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Your online payment will be processed by PayPal checkout services. You can pay using a PayPal account or credit card. A PayPal account is not required to checkout. The transaction will be listed as "PayPal - Penzar Devl" on your credit card statement.

If applicable, please enter your company name and any other additional order information in the checkout message box (or email us after placing the order).

You also have the option to request an online invoice. You can pay the invoice using Square payment checkout with a credit card or ACH transfer.

For US customers only, we also accept telephone credit card orders.



Products for Windows 7/8/10/11 64-bit

TopSpice 10
Analog/digital mixed-mode circuit simulator 64-bit electronic software distribution (ESD) download product.

This is a complete 64-bit system with integrated schematic capture, mixed-mode circuit simulator, graphical post-processor, and library of over 35,000 analog and digital parts. Single-user single-computer license. Requires Windows 64-bit and PC with Intel Core or compatible CPU. See complete system requirements. Download file size 140MB.
ESD product sale terms and conditions

Part no. TX710ES
Shipping weight: 0 (download instructions will be emailed)




US$595.00

TopSpice 10 2-User
Analog/digital mixed-mode circuit simulator 64-bit electronic software distribution (ESD) download product. 2 user/2 computer license. Requires Windows 64-bit and PC with Intel Core or compatible CPU. See complete system requirements. Download file size 140MB.
ESD product sale terms and conditions

Part no. TX710E2
Shipping weight: 0 (download instructions will be emailed)




US$995.00

TopSpice 10 3-User
Analog/digital mixed-mode circuit simulator 64-bit electronic software distribution (ESD) download product. 3 user/3 computer license. Requires Windows 64-bit and PC with Intel Core or compatible CPU. See complete system requirements. Download file size 140MB.
ESD product sale terms and conditions

Part no. TX710E3
Shipping weight: 0 (download instructions will be emailed)




US$1,395.00


We ship the latest versions only. Part number on invoice may differ. Prices do not include delivery charges, taxes or customs duties. Manufacturer direct prices. Reseller prices may vary. Most online orders are processed within one working business day (Monday thru Friday 8 AM to 5 PM Pacific time, excludes weekends and US holidays).


Update/Upgrade Products

Ordering Information and Terms


For questions regarding your order, please email us at:

Penzar Development Home



Penzar Development, PO Box 902791, Palmdale, CA 93590, USA