BAP50-03,115 Equivalent & Substitute Parts

Part Overview

The BAP50-03,115 is an RF Diode PIN - Single manufactured by NXP Semiconductors, rated for 50V peak reverse voltage with 50 mA maximum current and 500 mW power dissipation in SOD-323 packaging. This component is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. Substitute parts must maintain electrical performance within the RF frequency range while accommodating available packaging and manufacturing options.

Key Parameters

Parameter	BAP50-03,115
Diode Type	PIN - Single
Voltage - Peak Reverse (Max)	50V
Current - Max	50 mA
Capacitance @ Vr, F	0.35pF @ 5V, 1MHz
Resistance @ If, F	5Ohm @ 10mA, 100MHz
Power Dissipation (Max)	500 mW
Operating Temperature	-65°C ~ 150°C (TJ)
Package / Case	SC-76, SOD-323
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria applied strictly to the provided parameters:

Primary Equivalence Criteria:

Diode Type: PIN - Single (required match)
Voltage - Peak Reverse (Max): 50V minimum
Current - Max: 50 mA minimum
Package / Case: SC-76, SOD-323 (physical compatibility)
Capacitance @ Vr, F: 0.35pF or lower (RF performance)
Resistance @ If, F: 5Ohm or lower (RF performance)

Grouping Logic:

Group 1 (Direct Parametric Equivalents): Parts matching all primary criteria with identical or superior electrical specifications
Group 2 (Functional Alternatives): Parts with higher voltage or current ratings in compatible packaging, suitable where design margins permit
Group 3 (Conditional Substitutes): Parts with different packaging or reduced power dissipation, requiring circuit-level verification

Parameter Comparison

Part Number	Manufacturer	Diode Type	Voltage (Max)	Current (Max)	Capacitance @ Vr	Resistance @ If	Power Dissipation	Package	Product Status
BAP50-03,115	NXP Semiconductors	PIN - Single	50V	50 mA	0.35pF @ 5V	5Ohm @ 10mA	500 mW	SOD-323	Obsolete
BAP51-03,115	NXP USA Inc.	PIN - Single	50V	50 mA	0.35pF @ 5V	2.5Ohm @ 10mA	500 mW	SOD-323	Active
BAP50-03-TP	Micro Commercial Co	PIN - Single	50V	50 mA	0.35pF @ 5V	5Ohm @ 10mA	200 mW	SOD-323	Obsolete
1SV263-TL-E	onsemi	PIN - Single	50V	50 mA	0.4pF @ 50V	4.5Ohm @ 10mA	100 mW	SOT-323	Obsolete
BA592E6327HTSA1	Infineon Technologies	Standard - Single	35V	100 mA	1.1pF @ 3V	500mOhm @ 10mA	Not Specified	SOD-323	Not For New Designs
BA592E6433HTMA1	Infineon Technologies	Standard - Single	35V	100 mA	1.1pF @ 3V	500mOhm @ 10mA	Not Specified	SOD-323	Not For New Designs
BAP51-02-TP	Micro Commercial Co	PIN - Single	60V	50 mA	0.35pF @ 5V	2.5Ohm @ 10mA	715 mW	SOD-523	Obsolete
BAR6503WE6327HTSA1	Infineon Technologies	PIN - Single	30V	100 mA	0.8pF @ 3V	900mOhm @ 10mA	250 mW	SOD-323	Active
MA4P7436-1141T	MACOM Technology Solutions	PIN - Single	75V	150 mA	1pF @ 20V	500mOhm @ 10mA	200 mW	SOD-323	Active
MA4P7437-1141T	MACOM Technology Solutions	PIN - Single	200V	150 mA	0.35pF @ 50V	6Ohm @ 10mA	200 mW	SOD-323	Active
MA4P7438-1141T	MACOM Technology Solutions	PIN - Single	200V	150 mA	0.35pF @ 50V	10Ohm @ 10mA	200 mW	SOD-323	Active

Engineering Selection Recommendations

Recommended Primary Substitute: BAP51-03,115

BAP51-03,115 is the preferred direct replacement. It maintains identical voltage, current, and capacitance specifications while offering superior resistance performance (2.5Ohm vs. 5Ohm) and Active product status. Both parts are ROHS3 compliant with MSL-1 rating. This part is available in Cut Tape and Digi-Reel packaging with 10,697 units in stock.

