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Home Products Resistors Chip Resistor - Surface Mount~~M55342E06B1B21RBS~~

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M55342E06B1B21RBS - Vishay Dale Thin Film

Manufacturer Part Number: M55342E06B1B21RBS

Manufacturer: Vishay Dale / Thin Film

Allelco Part Number: 98D-M55342E06B1B21RBS

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 33,401 pcs available, New & Original

Parts Description: M55342E 25PPM 0705 1.21K 0.1% R

Package: Tape & Reel (TR)

Data sheet: M55342E06B1B21R.pdf

Datasheets
E/H (Military M/D55342) Series.pdf

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Unit Price: $12.909
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Specifications

M55342E06B1B21RBS Tech Specifications
Vishay Dale Thin Film - M55342E06B1B21RBS technical specifications, attributes, parameters and parts with similar specifications to Vishay Dale Thin Film - M55342E06B1B21RBS

Product Attribute	Attribute Value
Manufacturer	Vishay Dale / Thin Film
Series	*

Product Attribute	Attribute Value
Package	Tape & Reel (TR)
Base Product Number	M55342

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
Moisture Sensitivity Level (MSL)	1 (Unlimited)
ECCN	EAR99
HTSUS	8533.21.0030

Frequently Asked Questions(FAQ)

What thermal coefficient specifications should I expect from the M55342E06B1B21RBS, and how does it affect long-term circuit stability?: The M55342E06B1B21RBS operates at 25 PPM/°C thermal coefficient, which defines its resistance drift across the military-grade operating temperature range. At 25 PPM/°C, a 1.21K resistor will shift approximately 30 ohms per 100°C of temperature change—a 2.5% total drift from -55°C to +125°C. This specification places the M55342E06B1B21RBS in the precision thin-film category, making it suitable for analog signal conditioning, instrumentation amplifiers, and temperature-compensated divider networks where passive temperature drift must be controlled without active trimming.

How does the 0.1% tolerance of the M55342E06B1B21RBS compare to thick-film alternatives for gain-setting applications?: The M55342E06B1B21RBS delivers 0.1% initial tolerance, versus 1–5% for standard thick-film resistors, reducing gain error in transimpedance amplifiers and precision logarithmic circuits by an order of magnitude without requiring hand-selection or trimming. For a transimpedance amplifier with feedback resistor M55342E06B1B21RBS at 1.21K, gain accuracy approaches ±0.1% versus ±2–3% with thick-film, eliminating the need for external calibration trimmers in moderate-precision applications. Combined with 25 PPM/°C drift, the M55342E06B1B21RBS enables single-resistor feedback designs in data acquisition front-ends without post-manufacture adjustment.

What packaging constraints should I consider when routing the M55342E06B1B21RBS in a 0705 footprint on high-density boards?: The M55342E06B1B21RBS in 0705 form factor measures 1.8 × 1.3 mm with 0.5 mm lead pitch, fitting tightly in modern surface-mount layouts but requiring careful trace routing to avoid thermal coupling with adjacent power devices or heating elements. When placing the M55342E06B1B21RBS near switching regulators or PWM stages, maintain minimum 2 mm spacing to prevent localized temperature gradients that would exceed the 25 PPM/°C compensation margin. The thin-film construction of the M55342E06B1B21RBS makes it sensitive to substrate-coupled thermal transients; ground plane continuity directly beneath the component helps distribute heat and stabilizes resistance during transient load changes.

Is the M55342E06B1B21RBS suitable for replacing thick-film 1.21K resistors in legacy designs without re-qualification?: Direct substitution of the M55342E06B1B21RBS for thick-film equivalents typically requires design review rather than drop-in replacement. While the M55342E06B1B21RBS matches the 1.21K nominal value and 0705 footprint, its superior tolerance (0.1% vs. 1–2% legacy parts) and lower temperature coefficient (25 PPM/°C vs. 100+ PPM/°C) will shift circuit operating points toward nominal design specs. In precision analog circuits, this can cause unexpected closed-loop gain changes or offset adjustments. The M55342E06B1B21RBS should be qualified through functional testing, especially in feedback networks, automatic gain control loops, or sensor signal chains where tolerance stack-up was previously compensated through system trimming.

