My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMF17A-E3-08
- Part No.:
- SMF17A-E3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF17A-E3-08.pdf
- Description:
- TVS DIODE 17VWM 27.6VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:32,805
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMF17A-E3-08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for transient voltage suppression in high-speed data lines. It features a 17 V stand-off voltage (VRWM), 27.6 V maximum clamping voltage at 7.2 A peak pulse current, and ±30 kV IEC 61000-4-2 ESD immunity. It is AEC-Q101 qualified and used in automotive infotainment interfaces.
For engineers reviewing the SMF17A-E3-08 datasheet, SMF17A-E3-08 pinout, SMF17A-E3-08 application, or SMF17A-E3-08 equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, and real-world ESD protection use cases - all critical for board-level EMI/ESD hardening and automotive-grade reliability validation.
Technical Context
The SMF17A-E3-08 operates as a single-channel unidirectional TVS diode with avalanche breakdown triggered above its reverse standoff voltage of 17 V. Its low incremental surge resistance enables fast clamping response (<1 ns), and its 112 pF typical capacitance at 0 V supports USB 2.0 and CAN FD signal integrity.
It complies with IEC 61000-4-2 (±30 kV contact/air), IEC 61000-4-5 (1000 W, 8/20 μs), and AEC-Q101 stress tests including HBM >8 kV. Thermal resistance is 180 K/W on standard epoxy-glass PCBs with 3 mm × 3 mm Cu pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 17 V - defines maximum continuous operating voltage before clamping begins; ensures no leakage during normal 12 V automotive bus operation. |
| Clamping Voltage (VC) | 27.6 V max at 7.2 A - limits downstream IC voltage exposure during 10/1000 μs transients; protects 3.3 V/5 V logic rails behind series impedance. |
| Peak Pulse Power (PPP) | 200 W (10/1000 μs) - sustains short-duration surges without degradation; sufficient for ISO 7637-2 pulse 1/2a in 12 V systems. |
| Capacitance (CD) | 324 pF typ. at 0 V, 1 MHz - low enough for CAN FD (≤500 pF limit) but not suitable for USB 3.0 or HDMI. |
| ESD Rating | ±30 kV contact & air per IEC 61000-4-2 - exceeds industrial and automotive ESD immunity requirements for exposed connectors. |
| Operating Temp Range | −65 °C to +175 °C - supports under-hood automotive placement and extended industrial temperature deployments. |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test conditions including temperature cycling, HTGB, and H3B human body model. |
Pinout & Package
The SMF17A-E3-08 is housed in the DO-219AB (SMF) package: low-profile (1.08 mm height), SOD-123W-compatible outline, molded UL 94 V-0 compound, MSL level 1, and reflow-solderable with peak temperature ≤260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected signal line (e.g., CAN_H); conducts during positive transients when cathode is biased higher. |
| Cathode | GND reference | Connected to system ground or low-impedance return path; provides clamping path for negative transients and ESD events. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise fast-response technology | Sub-nanosecond response time ensures clamping activation before sensitive ICs experience overvoltage stress. |
| 200 W peak pulse power (10/1000 μs) | Handles repetitive surge events in automotive load-dump-adjacent circuits without thermal runaway. |
| Unidirectional configuration | Optimized for DC-biased lines like CAN, LIN, or sensor supply rails where only one polarity of surge is expected. |
| SOD-123W footprint compatibility | Enables drop-in replacement or layout reuse with existing SOD-123W land patterns, reducing redesign effort. |
| AEC-Q101 qualification | Validated for automotive production use with full stress-test reporting, supporting PPAP documentation requirements. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L lines in vehicle body control modules against ESD from connector handling and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed directly at connector entry point to clamp transients before reaching CAN transceiver. Use Value: Maintains CAN FD signal integrity up to 5 Mbps by limiting capacitance to 324 pF while surviving ±30 kV ESD and ISO 7637-2 pulses. | Use Scenario: Safeguarding analog outputs (4–20 mA) and digital I/O of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Standoff-clamp TVS on sensor output traces to suppress coupling from nearby motor drives or relay coils. Use Value: Prevents latch-up or damage to ADC inputs by clamping 17 V-rated lines to ≤27.6 V during 7.2 A surges, with −65 °C to +175 °C operational range. |
| USB 2.0 Port ESD Protection | Automotive Infotainment Display Link |
Use Scenario: ESD hardening of D+ and D− lines in USB 2.0 host ports on embedded dashboards or telematics units. IC Role / Device Role / Timing Role: Unidirectional TVS on each data line referenced to local ground, placed adjacent to USB connector. Use Value: Provides ±30 kV contact discharge protection while maintaining <150 Ω dynamic impedance and preserving signal rise/fall times for 480 Mbps operation. | Use Scenario: Transient suppression on LVDS or FPD-Link II video interface cables between head unit and center display. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential pairs to prevent ESD-induced pixel corruption or link reset. Use Value: 324 pF capacitance avoids skew between differential signals; 175 °C max junction temperature supports sealed display enclosure environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A-E3/57T | Higher clamping voltage (33.2 V), larger SMA package (4.5 mm × 2.7 mm), 400 pF capacitance. | Less suitable for high-speed CAN FD or USB 2.0 due to higher capacitance and slower response. | Select when board space allows larger footprint and higher clamping tolerance is acceptable. |
| TPD2E001DRYR | Bi-directional dual-channel ESD array, 15 pF per channel, 5 V VRWM, integrated 5 V rail clamp. | Designed for low-voltage, high-speed interfaces (I²C, GPIO); not rated for 12 V automotive bus protection. | Prefer for portable electronics or low-voltage MCU I/O; avoid for 17 V standby-line protection. |
Compared with SMAJ17A-E3/57T and TPD2E001DRYR, the SMF17A-E3-08 offers optimal balance of low profile, 17 V standoff, 324 pF capacitance, and AEC-Q101 qualification - making it uniquely suited for space-constrained, high-reliability automotive data line protection where both voltage rating and ESD robustness are critical.
