1210-101K Unshielded Inductor - Equivalent & Substitute Parts

Part Overview

The 1210-101K is a fixed unshielded inductor manufactured by API Delevan Inc., rated at 100 nH inductance with a 1.018 A current rating. This surface mount component is designed for applications requiring compact RF and high-frequency circuitry in the 1210 (3225 metric) package format. The part maintains Active product status and is widely stocked at 861 units. Alternative equivalent parts become necessary when specific packaging requirements (such as Tape & Reel configuration), environmental compliance standards (RoHS3 compliance), or inventory constraints drive the need for interchangeable solutions while maintaining identical electrical and mechanical performance.

Substiute Parts

1210-101K

API Delevan Inc.In Stock: 9031210-101K Datasheet

Current PartRFQ

1210R-101K

API Delevan Inc.In Stock: 16111210R-101K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 1210R-101K qualifies as a direct electrical and mechanical equivalent to the 1210-101K. Substitution eligibility is determined by the following critical parameters:

• Inductance Value: Both parts specify 100 nH with ±10% tolerance, ensuring equivalent circuit behavior
• Current Rating: Both support 1.018 A continuous current capacity
• DC Resistance: Both maintain 200 mOhm maximum DCR, preserving power dissipation characteristics
• Quality Factor: Both exhibit Q of 30 at 25 MHz, confirming identical frequency response
• Package Geometry: Both use 1210 (3225 metric) surface mount form factor with identical dimensions (0.128" L × 0.095" W) and height (0.101" max seated)
• Operating Temperature Range: Both span -55°C to 125°C, enabling use in identical thermal environments
• Shielding & Core Material: Both are unshielded inductors with iron cores

The sole differentiator is packaging configuration (standard versus Tape & Reel) and RoHS compliance status, neither of which affects electrical performance or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Electrical Compatibility: Both parts are fully interchangeable from an electrical standpoint. All performance parameters—inductance, current rating, DC resistance, quality factor, and self-resonant frequency—are identical, confirming electrical equivalence for circuit applications.

RoHS Compliance Consideration: The 1210R-101K carries ROHS3 compliance certification, whereas the 1210-101K is RoHS non-compliant. For designs subject to RoHS regulatory requirements or OEM mandates, the 1210R-101K is the appropriate selection.

Packaging Format: The 1210R-101K is supplied in Tape & Reel (TR) format, optimizing for automated assembly and high-volume production runs. The 1210-101K is supplied in standard packaging, suitable for smaller-scale or manual assembly operations.

Inventory & Availability: The 1210R-101K maintains higher stock levels (1594 units) compared to the 1210-101K (861 units), providing enhanced availability for time-critical sourcing requirements.

Frequently Asked Questions (FAQ)

Q: Can I use 1210R-101K as a direct replacement for 1210-101K in my circuit design? A: Yes. Both parts are electrically and mechanically identical. All electrical parameters including inductance (100 nH), current rating (1.018 A), DC resistance (200 mOhm max), quality factor (30 @ 25 MHz), and operating temperature range (-55°C to 125°C) are matched. The package dimensions and mounting type are identical, enabling direct substitution on existing PCBs.

Q: What is the difference between the two parts? A: The primary differences are packaging configuration and RoHS compliance status. The 1210R-101K is supplied in Tape & Reel format and carries ROHS3 compliance, while the 1210-101K uses standard packaging and is RoHS non-compliant. These differences do not affect electrical performance or board-level compatibility.

Q: Should I select the Tape & Reel version for my production? A: Selection depends on manufacturing process requirements. Tape & Reel packaging (1210R-101K) is standard for automated assembly operations and high-volume production. Standard packaging (1210-101K) is appropriate for low-volume builds, manual assembly, or prototyping stages.

Q: Does RoHS compliance affect my component selection? A: RoHS compliance becomes a selection criterion only if your design is subject to RoHS regulations or customer-mandated environmental requirements. If RoHS certification is required, select 1210R-101K. Otherwise, both parts deliver equivalent performance.

Q: Are the physical dimensions and PCB footprints identical? A: Yes. Both parts utilize the 1210 (3225 metric) package with identical dimensions (0.128" L × 0.095" W / 3.25mm × 2.42mm) and maximum seated height (0.101" / 2.57mm). No PCB layout modifications are required for substitution.

Q: What frequency range are these inductors suitable for? A: Both inductors are characterized at 25 MHz with a self-resonant frequency of 550 MHz, making them suitable for RF and high-frequency applications within this bandwidth window.