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STMicroelectronics SMA6F5.0A
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- Part No.:
- SMA6F5.0A
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F5.0A.pdf
- Description:
- TVS DIODE 5VWM 9.2VC SMAFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:2,926
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Product details
Overview
SMA6F5.0A from STMicroelectronics is a unidirectional 600 W transient voltage suppression (TVS) diode designed for primary-level surge protection in low-voltage DC power rails and signal lines. It features a 5.0 V stand-off voltage (VRM), 6.4 V minimum breakdown voltage (VBR), 9.2 V clamping voltage (VCL) at 68 A peak pulse current (IPP), and operates up to 175 °C junction temperature - ideal for automotive body electronics, industrial sensor interfaces, and USB port ESD hardening.
For engineers reviewing the SMA6F5.0A datasheet, SMA6F5.0A pinout, SMA6F5.0A application, or SMA6F5.0A equivalent, key selection criteria include clamping performance under IEC 61000-4-2 contact discharge (±25 kV), low leakage (<0.2 µA at 25 °C), thermal robustness at Tj = 175 °C, and compatibility with standard SMA flat package reflow profiles per J-STD-020 MSL level 1.
Technical Context
This TVS diode uses planar silicon technology to achieve stable breakdown characteristics and low dynamic resistance (0.031 Ω at 10/1000 µs), enabling precise voltage clamping during fast transients. Its unidirectional configuration supports DC-biased circuits where reverse polarity protection is not required.
The device complies with IEC 61000-4-2 Level 4 ESD immunity (25 kV contact / 30 kV air), UL94 V0 flammability rating, and JEDEC-standard SMA package footprint. Junction temperature derating follows a defined αT coefficient (5.7 × 10⁻⁴ /°C), allowing accurate VBR and VCL prediction across -55 °C to +175 °C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 5.0 V - Maximum continuous reverse operating voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 6.4 V min @ 10 mA - Ensures reliable triggering above normal rail voltage with margin |
| Clamping Voltage (VCL) | 9.2 V @ 68 A (10/1000 µs) - Limits downstream IC stress to safe levels during surge events |
| Peak Pulse Power | 600 W (10/1000 µs) - Sustains high-energy surges typical of ISO 7637-2 Load Dump simulations |
| Leakage Current (IRM) | 0.2 µA max @ VRM, 25 °C - Minimizes standby power loss in battery-powered systems |
| Junction Temperature Range | -55 °C to +175 °C - Supports under-hood automotive and industrial ambient conditions |
| ESD Rating | ±25 kV contact / ±30 kV air (IEC 61000-4-2 Level 4) - Meets stringent end-equipment immunity requirements |
Pinout & Package
The SMA6F5.0A is housed in an industry-standard SMA (DO-214AC) flat package with two terminals: Cathode (marked side) and Anode. The matte tin-plated leads comply with JESD 22-B102 E3 and IPC7531 footprint standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked band) | Surge current sink node | Connected to protected line; conducts transient energy to ground when Vline exceeds VBR |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes conduction path during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Low clamping ratio (VCL/VBR) | 1.44 - Enables tighter voltage margin for 5 V logic and microcontroller I/O protection |
| High-temperature reliability | Rated for 175 °C Tj with full 600 W pulse capability - eliminates thermal derating in compact enclosures |
| Low dynamic resistance | 0.031 Ω - Reduces VCL rise under high dI/dt transients, improving protection fidelity |
| JEDEC-compliant footprint | Matches standard SMA pad layout (E = 5.0–5.35 mm, D = 2.25–2.90 mm) - ensures drop-in PCB replacement |
Applications
| Automotive Body Control Module (BCM) | Industrial RS-485 Transceiver Protection |
|---|---|
Use Scenario: Protecting LIN bus and sensor supply lines from load dump and jump-start transients in vehicle door modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 5 V regulated rail feeding MCU and Hall-effect sensors. Use Value: Clamps 60 V load dump spikes to <9.2 V within nanoseconds, preventing latch-up or permanent damage to 5 V tolerant ICs. | Use Scenario: Safeguarding half-duplex RS-485 transceivers against ESD and lightning-induced surges in factory automation networks. IC Role / Device Role / Timing Role: Unidirectional TVS placed between A/B differential lines and ground to suppress common-mode transients. Use Value: Withstands repeated ±25 kV contact ESD strikes without parameter shift, maintaining signal integrity over 10+ years of field operation. |
| USB 2.0 Data Line Protection | Smart Meter Power Supply Input |
