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Vishay SMF58A-HE3_A08
- Part No.:
- SMF58A-HE3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF58A-HE3_A08.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,212
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Product details
Overview
SMF58A-HE3_A08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for high-energy transient suppression in 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 - optimized for automotive infotainment and industrial communication interfaces.
For engineers reviewing the SMF58A-HE3_A08 datasheet, SMF58A-HE3_A08 pinout, SMF58A-HE3_A08 application, or SMF58A-HE3_A08 equivalent, this page delivers verified electrical specs, package dimensions, real-world use cases, and validated alternative parts - all aligned with Vishay's Rev. 2.4 (04-Jul-2023) specification for AEC-Q101-qualified ESD protection devices.
Technical Context
This device operates as a single-channel unidirectional TVS diode, leveraging silicon avalanche breakdown to clamp transients above its 64.4–70.8 V reverse breakdown voltage (VBR). Its low 0.1 μA maximum reverse leakage at VRWM ensures minimal standby power loss in always-on circuits.
The SMF58A-HE3_A08 integrates "Low Noise" fast-response technology with sub-nanosecond turn-on time, enabling effective suppression of ESD events per IEC 61000-4-2 while maintaining signal integrity on high-speed lines up to ~100 Mbps - confirmed by its 144 pF junction capacitance and 180 K/W thermal resistance on standard PCB pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 58 V - defines maximum continuous operating voltage before clamping begins; suitable for 48 V nominal industrial bus systems. |
| Clamping Voltage (VC) | 95 V max at IPPM = 95 A - limits downstream voltage stress during surge; critical for protecting 75 V-rated interface ICs. |
| Peak Pulse Current (IPPM) | 95 A at 10/1000 μs waveform - supports robust surge handling per IEC 61000-4-5 Level 4 (2 kV line-to-ground). |
| ESD Immunity | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds automotive EMC requirements for USB, CAN, and LIN ports. |
| Junction Capacitance | 144 pF at VR = 0 V, f = 1 MHz - low enough for RS-485 and CAN FD (≤5 Mbps) without signal distortion. |
| Operating Temp Range | −65 °C to +175 °C - enables deployment in under-hood automotive and industrial control environments. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HBM >8 kV and temperature cycling. |
Pinout & Package
The SMF58A-HE3_A08 uses the DO-219AB (SMF) package: low-profile (1.08 mm height), SOD-123W-compatible outline, molded in UL 94 V-0 compound, MSL level 1, with cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path | Connected to ground or low-impedance reference; completes clamping loop during overvoltage events. |
| Cathode | Protected line connection | Connected to I/O line (e.g., CAN_H); blocks normal operation voltage but conducts during surges above VRWM. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W Peak Pulse Power (10/1000 μs) | Enables reliable protection against repetitive lightning-induced surges in industrial Ethernet ports without thermal runaway. |
| Low Incremental Surge Resistance | Minimizes voltage overshoot during fast transients - critical for safeguarding sensitive 3.3 V or 5 V logic-level receivers. |
| "Low Noise" Fast Response | Sub-ns turn-on time preserves signal edge integrity on high-speed serial buses like USB 2.0 and RS-422. |
| Solderable per J-STD-020 | Compatible with standard reflow profiles (peak ≤260 °C), supporting automated assembly in high-volume automotive production. |
| AEC-Q101 Qualified | Validated for automotive applications including engine control modules, ADAS sensor interfaces, and body electronics. |
Applications
| Automotive CAN Bus Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Installed on CAN_H/CAN_L lines of an automotive gateway module exposed to load dump and ESD events during service. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor that clamps surges above 58 V while remaining invisible to 2.5–5 V differential signaling. Use Value: Prevents latch-up or damage to CAN transceivers (e.g., TJA1042) during ±30 kV ESD contact discharge and ISO 7637-2 pulse 1/2b events. | Use Scenario: Placed across differential pair of an RS-485 transceiver in a factory automation PLC I/O module. IC Role / Device Role / Timing Role: Standoff-clamp protector that maintains signal fidelity up to 10 Mbps while suppressing 4 kV EFT bursts. Use Value: Limits clamped voltage to ≤95 V, ensuring safe operation of MAX13487E-level transceivers rated for 60 V absolute maximum. |
| 48 V DC Power Rail Protection | USB 2.0 Data Line Protection |
Use Scenario: Mounted on 48 V battery-fed power input of an electric vehicle charging station control board. IC Role / Device Role / Timing Role: Primary overvoltage clamp for load-dump transients (ISO 16750-2) and alternator switching spikes. Use Value: Withstands 95 A pulses and dissipates 200 W peak power, preventing MOSFET gate driver failure during 12 V/48 V system transitions. | Use Scenario: Integrated on D+ and D− lines of a USB 2.0 host port in a medical diagnostic device. IC Role / Device Role / Timing Role: Low-capacitance ESD shunt that activates within nanoseconds of ±30 kV contact discharge. Use Value: 144 pF capacitance avoids signal rise-time degradation, preserving full-speed (480 Mbps) USB timing margins and eye diagram integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58A-E3/57T | DO-214AC (SMA) package; 1.9 mm height vs. SMF's 1.08 mm; 100 A IPPM; 93.6 V VC; 150 pF capacitance. | Higher profile limits use in ultra-thin automotive modules; slightly lower clamping but higher capacitance affects >100 Mbps signals. | Prefer when board space allows taller components and higher surge margin is prioritized over capacitance. |
| TPSMD58A | DO-214AB (SMC) package; 2.62 mm height; 100 A IPPM; 93.6 V VC; 160 pF; AEC-Q101 qualified. | Larger footprint and thermal mass suit high-power industrial drives but not compact infotainment PCBs. | Select for applications needing higher thermal dissipation in ambient >105 °C, such as motor control inverters. |
Compared with SMAJ58A-E3/57T and TPSMD58A, the SMF58A-HE3_A08 offers the lowest profile and best capacitance-to-surge ratio - making it optimal for space-constrained, high-speed automotive and industrial interfaces where board thickness and signal integrity are critical.
