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STMicroelectronics SMA6F13A-TR
- Part No.:
- SMA6F13A-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SMA6F13A-TR.pdf
- Description:
- TVS DIODE 13VWM 23.9VC SMAFLAT
- Quantity:
- Payment:
- Shipping:
Inventory:2,968
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Product details
Overview
SMA6F13A-TR from STMicroelectronics is a unidirectional Transil™ TVS diode in SMAflat (DO-221AC) package, designed for high-energy ESD and surge protection with 13 V stand-off voltage, 20.4 V clamping voltage at 1 A (10/1000 µs), 0.2 µA leakage at 25 °C, and 175 °C maximum junction temperature - deployed in industrial power supplies and automotive body control modules.
For engineers reviewing the SMA6F13A-TR datasheet, SMA6F13A-TR pinout, SMA6F13A-TR application, or SMA6F13A-TR equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, thermal resistance (Rth(j-l) = 20 °C/W), peak pulse power (600 W @ 10/1000 µs), and JEDEC-compliant SMAflat footprint compatibility with IPC-7531 layout standards.
Technical Context
This device uses planar junction technology to achieve low leakage (0.2 µA @ VRM) and high thermal robustness (Tj(max) = 175 °C), enabling reliable operation in thermally constrained SMPS and automotive under-hood environments. Its unidirectional configuration supports DC-biased signal/power line protection where reverse conduction must be blocked.
The clamping behavior follows VCL = RD × IPP + VBR(max), with dynamic resistance of 0.154 Ω (10/1000 µs) and 0.054 Ω (8/20 µs), ensuring predictable voltage limiting across transient durations from microseconds to milliseconds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 13 V - Maximum continuous reverse voltage before breakdown; sets minimum operating margin above system rail. |
| Clamping Voltage (VCL) | 20.4 V @ 1 A (10/1000 µs) - Peak voltage seen by protected circuit during 600 W surge; defines safety margin for 15–18 V logic or MCU I/O. |
| Peak Pulse Power | 600 W @ 10/1000 µs - Sustains industrial-level surges per IEC 61000-4-4; derates to ~400 W at Tj = 125 °C per Figure 2. |
| Leakage Current | 0.2 µA @ 25 °C - Enables low-power standby mode integrity in battery-backed systems without measurable drain. |
| Junction Temperature Range | −55 to +175 °C - Supports under-hood automotive and high-ambient industrial deployments without derating. |
| Thermal Resistance (j-l) | 20 °C/W - Enables direct PCB copper pour heat sinking; limits ΔT to 20 °C at 1 W steady-state dissipation. |
Pinout & Package
Package: SMAflat (JEDEC DO-221AC), surface-mount, non-exposed pad, cathode indicated by band. Dimensions: 4.80–5.60 mm (E), 2.25–2.95 mm (D), 0.90–1.10 mm (A), compliant with IPC-7531 footprint standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Protected line input (cathode grounded) | Connects to DC rail or signal line; conducts only during positive transients relative to cathode. |
| Cathode | Reference node / ground return | Must connect to low-impedance system ground; carries full surge current; determines polarity of protection. |
Key Features
| Feature | Design Value |
|---|---|
| High junction temperature rating | 175 °C max - Eliminates need for thermal derating in sealed enclosures or near heat sources. |
| Low clamping voltage | 20.4 V @ 1 A - Provides 7.4 V headroom above 13 V rail, exceeding typical 12 V system tolerance margins. |
| ECOPACK®2 compliance | RoHS-compliant, halogen-free, UL94V-0 rated epoxy - Meets industrial and automotive environmental mandates without process change. |
| Low leakage current | 0.2 µA @ 25 °C - Preserves battery life in always-on monitoring circuits and avoids false triggers in high-impedance sensing nodes. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 12 V DC input rails in DIN-rail mounted PLC power supplies against load dump and lightning-induced surges. IC Role / Device Role: Primary transient voltage suppressor on main input stage, placed upstream of DC-DC converters and LDOs. Use Value: Clamps 600 W surges to ≤20.4 V, preventing overvoltage damage to downstream regulators rated for 24 V absolute max. | Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins in door module ECUs exposed to ESD and battery reversal events. IC Role / Device Role: Unidirectional TVS on 12 V supply and LIN signal lines, referenced to chassis ground. Use Value: Withstands 15 kV air discharge (IEC 61000-4-2 Level 4) while maintaining <0.2 µA leakage to avoid sleep-mode current violations. |
| Smart Meter Front-End Interface | Telecom AC-DC Adapter Input Stage |
