My Inquiry
My Account
Vishay SMF30A-HM3_A08
- Part No.:
- SMF30A-HM3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF30A-HM3_A08.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,971
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMF30A-HM3_A08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for robust transient voltage suppression in high-speed data lines. It features a 30 V stand-off voltage (VRWM), 48.4 V maximum clamping voltage at 4.1 A peak pulse current, ±30 kV IEC 61000-4-2 ESD immunity, and 200 W peak pulse power (10/1000 μs). It is widely used in USB 2.0, HDMI, and industrial sensor interfaces requiring low-capacitance surge protection.
For engineers reviewing the SMF30A-HM3_A08 datasheet, SMF30A-HM3_A08 pinout, SMF30A-HM3_A08 application, or SMF30A-HM3_A08 equivalent, this page delivers verified electrical parameters, package dimensions, real-world clamping behavior, AEC-Q101 qualification status, and direct alternative part comparisons - all aligned to Vishay's Rev. 2.4 specification document #85881.
Technical Context
This device operates as a single-channel unidirectional TVS diode with avalanche breakdown mechanism, optimized for fast response (<1 ns) and low dynamic impedance. Its 207 pF typical capacitance at 0 V and 1 MHz enables use in signal paths up to ~100 MHz without significant signal integrity degradation.
The SMF30A-HM3_A08 is rated for continuous operation from –65 °C to +175 °C, with thermal resistance RthJA = 180 K/W on standard 3 mm × 3 mm Cu pads, supporting high-reliability deployment in automotive and industrial environments where ambient temperature extremes and board-level power dissipation must be tightly managed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 30 V - Maximum continuous reverse operating voltage before leakage exceeds 0.1 µA; defines safe working range for protected line. |
| Clamping Voltage (VC) | 48.4 V at IPPM = 4.1 A (10/1000 µs) - Peak voltage seen by downstream circuit during worst-case surge; ensures IC-level protection compliance. |
| Peak Pulse Power | 200 W (10/1000 µs) - Sustains short-duration transients without failure; supports IEC 61000-4-5 Level 3 surge immunity. |
| ESD Immunity | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - Meets highest industrial ESD stress requirements without degradation. |
| Capacitance | 207 pF at VR = 0 V, f = 1 MHz - Low enough for USB 2.0 (480 Mbps) and CAN FD signal integrity; avoids excessive rise-time distortion. |
| Package | DO-219AB (SOD-123W compatible) - 3.9 mm × 1.9 mm × 1.08 mm low-profile footprint enabling dense PCB layouts and automated reflow assembly. |
| Operating Temp | –65 °C to +175 °C - Qualified for under-hood automotive, motor drives, and harsh-environment industrial control systems. |
Pinout & Package
SMF30A-HM3_A08 uses the DO-219AB (SMF) package: an asymmetrical surface-mount case with cathode marking bar on one end. The device has two terminals: anode and cathode - no internal connections or multi-pin configuration. Mounting follows standard SOD-123W land pattern per Vishay's footprint recommendation (2.9 mm × 1.4 mm pad length/width).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side connection | Connected to signal or power line being protected; carries surge current into device during overvoltage event. |
| Cathode | Ground reference terminal | Connected to system ground or low-impedance return path; establishes clamping reference and completes transient current loop. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise fast-response technology | Sub-nanosecond response time ensures clamping activation before sensitive ICs experience overstress - critical for high-speed serial links. |
| AEC-Q101 qualified | Validated for automotive applications including infotainment and body electronics, with H3B-class ESD robustness (>8 kV HBM). |
| Wave and reflow solderable | Compatible with standard Pb-free reflow profiles (peak ≤260 °C); eliminates manual soldering risk and supports high-volume manufacturing. |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation meets flame-retardancy requirements for industrial and transportation safety certifications. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH - no baking required prior to assembly, reducing production overhead and moisture-related defects. |
Applications
| USB 2.0 Data Lines | HDMI Interface Protection |
|---|---|
Use Scenario: Protecting D+ and D– differential pairs in portable media devices against ESD events during cable insertion or handling. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between each data line and ground, clamping transients while preserving signal edge fidelity. Use Value: 207 pF capacitance minimizes bit-error rate increase; ±30 kV ESD rating prevents port lockup or PHY damage in consumer-grade docking stations. | Use Scenario: Safeguarding TMDS clock and data channels in set-top boxes and AV receivers exposed to user-accessible connectors. IC Role / Device Role / Timing Role: Standoff-rated clamping device shunting surges away from HDMI transmitter/receiver ICs without loading the 100 Ω differential impedance. Use Value: 48.4 V clamping voltage stays well below HDMI IC absolute maximum ratings (typically 5.5 V supply + 0.5 V tolerance), preventing latch-up or permanent damage. |
| Automotive Sensor Interfaces | Industrial RS-485 Transceivers |
Use Scenario: Shielding LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control modules from load-dump and ESD coupling. IC Role / Device Role / Timing Role: Primary front-end transient suppressor mounted directly at connector entry point, preceding filtering and signal conditioning stages. Use Value: –65 °C to +175 °C operating range matches under-hood thermal cycling; AEC-Q101 qualification confirms reliability across 15-year vehicle lifetimes. | Use Scenario: Protecting half-duplex RS-485 nodes in factory automation PLCs from induced lightning surges and ground potential differences. IC Role / Device Role / Timing Role: Bidirectional protection not applicable - SMF30A-HM3_A08 deployed as unidirectional clamp on receiver inputs referenced to local ground. Use Value: 200 W peak pulse power handles 1 kV/0.5 A IEC 61000-4-5 surge waveforms; low clamping ensures transceiver remains within common-mode input range during fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/57T | DO-214AC (SMA) package; 3.5 mm × 4.3 mm footprint; higher RthJA (200 K/W); same VRWM/VC specs. | Larger board area required; less suitable for ultra-dense layouts like mobile PCBs. | Choose when legacy SMA footprint compatibility is mandatory and thermal margin allows higher junction temp rise. |
| TPD2E001DRYR | 2-channel, 15 pF dual-diode array in SOT-553; lower clamping (12 V @ 1 A); not AEC-Q101 qualified. | Optimized for low-capacitance USB/SDIO; insufficient for >20 V line protection or automotive use. | Prefer for space-constrained, low-voltage digital I/O where sub-20 pF is essential and automotive qualification is unnecessary. |
Compared with SMAJ30A-E3/57T and TPD2E001DRYR, SMF30A-HM3_A08 uniquely balances compact DO-219AB size, automotive-grade reliability, and robust 48.4 V clamping - making it optimal for next-generation industrial and automotive interfaces where board space, thermal performance, and qualification rigor are jointly constrained.