What is the noise performance of the M55342E06B1B21RBS, and when would it become a limiting factor in low-noise preamplifier design?: Thin-film resistor M55342E06B1B21RBS exhibits thermal noise dominated by Johnson noise at ~13.2 nV/√Hz at room temperature (for 1.21K). This becomes relevant in noise-critical circuits when amplified noise floor must remain below 100 nV/√Hz. For a low-noise transimpedance amplifier using M55342E06B1B21RBS as feedback, the resistor contributes ~1.6 µV RMS integrated noise (1 Hz to 100 kHz), acceptable for most medical instrumentation and seismic sensing circuits. However, when M55342E06B1B21RBS is used in the input network of a photodiode amplifier targeting <50 nV/√Hz total noise, additional parallel noise shaping or higher feedback resistance becomes necessary to avoid resistor-dominated noise floor.

How does moisture absorption affect the M55342E06B1B21RBS given its MSL 1 rating, and what assembly precautions apply?: The M55342E06B1B21RBS carries MSL 1 (Unlimited) moisture sensitivity, meaning the component absorbs minimal moisture during storage and does not require desiccant packaging or floor-life time tracking. Unlike higher MSL devices, the M55342E06B1B21RBS can be stored at room conditions indefinitely without bake-out procedures before reflow. However, the thin-film substrate of the M55342E06B1B21RBS remains mechanically stress-sensitive during thermal cycling; soldering profiles with rapid ramp rates (>3°C/second) may induce micro-cracking in the resistive film. IPC-A-610 Class 2 reflow profiles with controlled heating ramps (2–3°C/second) are recommended even though the M55342E06B1B21RBS does not require pre-solder drying.

What is the frequency response limitation of the M55342E06B1B21RBS, and does parasitic inductance affect RF or high-speed switching applications?: The M55342E06B1B21RBS, as a thin-film chip resistor in 0705 geometry, exhibits parasitic series inductance of approximately 0.3–0.5 nH, introducing impedance rise above 100 MHz. This parasitic becomes significant in RF circuits or fast-transient switching networks; for example, at 500 MHz, the M55342E06B1B21RBS presents ~0.95 ohms reactance in addition to the 1.21K nominal resistance. In high-speed digital termination networks operating above 1 GHz, the M55342E06B1B21RBS is unsuitable without parallel damping or frequency-compensated matching networks. For broadband signal chains or fast logic switching, alternative resistor geometries with lower inductance or distributed resistor networks are preferable to the M55342E06B1B21RBS.

How should I verify that the M55342E06B1B21RBS meets RoHS non-compliance status in my procurement workflow, and what are the material implications?: The M55342E06B1B21RBS is marked RoHS non-compliant, indicating it may contain lead solder (typically 63/37 Sn/Pb) and potentially other restricted substances like cadmium in plating. Organizations subject to EU RoHS directives or equivalent regulations cannot integrate the M55342E06B1B21RBS into products marketed in restricted jurisdictions. Procurement must segregate the M55342E06B1B21RBS to non-regulated applications (industrial, aerospace, or legacy military designs) or verify documented exemption status with end customers. The M55342E06B1B21RBS should not be cross-referenced against RoHS-compliant alternatives in automated sourcing systems without explicit management approval, as material composition affects supply chain compliance and end-of-life disposition.

What is the power dissipation rating for the M55342E06B1B21RBS in the 0705 package, and how does it compare to larger case sizes?: The M55342E06B1B21RBS in 0705 form factor is typically rated for 0.1 W continuous power dissipation under free-air conditions (25°C ambient). Derating curves for the M55342E06B1B21RBS show approximately 50% power reduction per 70°C rise above ambient, limiting dissipation to roughly 50 mW at 95°C. For current-sense or load-resistor applications, this constraint is binding; a 1.21K sense resistor in the M55342E06B1B21RBS package can tolerate only 11 mA continuous current (P = I²R = 0.011² × 1210 ≈ 0.15 W, exceeding rating). For higher current sensing, 1206 or 1210 resistor packages with proportionally higher power ratings are necessary, though precision specifications of the M55342E06B1B21RBS would be sacrificed.

