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onsemi SA5V0A
- Part No.:
- SA5V0A
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA5V0A.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:6,887
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Product details
Overview
SA5V0A from Fairchild Semiconductor is a unidirectional 500 W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power lines and signal interfaces. It features a 5.0 V reverse stand-off voltage (VRWM), 6.4–7.0 V breakdown voltage (VBR) at 10 mA, 9.2 V clamping voltage (VC) at 54.3 A peak pulse current, and operates up to +175 °C junction temperature - deployed in automotive body control modules and industrial PLC I/O protection circuits.
For engineers reviewing the SA5V0A datasheet, pinout, applications, or equivalent options, key selection criteria include clamping performance under 10/1000 μs surge, low leakage (<600 μA at VRWM), DO-15 package compatibility, and unidirectional polarity for DC-biased rail protection.
Technical Context
The SA5V0A employs a glass-passivated silicon junction optimized for fast transient response: sub-1 ps rise time from 0 V to breakdown in unidirectional mode enables effective suppression of ESD and lightning-induced surges before downstream ICs are stressed. Its low incremental surge resistance ensures stable clamping during high-current transients.
Rated for 500 W peak pulse power on the standardized 10/1000 μs waveform and 70 A non-repetitive forward surge current (8.3 ms half-sine), the device meets IEC 61000-4-2 Level 4 and IEC 61000-4-5 (2nd edition) surge immunity requirements when properly mounted with short trace lengths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 500 W - sustains single high-energy surges without failure in telecom or automotive load-dump scenarios |
| Reverse Stand-off Voltage (VRWM) | 5.0 V - defines maximum continuous DC operating voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 6.4–7.0 V @ 10 mA - onset of avalanche conduction; tight tolerance supports predictable trigger margin |
| Clamping Voltage (VC) | 9.2 V @ 54.3 A - maximum voltage seen by protected circuit during full-rated surge event |
| Peak Pulse Current (IPPM) | 54.3 A - peak current capability on 10/1000 μs waveform, directly tied to 500 W rating |
| Reverse Leakage (IR) | <600 μA @ 5.0 V - minimal standby power loss and signal integrity impact in always-on systems |
| Junction Temperature Range | −65 to +175 °C - supports under-hood automotive and industrial environments without derating |
Pinout & Package
SA5V0A is housed in a DO-15 axial leaded package with cathode indicated by a color band. The device has two terminals: anode and cathode. No internal circuitry or multi-pin configuration - standard two-terminal TVS diode operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to system ground or lower-potential rail | Completes conduction path during reverse-transient clamping; must be routed with low-inductance connection to earth/reference |
| Cathode | Marked terminal (color band); connected to protected line or higher-potential rail | Defines polarity - only conducts when protected line exceeds VRWM relative to anode; incorrect orientation disables protection |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable long-term reliability and moisture resistance without hermetic sealing - suitable for reflow and wave soldering |
| Fast response time | <1.0 ps from 0 V to BV - initiates clamping before most microsecond-scale transients fully develop |
| Low incremental surge resistance | Minimizes VC overshoot under high di/dt conditions - critical for protecting sensitive 3.3 V or 5 V logic rails |
| 500 W peak pulse rating | Meets IEC 61000-4-5 surge test levels up to 4 kV (line-earth) with appropriate PCB layout |
| DO-15 mechanical compatibility | Supports automated insertion and legacy board designs using industry-standard footprint and lead spacing |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects 5 V sensor supply lines in BCM against load dump and ISO 7637-2 pulses. IC Role / Device Role: Primary overvoltage clamp placed between fused 5 V rail and microcontroller GPIO or ADC input. Use Value: Limits transient voltage to ≤9.2 V during 54.3 A surges, preventing latch-up or permanent damage to 5 V tolerant interface ICs. |
Use Scenario: Shields 24 V digital input channels from field-wiring induced surges and inductive kickback. IC Role / Device Role: Front-end TVS in series with optocoupler input, referenced to common ground. Use Value: Clamps 24 V line transients to safe levels before reaching isolation barrier, preserving optocoupler CTR and lifetime. |
| USB Host Port ESD Protection | DC Power Supply Ingress Protection |
Use Scenario: Added to VBUS line of USB 2.0 host ports to meet IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role: Unidirectional shunt device between VBUS and GND, upstream of USB switch or controller. Use Value: Sub-1 ps response ensures clamping occurs before ESD pulse couples into data lines or damages USB PHY. |
Use Scenario: Mounted at DC input connector of embedded power supplies to absorb conducted surges from AC/DC adapter or battery leads. IC Role / Device Role: First-line transient suppressor before input capacitor and regulator stage. Use Value: Absorbs up to 500 W energy without degradation, maintaining output regulation during 10/1000 μs line disturbances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0A | DO-214AA package; 600 W rating; slightly higher VC (9.6 V @ 64.5 A); tighter VBR tolerance (6.4–6.8 V) | Surface-mount alternative requiring PCB redesign; better suited for high-density layouts | Select SMBJ5.0A when space-constrained SMT assembly is required and thermal pad design supports 600 W dissipation |
| P6KE5.0A | DO-15 package; 600 W rating; higher IR (1000 μA max @ 5 V); slower response (~1 ns) | Legacy through-hole option with broader availability but reduced ESD robustness | Choose P6KE5.0A only if existing DO-15 footprint must be retained and 1 ns delay is acceptable for target threat profile |
Compared with SMBJ5.0A and P6KE5.0A, SA5V0A offers optimal balance of DO-15 compatibility, 500 W capability, and sub-1 ps response - making it preferred for new through-hole designs where fast clamping and proven automotive qualification matter more than marginal power rating gain.