Availability
SMF30A-HM3_A08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive sensor signal conditioning, and industrial RS-485 node hardening requiring stable component supply and long-term lifecycle assurance.
Supply support for SMF30A-HM3_A08 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 high-speed data line protection with AEC-Q101 qualification, low capacitance, and industry-leading ESD robustness - engineered specifically for modern connectivity interfaces facing increasingly stringent EMC and reliability standards.
FAQ
What is the maximum clamping voltage of SMF30A-HM3_A08 under standard test conditions?
The SMF30A-HM3_A08 exhibits a maximum clamping voltage (VC) of 48.4 V when subjected to a 10/1000 µs waveform with a peak pulse current (IPPM) of 4.1 A. This value is measured per Vishay's specification document #85881 and defines the upper voltage limit imposed on protected circuitry during surge events - ensuring downstream ICs remain within safe operating limits. The SMF30A-HM3_A08 maintains this clamping performance across its full operating temperature range.
Is SMF30A-HM3_A08 qualified to AEC-Q101 for automotive use?
Yes, SMF30A-HM3_A08 is AEC-Q101 qualified and rated for human body model (HBM) Class H3B (>8 kV). This qualification confirms its suitability for automotive applications including body electronics, infotainment systems, and sensor interfaces subject to rigorous environmental and reliability testing. The SMF30A-HM3_A08 meets all stress tests defined in AEC-Q101 Rev. D, including temperature cycling, humidity bias, and ESD robustness validation.
What is the package type and physical size of SMF30A-HM3_A08?
SMF30A-HM3_A08 uses the DO-219AB (SMF) package, measuring 3.9 mm in length, 1.9 mm in width, and 1.08 mm in height. It is compatible with SOD-123W land patterns and features a cathode marking bar. The package is UL 94 V-0 rated, MSL Level 1, and supports both wave and reflow soldering - making SMF30A-HM3_A08 ideal for high-density, high-reliability PCB assemblies in automotive and industrial settings.
Does SMF30A-HM3_A08 support high-speed data lines such as USB 2.0?
Yes, SMF30A-HM3_A08 supports USB 2.0 with a typical capacitance of 207 pF at 0 V and 1 MHz. While higher than some specialized low-C arrays, this value preserves signal integrity for full-speed (480 Mbps) operation when placed with proper layout practices (short traces, ground plane proximity). Its fast response time and low dynamic impedance ensure effective ESD suppression without compromising eye diagram margins - a key advantage of the SMF30A-HM3_A08 in cost-sensitive, high-volume USB implementations.
What is the peak pulse power rating of SMF30A-HM3_A08 and how does it relate to surge immunity?
The SMF30A-HM3_A08 has a peak pulse power rating of 200 W for a 10/1000 µs waveform and 1000 W for an 8/20 µs waveform per IEC 61000-4-5. This rating quantifies its ability to absorb transient energy without failure - directly enabling compliance with Level 3 (1 kV line-to-ground) surge immunity requirements in industrial equipment. The SMF30A-HM3_A08 sustains these pulses with minimal parameter shift, ensuring long-term protection integrity across repeated surge events.
SMF30A-HM3_A08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- DO-219AB
- Series:
- eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 207pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF30A-HM3_A08 FAQ
1.How can I place an order for SMF30A-HM3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF30A-HM3_A08 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 SMF30A-HM3_A08 reliable?
The price and inventory of SMF30A-HM3_A08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF30A-HM3_A08 is usually 5 days.
3.What payment methods are accepted for SMF30A-HM3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF30A-HM3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF30A-HM3_A08?
SMF30A-HM3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF30A-HM3_A08 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 SMF30A-HM3_A08?
For technical support, including SMF30A-HM3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF30A-HM3_A08 requirements.
6.How does Aetrix verify that SMF30A-HM3_A08 is sourced from the original manufacturer or authorized distributors?
All SMF30A-HM3_A08 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 SMF30A-HM3_A08 meets industry standards.
7.What is the process for return or replacement of SMF30A-HM3_A08?
All SMF30A-HM3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF30A-HM3_A08, 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 SMF30A-HM3_A08 part is unused and in its original packaging.
Return procedure for SMF30A-HM3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF30A-HM3_A08 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 …
