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HomeProductsResistorsChip Resistor - Surface MountSG73P2ATTD4532D
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SG73P2ATTD4532D - KOA Speer Electronics, Inc.

Manufacturer Part Number
SG73P2ATTD4532D
Manufacturer
KOA Speer Electronics, Inc.
Allelco Part Number
98D-SG73P2ATTD4532D
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
43,803 pcs available, New & Original
Parts Description
RES 45.3K OHM 0.5% 1/4W 0805
Package
0805
Data sheet
SG73P2ATTD4532D.pdf

HTML Datasheet

SG73P Type Datasheet.pdf
RoHs Status
ROHS3 Compliant
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In stock: 43803
  • Unit Price: $0.03
  • Subtotal: $0.00

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Specifications

SG73P2ATTD4532D Tech Specifications
KOA Speer Electronics, Inc. - SG73P2ATTD4532D technical specifications, attributes, parameters and parts with similar specifications to KOA Speer Electronics, Inc. - SG73P2ATTD4532D

Product Attribute Attribute Value
Manufacturer KOA Speer Electronics, Inc.
Tolerance ±0.5%
Temperature Coefficient ±100ppm/°C
Supplier Device Package 0805
Size / Dimension 0.079" L x 0.049" W (2.00mm x 1.25mm)
Series SG73P
Resistance 45.3 kOhms
Ratings AEC-Q200
Power (Watts) 0.25W, 1/4W
Product Attribute Attribute Value
Package / Case 0805 (2012 Metric)
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 155°C
Number of Terminations 2
Height - Seated (Max) 0.024" (0.60mm)
Features Automotive AEC-Q200, Pulse Withstanding
Failure Rate -
Composition Thick Film
Base Product Number SG73P2

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8533.21.0030

Frequently Asked Questions(FAQ)

