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Vishay SMF58A-HM3_A08
- Part No.:
- SMF58A-HM3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF58A-HM3_A08.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,946
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Product details
Overview
SMF58A-HM3_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 0 V - ideal for protecting USB 2.0, HDMI, and automotive sensor interfaces.
For engineers reviewing the SMF58A-HM3_A08 datasheet, SMF58A-HM3_A08 pinout, SMF58A-HM3_A08 application, or SMF58A-HM3_A08 equivalent, key selection criteria include clamping performance under 50 A surge, low capacitance for signal integrity, AEC-Q101 qualification for automotive use, SOD-123W-compatible footprint, and thermal resistance of 180 K/W on standard PCB pads.
Technical Context
This device operates as a single-channel, unidirectional TVS diode with avalanche breakdown behavior. Its junction temperature range spans −65 °C to +175 °C, and it sustains 1000 W peak pulse power per IEC 61000-4-5 (8/20 μs), while delivering 200 W at the longer 10/1000 μs waveform used for system-level surge testing.
The SMF58A-HM3_A08 uses "Low Noise" technology for sub-nanosecond response time and exhibits low incremental surge resistance to minimize voltage overshoot during fast transients. Its reverse leakage remains ≤0.1 μA at VRWM = 58 V, ensuring minimal standby power impact in always-on circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 58 V - defines maximum continuous operating voltage before clamping begins; ensures compatibility with 48 V industrial and 54 V automotive supply rails. |
| Clamping Voltage (VC) | 95 V max at IPPM = 95 A - limits downstream voltage stress during surge events; critical for safeguarding 75 V-rated interface ICs. |
| Peak Pulse Current (IPPM) | 95 A at 10/1000 μs - supports robust protection against lightning-induced surges and inductive switching transients. |
| Capacitance (CD) | 144 pF at 0 V, 1 MHz - low enough for <15 Mbps digital interfaces (e.g., CAN FD, RS-485) without signal distortion. |
| ESD Rating | ±30 kV contact / ±30 kV air per IEC 61000-4-2 - exceeds Level 4 immunity requirements for handheld and exposed connectors. |
| Thermal Resistance (RthJA) | 180 K/W on 3 mm × 3 mm Cu pads - enables reliable operation up to 175 °C junction temperature with moderate PCB copper area. |
| AEC-Q101 Qualified | Yes - validated for automotive applications including body electronics, infotainment, and ADAS sensor interfaces. |
Pinout & Package
SMF58A-HM3_A08 is housed in the DO-219AB (SMF) package - a low-profile, surface-mount case compatible with SOD-123W, SOD-123F, and SOD-123FL footprints. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm (L × W × H), with cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected signal or power line; conducts during reverse-biased surge events to shunt current to ground. |
| Cathode | Ground reference | Connected to system ground plane; establishes clamping threshold relative to GND and defines unidirectional conduction path. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables sustained protection against repetitive industrial surges without thermal runaway on standard FR-4 PCBs. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns), improving protection margin for sensitive receivers. |
| "Low Noise" fast-response technology | Sub-nanosecond turn-on ensures clamping activation before transient energy couples into downstream circuitry. |
| AEC-Q101 qualified | Validated for automotive underhood and cabin environments, including temperature cycling, humidity, and mechanical shock tests. |
| Solderable per J-STD-020 MSL level 1 | Allows unlimited floor life and reflow at peak 260 °C - compatible with standard lead-free assembly processes without baking. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver pins and analog sensor outputs (e.g., pressure, temperature) in engine control units and battery management systems. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between signal line and chassis ground, clamping ESD and load-dump spikes. Use Value: Maintains signal fidelity with 144 pF capacitance while surviving ±30 kV ESD and 95 A surge pulses - meeting ISO 10605 and ISO 7637-2 requirements. | Use Scenario: Safeguarding differential data lines in factory automation PLCs, motor drives, and process controllers exposed to long cable runs and relay switching noise. IC Role / Device Role / Timing Role: Line-side TVS diode on each RS-485 A/B terminal, referenced to local ground to clamp common-mode surges. Use Value: 95 V clamping voltage ensures receiver inputs remain below absolute maximum ratings during 1 kV/2 kV surge events per IEC 61000-4-5. |
| USB 2.0 Port Protection | HDMI DDC Channel |
Use Scenario: ESD protection for USB 2.0 data lines (D+/D−) on host ports, docking stations, and embedded peripherals. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional diode pair (one per line), grounded cathode configuration for low-capacitance clamping. Use Value: 144 pF capacitance avoids signal rise-time degradation at 480 Mbps, while ±30 kV ESD rating exceeds USB-IF compliance thresholds. | Use Scenario: Protecting HDMI Display Data Channel (DDC) lines (SCL/SDA) from hot-plug ESD and cable discharge events in AV receivers and monitors. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on each DDC line, placed adjacent to HDMI connector to minimize stub length. Use Value: Sub-150 pF capacitance preserves I²C timing margins at 100 kHz, and 58 V VRWM accommodates 5 V pull-up without leakage-induced logic errors. |
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 (Vishay) | DO-214AC (SMA) package; 1.9 mm height vs. SMF's 1.08 mm; 100 A IPPM; 93.6 V VC; 170 pF capacitance. | Higher profile limits use in ultra-thin devices; higher capacitance may affect >10 Mbps signals. | Choose SMAJ58A-E3/5A only when board space allows taller components and signal bandwidth is ≤5 Mbps. |
| TPD2E001DRYR (TI) | 0.65 mm × 0.65 mm DRY (X2SON) package; dual-channel; 12 V VRWM; 12 pF capacitance; ±8 kV ESD. | Not voltage-scaled for 48–58 V systems; intended for low-voltage data lines (USB, I²C), not power rail protection. | Use TPD2E001DRYR only for low-voltage, high-speed signal lines where VRWM ≤12 V and capacitance <15 pF is mandatory. |
Compared with SMAJ58A-E3/5A and TPD2E001DRYR, SMF58A-HM3_A08 uniquely balances 58 V standoff, 144 pF capacitance, and ultra-low profile (1.08 mm) for space-constrained 48 V+ interfaces requiring automotive-grade reliability.
