ECS-H1CD226R Equivalent & Substitute Parts

Part Overview

The ECS-H1CD226R is a 22 µF molded tantalum capacitor rated at 16 V in a 2917 (7343 Metric) surface mount package, manufactured by Panasonic Electronic Components as part of the TEH series. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity. Substitute parts must maintain electrical compatibility across capacitance, voltage rating, tolerance, and physical dimensions while meeting modern compliance standards.

Key Parameters

Parameter	Value
Capacitance	22 µF
Voltage Rating	16 V
Tolerance	±20%
Package / Case	2917 (7343 Metric)
Mounting Type	Surface Mount
Type	Molded Tantalum
Operating Temperature Range	-55°C ~ 125°C
Physical Dimensions	0.287" L x 0.169" W (7.30mm x 4.30mm)
Height - Seated (Max)	0.118" (3.00mm)

Substitute Part Grouping Explanation

Substitute parts for the ECS-H1CD226R are classified based on electrical and mechanical compatibility. The primary substitution criteria are:

Direct Electrical Equivalents maintain identical capacitance (22 µF), voltage rating (16 V), package (2917), and operating temperature range (-55°C ~ 125°C). These parts are interchangeable without circuit redesign.

Similar Parts with Parameter Variations share the same capacitance, package, and temperature range but differ in voltage rating or tolerance. These require circuit-level verification to confirm suitability.

The following parameters determine substitution validity:

Capacitance: Must be 22 µF
Voltage Rating: Must be ≥16 V
Package / Case: Must be 2917 (7343 Metric)
Mounting Type: Must be Surface Mount
Operating Temperature: Must support -55°C ~ 125°C

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage Rating	Tolerance	Package	ESR	Product Status	RoHS Status	Height (Max)
ECS-H1CD226R	Panasonic	22 µF	16 V	±20%	2917	—	Obsolete	Non-compliant	0.118" (3.00mm)
F971C226MNC	KYOCERA AVX	22 µF	16 V	±20%	2917	700mOhm	Active	ROHS3 Compliant	0.118" (3.00mm)
TAJD226M016RNJ	KYOCERA AVX	22 µF	16 V	±20%	2917	1.1Ohm	Active	ROHS3 Compliant	0.122" (3.10mm)
293D226X9016D2TE3	Vishay Sprague	22 µF	16 V	±10%	2917	800mOhm	Active	ROHS3 Compliant	0.122" (3.10mm)
TAJD226K025RNJ	KYOCERA AVX	22 µF	25 V	±10%	2917	900mOhm	Active	ROHS3 Compliant	0.122" (3.10mm)

Engineering Selection Recommendations

F971C226MNC and TAJD226M016RNJ are the primary direct substitutes for ECS-H1CD226R. Both maintain 22 µF capacitance at 16 V with ±20% tolerance and 2917 package compatibility. Both parts are active products with ROHS3 compliance, providing long-term availability and regulatory alignment. F971C226MNC features automotive-grade reliability (AEC-Q200) with 700mOhm ESR, while TAJD226M016RNJ offers general-purpose specifications with 1.1Ohm ESR. Height variation (0.122" vs. 0.118") requires PCB layout verification for space-constrained applications.

293D226X9016D2TE3 maintains electrical compatibility with improved tolerance (±10% vs. ±20%) and lower ESR (800mOhm), supporting applications requiring tighter capacitance control. Voltage rating remains 16 V with identical package dimensions.

TAJD226K025RNJ is suitable only when circuit design permits higher voltage rating (25 V). This part offers improved tolerance (±10%) and is available in high volume. Use this substitute only if the 25 V rating does not conflict with board-level voltage constraints.

All active substitutes provide ROHS3 compliance and unlimited moisture sensitivity (MSL 1), eliminating the RoHS non-compliance issue of the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can TAJD226K025RNJ replace ECS-H1CD226R directly? A: Electrically, yes. The 25 V rating exceeds the 16 V requirement, and capacitance and package are identical. However, verify that the higher voltage rating does not introduce unintended circuit behavior or cost implications in your application.

Q: What is the significance of ESR differences among substitutes? A: ESR (Equivalent Series Resistance) affects ripple current handling and thermal performance. Lower ESR (700mOhm to 1.1Ohm) improves high-frequency performance. Select based on your circuit's ripple current and frequency requirements.

Q: Are there height constraints when switching from ECS-H1CD226R to TAJD226M016RNJ? A: Yes. ECS-H1CD226R has a maximum seated height of 0.118" (3.00mm), while TAJD226M016RNJ is 0.122" (3.10mm). Verify PCB clearance and component placement before substitution.

Q: Does tolerance difference matter between ±20% and ±10% parts? A: Tolerance affects capacitance accuracy. ±10% parts (293D226X9016D2TE3, TAJD226K025RNJ) provide tighter control, beneficial for precision filtering or timing circuits. ±20% parts are acceptable for general-purpose applications.

Q: What compliance advantages do active substitutes offer? A: All active substitutes are ROHS3 compliant and carry unlimited moisture sensitivity (MSL 1), eliminating handling and storage restrictions. The obsolete ECS-H1CD226R is RoHS non-compliant, making active substitutes necessary for new designs and regulatory compliance.

Q: Can I use F971C226MNC in automotive applications? A: Yes. F971C226MNC carries AEC-Q200 automotive-grade reliability certification, making it suitable for automotive and high-reliability applications.

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