680pF 500V DC Silver Capacitor
Part Number: 5SMA680
680pF • 500V DC • 85°C • Silver Mica Capacitor
Capacitance
680pF
Voltage
500V DC
Tolerance
±±20%
Temp Rating
85°C
Mounting
radial
Dielectric
mica
$1.55 each × 1
About the 680pF 500V DC Silver Capacitor
Silver Mica capacitor. Capacitance: 680pF, Voltage: 500V DC. Part Number: 5SMA680.
Applications for 680pF 500V DC Silver Mica Capacitors
Typical design scenarios where the 5SMA680 (680pF / 500V DC) is specified:
Power Conversion
Snubber circuits, voltage multipliers, and power factor correction stages at 500V DC operating voltage
Industrial Controls
Relay suppression, arc quenching, and EMI filtering in industrial switchgear and control panels
PCB-Mount Circuits
Through-hole and mixed-technology assemblies in prototype, low-volume, and field-repairable designs
Precision & Timing
Oscillator circuits, sample-and-hold, and measurement instruments requiring stable capacitance
Need a Replacement for 5SMA680?
680pF · 500V DC · radial
Our engineers can cross-reference this part to find a compatible replacement that meets or exceeds the original specifications — with full CoC and traceability documentation.
Technical Specifications
Complete specifications for 5SMA680
Why Choose This Silver Mica Capacitor?
- 500V DC voltage rating with recommended 20% derating for maximum service life in power circuits
- 100% electrically tested before shipment for guaranteed in-spec performance
- Ships same-day from US warehouse when ordered before 3 PM EST
Need Technical Assistance?
Our capacitor specialists can help with selection, cross-reference, and application questions.
Why Buy From Specap?
- Family-owned capacitor specialist since 1984
- Experts in hard-to-find & obsolete parts
- Same-day shipping on in-stock items
- 100% electrically tested before shipment
- Volume discounts with no minimum order
- Cross-reference assistance available
Looking for an Equivalent?
We can help cross-reference 5SMA680 with alternative part numbers.
Cross-Reference ToolCapacitor Calculators
Free tools to help with your design
Frequently Asked Questions
Common questions about 5SMA680 and silver mica capacitors
What applications use a 680pF 500V DC silver mica capacitor?
This 680pF 500V DC silver mica capacitor serves filtering, timing, and energy storage functions in circuits operating within its voltage and temperature ratings.
Can the 5SMA680 handle high-temperature environments?
The 5SMA680 is rated for 85°C, which covers standard commercial and light-industrial environments. For installations in enclosed cabinets or hot climates where ambient temperatures exceed 65°C, consider selecting a 105°C-rated alternative for additional thermal margin.
What is the recommended PCB footprint for the 5SMA680?
The 5SMA680 uses radial mounting. Refer to the manufacturer datasheet for the recommended land pattern. For through-hole parts, ensure the drill diameter is 0.2–0.3mm larger than the lead diameter for reliable hand or wave soldering.
What capacitors can replace the 5SMA680?
Cross-referencing the 5SMA680 requires matching capacitance (680pF), voltage (500V DC), temperature rating (85°C), and physical dimensions. ESR and ripple current ratings must also meet or exceed the original spec for reliable operation. Contact our technical team at 800-731-1433 for verified cross-reference options — we maintain compatibility data across major manufacturers.
Should I derate the voltage when using the 5SMA680?
Yes. Industry best practice is to operate capacitors at 60–80% of their rated voltage. For the 5SMA680 rated at 500V DC, this means designing your circuit to keep the applied voltage below 400V under all conditions including transients. Voltage derating significantly extends capacitor life — each 10% reduction in applied voltage can roughly double the expected service life for electrolytic types.
What is the lead time for the 5SMA680?
In-stock items ship same-day when ordered before 3 PM EST, with standard delivery of 2–5 business days within the continental US. If the 5SMA680 shows as out of stock, our sourcing team can typically locate high-voltage silver mica capacitors within 1–2 weeks through our manufacturer and distributor network. Contact us for expedited options or large-quantity pricing.
Can't Find the Capacitor You Need?
We specialize in hard-to-find, obsolete, and specialty capacitors. Our experts can help locate any part.