TMCSB1V105MTRF Equivalent & Substitute Parts

Part Overview

The TMCSB1V105MTRF is a 1 µF molded tantalum capacitor manufactured by Vishay Sprague, rated for 35 V with ±20% tolerance. This surface mount component in 1411 (3528 Metric) package is designed for general purpose applications requiring stable capacitance across the operating temperature range of -55°C to 125°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, manufacturing discontinuation, or design flexibility within allowable parameter ranges.

Key Parameters

Parameter	Value
Capacitance	1 µF
Voltage Rating	35 V
Tolerance	±20%
Package / Case	1411 (3528 Metric)
Type	Molded Tantalum
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for TMCSB1V105MTRF are qualified based on the following criteria:

Critical Parameters (Must Match):

Capacitance: 1 µF
Voltage Rating: 35 V
Package / Case: 1411 (3528 Metric)
Mounting Type: Surface Mount
Type: Molded Tantalum

Allowable Variations:

Tolerance: ±20% (main part) to ±10% (substitute parts acceptable as tighter tolerance is backward compatible)
ESR (Equivalent Series Resistance): Variations permitted within application requirements
Manufacturer: Different manufacturers acceptable if all critical parameters match
Packaging Format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® acceptable for same component

Compliance Requirements:

RoHS3 Compliant
MSL Rating: 1 (Unlimited)
Operating Temperature: -55°C ~ 125°C maintained

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Tolerance	Voltage	ESR @ 100kHz	Package	Height (Max)	Lifetime @ 125°C	RoHS Status
TMCSB1V105MTRF	Vishay Sprague	1 µF	±20%	35 V	3.9 Ohm	1411 (3528 Metric)	2.10 mm	—	ROHS3
293D105X0035B2TE3	Vishay Sprague	1 µF	±20%	35 V	5 Ohm	1411 (3528 Metric)	2.11 mm	—	ROHS3
T491B105M035AT7280	KEMET	1 µF	±20%	35 V	5 Ohm	1411 (3528 Metric)	2.10 mm	2000 Hrs @ 125°C	ROHS3
T495B105K035ATE1K5	KEMET	1 µF	±10%	35 V	1.5 Ohm	1411 (3528 Metric)	2.10 mm	2000 Hrs @ 125°C	ROHS3
TAJB105K035SNJ	KYOCERA AVX	1 µF	±10%	35 V	6.5 Ohm	1411 (3528 Metric)	2.10 mm	2000 Hrs @ 125°C	ROHS3
TCKIV105BT	Cal-Chip Electronics, Inc.	1 µF	±10%	35 V	6.5 Ohm	1411 (3528 Metric)	2.10 mm	2000 Hrs @ 125°C	ROHS3
TCMIV105BT	Cal-Chip Electronics, Inc.	1 µF	±20%	35 V	6.5 Ohm	1411 (3528 Metric)	2.10 mm	2000 Hrs @ 125°C	ROHS3

Engineering Selection Recommendations

All substitute parts listed maintain Active product status and ROHS3 compliance. Selection between TMCSB1V105MTRF and qualified substitutes depends on application-specific requirements:

Direct Tolerance Match (±20%):

TMCSB1V105MTRF (Vishay Sprague, original)
293D105X0035B2TE3 (Vishay Sprague, MFR recommended)
T491B105M035AT7280 (KEMET, parametric equivalent)
TCMIV105BT (Cal-Chip Electronics, parametric equivalent)

Tighter Tolerance (±10%):

T495B105K035ATE1K5 (KEMET, lower ESR at 1.5 Ohm)
TAJB105K035SNJ (KYOCERA AVX)
TCKIV105BT (Cal-Chip Electronics)

Parts with ±10% tolerance are backward compatible with ±20% tolerance specifications. ESR variations range from 1.5 Ohm to 6.5 Ohm; selection should align with circuit impedance requirements. All parts maintain identical package dimensions and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can I substitute TMCSB1V105MTRF with a part having ±10% tolerance?

A: Yes. A ±10% tolerance part is a valid substitute for a ±20% tolerance specification, as the tighter tolerance is backward compatible with the original requirement.

Q: Are all substitute parts in the same physical package?

A: Yes. All listed substitutes use the 1411 (3528 Metric) package with identical length (4.60 mm) and width (2.80 mm). Height variation is negligible (2.10 mm to 2.11 mm maximum seated height).

Q: What is the significance of ESR differences between parts?

A: ESR (Equivalent Series Resistance) affects high-frequency performance and ripple current handling. The main part TMCSB1V105MTRF has 3.9 Ohm ESR, while substitutes range from 1.5 Ohm to 6.5 Ohm. Selection should verify circuit compatibility with the specific ESR value.

Q: Do all substitute parts have the same lifetime rating?

A: No. TMCSB1V105MTRF and 293D105X0035B2TE3 do not specify lifetime at temperature. KEMET (T491, T495 series) and KYOCERA AVX (TAJ series) and Cal-Chip (TC series) parts specify 2000 Hrs @ 125°C.

Q: Are there packaging format differences between substitutes?

A: TMCSB1V105MTRF and most substitutes are supplied in Tape & Reel (TR) format. 293D105X0035B2TE3 is available in Cut Tape (CT) & Digi-Reel® format. Both formats are compatible for the same component specification.

Q: Which substitute offers the lowest ESR?

A: T495B105K035ATE1K5 (KEMET) offers the lowest ESR at 1.5 Ohm @ 100kHz, with the trade-off of ±10% tolerance and higher cost relative to standard ±20% tolerance parts.

Q: Are all parts ROHS3 compliant?

A: Yes. All listed parts, including the main part and all substitutes, are ROHS3 compliant with MSL Rating 1 (Unlimited).

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