Availability
SMF58A-HM3_A08 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and HDMI DDC channel protection requiring stable component supply across extended product lifecycles.
Supply support for SMF58A-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 power management, sensing, and protection devices with emphasis on reliability and AEC-Q qualification.
The SMF series targets high-reliability transient suppression in automotive, industrial, and communications equipment, engineered specifically for compact, high-power-density PCB layouts with stringent ESD and surge immunity requirements.
FAQ
What is the maximum clamping voltage of SMF58A-HM3_A08 at its rated peak pulse current?
The SMF58A-HM3_A08 has a maximum clamping voltage (VC) of 95 V when subjected to its rated 95 A peak pulse current (IPPM) under the 10/1000 μs waveform. This value is guaranteed across temperature and ensures protected ICs see no more than 95 V during surge events - critical for maintaining safety margins in 48 V and 54 V automotive systems where SMF58A-HM3_A08 is commonly deployed.
Is SMF58A-HM3_A08 qualified to AEC-Q101, and what does that mean for automotive use?
Yes, SMF58A-HM3_A08 is AEC-Q101 qualified, meaning it has passed accelerated stress tests including temperature cycling, humidity bias, high-temperature operating life, and mechanical shock - all required for automotive electronic components. This qualification confirms SMF58A-HM3_A08 is suitable for under-hood and cabin applications such as engine control modules and ADAS sensor interfaces where reliability under extreme conditions is mandatory.
What is the capacitance of SMF58A-HM3_A08, and how does it affect high-speed signal lines?
SMF58A-HM3_A08 has a typical capacitance of 144 pF at 0 V and 1 MHz. This value is low enough to avoid significant signal integrity degradation on interfaces up to 15 Mbps (e.g., RS-485, CAN FD), but not suitable for USB 3.0 or HDMI TMDS lanes (>1 Gbps). For SMF58A-HM3_A08, the 144 pF capacitance represents an optimal trade-off between surge handling capability and signal-line compatibility in medium-speed industrial and automotive data links.
Can SMF58A-HM3_A08 be used in place of SMF48A-HM3_A08 for higher-voltage protection?
No - SMF58A-HM3_A08 is not a drop-in replacement for SMF48A-HM3_A08 due to differing electrical parameters: SMF58A-HM3_A08 has a 58 V VRWM and 95 V VC, whereas SMF48A-HM3_A08 has 48 V VRWM and 77.4 V VC. Substituting SMF58A-HM3_A08 would raise the clamping threshold, potentially exposing downstream ICs to overvoltage. Always verify system voltage margins and transient profiles before selecting SMF58A-HM3_A08 in place of lower-voltage variants.
What is the recommended PCB footprint for SMF58A-HM3_A08, and is it compatible with automated assembly?
The recommended footprint for SMF58A-HM3_A08 follows the DO-219AB outline: 2.9 mm pad length, 1.3 mm pad width, 1.4 mm pad spacing, with 1.3 mm solder mask opening. It is fully compatible with wave and reflow soldering per J-STD-020 MSL level 1, supporting peak temperatures up to 260 °C. The SMF58A-HM3_A08 footprint matches SOD-123W, enabling reuse of existing stencil designs - a key advantage for high-volume manufacturing of SMF58A-HM3_A08-based boards.
SMF58A-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):
- 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_A08 FAQ
1.How can I place an order for SMF58A-HM3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF58A-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 SMF58A-HM3_A08 reliable?
The price and inventory of SMF58A-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 SMF58A-HM3_A08 is usually 5 days.
3.What payment methods are accepted for SMF58A-HM3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF58A-HM3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF58A-HM3_A08?
SMF58A-HM3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF58A-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 SMF58A-HM3_A08?
For technical support, including SMF58A-HM3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF58A-HM3_A08 requirements.
6.How does Aetrix verify that SMF58A-HM3_A08 is sourced from the original manufacturer or authorized distributors?
All SMF58A-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 SMF58A-HM3_A08 meets industry standards.
7.What is the process for return or replacement of SMF58A-HM3_A08?
All SMF58A-HM3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF58A-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 SMF58A-HM3_A08 part is unused and in its original packaging.
Return procedure for SMF58A-HM3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF58A-HM3_A08 Tags
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