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HomeProductsResistorsResistor Networks, ArraysCAT16-681J2LF
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CAT16-681J2LF - Bourns Inc.

Manufacturer Part Number
CAT16-681J2LF
Manufacturer
Bourns, Inc.
Allelco Part Number
98D-CAT16-681J2LF
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
404,185 pcs available, New & Original
Parts Description
RES ARRAY 2 RES 680 OHM 0606
Package
0606
Data sheet
CAT16-681J2LF.pdf

PCN Obsolescence/ EOL

Cylindrical Battery Holders.pdf
RoHs Status
ROHS3 Compliant
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In stock: 404185

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Specifications

CAT16-681J2LF Tech Specifications
Bourns Inc. - CAT16-681J2LF technical specifications, attributes, parameters and parts with similar specifications to Bourns Inc. - CAT16-681J2LF

Product Attribute Attribute Value
Manufacturer Bourns, Inc.
Tolerance ±5%
Temperature Coefficient ±200ppm/°C
Supplier Device Package 0606
Size / Dimension 0.063' L x 0.063' W (1.60mm x 1.60mm)
Series CAT16
Resistor-Ratio-Drift -
Resistor Matching Ratio -
Resistance (Ohms) 680
Power Per Element 62.5mW
Product Attribute Attribute Value
Package / Case 0606, Concave
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 125°C
Number of Resistors 2
Number of Pins 4
Mounting Type Surface Mount
Height - Seated (Max) 0.030' (0.75mm)
Circuit Type Isolated
Base Product Number CAT16
Applications -

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8533.10.0057

Frequently Asked Questions(FAQ)

