My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMF7V0A-HM3-18
- Part No.:
- SMF7V0A-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF7V0A-HM3-18.pdf
- Description:
- TVS DIODE 7VWM 12VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:5,542
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMF7V0A-HM3-18 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for low-capacitance transient voltage suppression on high-speed data lines. It features a 7 V standoff voltage (VRWM), 12 V maximum clamping voltage at 16.7 A peak pulse current, 843 pF typical capacitance at 0 V, ±30 kV IEC 61000-4-2 ESD immunity, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMF7V0A-HM3-18 datasheet, SMF7V0A-HM3-18 pinout, SMF7V0A-HM3-18 application, or SMF7V0A-HM3-18 equivalent, this device is selected for robust ESD hardening of USB 2.0, HDMI, CAN FD, and automotive infotainment interfaces where low clamping voltage and sub-nanosecond response are critical to signal integrity and IC survivability.
Technical Context
This diode operates as a unidirectional avalanche clamp with a 7.78 V minimum breakdown voltage at 10 mA test current and 8.6 V maximum. Its low incremental surge resistance enables tight clamping during fast transients, while its "Low Noise" technology ensures sub-1 ns response time-critical for protecting high-frequency analog and digital signal paths.
The device is rated for 200 W peak pulse power (10/1000 μs), 1000 W per IEC 61000-4-5 (8/20 μs), and supports continuous operation from –65 °C to +175 °C. Its SOD-123W-compatible DO-219AB package delivers thermal resistance of 180 K/W on standard epoxy-glass PCBs with 3 mm × 3 mm Cu pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 7 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 5 V–7 V signal rails. |
| Clamping Voltage (VC) | 12 V max at IPPM = 16.7 A - Limits transient voltage seen by downstream ICs during ESD events; enables compatibility with 12 V-tolerant I/O. |
| Capacitance (CD) | 843 pF at VR = 0 V, f = 1 MHz - Low enough for USB 2.0 (480 Mbps) and CAN FD (5 Mbps) without signal distortion or insertion loss. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - Meets highest industrial and automotive ESD immunity requirements without external shielding. |
| Package | DO-219AB (SOD-123W footprint) - 3.9 mm × 1.9 mm × 1.08 mm low-profile package compatible with automated SMT assembly and reflow profiles up to 260 °C. |
| AEC-Q101 Qualified | Yes - Validated for automotive underhood and cabin applications including infotainment, ADAS sensors, and body control modules. |
| Operating Temp Range | –65 °C to +175 °C - Supports extended temperature operation in engine control units and powertrain electronics. |
Pinout & Package
SMF7V0A-HM3-18 uses the DO-219AB (SMF) package: a two-terminal, cathode-marked, surface-mount plastic case with dimensions 3.9 mm × 1.9 mm × 1.08 mm. The cathode bar is located at terminal 2; terminal 1 is anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Terminal 1) | Input side of protection path | Connected to protected line (e.g., USB D+); conducts surge current toward ground when clamped. |
| Cathode (Terminal 2) | Ground reference node | Connected to system ground or chassis; establishes clamping reference and completes ESD current path. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Handles repeated ESD strikes without degradation-enables long-term reliability in field-deployed equipment. |
| ±30 kV IEC 61000-4-2 ESD immunity | Eliminates need for secondary board-level shielding in consumer and automotive interfaces. |
| 843 pF capacitance at 0 V | Preserves signal rise/fall times on 480 Mbps USB 2.0 and 5 Mbps CAN FD buses without jitter or eye closure. |
| AEC-Q101 qualified | Validated for automotive-grade stress testing (HTOL, TC, UHAST), enabling drop-in use in Tier-1 ECUs. |
| Low-profile DO-219AB package | Reduces PCB real estate and improves thermal coupling to copper pour-enhances power dissipation during surge events. |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
|
Use Scenario: Protecting D+ and D− differential pairs in portable media players and automotive head units against ESD during cable insertion. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between connector and USB PHY IC. Use Value: Clamps transients to ≤12 V within <1 ns, preserving USB 2.0 eye diagram integrity and preventing PHY latch-up. |
Use Scenario: Safeguarding TMDS clock and data channels in automotive infotainment displays exposed to user touch and environmental ESD. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp on each TMDS lane, mounted adjacent to HDMI connector. Use Value: 843 pF capacitance avoids signal attenuation above 250 MHz, maintaining HDMI 1.4 compliance up to 1080p60. |
| Automotive CAN FD Bus Protection | Industrial Sensor Interface Protection |
|
Use Scenario: Hardening CAN_H and CAN_L lines in battery management systems (BMS) and ADAS domain controllers against ISO 10605 and IEC 61000-4-2 events. IC Role / Device Role / Timing Role: Bidirectional protection pair (two SMF7V0A-HM3-18 devices) across differential CAN bus. Use Value: 7 V VRWM aligns with 5 V CAN FD transceiver common-mode range; 12 V VC prevents bus lockup during 30 kV contact discharge. |
Use Scenario: Shielding analog outputs (4–20 mA, 0–10 V) and digital I/O (RS-485, SPI) in factory automation PLC modules from ESD in dusty, high-static environments. IC Role / Device Role / Timing Role: Point-of-entry ESD suppressor on sensor interface connectors and PCB edge headers. Use Value: –65 °C to +175 °C rating ensures stable clamping performance across industrial ambient extremes without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0A-E3/5A (Vishay) | Higher 13.7 V clamping voltage at 12.3 A; SMA (DO-214AC) package (4.5 mm × 2.7 mm). | Less suitable for high-speed data lines due to higher capacitance (~1200 pF) and larger footprint. | Select SMAJ7.0A-E3/5A only when board space allows larger package and signal bandwidth is below 100 MHz. |
| TPD2E007DRYR (TI) | Lower 0.9 pF capacitance but 12 V VRWM; dual-channel array in SOT-563; not AEC-Q101 qualified. | Optimized for ultra-high-speed USB 3.0/PCIe but lacks automotive qualification and single-line flexibility. | Choose TPD2E007DRYR for consumer-grade high-speed serial links; avoid in automotive or industrial BOMs requiring AEC-Q101 traceability. |
Compared with SMAJ7.0A-E3/5A and TPD2E007DRYR, SMF7V0A-HM3-18 uniquely balances automotive qualification, low clamping (12 V), moderate capacitance (843 pF), and compact DO-219AB packaging-making it optimal for cost-sensitive, space-constrained CAN FD and USB 2.0 designs requiring full AEC-Q101 compliance.
