Equivalent & Substitute Parts for UP0440100L

Part Overview

The UP0440100L is a dual PNP bipolar junction transistor (BJT) array manufactured by Panasonic Electronic Components, designed for surface mount applications in the SSMINI6-F1 package. This component operates at a maximum collector-emitter voltage of 50V with a collector current rating of 100mA and a maximum power dissipation of 125mW. The device is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and production requirements. Substitute parts must maintain electrical compatibility across critical parameters including voltage ratings, current capacity, and thermal characteristics while accommodating available packaging options.

Key Parameters

Parameter	Value	Unit
Transistor Type	2 PNP (Dual)	—
Current - Collector (Ic) (Max)	100	mA
Voltage - Collector Emitter Breakdown (Max)	50	V
Vce Saturation (Max) @ Ib, Ic	500mV @ 10mA, 100mA	—
Current - Collector Cutoff (Max)	100	µA
DC Current Gain (hFE) (Min) @ Ic, Vce	180 @ 2mA, 10V	—
Power - Max	125	mW
Frequency - Transition	80	MHz
Operating Temperature (TJ)	125	°C
Mounting Type	Surface Mount	—
Package / Case	SOT-563, SOT-666	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the UP0440100L is determined by electrical parameter compatibility across five critical dimensions:

Voltage Rating Compatibility: Substitute parts must support a maximum collector-emitter breakdown voltage of at least 50V. Parts rated at 45V operate below the original specification and are acceptable only where circuit design margins accommodate the reduced voltage headroom.

Current Rating Compatibility: The maximum collector current of 100mA establishes the baseline requirement. Substitute parts rated at 100mA or higher maintain direct compatibility. Parts with higher current ratings (such as 150mA) provide additional design margin without functional degradation.

Power Dissipation Compatibility: The original 125mW power rating defines thermal operating limits. Substitute parts with equal or higher power ratings (150mW, 200mW, or 300mW) accommodate the same thermal environment without derating.

Frequency Performance Compatibility: The 80MHz transition frequency establishes minimum switching speed requirements. Substitute parts with transition frequencies of 100MHz or higher maintain or exceed performance specifications.

Package and Mounting Compatibility: The original SSMINI6-F1 package corresponds to SOT-563 and SOT-666 case styles. Substitute parts must be available in one of these package variants to ensure PCB footprint compatibility.

Parameter Comparison

Parameter	UP0440100L (Panasonic)	BC857BV,115 (Nexperia)	BC857BV-7 (Diodes)	BC857BV-TP (MCC)	BCM857BV,115 (Nexperia)	BCM857BV,315 (Nexperia)	EMT1T2R (Rohm)
Transistor Type	2 PNP (Dual)	2 PNP (Dual)	2 PNP (Dual)	2 PNP (Dual)	2 PNP (Dual) Matched Pair	2 PNP (Dual) Matched Pair	2 PNP (Dual)
Current - Collector (Ic) (Max)	100 mA	100 mA	100 mA	100 mA	100 mA	100 mA	150 mA
Voltage - Collector Emitter Breakdown (Max)	50 V	45 V	45 V	45 V	45 V	45 V	50 V
Vce Saturation (Max) @ Ib, Ic	500mV @ 10mA, 100mA	400mV @ 5mA, 100mA	400mV @ 5mA, 100mA	400mV @ 5mA, 100mA	400mV @ 5mA, 100mA	400mV @ 5mA, 100mA	500mV @ 5mA, 50mA
Current - Collector Cutoff (Max)	100 µA	15 nA (ICBO)	15 nA (ICBO)	15 nA (ICBO)	15 nA (ICBO)	15 nA (ICBO)	100 nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce	180 @ 2mA, 10V	200 @ 2mA, 5V	220 @ 2mA, 5V	200 @ 2mA, 5V	200 @ 2mA, 5V	200 @ 2mA, 5V	120 @ 1mA, 6V
Power - Max	125 mW	200 mW	150 mW	150 mW	300 mW	300 mW	150 mW
Frequency - Transition	80 MHz	100 MHz	100 MHz	100 MHz	175 MHz	175 MHz	140 MHz
Operating Temperature (TJ)	125 °C	150 °C	-55 to 150 °C	-55 to 150 °C	150 °C	150 °C	150 °C
Package / Case	SOT-563, SOT-666	SOT-563, SOT-666	SOT-563, SOT-666	SOT-563, SOT-666	SOT-563, SOT-666	SOT-563, SOT-666	SOT-563, SOT-666
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Voltage-Matched, Active Status):

The EMT1T2R from Rohm Semiconductor is the preferred substitute when voltage headroom is critical. This part maintains the original 50V collector-emitter breakdown voltage specification while providing enhanced current capacity (150mA) and improved thermal performance (150mW). The EMT1T2R carries Active product status and ROHS3 compliance, supporting long-term design continuity.

