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onsemi SA8V0A
- Part No.:
- SA8V0A
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA8V0A.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:4,024
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Product details
Overview
SA8V0A from Fairchild Semiconductor is a unidirectional 500 W transient voltage suppressor (TVS) diode in DO-15 package, designed for primary overvoltage protection of DC power lines and signal interfaces. It features a 8.0 V reverse stand-off voltage (VRWM), 8.89–9.83 V breakdown voltage (VBR) at 1.0 mA, 13.6 V clamping voltage (VC) at 36.7 A peak pulse current (IPPM), and operates up to +175 °C junction temperature.
For engineers reviewing the SA8V0A datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DO-15 terminal mapping, bidirectional variant context (SA8V0CA), clamping performance under 10/1000 μs surge, and real-world selection guidance for industrial power supply, automotive body electronics, and telecom interface protection.
Technical Context
The SA8V0A uses a glass-passivated silicon junction to achieve low incremental surge resistance and fast response time - typically less than 1.0 ps from 0 V to breakdown for unidirectional operation. Its 500 W peak pulse power rating is defined on the standardized 10/1000 μs waveform per R.E.A., with thermal derating above 75 °C ambient.
It exhibits <1.0 μA reverse leakage at VRWM = 8.0 V (tested at 25 °C), and supports non-repetitive forward surge currents up to 70 A (8.3 ms half-sine, JEDEC method). The device is rated for storage from –65 °C to +175 °C and continuous power dissipation of 1.0 W at 75 °C with 0.375" lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 500 W - sustains single high-energy transients without failure in telecom or automotive load-dump events |
| Reverse Stand-off Voltage (VRWM) | 8.0 V - maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 8.89–9.83 V @ 1.0 mA - ensures reliable triggering just above normal operating rail |
| Clamping Voltage (VC) | 13.6 V @ 36.7 A - limits downstream voltage stress during surge, protecting 12 V logic or analog circuitry |
| Reverse Leakage (IR) | <1.0 μA @ 8.0 V - negligible standby power loss and minimal interference in high-impedance sensing paths |
| Junction Temperature Range | –65 °C to +175 °C - enables deployment in under-hood automotive or industrial motor control environments |
| Package | DO-15 - industry-standard axial-leaded package with cathode band marking, compatible with through-hole assembly |
Pinout & Package
SA8V0A is housed in a DO-15 axial-leaded package. The cathode is marked by a color band on the body; the anode is the unmarked end. Leads are tinned and suitable for wave or hand soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point during forward conduction; connected to ground or low-side reference | Provides return path during clamping; must be routed with low-inductance connection to minimize overshoot |
| Cathode (banded end) | Protected line connection; voltage sensing node during transient suppression | Connected to the line being protected (e.g., 12 V rail); clamps to anode when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability and moisture resistance in humid or thermally cycled environments |
| Fast response time <1.0 ps | Activates before sensitive downstream ICs experience overvoltage damage during ESD or lightning-induced surges |
| Low incremental surge resistance | Minimizes voltage overshoot during high di/dt events, improving clamping precision across varying surge magnitudes |
| 500 W peak pulse rating (10/1000 μs) | Meets IEC 61000-4-5 Level 4 (4 kV line-to-line) requirements for industrial equipment without external series impedance |
| DO-15 mechanical compatibility | Enables drop-in replacement of legacy TVS diodes (e.g., P6KE8.2A) without PCB redesign |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting 12 V switched inputs against load dump and jump-start transients in BCMs. IC Role / Device Role / Timing Role: Primary clamping element placed directly at connector entry point before input conditioning circuitry. Use Value: Clamps 13.6 V at 36.7 A, limiting stress on optocoupler or MCU GPIO while surviving repeated 500 W pulses per ISO 7637-2. |
Use Scenario: Safeguarding 24 V digital input channels from field-wiring induced surges in factory automation systems. IC Role / Device Role / Timing Role: Unidirectional TVS mounted across input terminals to shunt energy before series resistor and Schmitt trigger. Use Value: Sub-μA leakage preserves high-impedance detection threshold; 175 °C rating supports operation near motor drives or power supplies. |
| Telecom Power Feeding Interface | Consumer Appliance DC Power Rail |
Use Scenario: Overvoltage protection on -48 V DC feeding lines in remote radio head power supplies. IC Role / Device Role / Timing Role: Reverse-polarity configured TVS (cathode to feed line) to clamp positive-going transients on negative rails. Use Value: Validated 8.0 V VRWM and 13.6 V VC ensure compatibility with -48 V nominal systems while maintaining margin below -40 V shutdown thresholds. |
Use Scenario: Secondary-level surge suppression on internal 12 V DC distribution bus in smart HVAC controllers. IC Role / Device Role / Timing Role: Localized clamping device placed near microcontroller power pins and sensor interfaces. Use Value: DO-15 footprint allows placement adjacent to sensitive loads; 1.0 μA IR prevents battery drain in always-on standby modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0A | Same VRWM (8.0 V), lower PPPM (400 W), SMA package (surface-mount) | Requires PCB rework for SMT layout; better suited for space-constrained consumer boards | Select SMAJ8.0A only if board area is constrained and 400 W surge margin suffices |
| P6KE8.2A | Higher VRWM (8.2 V), same DO-15 package, 600 W PPPM but slower response (~1 ns) | Marginally higher clamping (13.9 V) and less precise turn-on; legacy design compatibility | Choose P6KE8.2A only for backward-compatible replacements where 0.2 V VRWM increase is acceptable |
Compared with SMAJ8.0A and P6KE8.2A, SA8V0A provides optimal balance of 500 W surge capacity, sub-nanosecond response, and through-hole manufacturability - making it preferred for new industrial and automotive designs requiring robust, easily assembled protection.