Availability
SMF58A-HE3_A08 is available at Aetrix Electronics and suitable for automotive CAN bus protection, industrial RS-485 interfaces, 48 V DC power rail protection, and USB 2.0 data line protection requiring stable component supply and AEC-Q101 compliance.
Supply support for SMF58A-HE3_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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with leadership in reliability-tested protection devices for harsh environments.
The SMF series belongs to Vishay's eSMP® family of surface-mount TVS diodes, engineered specifically for high-reliability ESD and surge protection in automotive, industrial, and communications systems where low profile and AEC-Q101 validation are mandatory.
FAQ
What is the reverse standoff voltage rating of the SMF58A-HE3_A08?
The SMF58A-HE3_A08 has a maximum reverse standoff voltage (VRWM) of 58 V, meaning it remains non-conductive below this voltage during normal operation. This value is critical for matching the protected circuit's operating voltage - for example, it aligns with 48 V nominal industrial buses or automotive subsystems where transient headroom must exceed steady-state levels. The SMF58A-HE3_A08 maintains <0.1 μA leakage at this voltage, minimizing power loss.
Is the SMF58A-HE3_A08 AEC-Q101 qualified?
Yes, the SMF58A-HE3_A08 is AEC-Q101 qualified, having passed stress tests including human body model ESD >8 kV, temperature cycling, and high-temperature operating life. This qualification confirms its suitability for automotive applications such as body control modules, infotainment interfaces, and ADAS sensor connections. The SMF58A-HE3_A08 meets the full AEC-Q101 standard as documented in Vishay's Rev. 2.4 datasheet dated 04-Jul-2023.
What is the clamping voltage of the SMF58A-HE3_A08 at its rated peak pulse current?
The SMF58A-HE3_A08 exhibits a maximum clamping voltage (VC) of 95 V at its rated peak pulse current (IPPM) of 95 A under the 10/1000 μs waveform. This clamping performance ensures downstream components - such as CAN transceivers or RS-485 drivers rated for ≤100 V absolute maximum - remain within safe operating limits during surge events. The low incremental resistance of the SMF58A-HE3_A08 contributes directly to this tightly controlled VC.
Does the SMF58A-HE3_A08 support reflow soldering?
Yes, the SMF58A-HE3_A08 is fully compatible with standard lead-free reflow soldering processes, rated for peak temperatures up to 260 °C per J-STD-020. Its DO-219AB (SMF) package is wave and reflow solderable, with MSL level 1 handling - meaning floor life is unlimited when stored properly. This makes the SMF58A-HE3_A08 suitable for high-throughput SMT lines used in automotive electronics manufacturing.
What is the typical junction capacitance of the SMF58A-HE3_A08 and how does it affect high-speed signal lines?
The SMF58A-HE3_A08 has a typical junction capacitance of 144 pF at 0 V and 1 MHz. While higher than some ultra-low-capacitance TVS devices, this value is well-suited for protocols up to 10 Mbps (e.g., RS-485, CAN FD) and full-speed USB 2.0, where signal integrity remains intact. For higher-speed interfaces (>50 Mbps), designers should verify eye diagram margins - the SMF58A-HE3_A08's capacitance is a deliberate trade-off for its 95 A surge capability and low-profile form factor.
SMF58A-HE3_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):
- 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-HE3_A08 FAQ
1.How can I place an order for SMF58A-HE3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF58A-HE3_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 SMF58A-HE3_A08 reliable?
The price and inventory of SMF58A-HE3_A08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF58A-HE3_A08 is usually 5 days.
3.What payment methods are accepted for SMF58A-HE3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF58A-HE3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF58A-HE3_A08?
SMF58A-HE3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF58A-HE3_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 SMF58A-HE3_A08?
For technical support, including SMF58A-HE3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF58A-HE3_A08 requirements.
6.How does Aetrix verify that SMF58A-HE3_A08 is sourced from the original manufacturer or authorized distributors?
All SMF58A-HE3_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 SMF58A-HE3_A08 meets industry standards.
7.What is the process for return or replacement of SMF58A-HE3_A08?
All SMF58A-HE3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF58A-HE3_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 SMF58A-HE3_A08 part is unused and in its original packaging.
Return procedure for SMF58A-HE3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF58A-HE3_A08 Tags
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