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Vishay General Semiconductor - Diodes Division SMF58A-HM3-18
- Part No.:
- SMF58A-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF58A-HM3-18.pdf
- Description:
- TVS DIODE 58VWM 95VC SMF
- Quantity:
- Payment:
- Shipping:
Inventory:2,948
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Product details
Overview
SMF58A-HM3-18 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, rated for 58 V standoff voltage, 95 A peak pulse current (10/1000 μs), 95 V maximum clamping voltage, 144 pF typical capacitance at 1 MHz, and ±30 kV IEC 61000-4-2 ESD immunity - deployed for high-reliability transient suppression on USB 2.0 data lines, HDMI hot-plug interfaces, and automotive infotainment I/O.
For engineers reviewing the SMF58A-HM3-18 datasheet, SMF58A-HM3-18 pinout, SMF58A-HM3-18 application, or SMF58A-HM3-18 equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, thermal resistance (180 K/W), and AEC-Q101 qualification status to support robust ESD design-in decisions.
Technical Context
The SMF58A-HM3-18 operates as a unidirectional TVS diode with avalanche breakdown mechanism, optimized for fast response (<1 ns) and low incremental surge resistance to clamp transients before system-level damage occurs. Its junction temperature range spans –65 °C to +175 °C, and it sustains 200 W peak pulse power per 10/1000 μs waveform at 0.01% duty cycle.
Designed for compatibility with SOD-123W/SOD-123F/SOD-123FL footprints, the device uses epoxy molding compound rated UL 94 V-0 and meets MSL Level 1 per J-STD-020 - enabling wave and reflow soldering without moisture sensitivity concerns. It is qualified to AEC-Q101 for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 58 V - maximum continuous reverse operating voltage before leakage exceeds 0.1 μA |
| Peak Pulse Current (IPPM) | 95 A - clamps 10/1000 μs surge events up to this amplitude while holding VC ≤ 95 V |
| Clamping Voltage (VC) | 95 V max at IPPM - limits downstream IC voltage stress during ESD or lightning-induced surges |
| Capacitance (CD) | 144 pF at VR = 0 V, f = 1 MHz - low enough for USB 2.0 (480 Mbps) and HDMI 1.4 signal integrity |
| ESD Immunity | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds industrial and automotive ESD test requirements |
| Thermal Resistance (RthJA) | 180 K/W - defines junction-to-ambient temperature rise under steady-state power dissipation on standard 3 mm × 3 mm Cu pads |
| AEC-Q101 Qualified | Yes - validated for automotive applications including infotainment, body control, and ADAS sensor interfaces |
Pinout & Package
SMF58A-HM3-18 is housed in the DO-219AB (SMF) package: low-profile (1.08 mm max height), 3.9 mm × 1.9 mm footprint, cathode-marked with bar, compatible with SOD-123W layout. Weight: 15 mg. Mold compound: UL 94 V-0 rated epoxy.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path | Connected to GND or low-impedance reference plane; carries full surge current during clamping |
| Cathode | Protected line connection | Connected to I/O line (e.g., USB D+, HDMI TMDS+); blocks reverse leakage below VRWM, avalanches above VBR |
Key Features
| Feature | Design Value |
|---|---|
| "Low Noise" fast-response technology | Sub-nanosecond response time ensures clamping initiates before sensitive logic thresholds are violated |
| 200 W peak pulse power (10/1000 μs) | Sustains repeated ESD strikes without degradation when used within specified duty cycle limits |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., IEC 61000-4-2 0.7–1 ns rise time) |
| AEC-Q101 qualification | Validated for automotive environments including temperature cycling, humidity bias, and mechanical shock |
| Reflow/wave solder compatible | Rated for peak solder temperature up to 260 °C - supports automated PCB assembly without delamination risk |
Applications
| USB 2.0 Data Lines | HDMI Hot-Plug Detection |
|---|---|
Use Scenario: Protecting D+ and D− lines against ESD events during cable insertion/removal in portable docking stations. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between data line and ground, clamping transients before they reach USB transceiver inputs. Use Value: 144 pF capacitance avoids signal integrity loss at 480 Mbps; 95 V clamping prevents damage to 3.3 V tolerant PHY circuitry. | Use Scenario: Safeguarding HDMI CEC and HPD pins from electrostatic discharge during consumer AV equipment interconnection. IC Role / Device Role / Timing Role: Standoff-rated TVS element connected inline with hot-plug detection circuitry to suppress contact discharge up to ±30 kV. Use Value: 58 V VRWM matches HDMI HPD logic-high threshold (typically 4.5–5.5 V) with ample margin; low leakage (<0.1 μA) avoids false HPD assertion. |
| Automotive Infotainment I/O | Industrial CAN FD Transceiver Protection |
Use Scenario: Shielding touchscreen controller GPIOs and audio codec I²S lines in vehicle head units exposed to cabin ESD. IC Role / Device Role / Timing Role: Primary ESD shunt on low-voltage digital I/O nets, leveraging AEC-Q101 qualification for under-hood and cabin deployment. Use Value: –65 °C to +175 °C operating range accommodates extended automotive thermal profiles; 180 K/W RthJA enables thermal stability on compact PCBs. | Use Scenario: Adding secondary ESD protection ahead of CAN FD transceivers in factory automation gateways where bus nodes face frequent operator interaction. IC Role / Device Role / Timing Role: Front-end transient suppressor on CANH/CANL lines, complementing integrated transceiver ESD structures. Use Value: 95 V clamping voltage stays below CAN FD common-mode tolerance (±36 V typical), preventing latch-up while absorbing >200 W surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58A-E3/5A | DO-214AC (SMA) package; 1.9 mm height vs. SMF's 1.08 mm; 100 A IPPM; 93.6 V VC | Higher profile limits use in ultra-thin consumer devices; same VRWM and clamping performance | Select SMAJ58A-E3/5A only if board space allows taller package and legacy SMA footprint is preferred. |
| TPSMD58A | DO-214AB (SMC) package; 2.62 mm height; 100 A IPPM; 93.6 V VC; higher RthJA (125 K/W) | Greater thermal mass improves single-pulse energy handling but increases board footprint by ~3× | Choose TPSMD58A for high-energy surge environments where thermal derating dominates over size constraints. |
Compared with SMAJ58A-E3/5A and TPSMD58A, SMF58A-HM3-18 delivers identical 58 V standoff and ±30 kV ESD rating in a 45% lower profile package - making it optimal for space-constrained USB/HDMI interfaces where low capacitance and minimal board real estate are critical.
