My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMF13A-HM3-18
- Part No.:
- SMF13A-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF13A-HM3-18.pdf
- Description:
- TVS DIODE 13VWM 21.5VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:3,580
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMF13A-HM3-18 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 and power rails. It features a 13 V stand-off voltage (VRWM), 21.5 V maximum clamping voltage at 9.3 A peak pulse current, ±30 kV IEC 61000-4-2 ESD immunity, and 200 W peak pulse power (10/1000 μs). It is used in USB 2.0, HDMI, and automotive infotainment interfaces to safeguard sensitive ICs.
For engineers reviewing the SMF13A-HM3-18 datasheet, SMF13A-HM3-18 pinout, SMF13A-HM3-18 application, or SMF13A-HM3-18 equivalent, key selection criteria include clamping voltage under 22 V at 9.3 A, low 423 pF capacitance at 0 V, AEC-Q101 qualification, SOD-123W-compatible DO-219AB packaging, and compliance with IEC 61000-4-2 Class 4 ESD requirements.
Technical Context
This device operates as a single-channel unidirectional TVS diode, leveraging silicon avalanche breakdown to clamp transients above its reverse standoff voltage of 13 V. Its low incremental surge resistance ensures rapid response and minimal voltage overshoot during ESD events.
The SMF13A-HM3-18 is optimized for board-level protection in space-constrained applications, with a 1.08 mm max height and MSL Level 1 moisture sensitivity rating. It supports wave and reflow soldering per J-STD-020, with peak temperature tolerance up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 13 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 12 V nominal systems. |
| Clamping Voltage (VC) | 21.5 V max at IPPM = 9.3 A - Limits transient voltage seen by downstream ICs during 10/1000 μs surges. |
| Peak Pulse Power (PPP) | 200 W (10/1000 μs) - Sustains defined surge energy without failure; validated per IEC 61000-4-5 waveform. |
| Capacitance (CD) | 423 pF at VR = 0 V, f = 1 MHz - Low enough for USB 2.0 (480 Mbps) signal integrity; avoids excessive signal attenuation. |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - Meets highest industrial and automotive ESD immunity class. |
| AEC-Q101 Qualified | Yes - Validated for automotive underhood and cabin applications per stress test requirements. |
| Package | DO-219AB (SOD-123W compatible) - 3.9 × 1.9 × 1.08 mm low-profile outline enabling dense PCB layouts. |
Pinout & Package
SMF13A-HM3-18 uses the DO-219AB (SMF) package: a two-terminal, cathode-marked, surface-mount plastic case with molded cathode bar. Dimensions are 3.9 mm (L) × 1.9 mm (W) × 1.08 mm (H); footprint requires 2.9 mm × 1.4 mm pad area with 1.3 mm solder mask opening per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected line or ground reference | Connected to system ground or return path; forms clamping loop with cathode during transient events. |
| Cathode | High-side connection to protected signal or supply rail | Connected to I/O line or power rail; conducts avalanche current when voltage exceeds VRWM + dynamic margin. |
Key Features
| Feature | Design Value |
|---|---|
| "Low Noise" fast-response technology | Sub-nanosecond response time enables effective clamping of ESD pulses with <1 ns rise time (per IEC 61000-4-2). |
| Low incremental surge resistance | Minimizes voltage overshoot during high-di/dt transients, improving clamping predictability across surge currents. |
| AEC-Q101 qualified variant | Validated for automotive environments including temperature cycling, HTRB, and mechanical shock per AEC standard. |
| Reflow/wave solder compatible | Rated for peak reflow temperatures up to 260 °C (J-STD-020), supporting standard PCB assembly processes. |
| UL 94 V-0 molding compound | Ensures flame-retardant behavior in end equipment, meeting safety compliance for industrial and automotive enclosures. |
Applications
| USB 2.0 Data Lines | HDMI Interface Protection |
|---|---|
Use Scenario: Protecting D+ and D− differential pairs in portable and automotive USB hosts/peripherals against ESD events. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between each data line and ground, shunting ESD current away from USB transceivers. Use Value: 423 pF capacitance preserves signal integrity at 480 Mbps; 21.5 V clamping prevents damage to 3.3 V tolerant PHYs. |
Use Scenario: Safeguarding TMDS clock and data channels in automotive head units and display modules from connector-induced ESD. IC Role / Device Role / Timing Role: Discrete TVS diode installed on each TMDS lane (CLK+, CLK−, DATA0+, DATA0−, etc.) with cathode tied to signal line. Use Value: ±30 kV ESD rating meets automotive OEM requirements; DO-219AB footprint fits tight HDMI connector routing. |
| Automotive Infotainment Power Rails | Industrial Sensor Signal Conditioning |
Use Scenario: Suppressing load dump and ISO 7637-2 transients on 12 V supply inputs to infotainment head units and telematics control units. IC Role / Device Role / Timing Role: Standoff-rated TVS diode connected between VCC and GND, absorbing repetitive surges without degradation. Use Value: 200 W peak pulse power handles multiple 10/1000 μs surges; -65 °C to +175 °C operating range supports under-hood thermal profiles. |
Use Scenario: Protecting analog outputs (e.g., 4–20 mA loops) and digital sensor I/O (I²C, SPI) in factory automation modules exposed to field wiring ESD. IC Role / Device Role / Timing Role: Point-of-entry protection element mounted directly at connector pins, limiting transient voltage before signal conditioning circuitry. Use Value: 13 V VRWM aligns with 12 V sensor supply rails; low leakage (<0.1 μA) avoids measurement drift in precision analog paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A-E3/57T | DO-214AC (SMA) package; 200 W PPP; 23.2 V VC at 9.2 A; 500 pF capacitance. | Larger footprint (4.5 × 2.7 mm) and higher capacitance limit use in >100 Mbps interfaces. | Preferred where board space allows and lower cost is prioritized over high-speed signal integrity. |
| TPD2E001DRYR | 2-channel bidirectional array in SOT-553; 15 pF typical capacitance; 12 V VRWM; not AEC-Q101 qualified. | Designed for ultra-low-capacitance USB/MIPI protection; lacks automotive qualification and single-line surge rating. | Selected for mobile consumer interfaces requiring sub-20 pF loading, not for automotive or high-energy transient environments. |
Compared with SMF13A-HM3-18, SMAJ13A-E3/57T offers comparable surge handling but sacrifices layout density and signal fidelity due to larger size and higher capacitance, while TPD2E001DRYR enables miniaturization and low-capacitance performance but lacks AEC-Q101 validation and single-line 200 W capability.
