C1608JB1V335M080AC Equivalent & Substitute Parts

Part Overview

The C1608JB1V335M080AC is a 3.3 µF ceramic capacitor rated at 35V with JB temperature coefficient, manufactured by TDK Corporation in 0603 (1608 Metric) surface mount package. This part carries Last Time Buy status, indicating limited availability for future procurement. Identifying equivalent and substitute parts ensures design continuity and supply chain flexibility for applications requiring this capacitance and voltage rating.

Key Parameters

Parameter	Value
Capacitance	3.3 µF
Tolerance	±20%
Voltage - Rated	35V
Temperature Coefficient	JB
Operating Temperature Range	-25°C ~ 85°C
Package / Case	0603 (1608 Metric)
Mounting Type	Surface Mount, MLCC
Features	Low ESL
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the C1608JB1V335M080AC is determined by maintaining electrical equivalence across capacitance, voltage rating, and package form factor. The following parameters define valid substitutes:

Critical Parameters (Must Match):

Capacitance: 3.3 µF
Voltage Rating: 35V minimum
Package: 0603 (1608 Metric)
Mounting Type: Surface Mount, MLCC

Allowable Variations:

Tolerance: ±20% (main part) to ±10% (substitute) — tighter tolerance is acceptable
Temperature Coefficient: JB (main part) to X5R (substitute) — X5R provides wider operating temperature range (-55°C ~ 85°C vs. -25°C ~ 85°C)
Packaging Format: Cut Tape (CT) to Tape & Reel (TR) or Digi-Reel® — packaging format does not affect electrical performance

Three substitute parts meet these criteria, grouped by tolerance and temperature coefficient characteristics.

Parameter Comparison

Parameter	C1608JB1V335M080AC (Main)	C1608JB1V335K080AC (Upgrade)	C1608X5R1V335K080AC (MFR Recommended)	C1608X5R1V335M080AC (MFR Recommended)
Manufacturer	TDK Corporation	TDK Corporation	TDK Corporation	TDK Corporation
Capacitance	3.3 µF	3.3 µF	3.3 µF	3.3 µF
Tolerance	±20%	±10%	±10%	±20%
Voltage - Rated	35V	35V	35V	35V
Temperature Coefficient	JB	JB	X5R	X5R
Operating Temperature	-25°C ~ 85°C	-25°C ~ 85°C	-55°C ~ 85°C	-55°C ~ 85°C
Package / Case	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)
Size / Dimension	0.063" L x 0.031" W (1.60mm x 0.80mm)	0.063" L x 0.031" W (1.60mm x 0.80mm)	0.063" L x 0.031" W (1.60mm x 0.80mm)	0.063" L x 0.031" W (1.60mm x 0.80mm)
Thickness (Max)	0.039" (1.00mm)	0.039" (1.00mm)	0.039" (1.00mm)	0.039" (1.00mm)
Mounting Type	Surface Mount, MLCC	Surface Mount, MLCC	Surface Mount, MLCC	Surface Mount, MLCC
Features	Low ESL	Low ESL	Low ESL	Low ESL
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Last Time Buy	Last Time Buy	Not For New Designs	Not For New Designs

Engineering Selection Recommendations

C1608JB1V335K080AC — Direct upgrade path with identical temperature coefficient (JB) and operating range (-25°C ~ 85°C). Tolerance improves from ±20% to ±10%, providing tighter capacitance specification. Maintains Last Time Buy status. Select this part for designs requiring JB temperature stability with enhanced tolerance performance.

C1608X5R1V335K080AC — Manufacturer-recommended substitute with X5R temperature coefficient and extended operating range (-55°C ~ 85°C). Tolerance is ±10%. Carries Not For New Designs status. Select this part only for existing designs where low-temperature operation (-55°C) is required and design freeze permits temperature coefficient change from JB to X5R.

C1608X5R1V335M080AC — Manufacturer-recommended substitute with X5R temperature coefficient, extended operating range (-55°C ~ 85°C), and ±20% tolerance matching the main part. Carries Not For New Designs status. Select this part only for existing designs where low-temperature operation is required and tolerance specification aligns with original design.

Frequently Asked Questions (FAQ)

Q: Can C1608JB1V335K080AC be used as a direct replacement for C1608JB1V335M080AC?

A: Yes. Both parts share identical capacitance (3.3 µF), voltage rating (35V), temperature coefficient (JB), operating temperature range (-25°C ~ 85°C), and 0603 package. The tolerance difference (±10% vs. ±20%) represents an improvement in capacitance accuracy and does not prevent substitution.

Q: What is the difference between JB and X5R temperature coefficients?

A: JB temperature coefficient specifies capacitance change over -25°C ~ 85°C operating range. X5R temperature coefficient specifies capacitance change over -55°C ~ 85°C operating range. X5R provides extended low-temperature operation but represents a different dielectric material. Substitution from JB to X5R is valid only if the design does not depend on JB-specific characteristics and low-temperature performance is acceptable.

Q: Are packaging format differences (Cut Tape vs. Tape & Reel) electrically significant?

A: No. Packaging format affects handling, storage, and assembly logistics but does not alter electrical performance. C1608JB1V335M080AC in Cut Tape (CT) format is electrically equivalent to C1608X5R1V335K080AC in Tape & Reel (TR) format.

Q: Why do C1608X5R1V335K080AC and C1608X5R1V335M080AC carry "Not For New Designs" status?

A: Product status reflects manufacturer lifecycle decisions. These parts remain available for existing designs but are not recommended for new development. For new designs, C1608JB1V335K080AC (Last Time Buy) is the preferred substitute.

Q: Can tolerance be tightened from ±20% to ±10% without circuit redesign?

A: Tightening tolerance (±20% to ±10%) reduces capacitance variation and improves circuit performance predictability. This change does not require redesign and is generally beneficial for applications sensitive to capacitance accuracy.

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