Availability
SA8V0A is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC inputs, and telecom power feeding interfaces requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for SA8V0A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Fairchild Semiconductor was a U.S.-based semiconductor company specializing in power management, analog, and discrete components before its acquisition by ON Semiconductor in 2016. Its TVS portfolio emphasized ruggedness and standardization.
The SA8V0A belongs to Fairchild's SAxxxA family of 500 W unidirectional TVS diodes, engineered for cost-effective, high-reliability overvoltage protection in harsh-environment DC power and signal lines.
FAQ
What is the clamping voltage of SA8V0A at its rated peak pulse current?
The SA8V0A has a maximum clamping voltage (VC) of 13.6 V when subjected to its rated peak pulse current (IPPM) of 36.7 A on the 10/1000 μs waveform. This value is measured per R.E.A. standards and ensures predictable voltage limiting during surge events, directly protecting downstream 12 V-rated ICs and sensors without exceeding their absolute maximum ratings.
Is SA8V0A suitable for bidirectional transient protection?
No - SA8V0A is a unidirectional TVS diode intended for DC line protection with defined polarity. For bidirectional applications (e.g., AC signal lines or data buses), the SA8V0CA variant must be used. SA8V0CA shares identical VRWM, VBR, and VC specs but conducts in both directions, with no cathode band marking on the DO-15 package.
What is the maximum allowable ambient temperature for continuous operation of SA8V0A?
SA8V0A is rated for continuous power dissipation of 1.0 W at 75 °C ambient with 0.375" lead length. Above that, derating applies per Figure 5 in the datasheet: at 100 °C ambient, max power drops to ~0.65 W. Its junction can operate up to +175 °C, but system-level thermal design must ensure TJ stays within limit under worst-case surge + steady-state conditions.
Does SA8V0A meet any international surge immunity standards?
Yes - SA8V0A's 500 W peak pulse rating on the 10/1000 μs waveform aligns with IEC 61000-4-5 Level 4 (4 kV line-to-line) test requirements when used with appropriate series impedance. Its fast response and low clamping support compliance in industrial equipment, automotive ECUs, and telecom infrastructure meeting ISO 7637-2 and EN 61000-4-4 specifications.
How does the glass passivation in SA8V0A improve long-term reliability?
Glass passivation on the SA8V0A's silicon junction provides superior environmental protection versus epoxy or polymer coatings - resisting moisture ingress, ionic contamination, and thermal cycling degradation. This extends operational life in humid, dusty, or temperature-varying environments such as automotive engine compartments or outdoor industrial enclosures, maintaining consistent VBR and IR over 10+ years.
SA8V0A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 36.7A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
SA8V0A FAQ
1.How can I place an order for SA8V0A through Aetrix?
Please submit a Request for Quotation (RFQ) for SA8V0A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SA8V0A reliable?
The price and inventory of SA8V0A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA8V0A is usually 5 days.
3.What payment methods are accepted for SA8V0A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA8V0A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA8V0A?
SA8V0A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA8V0A order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SA8V0A?
For technical support, including SA8V0A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA8V0A requirements.
6.How does Aetrix verify that SA8V0A is sourced from the original manufacturer or authorized distributors?
All SA8V0A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SA8V0A meets industry standards.
7.What is the process for return or replacement of SA8V0A?
All SA8V0A units undergo pre-shipment inspection (PSI). If there is an issue with SA8V0A, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SA8V0A part is unused and in its original packaging.
Return procedure for SA8V0A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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