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not a drop-in where the original's construction was chosen for them","power rating not comparable at the original's rating temperature: the original is rated 3 W at 70 degC, and the substitute is rated at 25 degC and its record states no derating curve above that — confirm the substitute's derating from its datasheet","the original states a TCR of +/-200 ppm/K; the substitute's record states none — its drift over temperature is unknown; confirm it from the datasheet","the original's maximum working voltage is 300 V; the substitute's record states none — confirm it from the datasheet","mount type not established (original: leaded, substitute: not stated) — confirm SMD vs through-hole from the datasheets","mechanical dimensions unavailable for the substitute — footprint fit could not be verified; confirm it fits the original's land pattern","the substitute's record states no height (the original is 25 mm tall), so vertical clearance could not be verified; confirm it from the datasheet","rated only to +125 degC vs the original's +250 degC — verify the enclosure ambient"],"params":[{"name":"value","verdict":"pass"},{"name":"technology","verdict":"warn"},{"name":"power_rating","verdict":"unverified"},{"name":"tolerance_pct","verdict":"pass"},{"name":"tcr","verdict":"unverified"},{"name":"temp_min_C","verdict":"pass"},{"name":"temp_max_C","verdict":"fail"},{"name":"max_voltage_V","verdict":"unverified"},{"name":"mounting","verdict":"unverified"},{"name":"footprint","verdict":"unverified"},{"name":"height","verdict":"unverified"}],"penalty":5.5,"status":"partial","row":{"current_sense":false,"derating_amplitude":null,"derating_temperature":null,"family":"","heightM":null,"is_production":true,"lengthM":null,"lineno":4564,"manufacturer":"Bourns","max_voltage":null,"mpn":"PWR263S-35-3000J","power_rating":35,"power_rating_temperature":25,"pulse_withstanding":false,"resistance":300,"srcLength":1030,"srcOffset":6649010,"tcr":null,"technology":"thickFilm","temp_max_c":125,"temp_min_c":-55,"tolerance":0.05,"widthM":null},"specs":{"mpn":"PWR263S-35-3000J","length_m":null,"width_m":null,"height_m":null,"case_code":"","mount":"","lead_pitch_m":null,"is_production":true,"provenance_retracted":false,"box_axes_ambiguous":false,"value_si":300,"power_rating":35,"tolerance_pct":5,"family":"","power_rating_temperature":25,"derating_temperature":null,"derating_amplitude":null,"technology":"thickFilm","tcr":null,"temp_min_C":-55,"temp_max_C":125,"current_sense":false,"pulse_withstanding":false,"max_voltage_V":null},"permalink":"https://kelvin.openconverters.com/part/resistor/PWR263S-35-3000J?manufacturer=Bourns","_dataVersion":"103754c4b2cacfcb"},{"mpn":"MFR200JT-73-300R","manufacturer":"YAGEO","_key":"YAGEO␟MFR200JT-73-300R","direction":"downgrade","footprint":"unknown","grade":"major_review","_height_fit":"unknown","notes":["resistor technology differs: metalOxide -> thinFilm — a different construction class, with different TCR, noise, long-term stability and pulse behaviour; 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