Availability
SMF17A-E3-08 is available at Aetrix Electronics and suitable for automotive CAN bus protection, industrial sensor interface hardening, and USB 2.0 port ESD mitigation requiring stable component supply across long-lifecycle programs.
Supply support for SMF17A-E3-08 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
Vishay Semiconductors is a global leader in discrete semiconductors, specializing in power management, sensing, and protection devices with emphasis on automotive, industrial, and computing applications.
The SMF series targets high-reliability transient suppression in compact surface-mount formats, specifically engineered for AEC-Q101 compliance and integration into next-generation automotive ECUs and industrial edge nodes.
FAQ
What is the clamping voltage of the SMF17A-E3-08 at its rated peak pulse current?
The SMF17A-E3-08 has a maximum clamping voltage (VC) of 27.6 V at its rated peak pulse current (IPPM) of 7.2 A using a 10/1000 μs waveform. This value is measured per the Electrical Characteristics table in Vishay's Document Number 85881 Rev. 2.4 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMF17A-E3-08 maintains this clamping performance across its full operating temperature range.
Is the SMF17A-E3-08 suitable for bidirectional signal lines like RS-485?
No, the SMF17A-E3-08 is a unidirectional TVS diode optimized for DC-biased lines such as automotive CAN or sensor supply rails. It does not provide symmetrical clamping for AC-coupled or true bidirectional interfaces. For RS-485, a bidirectional device like SMBJ15CA or dedicated RS-485 ESD arrays is required. The SMF17A-E3-08 must be applied with correct polarity relative to ground.
Does the SMF17A-E3-08 meet AEC-Q101 requirements for automotive use?
Yes, the SMF17A-E3-08 is explicitly AEC-Q101 qualified per Vishay's documentation (Rev. 2.4, 04-Jul-2023). It passes stress tests including human body model (HBM Class H3B >8 kV), temperature cycling, high-temperature gate bias, and ESD per IEC 61000-4-2. This qualification is confirmed in the "FEATURES" section and "ABSOLUTE MAXIMUM RATINGS" table of the official datasheet for SMF17A-E3-08.
What is the thermal resistance (RthJA) of the SMF17A-E3-08 under standard PCB mounting conditions?
The SMF17A-E3-08 has a junction-to-ambient thermal resistance (RthJA) of 180 K/W when mounted on an epoxy-glass PCB with 3 mm × 3 mm copper pads ≥40 μm thick. This value is specified in the Absolute Maximum Ratings table and is critical for estimating junction temperature rise during repeated surge events. Derating is required above +70 °C ambient per Vishay's thermal guidelines.
Can the SMF17A-E3-08 be used in place of the SMF15A or SMF18A in a design?
The SMF17A-E3-08 is not a direct substitute for SMF15A (15 V VRWM) or SMF18A (18 V VRWM) without circuit review: its 17 V stand-off voltage places it between them, and clamping voltages differ (24.4 V for SMF15A, 29.2 V for SMF18A). Using SMF17A-E3-08 may cause premature clamping in 15 V systems or insufficient margin in 18 V systems. Verify VRWM alignment with system operating voltage before interchange.
SMF17A-E3-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-219AB
- Series:
- eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 7.2A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 324pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF17A-E3-08 FAQ
1.How can I place an order for SMF17A-E3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF17A-E3-08 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 SMF17A-E3-08 reliable?
The price and inventory of SMF17A-E3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF17A-E3-08 is usually 5 days.
3.What payment methods are accepted for SMF17A-E3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF17A-E3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF17A-E3-08?
SMF17A-E3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF17A-E3-08 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 SMF17A-E3-08?
For technical support, including SMF17A-E3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF17A-E3-08 requirements.
6.How does Aetrix verify that SMF17A-E3-08 is sourced from the original manufacturer or authorized distributors?
All SMF17A-E3-08 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 SMF17A-E3-08 meets industry standards.
7.What is the process for return or replacement of SMF17A-E3-08?
All SMF17A-E3-08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF17A-E3-08, 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 SMF17A-E3-08 part is unused and in its original packaging.
Return procedure for SMF17A-E3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF17A-E3-08 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