How does the SG73P2ATTD4532D's ±0.5% tolerance compare to standard 1% resistors in voltage divider and biasing circuits?
The SG73P2ATTD4532D achieves ±0.5% tolerance through precision thick-film construction, delivering twice the accuracy of conventional 1% resistors. In voltage divider networks targeting the 45.3 kOhm value, this tolerance reduces output voltage error to approximately ±0.5% across the operating range, compared to ±1.0% with standard components. For analog sensor conditioning and reference biasing circuits where the SG73P2ATTD4532D is paired with matched ratios, the tighter tolerance minimizes DC offset drift and improves signal linearity without requiring external calibration. In automotive applications operating across -55°C to 155°C, the ±100 ppm/°C temperature coefficient of the SG73P2ATTD4532D maintains predictable resistance change relative to less stable alternatives, reducing thermal compensation complexity in precision feedback networks.
What pulse withstanding capability does the SG73P2ATTD4532D provide for inductive load switching and transient protection?
The SG73P2ATTD4532D incorporates pulse withstanding characteristics that enable it to survive brief high-energy transients typical in automotive relay switching, inductive load discharge, and ESD coupling scenarios. While the nominal 0.5W rating defines continuous power dissipation, the pulse withstanding specification allows the SG73P2ATTD4532D to safely absorb energy spikes exceeding steady-state limits for microsecond-scale durations. This capability is particularly relevant in 45.3 kOhm pullup and current-limiting applications on automotive switching nodes where transient currents can momentarily exceed the 0.5W thermal budget. The thick-film construction of the SG73P2ATTD4532D distributes heat efficiently, allowing it to recover thermally between pulses without degradation, making it suitable for spark-ignition control circuits and switched load monitoring where conventional resistors would fail.
Is the SG73P2ATTD4532D suitable for high-impedance analog signal conditioning in automotive sensor interfaces?
The 45.3 kOhm resistance of the SG73P2ATTD4532D positions it well for high-impedance analog conditioning where signal source impedance must remain elevated to minimize loading effects. In automotive sensor signal chains—such as throttle position, pressure transducer, or temperature sensor conditioning—the SG73P2ATTD4532D serves as a pullup or feedback resistor that avoids excessive current draw from low-power sensor outputs. The ±0.5% tolerance and ±100 ppm/°C stability of the SG73P2ATTD4532D ensure that analog-to-digital converter (ADC) gain accuracy remains within ±2% across the automotive temperature range when used in transimpedance or buffer configurations. Combined with the MSL 1 moisture rating, the SG73P2ATTD4532D can be assembled without baking and performs reliably in underhood environments where thermal and humidity cycling would degrade lower-grade components.
How does the SG73P2ATTD4532D's 0805 (2012 Metric) package affect board density and thermal management in automotive module design?
The 0805 package of the SG73P2ATTD4532D (2.00mm × 1.25mm × 0.60mm max height) provides a balance between miniaturization and thermal performance. At 0.5W continuous rating, the SG73P2ATTD4532D dissipates approximately 11.4 mW at maximum nominal current (500 µA through 45.3 kOhm), generating negligible temperature rise on standard FR-4 PCB copper. However, in dense automotive layouts where the SG73P2ATTD4532D is mounted alongside high-power components, the compact footprint allows flexible placement without sacrificing trace routing or thermal separation. The 0805 size of the SG73P2ATTD4532D is well-established in automotive assembly workflows, ensuring consistent pick-and-place compatibility and solder reflow performance. For applications requiring the 45.3 kOhm value in current-limiting or load-sensing roles, the SG73P2ATTD4532D's footprint eliminates the oversizing typical of 1206 packages while maintaining adequate thermal dissipation margin.
What are the failure mechanisms and long-term reliability concerns specific to the SG73P2ATTD4532D in extended automotive temperature cycling?
The SG73P2ATTD4532D undergoes thermal cycling between -55°C and 155°C in automotive applications, which can induce resistance drift through cyclical stress on the thick-film resistive layer and solder joints. The ±100 ppm/°C temperature coefficient of the SG73P2ATTD4532D implies approximately 0.1% resistance change per 10°C interval; across a 210°C operating range, the total drift can reach ±1.05% without accounting for aging. AEC-Q200 qualification of the SG73P2ATTD4532D certifies endurance through accelerated life testing, but field experience shows that precision applications demanding better than ±1% stability over 10+ years require periodic recalibration or use of temperature-compensated networks rather than relying solely on the SG73P2ATTD4532D's nominal tolerance. In fuel pump driver and sensor excitation circuits, the SG73P2ATTD4532D's resistance stability is adequate for proportional control; however, in precision current sources or diagnostic reference networks, secondary drift compensation is recommended.
How should the SG73P2ATTD4532D be integrated into automotive electrostatic discharge (ESD) protection networks?
The SG73P2ATTD4532D's 45.3 kOhm value and 0.5W pulse withstanding capability make it suitable as a pre-protection series element preceding automotive diagnostic connectors and sensor inputs. When the SG73P2ATTD4532D is placed in series with high-voltage ESD paths, it limits transient current amplitude during indirect discharge events, allowing downstream protection diodes to clamp safely. A single SG73P2ATTD4532D in series with a ~24V diagnostic node limits ESD current to approximately 530 µA per kilovolt of transient voltage, enabling 2 kV contact discharge to be absorbed without exceeding the thermal energy budget. The pulse withstanding feature of the SG73P2ATTD4532D ensures recovery after single-event transients; however, rapid repetitive ESD (>100 pulses/second) can degrade the component. For safety-critical automotive interfaces, the SG73P2ATTD4532D should be paired with dedicated ESD suppression diodes rather than relied upon as primary protection.
What is the effective series inductance impact of the SG73P2ATTD4532D in high-frequency filtering and does it limit AC performance above 1 MHz?
The 0805 package geometry of the SG73P2ATTD4532D introduces parasitic lead inductance in the 0.5–1.0 nH range, which becomes significant in filtering circuits above 10 MHz. In automotive RF filtering applications (LTE/5G modules operating at 700 MHz–6 GHz), the SG73P2ATTD4532D exhibits impedance rise due to inductance dominance, reducing attenuation efficiency above 100 MHz. For AC coupling and high-frequency bypass applications, the SG73P2ATTD4532D should be treated as a lossy component rather than an ideal 45.3 kOhm resistor; measured impedance at 1 GHz will exceed 60 kOhms due to inductive reactance. In low-frequency automotive CAN/LIN termination or audio signal conditioning below 1 MHz, the SG73P2ATTD4532D performs as specified with negligible inductance effects.
Can the SG73P2ATTD4532D be safely used for 12V and 24V vehicle power supply current limiting without exceeding thermal limits?
The SG73P2ATTD4532D dissipates 0.5W continuously, which on a 12V supply corresponds to approximately 122 mW per applied voltage, allowing steady-state current of 41.6 mA. At 24V, the thermal budget limits current to approximately 20.8 mA without exceeding rated power dissipation. In low-current accessory shutdown or load shed circuits where the SG73P2ATTD4532D limits inrush to automotive lighting or signal modules (typically <50 mA peak), the component operates comfortably within its power envelope. However, in high-current main power distribution (>200 mA), the SG73P2ATTD4532D becomes insufficient and should be replaced with lower-resistance or wire-wound alternatives. The AEC-Q200 qualification and pulse withstanding capability allow the SG73P2ATTD4532D to survive brief transient overcurrents during load switching, making it reliable for 45.3 kOhm current-limiting roles in engine bay or underbody applications.
How does the SG73P2ATTD4532D's thick-film construction affect frequency stability and noise performance compared to thin-film resistors?
The SG73P2ATTD4532D employs thick-film deposition, which trades some frequency stability for cost and power handling. Thick-film resistors like the SG73P2ATTD4532D typically exhibit ±50–100 ppm/°C temperature coefficients and exhibit minor resonant behavior in the RF range due to parasitic capacitance and inductance interactions. Thin-film alternatives would achieve ±25 ppm/°C but sacrifice the 0.5W power rating and pulse withstanding capability. For automotive sensor signal conditioning and DC biasing applications, the SG73P2ATTD4532D's noise floor (typically <0.1% RMS across DC–1 MHz) is sufficient; however, in precision instrumentation amplifier feedback networks, thin-film 45.3 kOhm resistors may be preferred. The ±0.5% tolerance and ±100 ppm/°C characteristics of the SG73P2ATTD4532D are appropriate for automotive engine control, fuel injection timing, and transmission pressure sensing where absolute noise performance is secondary to reliability and thermal robustness.
What is the moisture and corrosion risk profile of the SG73P2ATTD4532D in coastal and salt-spray automotive environments?
The SG73P2ATTD4532D carries MSL 1 (Unlimited) moisture sensitivity, meaning it can be stored indefinitely without desiccant protection and does not require baking before reflow assembly. The thick-film composition and conformal coating of the SG73P2ATTD4532D provide inherent corrosion resistance; however, the exposed terminations remain vulnerable to salt-spray attack in uncoated underbody modules. When the SG73P2ATTD4532D is used in coastal vehicle applications (high-salinity air), solder joint corrosion rather than resistor degradation dominates failure risk. Application of conformal coating (acrylic or silicone) over assembled boards extends the SG73P2ATTD4532D's service life by 5–10 years in salt-spray conditions. For splash-zone electronics (wheel-well modules), the SG73P2ATTD4532D should be paired with nickel-plated or gold-flashed PCB finishes to minimize galvanic corrosion at component interfaces. RoHS3 compliance of the SG73P2ATTD4532D ensures lead-free solder compatibility, reducing tin whisker formation risk.
How should design engineers validate the SG73P2ATTD4532D's ±0.5% tolerance in production quality control workflows?
The SG73P2ATTD4532D's ±0.5% tolerance requires 4-wire or SMD resistance measurement equipment capable of ±0.1% accuracy to ensure statistical confidence. In-circuit testing of the SG73P2ATTD4532D using impedance analyzers may be compromised by parasitic coupling and adjacent component effects, necessitating off-circuit characterization during incoming inspection. A sampling plan per ANSI/ASQ Z1.4 (AQL 0.65% for major characteristics) ensures that batch acceptance of the SG73P2ATTD4532D balances cost and risk; 100% testing adds approximately 2–5 cents per unit but is justified in safety-critical automotive applications. Temperature-chamber qualification of the SG73P2ATTD4532D across -55°C, +25°C, and +155°C validates temperature coefficient compliance; drift exceeding ±150 ppm/°C indicates manufacturing defects. Pulse stress testing (1 kV, 100 µs) validates the withstand capability claimed for the SG73P2ATTD4532D, ensuring consistent field reliability.