Availability
SMF13A-HM3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor interfaces, USB 2.0 peripherals, and HDMI display modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMF13A-HM3-18 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMF series targets board-level ESD and surge protection in space-constrained, high-reliability applications-designed specifically to meet AEC-Q101, IEC 61000-4-2, and IEC 61000-4-5 requirements with optimized clamping and low capacitance.
FAQ
What is the clamping voltage of SMF13A-HM3-18 at its rated peak pulse current?
The SMF13A-HM3-18 has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current (IPPM) of 9.3 A under a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet and defines the upper voltage limit imposed on protected circuitry during surge events. The SMF13A-HM3-18 maintains this clamping performance across its full operating temperature range.
Is SMF13A-HM3-18 qualified to AEC-Q101?
Yes, SMF13A-HM3-18 is AEC-Q101 qualified, as confirmed in the Vishay SMF family datasheet (Rev. 2.4, July 2023). This qualification covers stress tests including HTGB, HTRB, temperature cycling, and mechanical shock, validating suitability for automotive applications such as infotainment, ADAS sensors, and body electronics. The "H" in the part number denotes AEC-Q101 qualification.
What package does SMF13A-HM3-18 use, and how does it compare to SOD-123W?
SMF13A-HM3-18 uses the DO-219AB package, which Vishay explicitly states is compatible with SOD-123W, SOD-123F, and SOD-123FL outlines. Its dimensions are 3.9 mm × 1.9 mm × 1.08 mm, matching SOD-123W's length and width while offering identical solder pad compatibility and reflow profile support. The DO-219AB is an eSMP®-branded variant optimized for low-profile, high-power density mounting.
Does SMF13A-HM3-18 support both contact and air discharge ESD testing per IEC 61000-4-2?
Yes, SMF13A-HM3-18 delivers ±30 kV ESD immunity for both contact discharge and air discharge per IEC 61000-4-2, tested with 10 pulses per polarity. This performance is documented in the Absolute Maximum Ratings table and confirmed in the Features section of the Vishay datasheet. The SMF13A-HM3-18 achieves this using low-noise avalanche structure and optimized junction design.
What is the typical capacitance of SMF13A-HM3-18, and why does it matter for high-speed interfaces?
The SMF13A-HM3-18 has a typical capacitance of 423 pF at 0 V and 1 MHz, as specified in the Electrical Characteristics table. This value is critical for high-speed interfaces like USB 2.0: too high a capacitance causes signal rise/fall time degradation and bit error rate increase. At 423 pF, the SMF13A-HM3-18 remains suitable for full-speed (480 Mbps) operation when placed with proper layout isolation and trace length control.
SMF13A-HM3-18 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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 423pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF13A-HM3-18 FAQ
1.How can I place an order for SMF13A-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF13A-HM3-18 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 SMF13A-HM3-18 reliable?
The price and inventory of SMF13A-HM3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF13A-HM3-18 is usually 5 days.
3.What payment methods are accepted for SMF13A-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF13A-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF13A-HM3-18?
SMF13A-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF13A-HM3-18 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 SMF13A-HM3-18?
For technical support, including SMF13A-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF13A-HM3-18 requirements.
6.How does Aetrix verify that SMF13A-HM3-18 is sourced from the original manufacturer or authorized distributors?
All SMF13A-HM3-18 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 SMF13A-HM3-18 meets industry standards.
7.What is the process for return or replacement of SMF13A-HM3-18?
All SMF13A-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF13A-HM3-18, 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 SMF13A-HM3-18 part is unused and in its original packaging.
Return procedure for SMF13A-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF13A-HM3-18 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 …
