BB 565-02V E7902 Equivalent & Substitute Parts

Part Overview

The BB 565-02V E7902 is a varactor diode manufactured by Infineon Technologies, designed for VHF applications requiring voltage-controlled capacitance. This single diode operates at a peak reverse voltage of 30 V with a capacitance of 2.2 pF at 28 V (1 MHz). The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Key Parameters

Parameter	Value
Manufacturer Part Number	BB 565-02V E7902
Manufacturer	Infineon Technologies
Category	Diodes (Varactors)
Package / Case	SC-79, SOD-523
Mounting Type	Surface Mount
Voltage - Peak Reverse (Max)	30 V
Capacitance @ Vr, F	2.2 pF @ 28V, 1MHz
Capacitance Ratio	11 (C1/C28)
Diode Type	Single
Operating Temperature	-55°C ~ 150°C (TJ)
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the BB 565-02V E7902 is determined by the following critical parameters:

Package Compatibility: All substitutes must use SC-79 or SOD-523 surface mount packages
Voltage Rating: Peak reverse voltage must be 30 V or higher
Diode Configuration: Single diode type only
Mounting Type: Surface mount technology
Capacitance Range and Ratio: Substitutes must operate within similar voltage-dependent capacitance characteristics to maintain circuit performance
Temperature Range: Operating temperature must support the application requirements

The substitute parts are grouped into two categories based on their capacitance characteristics at 28 V (1 MHz):

Group 1 - Similar Capacitance at 28V (1MHz): BB174X, SMV1801-079LF These parts maintain capacitance values and ratios closest to the original BB 565-02V E7902, making them direct functional replacements for applications requiring stable capacitance tuning across the specified voltage range.

Group 2 - Alternative Capacitance Profiles: BB181,115, BB181,335, SMV1273-079LF, SMV1405-079LF, SMV1413-079LF These parts offer different capacitance values and ratios, suitable for applications where the specific capacitance tuning curve differs from the original design.

Parameter Comparison

Part Number	Manufacturer	Package	Voltage - Peak Reverse (Max)	Capacitance @ Vr, F	Capacitance Ratio	Operating Temperature	Product Status	RoHS Status
BB 565-02V E7902	Infineon Technologies	SC-79, SOD-523	30 V	2.2 pF @ 28V, 1MHz	11 (C1/C28)	-55°C ~ 150°C	Obsolete	Not specified
BB174X	NXP USA Inc.	SC-79, SOD-523	30 V	2.22 pF @ 28V, 1MHz	10.9 (C1/C28)	-55°C ~ 125°C	Active	ROHS3 Compliant
BB181,115	NXP Semiconductors	SC-79, SOD-523	30 V	1.055 pF @ 28V, 1MHz	16 (C0.5/C28)	-55°C ~ 150°C	Obsolete	ROHS3 Compliant
BB181,335	NXP USA Inc.	SC-79, SOD-523	30 V	1.055 pF @ 28V, 1MHz	16 (C0.5/C28)	-55°C ~ 150°C	Obsolete	ROHS3 Compliant
SMV1273-079LF	Skyworks Solutions Inc.	SC-79, SOD-523	29 V	2.4 pF @ 25V, 1MHz	7 (C2/C25)	-55°C ~ 125°C	Active	ROHS3 Compliant
SMV1405-079LF	Skyworks Solutions Inc.	SC-79, SOD-523	30 V	1.45 pF @ 4V, 50MHz	4.1 (C0/C30)	-55°C ~ 125°C	Active	ROHS3 Compliant
SMV1413-079LF	Skyworks Solutions Inc.	SC-79, SOD-523	30 V	4.42 pF @ 4V, 50MHz	4.2 (C0/C30)	-55°C ~ 125°C	Active	ROHS3 Compliant
SMV1801-079LF	Skyworks Solutions Inc.	SC-79, SOD-523	30 V	2.89 pF @ 28V, 1MHz	22 (C1/C28)	-55°C ~ 125°C	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Functional Replacement (Preferred)

BB174X is the primary substitute for the BB 565-02V E7902. It maintains nearly identical capacitance characteristics (2.22 pF vs. 2.2 pF at 28V, 1MHz) and capacitance ratio (10.9 vs. 11), ensuring minimal circuit redesign. BB174X is manufactured by NXP USA Inc. with active product status and ROHS3 compliance, providing long-term supply availability.

