	Non-compliant	Active
ER1025-94KM	API Delevan	100 nH	1.35	80 Max	40	680	-55 ~ 105	Molded	Non-compliant	Active
ER1025-94KR	API Delevan	100 nH	1.35	80 Max	40	680	-55 ~ 125	Unshielded	Non-compliant	Active
8230-94-RC	Bourns Inc.	100 nH	1.1	70 Max	40	690	-55 ~ 105	Wirewound	ROHS3 Compliant	Active

Engineering Selection Recommendations

Primary Substitutes (Full Electrical & Mechanical Compatibility):

1025R-94K is the preferred direct substitute. It provides identical inductance, tolerance, and Q factor with a marginally higher current rating (1.38 A vs. 1.35 A). The part is active, widely available (367,657 units in stock), and RoHS3 compliant. The molded construction offers improved mechanical robustness compared to the original design. Bulk packaging is suitable for production environments.

ER1025-94KR is the alternative for applications requiring the full -55°C to 125°C temperature range. This part meets military specification MIL-PRF-39010/08 and maintains exact electrical parameters. Tape & reel packaging supports automated assembly. RoHS non-compliance matches the original part status.

Secondary Substitutes (Conditional Compatibility):

ER1025-94KP and ER1025-94KM are electrically equivalent but limited to -55°C to 105°C operation. These are suitable only for applications not requiring the upper 20°C temperature margin of the original part. Both are active and available in tape & reel format.

8230-94-RC (Bourns wirewound) is a functional alternative only for applications where current demand does not exceed 1.1 A. The lower DC resistance (70 mOhm) provides improved efficiency but the reduced current rating and upper temperature limit (105°C) restrict its use. RoHS3 compliance is an advantage for regulated markets.

Frequently Asked Questions (FAQ)

Q: Can 1025R-94K directly replace IR02SHR10K in all applications?

A: Yes, for applications operating within -55°C to 125°C. The 1025R-94K meets or exceeds all electrical specifications and maintains through-hole axial compatibility. The higher current rating (1.38 A) provides additional margin.

Q: What is the difference between ER1025-94KP, ER1025-94KM, and ER1025-94KR?

A: All three are API Delevan ER1025 series parts with identical electrical performance. ER1025-94KR supports the full -55°C to 125°C temperature range and meets military specification MIL-PRF-39010/08. ER1025-94KP and ER1025-94KM are limited to -55°C to 105°C. Packaging differs: all use tape & reel format.

Q: Why does 8230-94-RC have lower DC resistance but is not the primary choice?

A: The 8230-94-RC (Bourns wirewound) has 70 mOhm resistance versus 80 mOhm maximum for the original part. However, its current rating is limited to 1.1 A, below the 1.35 A requirement. The upper operating temperature is also restricted to 105°C. It is suitable only for applications with lower current demands.

Q: Is RoHS compliance required for this substitution?

A: The original IR02SHR10K is RoHS non-compliant. For new designs or regulated markets, 1025R-94K or 8230-94-RC (both RoHS3 compliant) are preferred. For legacy applications matching the original specification, ER1025 series parts (non-compliant) maintain exact compatibility.

Q: What are the physical dimension differences between substitutes?

A: IR02SHR10K is 0.120" diameter × 0.260" length. API Delevan ER1025 and 1025R series are 0.095" diameter × 0.250" length (smaller profile). Bourns 8230-94-RC is 0.120" diameter × 0.300" length (same diameter, slightly longer). All fit standard through-hole axial footprints with minor PCB layout adjustments if needed.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes, all substitutes maintain through-hole axial mounting compatibility. Physical dimension variations are minor and accommodate standard component spacing. No circuit redesign is required.

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