Secondary Alternatives:

BAP50-03-TP (Micro Commercial Co) provides electrical equivalence with identical capacitance and resistance but reduced power dissipation (200 mW vs. 500 mW). Selection requires verification that circuit power requirements do not exceed 200 mW. Obsolete status limits long-term availability.

MA4P7436-1141T and MA4P7437-1141T (MACOM Technology Solutions) offer Active product status with enhanced voltage ratings (75V and 200V respectively) and higher current capacity (150 mA). These parts are suitable where design margins accommodate higher ratings. MA4P7436-1141T exhibits higher capacitance (1pF) and lower resistance (500mOhm), requiring RF performance verification. Both maintain SOD-323 packaging compatibility.

Not Recommended:

BA592E6327HTSA1 and BA592E6433HTMA1 (Infineon Technologies) are Standard diode types, not PIN diodes, with insufficient voltage rating (35V) for this application. Not For New Designs status indicates obsolescence trajectory.

BAR6503WE6327HTSA1 (Infineon Technologies) has insufficient voltage rating (30V) and higher resistance (900mOhm), unsuitable for 50V applications.

1SV263-TL-E (onsemi) has reduced power dissipation (100 mW) and different packaging (SOT-323), limiting suitability.

Frequently Asked Questions (FAQ)

Q: Can BAP51-03,115 be used as a direct replacement for BAP50-03,115?

A: Yes. BAP51-03,115 meets or exceeds all electrical specifications of BAP50-03,115 while maintaining SOD-323 packaging. The lower resistance (2.5Ohm vs. 5Ohm) provides improved RF performance. Active product status ensures continued availability.

Q: What is the difference between PIN and Standard diode types in this list?

A: PIN diodes are designed for RF and microwave applications with controlled junction capacitance and resistance characteristics. Standard diodes are general-purpose rectifiers. Only PIN-type diodes are suitable for RF Diode PIN applications. BA592E6327HTSA1 and BA592E6433HTMA1 are Standard types and are not functionally equivalent.

Q: Can I use MA4P7436-1141T if my circuit operates at 50V?

A: Yes, provided RF performance parameters are acceptable. MA4P7436-1141T has a 75V rating, providing design margin. However, its capacitance (1pF @ 20V) is higher than BAP50-03,115 (0.35pF @ 5V), which may affect RF circuit tuning. Circuit-level verification is required.

Q: Why is BAP50-03-TP not recommended as a primary substitute?

A: BAP50-03-TP has reduced power dissipation (200 mW vs. 500 mW). If your circuit dissipates more than 200 mW in this component, thermal stress will result. Additionally, Obsolete status limits procurement options. BAP51-03,115 is preferred due to Active status and equivalent power rating.

Q: Are all substitute parts ROHS3 compliant?

A: All listed parts are ROHS3 compliant except where not specified. Compliance status is provided in the detailed parameter list for each part.

Q: What packaging options are available for BAP51-03,115?

A: BAP51-03,115 is available in Cut Tape (CT) and Digi-Reel packaging, both suitable for automated assembly. BAP50-03,115 original packaging is not specified in the provided data.

Q: Can I substitute BAP51-02-TP for BAP50-03,115?

A: No. BAP51-02-TP uses SOD-523 packaging, which is physically incompatible with SOD-323 footprints. Additionally, it has a 60V rating and different capacitance characteristics. Physical and electrical incompatibility makes this unsuitable.

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