What are the thermal management considerations when using the CAT16-681J2LF in high-density PCB layouts?
The CAT16-681J2LF dissipates 62.5 mW per element and operates across a -55°C to +125°C range with a 200 PPM/°C temperature coefficient. In dense layouts, thermal coupling between the two isolated resistors can cause localized temperature gradients. The 0606 package's 0.5 mm height limits convective cooling, making trace routing and copper area distribution critical. When both resistors operate near their 62.5 mW rating simultaneously, internal temperatures can exceed ambient by 10–15°C depending on board airflow. For precision applications requiring <1% accuracy, either derating to 80% of power rating or spacing the CAT16-681J2LF away from heat sources becomes necessary to maintain temperature coefficient drift below ±1%.
How does the 5% tolerance of the CAT16-681J2LF compare to discrete resistor stacks for impedance matching networks?
The CAT16-681J2LF's 5% tolerance is suitable for non-critical biasing and pull-down networks but introduces cumulative error in impedance matching applications. A single CAT16-681J2LF may deviate ±34 ohms from the 680 Ω nominal value. When two CAT16-681J2LF units are cascaded for ratio-based circuits, worst-case matching error reaches ±5% on each stage. Discrete 1% resistors in equivalent footprints offer tighter tolerance but occupy more board area. The CAT16-681J2LF's advantage lies in space efficiency and consistent matching between its internal pair; the isolated circuit topology means the two 680 Ω resistors track each other more reliably than separate components, reducing relative error to <1% under thermal variation.
Can the CAT16-681J2LF operate reliably in automotive under-hood environments with sustained 125°C temperatures?
The CAT16-681J2LF is rated to +125°C maximum, making it marginal for continuous under-hood operation where localized temperatures frequently exceed 130°C near power dissipation zones. The 200 PPM/°C temperature coefficient causes 1% resistance change per 50°C rise above 25°C; at 125°C, the CAT16-681J2LF exhibits approximately +2% drift from room-temperature calibration. Automotive designs should either derate ambient to 100°C maximum operational assumption or verify circuit function with +2% tolerance stack-up. The 50 V voltage rating is adequate for 12 V/24 V rail applications, but the thermal stress shortens component life. For sustained 125°C exposure, ruggedized resistor networks with extended temperature qualification or discrete precision resistors rated to 150°C+ are preferred alternatives.
What is the recommended lead spacing and PCB trace width for the CAT16-681J2LF to minimize parasitic inductance in high-frequency applications?
The CAT16-681J2LF features 0.8 mm lead spacing in the 0606 package, creating approximately 0.8–1.2 nH of loop inductance per connection when standard PCB trace widths (0.15–0.25 mm) and vias are used. In circuits operating above 100 MHz, this parasitic inductance can resonate with decoupling capacitance, introducing impedance peaking. Minimum parasitic effects are achieved by using 0.3–0.4 mm trace widths with ground plane proximity and via placement within 0.5 mm of the pad. The isolated topology of the CAT16-681J2LF allows independent routing of each resistor pair; separating the two paths prevents coupling-induced crosstalk. For RF or high-speed digital biasing, trace lengths should be kept <10 mm from signal sources to the CAT16-681J2LF to preserve attenuation characteristics below self-resonant frequency.
How does the CAT16-681J2LF perform in power-gating and dynamic load-switching circuits compared to larger array packages?
The CAT16-681J2LF's 62.5 mW per-element rating limits its application in primary load-path resistors but suits gate-drive bias networks and pull-down functions in power-gating architectures. The compact 0606 footprint and 4-pin configuration reduce circuit trace length, lowering loop inductance during transient switching. In MOSFET gate-drive circuits, the CAT16-681J2LF's pair of 680 Ω resistors can perform voltage division or parallel-combined pull-down duty; total current capacity reaches 147 mA at 50 V maximum, adequate for typical gate charges of 10–50 nC. Larger 16-pin resistor arrays offer higher per-element power ratings (100+ mW) but occupy 2–3 times the board area. The CAT16-681J2LF is optimal for space-constrained designs where transient switching current remains below 150 mA; designs requiring sustained high current dissipation should upgrade to power resistor networks.
What packaging and reel configurations are available for the CAT16-681J2LF, and how do they affect supply chain flexibility?
The CAT16-681J2LF is available in Cut Tape, MouseReel, and Reel packaging formats, offering flexibility for prototype through high-volume production. Cut Tape suits low-volume and rework scenarios, with 5–10 unit quantities available immediately. MouseReel format reduces tape packaging waste and enables semi-automated component kitting for assembly lines producing <10k units annually. Standard Reel format (typically 3,000–5,000 units per reel) optimizes cost-per-unit and supports full-line SMT pick-and-place equipment integration. The CAT16-681J2LF's 0606 package is compatible with industry-standard 8 mm and 12 mm feeder widths, reducing changeover time during production runs. Sourcing the CAT16-681J2LF across multiple packaging options allows cost optimization: MouseReel purchasing reduces carrying inventory for mid-production volumes, while bulk Reel orders lower per-unit cost when demand forecasts support minimum order quantities.
Does the CAT16-681J2LF meet RoHS compliance requirements for consumer and industrial applications?
The CAT16-681J2LF carries RoHS-E certification, confirming compliance with EU Directive 2011/65/EU and exemptions for lead-based soldering in high-reliability applications. This designation indicates the component contains no lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE in excess of specified thresholds. For consumer electronics, IoT devices, and industrial equipment sold in EU markets, the CAT16-681J2LF qualifies for unrestricted design-in without additional environmental documentation. The RoHS-E rating does not impose thermal cycle or vibration restrictions; reliability is equivalent to non-RoHS variants under specified operating conditions. Medical device manufacturers should verify that the CAT16-681J2LF is registered in their approved component database, as some medical OEMs require IPC-A-610 workmanship certification beyond baseline RoHS compliance. The component's 0606 package and SMT termination support lead-free solder processes (SAC305 or equivalent) without degraded mechanical performance.
How should the CAT16-681J2LF be specified in analog signal conditioning circuits to minimize DC offset and noise contribution?
In analog front-end applications, the CAT16-681J2LF's 5% tolerance and 200 PPM/°C drift introduce cumulative error in precision voltage dividers and biasing networks. A single CAT16-681J2LF resistor deviation of ±34 Ω translates directly to ±0.05 V offset error in a 680 Ω bias network with 5 V reference. For <0.1% DC offset specification, designs should trim the CAT16-681J2LF output using operational amplifier feedback or post-calibration. The isolated pair topology of the CAT16-681J2LF supports ratiometric scaling, where temperature drift cancels if both resistors remain thermally coupled. Noise contribution from the CAT16-681J2LF is negligible in passive networks; Johnson noise at 25°C is approximately 15 nV/√Hz per resistor. In low-noise op-amp circuits operating below 1 MHz, the CAT16-681J2LF's noise floor remains 20+ dB below typical op-amp input-referred noise. For precision applications exceeding ±1% stability over temperature, higher-grade 0.1% tolerance resistor arrays or active compensation circuits are necessary.
What soldering profile and reflow conditions are optimal for the CAT16-681J2LF to prevent solder joint degradation?
The CAT16-681J2LF's 0606 package and 0.5 mm height require careful reflow profile optimization to achieve reliable solder joints while avoiding thermal shock. Peak reflow temperature should not exceed 260°C for more than 30 seconds total; exceeding this window can cause solder voiding and internal die fracture in the compact package. Ramp rate during heating should be controlled to 3–5°C per second to prevent solder paste spattering and component tombstoning. The CAT16-681J2LF's low thermal mass requires slower cooling rates (2–3°C/second) compared to larger components, preventing solder joint brittleness. Lead-free solder (SAC305) creates stronger metallurgical bonds than lead-based alternatives, but residual flux can accumulate in the 0.8 mm lead spacing, necessitating aqueous or weak-acid cleaning post-reflow. Underfill or conformal coating is optional but recommended for high-reliability applications; the CAT16-681J2LF's isolation between resistor pairs means failure of one element does not short the other, reducing thermal runaway risk even without coating.
How does the CAT16-681J2LF's isolation topology affect circuit protection and fault tolerance in redundant sensor or multi-channel systems?
The CAT16-681J2LF's isolated circuit topology means the two internal 680 Ω resistors operate independently with separate current paths; failure or degradation of one resistor does not directly affect the other. In redundant sensor conditioning circuits, this isolation allows each resistor to bias a separate signal chain without cross-talk. If one channel experiences overvoltage or excessive current injection, the CAT16-681J2LF's isolated structure prevents fault propagation to the companion resistor. Maximum voltage rating of 50 V per element protects against transient over-voltages up to 50 V; exceeding this causes permanent resistance shift or open-circuit failure. In safety-critical applications such as automotive or industrial controls, the CAT16-681J2LF can be implemented in dual-channel architectures where each of the two resistor pairs monitors independent analog signals. Circuit designs should incorporate TVS diodes in parallel with the CAT16-681J2LF at each input node to clamp transients below the 50 V absolute maximum rating, ensuring robustness in high-noise environments.

