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Vishay SMF58A-HM3_A18
- Part No.:
- SMF58A-HM3_A18
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF58A-HM3_A18.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,008
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Product details
Overview
SMF58A-HM3_A18 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 and power rails. It features a 58 V stand-off voltage (VRWM), 95 A peak pulse current (IPPM) at 10/1000 μs, 95 V maximum clamping voltage (VC), ±30 kV IEC 61000-4-2 ESD immunity, and 144 pF typical capacitance at 1 MHz - making it suitable for automotive infotainment interfaces and industrial sensor signal conditioning.
For engineers reviewing the SMF58A-HM3_A18 datasheet, SMF58A-HM3_A18 pinout, SMF58A-HM3_A18 application, or SMF58A-HM3_A18 equivalent, this page delivers verified electrical parameters, package dimensions, AEC-Q101 qualification status, clamping performance under surge conditions, and real-world use context for board-level ESD hardening in harsh environments.
Technical Context
This device operates as a single-channel unidirectional TVS diode with avalanche breakdown behavior, optimized for fast response (<1 ns) to electrostatic discharge events. Its low incremental surge resistance ensures minimal voltage overshoot during 8/20 μs and 10/1000 μs transients, while its DO-219AB footprint supports high-density PCB layouts.
The SMF58A-HM3_A18 is rated for continuous operation from −65 °C to +175 °C, qualified per AEC-Q101, and compatible with wave and reflow soldering (peak 260 °C). Its 144 pF junction capacitance enables use in moderate-speed digital lines (e.g., CAN FD, LIN, RS-485) without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 58 V - maximum continuous reverse voltage before conduction begins; defines safe operating margin for 48 V automotive power rails. |
| Clamping Voltage (VC) | 95 V max at IPPM = 95 A - limits downstream IC voltage stress during 10/1000 μs surges; critical for protecting 75 V-rated transceivers. |
| Peak Pulse Current (IPPM) | 95 A at 10/1000 μs - quantifies surge-handling capacity for lightning-induced or inductive-switching transients in industrial control modules. |
| ESD Immunity | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds Level 4 requirements for automotive cockpit touch interfaces and USB-C ports. |
| Junction Capacitance (CD) | 144 pF at VR = 0 V, f = 1 MHz - balances ESD robustness and signal fidelity for sub-100 Mbps serial buses like SENT or LIN. |
| Operating Temperature | −65 °C to +175 °C - supports under-hood automotive placement and extended thermal cycling in motor drive enclosures. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HTGB, HTRB, and temperature cycling per AEC-Q101 Rev D. |
Pinout & Package
SMF58A-HM3_A18 uses 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 cathode-indicated by a bar marking on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected signal or power line; conducts during positive transients when cathode is biased higher. |
| Cathode | Ground/Reference side | Connected to system ground or low-impedance return path; defines unidirectional clamping direction and ESD current sink path. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables reliable suppression of repetitive low-energy transients in battery management systems without thermal runaway. |
| "Low Noise" fast-response technology | Sub-nanosecond turn-on time minimizes voltage overshoot during ESD strikes, preserving timing margins in high-speed analog front-ends. |
| AEC-Q101 qualification | Validates long-term reliability under automotive thermal shock, humidity bias, and mechanical vibration stress profiles. |
| SOD-123W/SOD-123F/SOD-123FL compatibility | Allows drop-in replacement or layout reuse across Vishay's SMF, SMA, and SOD-123 families without footprint redesign. |
| 144 pF capacitance at 1 MHz | Supports clean signal integrity on 12 V–48 V sensor supply lines and medium-speed communication links up to ~50 Mbps. |
Applications
| Automotive Infotainment Display Interface | Industrial CAN FD Bus Node |
|---|---|
Use Scenario: Protecting HDMI or LVDS video signal lines between head unit and TFT display in vehicles exposed to ESD during user interaction. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed at connector entry point to shunt ESD energy away from display driver ICs and serializer/deserializer chips. Use Value: Maintains 95 V clamping limit under ±30 kV contact discharge, preventing latch-up or gate oxide damage in 1.8 V/3.3 V display interface ICs. |
Use Scenario: Safeguarding CAN FD transceiver pins (TXD/RXD/CANH/CANL) in engine control units subjected to load dump and ESD in manufacturing/test environments. IC Role / Device Role / Timing Role: Bidirectional protection achieved via dual-diode configuration (two SMF58A-HM3_A18 devices); suppresses common-mode transients on differential bus lines. Use Value: 144 pF capacitance avoids signal rise-time degradation on 5 Mbps CAN FD links while sustaining 95 A surge current capability. |
| 48 V Mild Hybrid Power Distribution | Smart Sensor Signal Conditioning |
Use Scenario: Transient suppression on 48 V auxiliary power rail feeding ADAS camera modules and radar processors in mild hybrid architectures. IC Role / Device Role / Timing Role: Standoff-rated TVS diode placed upstream of DC/DC converters to clamp load-dump spikes and alternator ripple surges. Use Value: 58 V VRWM provides 20 % margin above nominal 48 V rail, while 95 V VC ensures downstream 75 V-rated regulators remain within safe operating area. |