Availability
SMF58A-HM3-18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial HMI touch panels, and consumer USB 3.0/2.0 peripheral designs requiring stable component supply across multi-year production cycles.
Supply support for SMF58A-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 high-speed digital interface protection - engineered for minimal capacitance, sub-ns response, and AEC-Q101 compliance to meet stringent ESD requirements in next-generation automotive and consumer electronics.
FAQ
What is the maximum clamping voltage of the SMF58A-HM3-18 under a 95 A surge?
The SMF58A-HM3-18 has a maximum clamping voltage (VC) of 95 V when subjected to its rated 95 A peak pulse current (10/1000 μs waveform). This value is guaranteed per Vishay's datasheet Rev. 2.4 and ensures downstream 5 V or 3.3 V logic remains within safe operating limits during transient events. The SMF58A-HM3-18 achieves this with low incremental surge resistance and fast avalanche response.
Is SMF58A-HM3-18 qualified to AEC-Q101?
Yes, SMF58A-HM3-18 is AEC-Q101 qualified - confirmed in Vishay's official documentation (Document Number: 85881, Rev. 2.4). This qualification covers stress tests including temperature cycling, high-temperature operating life, and ESD robustness, validating its suitability for automotive applications such as infotainment, ADAS sensors, and body electronics where reliability under harsh conditions is mandatory. The SMF58A-HM3-18 meets human body model Class H3B (>8 kV).
What is the capacitance of SMF58A-HM3-18 at 0 V reverse bias?
The SMF58A-HM3-18 exhibits a typical capacitance (CD) of 144 pF at VR = 0 V and f = 1 MHz, as specified in the Electrical Characteristics table. This value is measured under standardized AC conditions and remains stable across operating temperature. For high-speed interfaces like USB 2.0, this capacitance ensures minimal signal distortion while maintaining effective ESD suppression - a key design advantage of the SMF58A-HM3-18 over higher-capacitance alternatives.
Does SMF58A-HM3-18 support reflow soldering?
Yes, SMF58A-HM3-18 is fully compatible with lead-free reflow soldering processes, rated for peak temperatures up to 260 °C per J-STD-020. Its DO-219AB (SMF) package uses UL 94 V-0 epoxy molding compound and is classified MSL Level 1 - meaning it can be stored indefinitely at ambient conditions without baking prior to assembly. This makes the SMF58A-HM3-18 ideal for high-volume automated PCB manufacturing without moisture sensitivity concerns.
What is the standoff voltage rating of SMF58A-HM3-18?
The SMF58A-HM3-18 has a maximum working standoff voltage (VRWM) of 58 V, defined as the highest DC or continuous reverse voltage that can be applied without exceeding 0.1 μA leakage current. This rating ensures reliable blocking during normal operation while allowing rapid avalanche conduction during ESD events. The 58 V VRWM aligns with industrial and automotive I/O voltage margins - a core specification distinguishing the SMF58A-HM3-18 within the SMF family.
SMF58A-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):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 95V
- Current - Peak Pulse (10/1000µs):
- 2.1A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 144pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF58A-HM3-18 FAQ
1.How can I place an order for SMF58A-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF58A-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 SMF58A-HM3-18 reliable?
The price and inventory of SMF58A-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 SMF58A-HM3-18 is usually 5 days.
3.What payment methods are accepted for SMF58A-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF58A-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF58A-HM3-18?
SMF58A-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF58A-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 SMF58A-HM3-18?
For technical support, including SMF58A-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF58A-HM3-18 requirements.
6.How does Aetrix verify that SMF58A-HM3-18 is sourced from the original manufacturer or authorized distributors?
All SMF58A-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 SMF58A-HM3-18 meets industry standards.
7.What is the process for return or replacement of SMF58A-HM3-18?
All SMF58A-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF58A-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 SMF58A-HM3-18 part is unused and in its original packaging.
Return procedure for SMF58A-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF58A-HM3-18 Tags
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