How does the M55342E06B1B21RBS perform in cryogenic or high-temperature aerospace applications, and are there qualification requirements?: The M55342E06B1B21RBS is specified for -55°C to +125°C operating range, covering most avionics and space-qualified environments. At cryogenic temperatures below -55°C, the M55342E06B1B21RBS exhibits non-linear resistance changes as quantum effects emerge; extrapolation beyond the stated range is not supported by manufacturer data. For aerospace platforms requiring -65°C or lower operation, the M55342E06B1B21RBS requires independent characterization testing or substitution with cryogenic-rated resistor variants. Similarly, sustained operation above +125°C (common in high-power RF amplifiers or engine bay electronics) violates the M55342E06B1B21RBS specification envelope. Military-grade applications using the M55342E06B1B21RBS typically require MIL-PRF-55342 certification review and design margin analysis to ensure tolerance and temperature drift remain acceptable across the actual operating temperature excursion.

When should I select the M55342E06B1B21RBS over a precision potentiometer or digitally trimmed resistor network for tuning-sensitive circuits?: The M55342E06B1B21RBS is fixed-value and offers no adjustment mechanism, making it unsuitable for post-manufacture tuning or field calibration. However, the M55342E06B1B21RBS excels in circuits where stability and low temperature drift are prioritized over adjustability—precision analog filters, frequency references, and medical sensor front-ends. Compared to resistor networks with digital potentiometers, the M55342E06B1B21RBS provides superior noise performance (no switching transients), faster settling (no digital delay), and lower cost-per-node in high-volume designs. The trade-off is inflexibility: the M55342E06B1B21RBS requires accurate initial design calculation and component selection to match target specifications, whereas digitally trimmed alternatives tolerate design margin and enable software-based compensation.

What soldering techniques minimize stress-induced drift in the M55342E06B1B21RBS thin-film resistive element?: The M55342E06B1B21RBS thin-film structure is mechanically delicate; excessive solder joint stress during reflow can introduce permanent resistance shifts of 0.05–0.3%, eroding the 0.1% initial tolerance benefit. Controlled reflow with slow heating ramps (2–2.5°C/second), peak temperatures of 250–260°C, and time-above-liquidus of 60–90 seconds are recommended. Avoid hand-soldering the M55342E06B1B21RBS; iron-based techniques introduce rapid thermal gradients and localized film stress. Underfill or potting compounds applied after reflow can mechanically stabilize the M55342E06B1B21RBS, reducing long-term drift caused by vibration or thermal cycling; this is particularly valuable in automotive or industrial environments where the component experiences sustained mechanical stress.

How does the M55342E06B1B21RBS track against reference resistors in precision current-mirror or Howland pump-type circuits?: In monolithic current mirrors, resistance matching between the M55342E06B1B21RBS and an identical reference resistor depends on identical temperature and aging history. When two M55342E06B1B21RBS units are mounted adjacent to each other with matched thermal environment, ratio accuracy is determined primarily by initial tolerance mismatch (±0.1%) rather than temperature drift, since both resistors experience similar temperature excursions at 25 PPM/°C. For Howland pump transimpedance designs using multiple M55342E06B1B21RBS resistors in the feedback network, the 0.1% tolerance ensures gain flatness better than ±0.3%, enabling low-distortion summing without trim potentiometers. Critical pairings of M55342E06B1B21RBS units should be selected from the same manufacturing batch and mounted symmetrically to maximize tracking and minimize common-mode errors over temperature.

Parts with Similar Specifications

The three parts on the right have similar specifications to Vishay Dale Thin Film M55342E06B1B21RBS

Product Attribute
Part Number	M55342E06B1B21RTS	M55342E06B1B21RWS	M55342E06B1B20RTS	M55342E06B1B20RWS
Manufacturer	Vishay Dale Thin Film	Vishay Dale Thin Film	Vishay Dale Thin Film	Vishay Dale Thin Film
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Series	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)

M55342E06B1B21RBS Datasheet PDF

Download M55342E06B1B21RBS pdf datasheets and Vishay Dale Thin Film documentation for M55342E06B1B21RBS - Vishay Dale Thin Film.

Datasheets: E/H (Military M/D55342) Series.pdf

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America	United States	5
America	Brazil	7
Europe	Germany	5
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Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
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Middle East	Israel	6

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1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

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