Availability
SA5V0A is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and DC power supply protection requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for SA5V0A 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 (now part of ON Semiconductor) is a global leader in power management and protection semiconductors, known for high-reliability discrete devices and analog ICs serving automotive, industrial, and computing markets.
The SA5V0A belongs to Fairchild's SAxxxA series of unidirectional TVS diodes - engineered specifically for cost-sensitive, high-volume DC rail protection with guaranteed surge performance and AEC-Q200 alignment for automotive use cases.
FAQ
What is the maximum clamping voltage of SA5V0A under full-rated surge conditions?
The SA5V0A exhibits a maximum clamping voltage (VC) of 9.2 V when subjected to its rated peak pulse current of 54.3 A on the 10/1000 μs waveform. This value is measured per JEDEC standards and represents the highest voltage imposed on the protected circuit during worst-case transient events - critical for ensuring compatibility with 5 V logic families and microcontrollers.
Is SA5V0A suitable for bidirectional signal line protection?
No, SA5V0A is a unidirectional TVS diode intended only for DC-biased applications such as power rail protection. For bidirectional signal lines like RS-485 or CAN, the CA-suffixed variant SA5V0CA must be used - it provides symmetrical clamping in both polarities and lacks the cathode band marking found on SA5V0A.
Does SA5V0A meet automotive qualification standards?
While SA5V0A itself is not individually AEC-Q200 certified, it belongs to Fairchild's SAxxxA family widely adopted in automotive applications including body control modules and infotainment power supplies. Its −65 °C to +175 °C operating range, glass-passivated junction, and robust surge performance align with AEC-Q200 stress test profiles for transient suppression devices.
What is the thermal derating behavior of SA5V0A above 75°C ambient?
SA5V0A's steady-state power dissipation derates linearly from 1.0 W at 75 °C ambient to zero at 175 °C junction temperature. At 100 °C ambient, allowable continuous power drops to approximately 0.67 W. This derating curve is defined in Figure 5 of the datasheet and must be applied when calculating long-term reliability in enclosed or high-temperature enclosures.
Can SA5V0A replace P6KE5.0A in an existing design without layout changes?
Yes - SA5V0A shares the same DO-15 package, pin-to-pin compatible lead form, and identical cathode band marking as P6KE5.0A. However, due to its lower clamping voltage (9.2 V vs. 9.6 V) and faster response, SA5V0A delivers improved protection margin in ESD-critical applications while maintaining full mechanical and electrical drop-in compatibility.
SA5V0A 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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 54.3A
- 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
SA5V0A FAQ
1.How can I place an order for SA5V0A through Aetrix?
Please submit a Request for Quotation (RFQ) for SA5V0A 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 SA5V0A reliable?
The price and inventory of SA5V0A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA5V0A is usually 5 days.
3.What payment methods are accepted for SA5V0A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA5V0A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA5V0A?
SA5V0A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA5V0A 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 SA5V0A?
For technical support, including SA5V0A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA5V0A requirements.
6.How does Aetrix verify that SA5V0A is sourced from the original manufacturer or authorized distributors?
All SA5V0A 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 SA5V0A meets industry standards.
7.What is the process for return or replacement of SA5V0A?
All SA5V0A units undergo pre-shipment inspection (PSI). If there is an issue with SA5V0A, 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 SA5V0A part is unused and in its original packaging.
Return procedure for SA5V0A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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