TPL-70/18X45F Equivalent & Substitute Parts

Part Overview

The TPL-70/18X45F is a 70 F (EDLC) supercapacitor rated at 2.7 V with through-hole radial can packaging. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support and design continuity. The part features 13 mOhm ESR at 1 kHz and a rated lifetime of 1000 hours at 85°C. Substitute parts must maintain electrical and mechanical compatibility within the specified parameter tolerances.

Key Parameters

Parameter	Value
Capacitance	70 F
Voltage Rating	2.7 V
ESR @ 1 kHz	13 mOhm
Lifetime @ 85°C	1000 Hrs
Mounting Type	Through Hole
Package Type	Radial, Can
Lead Spacing	0.295" (7.50 mm)
Case Diameter	0.709" Dia (18.00 mm)
Operating Temperature Range	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the TPL-70/18X45F is determined by the following critical parameters:

Electrical Compatibility Requirements:

Voltage rating must equal or exceed 2.7 V
Capacitance value must fall within the tolerance band of 70 F
ESR must not exceed the original specification to maintain circuit performance
Lifetime rating must support the intended application duration

Mechanical Compatibility Requirements:

Through-hole termination with PC pins
Radial, can package configuration
Lead spacing of 0.295" (7.50 mm)
Case diameter of 0.709" (18.00 mm)
Height must fit within board layout constraints

Regulatory Compliance:

ROHS3 compliance required
REACH unaffected status maintained

Two substitute parts meet these criteria with documented equivalency.

Parameter Comparison

Parameter	TPL-70/18X45F (Main)	TPLH-2R7/75WR18X40 (MFR Recommended)	DGH706Q2R7 (Similar)
Manufacturer	Tecate Group	Tecate Group	Cornell Dubilier Electronics (CDE)
Capacitance	70 F	75 F	70 F
Voltage Rating	2.7 V	2.7 V	2.7 V
Tolerance	-10%, +20%	-	-10%, +30%
ESR @ 1 kHz	13 mOhm	11 mOhm	14 mOhm
Lifetime @ 85°C	1000 Hrs	1500 Hrs	1500 Hrs
Mounting Type	Through Hole	Through Hole	Through Hole
Package Type	Radial, Can	Radial, Can	Radial, Can
Lead Spacing	0.295" (7.50 mm)	0.295" (7.50 mm)	0.295" (7.50 mm)
Case Diameter	0.709" Dia (18.00 mm)	0.709" Dia (18.00 mm)	0.709" Dia (18.00 mm)
Height - Seated (Max)	1.831" (46.50 mm)	1.654" (42.00 mm)	2.047" (52.00 mm)
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

TPLH-2R7/75WR18X40 (MFR Recommended Substitute): This Tecate Group part is the manufacturer-recommended replacement. It maintains identical voltage rating, lead spacing, and case diameter. The 75 F capacitance represents a 7% increase within acceptable tolerance margins. ESR is reduced to 11 mOhm, improving circuit efficiency. Lifetime rating increases to 1500 hours at 85°C. Height is reduced to 42.00 mm, providing improved board layout flexibility. Active product status ensures long-term availability and supply chain continuity. ROHS3 compliance is maintained.

DGH706Q2R7 (Similar Substitute): This Cornell Dubilier Electronics part maintains the original 70 F capacitance value with identical voltage rating and mechanical footprint compatibility. ESR is 14 mOhm, marginally higher than the original specification. Lifetime rating is 1500 hours at 85°C. Height is 52.00 mm, exceeding the original dimension and requiring board layout verification. Active product status ensures availability. ROHS3 compliance is maintained. This part is suitable where capacitance matching is prioritized over ESR optimization.

Frequently Asked Questions (FAQ)

Q: Can the TPLH-2R7/75WR18X40 be used as a direct replacement for the TPL-70/18X45F?

A: Yes. Both parts share identical voltage rating (2.7 V), lead spacing (0.295"), and case diameter (0.709"). The 75 F capacitance of the substitute falls within acceptable tolerance for 70 F applications. The reduced ESR (11 mOhm vs. 13 mOhm) and extended lifetime (1500 hrs vs. 1000 hrs) provide performance improvement. Height reduction to 42.00 mm may require board layout verification.

Q: What is the primary difference between the two substitute options?

A: The TPLH-2R7/75WR18X40 offers higher capacitance (75 F) and lower ESR (11 mOhm) with reduced height (42.00 mm). The DGH706Q2R7 maintains the original 70 F capacitance with slightly higher ESR (14 mOhm) and greater height (52.00 mm). Selection depends on whether capacitance matching or ESR optimization is prioritized for the application.

Q: Are both substitute parts mechanically compatible with the original PCB footprint?

A: Both parts maintain identical lead spacing (0.295") and case diameter (0.709"), ensuring footprint compatibility. However, height differences must be verified: TPLH-2R7/75WR18X40 is 42.00 mm (4.50 mm shorter than original), and DGH706Q2R7 is 52.00 mm (5.50 mm taller than original). Board clearance and component placement must be confirmed before substitution.

Q: Do the substitute parts maintain regulatory compliance?

A: Yes. Both TPLH-2R7/75WR18X40 and DGH706Q2R7 are ROHS3 compliant and REACH unaffected, matching the original part's regulatory status.

Q: What is the impact of ESR differences on circuit performance?

A: The TPLH-2R7/75WR18X40 has lower ESR (11 mOhm) than the original (13 mOhm), reducing resistive losses and improving efficiency. The DGH706Q2R7 has slightly higher ESR (14 mOhm), which may increase power dissipation in high-current applications. ESR impact is application-dependent and should be evaluated based on circuit requirements.

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