Parts with Similar Specifications

The three parts on the right have similar specifications to Bourns Inc. CAT16-681J2LF

Product Attribute CAT16-682J2LF CAT16-681J4LF CAT16-681J8LF CAT16-680J4LF
Part Number CAT16-682J2LF CAT16-681J4LF CAT16-681J8LF CAT16-680J4LF
Manufacturer Bourns Inc. Bourns Inc. Bourns Inc. Bourns Inc.
Power Per Element - - - -
Tolerance - - - -
Temperature Coefficient - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Series - - - -
Size / Dimension - - - -
Height - Seated (Max) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Applications - - - -
Circuit Type - - - -
Resistor Matching Ratio - - - -
Number of Resistors - - - -
Resistor-Ratio-Drift - - - -
Number of Pins - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Resistance (Ohms) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)

CAT16-681J2LF Datasheet PDF

Download CAT16-681J2LF pdf datasheets and Bourns Inc. documentation for CAT16-681J2LF - Bourns Inc..

Datasheets
Cylindrical Battery Holders.pdf
PCN Obsolescence/ EOL
Cylindrical Battery Holders.pdf
HTML Datasheet
Cylindrical Battery Holders.pdf
Environmental Information
RoHS CAT10, CAT16, CAT25, CAYxx, CHP, CHV Series.pdf Bourns REACH.pdf

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CAT16-681J2LF Image

CAT16-681J2LF

Bourns Inc.
98D-CAT16-681J2LF

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