SMV1801-079LF offers an alternative with higher capacitance ratio (22 vs. 11) and slightly elevated capacitance (2.89 pF vs. 2.2 pF at 28V, 1MHz). This part is manufactured by Skyworks Solutions Inc. with active status and ROHS3 compliance, suitable for applications where increased tuning range is beneficial.

For Legacy System Support

BB181,115 and BB181,335 are obsolete parts with identical electrical characteristics (1.055 pF @ 28V, 1MHz; capacitance ratio 16). These are suitable only for maintaining existing designs where the specific capacitance profile is required. Both parts support the full operating temperature range (-55°C ~ 150°C) matching the original BB 565-02V E7902.

For High-Frequency Applications

SMV1405-079LF and SMV1413-079LF are characterized at 50 MHz rather than 1 MHz, making them suitable for VHF and higher-frequency circuits. SMV1405-079LF provides lower capacitance (1.45 pF @ 4V, 50MHz) with higher Q factor (3200), while SMV1413-079LF offers higher capacitance (4.42 pF @ 4V, 50MHz) with moderate Q factor (2400). Both are active products with ROHS3 compliance.

Compliance Considerations

All recommended substitutes meet REACH Unaffected or ROHS3 Compliant standards. The original BB 565-02V E7902 is classified as obsolete; active alternatives (BB174X, SMV1273-079LF, SMV1405-079LF, SMV1413-079LF, SMV1801-079LF) ensure continued supply chain support and regulatory compliance for new production.

Frequently Asked Questions (FAQ)

Q: Can BB174X directly replace BB 565-02V E7902 without circuit modification?

A: BB174X is the closest electrical equivalent with 2.22 pF capacitance at 28V (1MHz) versus 2.2 pF for the original part, and a capacitance ratio of 10.9 versus 11. The SC-79/SOD-523 package is identical. Direct substitution is feasible for most applications; however, circuit validation is required to confirm performance in your specific tuning network.

Q: What is the difference between capacitance measured at 1 MHz versus 50 MHz?

A: Varactor capacitance is frequency-dependent. Parts specified at 1 MHz (BB 565-02V E7902, BB174X, SMV1801-079LF) are suitable for lower-frequency VHF applications. Parts specified at 50 MHz (SMV1405-079LF, SMV1413-079LF) are optimized for higher-frequency circuits. Selection depends on your circuit's operating frequency.

Q: Why do some substitutes have different capacitance ratios?

A: Capacitance ratio (e.g., C1/C28 or C0/C30) describes how capacitance changes across the voltage range. Different ratios indicate different tuning curves. BB 565-02V E7902 has a ratio of 11 (C1/C28), meaning capacitance at 1 V is 11 times higher than at 28 V. SMV1801-079LF has a ratio of 22, providing greater tuning range. Select based on your required tuning bandwidth.

Q: Are all substitutes RoHS compliant?

A: All active substitute parts (BB174X, SMV1273-079LF, SMV1405-079LF, SMV1413-079LF, SMV1801-079LF) are ROHS3 compliant. Obsolete parts (BB181,115, BB181,335) are also ROHS3 compliant. The original BB 565-02V E7902 RoHS status is not specified in available documentation.

Q: What is the temperature range difference between substitutes?

A: The original BB 565-02V E7902 operates from -55°C to 150°C. Most active substitutes (BB174X, SMV1273-079LF, SMV1405-079LF, SMV1413-079LF, SMV1801-079LF) operate from -55°C to 125°C. For applications requiring the full -55°C to 150°C range, BB181,115 and BB181,335 maintain this specification, though both are obsolete.

Q: Can I use SMV1405-079LF or SMV1413-079LF as substitutes?

A: SMV1405-079LF and SMV1413-079LF are suitable only if your circuit operates at 50 MHz and the specific capacitance values (1.45 pF and 4.42 pF respectively at 4V, 50MHz) match your tuning requirements. These parts have significantly different capacitance characteristics compared to BB 565-02V E7902 and are not recommended for direct replacement in 1 MHz circuits.

Q: What inventory availability should I consider?

A: BB174X has 1,367 pieces in stock. SMV1801-079LF has 2,800 pieces. SMV1413-079LF has 2,133 pieces. SMV1405-079LF has 36,103 pieces. SMV1273-079LF has 70,954 pieces. For immediate availability, SMV1273-079LF and SMV1405-079LF offer the largest stock quantities.

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