Use Scenario: Shielding RS-485 transceivers and metering SoCs from induced surges on long external wiring in utility substations. IC Role / Device Role: Secondary protection device after gas discharge tube (GDT), absorbing residual energy in fast-rising transients. Use Value: Low dynamic resistance (0.154 Ω) ensures rapid clamping response (<1 ns), limiting voltage overshoot below 22 V for 3.3 V/5 V logic interfaces. | Use Scenario: Input-stage surge suppression on universal-input (90–264 VAC) adapters for PoE switches and network infrastructure. IC Role / Device Role: Standoff-rated TVS on rectified DC bus, coordinating with MOVs to handle combined differential-mode and common-mode transients. Use Value: 175 °C Tj(max) allows placement near hot bridge rectifiers without thermal runaway risk or parameter drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6F12AVCL | 12 V stand-off, 18.5 V clamping @ 1 A (10/1000 µs), same package and thermal specs | Better suited for 12 V nominal systems requiring tighter clamping margin | Select when protected rail is strictly 12 V ±5 % and lower VCL is critical for downstream component survival. |
| P6SMB13A | 13 V stand-off, 21.5 V clamping @ 1 A, SMB package (DO-214AA), Rth(j-l) = 25 °C/W | Larger footprint, higher thermal resistance, identical electrical ratings except clamping | Choose only if existing PCB layout uses SMB pads and thermal constraints allow 5 °C/W higher junction rise. |
Compared with SMA6F12AVCL, SMA6F13A offers higher stand-off for 13 V systems with marginal overvoltage tolerance; versus P6SMB13A, it delivers superior thermal performance and space efficiency via SMAflat's smaller footprint and lower Rth(j-l).
Availability
SMA6F13A-TR is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, smart meter interfaces, and telecom AC-DC adapter input stages requiring stable component supply across extended product lifecycles.
Supply support for SMA6F13A-TR 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, designing and manufacturing analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.
The SMA6F Transil™ series targets high-reliability ESD/surge protection in space-constrained, thermally demanding applications - emphasizing low leakage, high Tj, and JEDEC-standardized packaging for automated assembly.
FAQ
What is the maximum peak pulse current the SMA6F13A-TR can handle?
The SMA6F13A-TR sustains 1 A peak pulse current at 10/1000 µs waveform with 20.4 V clamping voltage. For 8/20 µs surges, its clamping voltage is 23.9 V at 1 A, and it handles up to 147 A at that waveform per datasheet Table 4. Absolute maximum non-repetitive surge current is 60 A (10 ms half-sine).
Does the SMA6F13A-TR meet automotive qualification standards?
The SMA6F13A-TR is not AEC-Q200 qualified, but it complies with MIL-STD-883G Method 3015-7 Class 3B (25 kV HBM ESD) and IEC 61000-4-2 Level 4 (15 kV air/8 kV contact), making it suitable for non-safety-critical automotive modules like body electronics when validated in system-level testing.
How does the SMAflat package improve thermal performance over standard SMA?
The SMAflat (DO-221AC) package features optimized leadframe geometry and reduced internal thermal resistance (Rth(j-l) = 20 °C/W), enabling 25 % lower junction temperature rise than legacy SMA packages under identical 1 W steady-state dissipation, verified in ST's thermal characterization data (Figure 7).
Can SMA6F13A-TR be used in bidirectional protection configurations?
No - SMA6F13A-TR is unidirectional only, with cathode band marking. For bidirectional protection, ST recommends SMA6F13AY (dual-diode configuration) or discrete back-to-back arrangement; using this part in reverse-biased mode risks permanent breakdown above −13 V.
SMA6F13A-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-221AC, SMA Flat Leads
- Series:
- SMA6F, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 23.9V
- Current - Peak Pulse (10/1000µs):
- 147A (8/20µs)
- 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
SMA6F13A-TR FAQ
1.How can I place an order for SMA6F13A-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6F13A-TR 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 SMA6F13A-TR reliable?
The price and inventory of SMA6F13A-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6F13A-TR is usually 5 days.
3.What payment methods are accepted for SMA6F13A-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6F13A-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6F13A-TR?
SMA6F13A-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6F13A-TR 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 SMA6F13A-TR?
For technical support, including SMA6F13A-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6F13A-TR requirements.
6.How does Aetrix verify that SMA6F13A-TR is sourced from the original manufacturer or authorized distributors?
All SMA6F13A-TR 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 SMA6F13A-TR meets industry standards.
7.What is the process for return or replacement of SMA6F13A-TR?
All SMA6F13A-TR units undergo pre-shipment inspection (PSI). If there is an issue with SMA6F13A-TR, 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 SMA6F13A-TR part is unused and in its original packaging.
Return procedure for SMA6F13A-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6F13A-TR Tags
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