Secondary Substitutes (Reduced Voltage, Active Status):

The BC857BV-7 from Diodes Incorporated and BC857BV-TP from Micro Commercial Co are functionally equivalent alternatives where circuit design accommodates a 45V maximum voltage rating. Both parts carry Active product status, supporting new design implementations. The BC857BV-7 provides extended operating temperature range (-55°C to 150°C) compared to the original specification. The BC857BV-TP offers the highest inventory availability (58,400 pieces) among active alternatives.

Tertiary Substitutes (Reduced Voltage, Legacy Status):

The BC857BV,115 from Nexperia USA Inc. and matched-pair variants BCM857BV,115 and BCM857BV,315 operate at 45V maximum voltage. These parts carry "Not For New Designs" product status and are suitable only for sustaining production of existing designs. The BCM857BV variants provide matched-pair characteristics and enhanced frequency performance (175MHz) for applications requiring precision gain matching.

Voltage Derating Consideration:

All BC857 variants operate at 45V maximum, representing a 5V reduction from the original 50V specification. Circuit designs operating near the 50V limit require evaluation to confirm adequate safety margins at the reduced voltage rating.

Frequently Asked Questions (FAQ)

Q: Can BC857BV,115 directly replace UP0440100L in new designs?

A: No. The BC857BV,115 carries "Not For New Designs" product status and operates at 45V maximum voltage compared to the original 50V specification. For new designs, use BC857BV-7 or BC857BV-TP (both Active status) or EMT1T2R (Active status, 50V rated).

Q: What is the primary difference between BC857BV-7 and BC857BV-TP?

A: Both parts are electrically equivalent with identical electrical parameters. BC857BV-7 is manufactured by Diodes Incorporated; BC857BV-TP is manufactured by Micro Commercial Co. BC857BV-TP offers significantly higher inventory availability (58,400 pieces versus 4,100 pieces).

Q: Why do BCM857BV,115 and BCM857BV,315 have higher power ratings (300mW) than the original part (125mW)?

A: These are matched-pair variants designed for precision applications requiring gain matching between transistor elements. The higher power rating reflects the dual-transistor configuration and does not indicate increased power consumption per transistor. Both parts carry "Not For New Designs" status.

Q: Is the EMT1T2R package compatible with the original SSMINI6-F1 footprint?

A: The EMT1T2R uses the EMT6 package, which corresponds to SOT-563 and SOT-666 case styles, matching the original part's package compatibility. PCB footprint verification is required for specific layout implementations.

Q: What is the significance of the 45V versus 50V voltage rating difference?

A: The 5V difference represents a reduction in maximum collector-emitter breakdown voltage. Circuits designed to operate near 50V require evaluation to confirm adequate safety margins. Circuits with 45V or lower operating points experience no functional impact.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 Compliant status. The original UP0440100L does not specify RoHS compliance in the provided data.

Q: Which substitute part offers the best thermal performance?

A: The BCM857BV,115 and BCM857BV,315 matched-pair variants provide the highest power dissipation rating (300mW). For single-pair applications, the BC857BV,115 (200mW) and EMT1T2R (150mW) offer enhanced thermal capacity compared to the original 125mW specification.

Q: Can I use EMT1T2R in applications requiring matched-pair characteristics?

A: The EMT1T2R is a standard dual PNP transistor array without matched-pair specifications. For applications requiring precision gain matching, use BCM857BV,115 or BCM857BV,315 variants.

Q: What is the operating temperature range for BC857BV-7?

A: The BC857BV-7 operates across -55°C to 150°C junction temperature, providing extended low-temperature performance compared to the original UP0440100L specification (125°C maximum).

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