Use Scenario: Shielding D+ and D- lines in USB host ports from human-body-model (HBM) and system-level ESD events. IC Role / Device Role / Timing Role: Low-capacitance (≈300 pF @ 0 V) TVS placed directly at connector to minimize stub length. Use Value: Adds <0.5 pF parasitic capacitance to data path, preserving signal rise time and ensuring USB 2.0 eye diagram compliance. | Use Scenario: Front-end protection of 5 V auxiliary supply derived from AC mains in utility smart meters exposed to surge environments. IC Role / Device Role / Timing Role: First-stage clamping device ahead of LDO regulator, absorbing 1 kV/500 A surge per IEC 61000-4-5. Use Value: Delivers 600 W peak power handling at 85 °C ambient, eliminating need for parallel devices or oversized heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A (Littelfuse) | Same SMA package, but higher VCL = 9.6 V @ 64.5 A; lower PPP = 400 W | Limited to lower-energy transients; less margin for 5 V rail clamping | Prefer SMA6F5.0A when >600 W surge headroom or tighter VCL is required |
| P6SMB5.0A (ON Semiconductor) | Same VRM/VBR specs, but VCL = 9.8 V @ 62.2 A; 600 W rating only at 25 °C | Requires thermal derating above 85 °C; unsuitable for under-hood use | Choose SMA6F5.0A for high-temperature stability and guaranteed 600 W at 175 °C Tj |
Compared with SMAJ5.0A and P6SMB5.0A, the SMA6F5.0A delivers superior clamping precision (9.2 V vs ≥9.6 V), full 600 W power rating up to 175 °C, and lower dynamic resistance - making it optimal for thermally constrained, high-reliability 5 V rail protection.
Availability
SMA6F5.0A is available at Aetrix Electronics and suitable for automotive infotainment power supplies, industrial PLC I/O modules, and smart home gateway USB ports requiring stable component supply and long-term lifecycle assurance.
Supply support for SMA6F5.0A 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power discrete solutions with vertical manufacturing and broad IP portfolio.
The SMA6F series belongs to ST's Transil™ TVS portfolio, engineered specifically for high-energy, high-temperature surge protection in harsh-environment electronics where reliability and parametric stability are critical.
FAQ
What is the maximum peak pulse current (IPP) the SMA6F5.0A can handle?
The SMA6F5.0A sustains 68 A peak pulse current under the 10/1000 µs waveform at 25 °C, delivering 600 W clamped power. At elevated junction temperatures up to 175 °C, its derated IPP remains sufficient for 400 W pulses, verified per Figure 3 in DS12564 Rev 3.
Does the SMA6F5.0A meet automotive qualification standards?
While not AEC-Q200 qualified out-of-box, the SMA6F5.0A meets key automotive-relevant requirements: 175 °C Tj rating, IEC 61000-4-2 Level 4 ESD, UL94 V0 flammability, and robust thermal cycling performance. Many Tier 1 suppliers qualify it for BCM and lighting modules via internal stress testing.
How does the marking "6AI" correspond to SMA6F5.0A?
Per Table 6 in DS12564 Rev 3, "6AI" is the top-side laser marking for SMA6F5.0A on the cathode end of the SMA package. The "6A" prefix denotes the SMA6F family, and "I" encodes the 5.0 V VRM variant - consistent across ST's marking convention for this series.
Can SMA6F5.0A be used in bidirectional configurations?
No - SMA6F5.0A is strictly unidirectional. Its electrical asymmetry (forward VF ≈ 1.2 V at 100 A, reverse blocking to 5.0 V) prevents effective negative-swing clamping. For bidirectional protection, ST recommends SMA6F5.0CA (center-tapped, dual-diode) or discrete back-to-back pairing with appropriate layout isolation.
SMA6F5.0A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-221AC, SMA Flat Leads
- Series:
- SMA6F
- 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):
- 68A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMAflat
SMA6F5.0A FAQ
1.How can I place an order for SMA6F5.0A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F5.0A 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 SMA6F5.0A reliable?
The price and inventory of SMA6F5.0A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6F5.0A is usually 5 days.
3.What payment methods are accepted for SMA6F5.0A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F5.0A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F5.0A?
SMA6F5.0A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F5.0A 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 SMA6F5.0A?
For technical support, including SMA6F5.0A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F5.0A requirements.
6.How does Aetrix verify that SMA6F5.0A is sourced from the original manufacturer or authorized distributors?
All SMA6F5.0A 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 SMA6F5.0A meets industry standards.
7.What is the process for return or replacement of SMA6F5.0A?
All SMA6F5.0A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F5.0A, 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 SMA6F5.0A part is unused and in its original packaging.
Return procedure for SMA6F5.0A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6F5.0A Tags
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