Use Scenario: Protecting analog output pins of pressure or temperature sensors in factory automation PLC I/O modules exposed to field wiring ESD. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on 0–5 V or 0–10 V analog outputs to prevent overvoltage damage to ADC inputs. Use Value: 144 pF capacitance introduces negligible phase shift in DC-coupled sensor signals, and ±30 kV ESD rating meets IEC 61000-4-2 compliance for industrial zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SP1003-058K | Same 58 V VRWM and 95 V VC, but 100 pF capacitance; AEC-Q101 qualified; slightly lower IPPM (90 A). | Better suited for higher-speed CAN FD or FlexRay where <100 pF is preferred; identical thermal profile and footprint. | Select SP1003-058K if lower capacitance is required for >5 Mbps signaling; verify layout clearance for alternate cathode marking. |
| ON Semiconductor SZ1.5SMC58A | Higher 1.5 kW peak power (8/20 μs), larger DO-214AB package (4.5 × 3.5 mm), 105 V VC, 150 pF capacitance; not AEC-Q101 qualified. | Targets higher-energy surges (e.g., ISO 7637-2 Pulse 5a) but incompatible with space-constrained automotive modules. | Choose SZ1.5SMC58A only for non-automotive industrial power-line protection where board space allows larger footprint and AEC-Q101 is not mandated. |
Compared with SP1003-058K and SZ1.5SMC58A, SMF58A-HM3_A18 offers optimal balance of automotive qualification, compact DO-219AB size, and 144 pF capacitance - making it the preferred choice for ESD-hardened 48 V domain controllers and infotainment signal routing where layout density and qualification rigor are both critical.
Availability
SMF58A-HM3_A18 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial CAN FD networks, and 48 V mild hybrid power distribution requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMF58A-HM3_A18 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 board-level ESD protection in space-constrained, thermally demanding applications - engineered specifically for AEC-Q101 compliance, low-profile mounting, and consistent clamping performance across temperature extremes.
FAQ
What is the exact package type and dimensions of SMF58A-HM3_A18?
SMF58A-HM3_A18 uses the DO-219AB (SMF) package: 3.9 mm length × 1.9 mm width × 1.08 mm height, with cathode indicated by a bar marking. Its footprint matches SOD-123W, SOD-123F, and SOD-123FL outlines, enabling layout reuse across Vishay's surface-mount TVS families. The device is MSL level 1 and rated for peak reflow temperatures up to 260 °C.
Is SMF58A-HM3_A18 qualified to AEC-Q101, and what tests does that include?
Yes, SMF58A-HM3_A18 is AEC-Q101 qualified. This includes stress testing per Rev D: high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), temperature cycling, unbiased highly accelerated stress test (uHAST), and mechanical shock. Qualification confirms suitability for automotive under-hood and cabin applications where reliability over 15+ years is mandatory.
What is the clamping voltage of SMF58A-HM3_A18 at its rated peak pulse current?
The maximum clamping voltage (VC) of SMF58A-HM3_A18 is 95 V at IPPM = 95 A with a 10/1000 μs waveform. This value is measured under standardized surge conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transients - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Can SMF58A-HM3_A18 be used for bidirectional protection, and if so, how?
SMF58A-HM3_A18 is unidirectional, but bidirectional protection can be implemented using two devices in series opposition (anode-to-anode or cathode-to-cathode). For example, placing two SMF58A-HM3_A18 diodes anode-to-anode on a differential pair provides symmetrical clamping for both polarities - commonly applied on CAN FD or RS-485 lines where ±30 kV ESD immunity is required on both conductors.
How does the 144 pF capacitance of SMF58A-HM3_A18 affect signal integrity in high-speed applications?
The 144 pF typical junction capacitance of SMF58A-HM3_A18 is measured at 0 V bias and 1 MHz; it decreases significantly at operating reverse bias (e.g., ~30 pF at 40 V VR). This enables use on moderate-speed digital lines (up to ~50 Mbps) like SENT, LIN, or 125 kbps CAN without measurable rise-time degradation, while maintaining robust ESD immunity - unlike lower-capacitance alternatives that sacrifice surge current rating.
SMF58A-HM3_A18 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):
- 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 (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF58A-HM3_A18 FAQ
1.How can I place an order for SMF58A-HM3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF58A-HM3_A18 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_A18 reliable?
The price and inventory of SMF58A-HM3_A18 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_A18 is usually 5 days.
3.What payment methods are accepted for SMF58A-HM3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF58A-HM3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF58A-HM3_A18?
SMF58A-HM3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF58A-HM3_A18 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_A18?
For technical support, including SMF58A-HM3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF58A-HM3_A18 requirements.
6.How does Aetrix verify that SMF58A-HM3_A18 is sourced from the original manufacturer or authorized distributors?
All SMF58A-HM3_A18 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_A18 meets industry standards.
7.What is the process for return or replacement of SMF58A-HM3_A18?
All SMF58A-HM3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SMF58A-HM3_A18, 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_A18 part is unused and in its original packaging.
Return procedure for SMF58A-HM3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF58A-HM3_A18 Tags
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