Availability
SMF7V0A-HM3-18 is available at Aetrix Electronics and suitable for automotive infotainment, industrial sensor interfaces, and USB 2.0 peripheral protection requiring stable component supply, full AEC-Q101 documentation, and RoHS-compliant lead-free terminations.
Supply support for SMF7V0A-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 Intertechnology is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability solutions for automotive, industrial, and computing markets.
The SMF series targets high-speed data line protection with AEC-Q101 qualification, low capacitance, and precise clamping-designed specifically for automotive infotainment, ADAS, and industrial communication interfaces demanding robust ESD resilience.
FAQ
What is the clamping voltage of SMF7V0A-HM3-18 at its rated peak pulse current?
The SMF7V0A-HM3-18 has a maximum clamping voltage (VC) of 12 V at its rated peak pulse current (IPPM) of 16.7 A using a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and ensures downstream ICs experience no more than 12 V during worst-case ESD transients. The SMF7V0A-HM3-18 maintains this clamping performance across its full operating temperature range of –65 °C to +175 °C.
Is SMF7V0A-HM3-18 qualified to AEC-Q101, and what does that mean for automotive use?
Yes, SMF7V0A-HM3-18 is AEC-Q101 qualified, meaning it has passed accelerated stress tests-including high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress test (UHAST)-specifically defined for discrete semiconductors in automotive applications. This qualification validates the SMF7V0A-HM3-18 for use in engine control units, body electronics, and infotainment systems where reliability under thermal and mechanical stress is mandatory.
What is the capacitance of SMF7V0A-HM3-18, and how does it affect high-speed signal integrity?
The SMF7V0A-HM3-18 exhibits 843 pF typical junction capacitance at 0 V reverse bias and 1 MHz frequency. This value is low enough to avoid measurable signal degradation on USB 2.0 (480 Mbps) and CAN FD (5 Mbps) buses, preserving rise/fall times and eye opening. Higher capacitance would increase RC delay and insertion loss; the SMF7V0A-HM3-18's 843 pF strikes a verified balance between ESD robustness and signal fidelity.
Can SMF7V0A-HM3-18 be used for bidirectional protection, and if not, what is required?
No, SMF7V0A-HM3-18 is a unidirectional ESD protection diode and must be used with anode-to-line and cathode-to-ground configuration. For bidirectional protection (e.g., on symmetric differential lines like CAN or RS-485), two SMF7V0A-HM3-18 devices are required-one anode-to-line/cathode-to-ground and one cathode-to-line/anode-to-ground-or a dedicated bidirectional part such as SMF7V0AY-HM3-18 (if available). The SMF7V0A-HM3-18 datasheet explicitly specifies unidirectional operation.
What is the package type and soldering compatibility of SMF7V0A-HM3-18?
SMF7V0A-HM3-18 uses the DO-219AB (SMF) package-a low-profile, surface-mount outline identical to SOD-123W-with dimensions 3.9 mm × 1.9 mm × 1.08 mm. It is fully compatible with standard wave and reflow soldering processes, including peak temperatures up to 260 °C per J-STD-020 MSL level 1. The SMF7V0A-HM3-18's molded compound meets UL 94 V-0 flammability rating and is rated for moisture sensitivity level 1, eliminating bake requirements prior to assembly.
SMF7V0A-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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 16.7A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 843pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF7V0A-HM3-18 FAQ
1.How can I place an order for SMF7V0A-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF7V0A-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 SMF7V0A-HM3-18 reliable?
The price and inventory of SMF7V0A-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 SMF7V0A-HM3-18 is usually 5 days.
3.What payment methods are accepted for SMF7V0A-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF7V0A-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF7V0A-HM3-18?
SMF7V0A-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF7V0A-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 SMF7V0A-HM3-18?
For technical support, including SMF7V0A-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF7V0A-HM3-18 requirements.
6.How does Aetrix verify that SMF7V0A-HM3-18 is sourced from the original manufacturer or authorized distributors?
All SMF7V0A-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 SMF7V0A-HM3-18 meets industry standards.
7.What is the process for return or replacement of SMF7V0A-HM3-18?
All SMF7V0A-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF7V0A-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 SMF7V0A-HM3-18 part is unused and in its original packaging.
Return procedure for SMF7V0A-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF7V0A-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 …
