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includes Two (2) marked "F4" and "IN," likely a fast recovery diode. Here are the specifications for a typical fast recovery diode like the SJPL-F4:

Reverse Voltage (VRM): 400 V
Average Forward Current (IF(AV)): 1.5 A
Forward Voltage Drop (VF): 1.3 V
Reverse Recovery Time (trr): 50 ns
Surge Forward Current (IFSM): 25 A
Junction Temperature (TJ): -40 to 150 °C
Storage Temperature (TSTG): -40 to 150 °C
Thermal Resistance (Rth(J-L)): 20 °C/W

These diodes are used in various applications, including white goods, audiovisual equipment, lighting equipment, industrial electronic equipment, and as secondary-side rectifier diodes in converter

Also a few things about this eBay seller that may interest you nu

Payment Information:

Payment is expected within 7 days unless prior arrangements are made.

Customer Satisfaction:

We unconditionally guarantee your complete satisfaction with these collector cars or any other items you purchase from us on eBay. With our 100% positive feedback, over 10,000 individual sales in the last 25 years, and a 4.95 out of 5.00 seller rating with a return rate of just 1.6%, we are one of eBay’s most reputable sellers. We consistently deliver outstanding customer service to both local and international customers.

Secure Packaging: Your purchase will be properly packed and shipped immediately. You will receive a tracking number and shipping details via “My eBay” as a clickable link to keep you informed. Our vintage fishing reels, vacuum tubes, scale model cars, and electronics are tightly packed with proper materials and shipped in a strong, appropriately sized shipping box.

Guaranteed Satisfaction: We offer a fully guaranteed, no-questions-asked 60-day return policy with free return shipping.

Combined Shipping: Only one small shipping charge (typically $4.00-$8.00 for U.S. customers) no matter how many fishing reels or other items you purchase.

Thank You for Considering Our Listing:

We appreciate your business! Additionally, we donate a portion of our eBay sales to Shriners Hospital for Crippled Children regularly and to special needs causes, such as recent hurricanes in Florida.

Our Policy on Political Endorsements:

We do not endorse, promote, donate to, or involve ourselves in any political parties or issues, whether Democrat or Republican. Period. We respectfully ask for your business.

Thank you,

Sincerely,

Kenneth A.

eBay Seller

Bushda

Also a few things about this eBay seller that may interest you
Payment Information:
Payment is expected within 7 days unless prior arrangements are made.
Customer Satisfaction:
We unconditionally guarantee your complete satisfaction with these collector cars or any other items you purchase from us on eBay. With our 100% positive feedback, over 10,000 individual sales in the last 25 years, and a 4.95 out of 5.00 seller rating with a return rate of just 1.6%, we are one of eBay?s most reputable sellers. We consistently deliver outstanding customer service to both local and international customers.
Secure Packaging: Your purchase will be properly packed and shipped immediately. You will receive a tracking number and shipping details via ?My eBay? as a clickable link to keep you informed. Our vintage fishing reels, vacuum tubes, scale model cars, and electronics are tightly packed with proper materials and shipped in a strong, appropriately sized shipping box.
Guaranteed Satisfaction: We offer a fully guaranteed, no-questions-asked 60-day return policy with free return shipping.
Combined Shipping: Only one small shipping charge (typically $4.00-$8.00 for U.S. customers) no matter how many fishing reels or other items you purchase.
Thank You for Considering Our Listing:
We appreciate your business! Additionally, we donate a portion of our eBay sales to Shriners Hospital for Crippled Children regularly and to special needs causes, such as recent hurricanes in Florida.
Our Policy on Political Endorsements:
We do not endorse, promote, donate to, or involve ourselves in any political parties or issues, whether Democrat or Republican. Period. We respectfully ask for your business.

Sincerely Kenneth J. Angst

eBay seller BUSHDA