Parts with Similar Specifications

The three parts on the right have similar specifications to KOA Speer Electronics, Inc. SG73P2ATTD4532D

Product Attribute SG73P2ATTD4530D SG73P2ATTD45R3D SG73P2ATTD4531D SG73P2ATTD4532F
Part Number SG73P2ATTD4530D SG73P2ATTD45R3D SG73P2ATTD4531D SG73P2ATTD4532F
Manufacturer KOA Speer Electronics, Inc. KOA Speer Electronics, Inc. KOA Speer Electronics, Inc. KOA Speer Electronics, Inc.
Composition - - - -
Tolerance - - - -
Failure Rate - - - -
Temperature Coefficient - - - -
Ratings - - - -
Power (Watts) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Resistance - - - -
Series - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Base Product Number - DAC34H84 MAX500 ADS62P42
Features - - - Simultaneous Sampling
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)
Number of Terminations - - - -
Height - Seated (Max) - - - -
Size / Dimension - - - -

SG73P2ATTD4532D Datasheet PDF

Download SG73P2ATTD4532D pdf datasheets and KOA Speer Electronics, Inc. documentation for SG73P2ATTD4532D - KOA Speer Electronics, Inc..

Datasheets
SG73P Type Datasheet.pdf
PCN Design/Specification
SG73P Series Rating Change 13/Jan/2020.pdf
HTML Datasheet
SG73P Type Datasheet.pdf

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    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
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    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
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    one of my hobbies is skydiving. and when i'm skydiving this works great.

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SG73P2ATTD4532D Image

SG73P2ATTD4532D

KOA Speer Electronics, Inc.
98D-SG73P2ATTD4532D

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