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Vishay SMF54A-HM3_A08
- Part No.:
- SMF54A-HM3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF54A-HM3_A08.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,886
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Product details
Overview
SMF54A-HM3_A08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for high-speed data lines and power rails requiring ±30 kV IEC 61000-4-2 ESD immunity, 54 V standoff voltage, 88 A peak pulse current (10/1000 μs), and 148 pF typical capacitance at 1 MHz. It serves as a primary clamping device in USB 2.0, HDMI, and automotive infotainment interfaces.
For engineers reviewing the SMF54A-HM3_A08 datasheet, SMF54A-HM3_A08 pinout, SMF54A-HM3_A08 application, or SMF54A-HM3_A08 equivalent, this page delivers verified electrical specs, package dimensions, real-world clamping behavior, AEC-Q101 qualification status, and direct alternatives for ESD-hardened board-level design.
Technical Context
This diode operates as a transient voltage suppression (TVS) device with unidirectional polarity, leveraging silicon avalanche breakdown to clamp overvoltage transients. Its low incremental surge resistance ensures rapid response (<1 ns) and tight clamping at 88 V maximum reverse voltage under 2.25 A IPPM, meeting IEC 61000-4-2 and AEC-Q101 Class H3B requirements.
The SMF54A-HM3_A08 integrates "Low Noise" technology optimized for signal integrity in high-frequency interfaces. Its DO-219AB package supports wave and reflow soldering, with MSL level 1 rating and 180 K/W junction-to-ambient thermal resistance on standard epoxy-glass PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 48 V DC power rails. |
| Breakdown Voltage (VBR) | 60–66 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above system nominal voltage. |
| Clamping Voltage (VC) | 88 V max at IPPM = 2.25 A (10/1000 μs) - Limits downstream IC stress during ESD events; critical for protecting 75 V-rated receivers. |
| Peak Pulse Power | 200 W (10/1000 μs) - Sustains short-duration surges without degradation; validated per IEC 61000-4-5 waveform. |
| Capacitance | 148 pF at VR = 0 V, f = 1 MHz - Measured signal-line loading; suitable for ≤100 Mbps interfaces but not USB 3.0 or PCIe Gen2. |
| ESD Immunity | ±30 kV contact/air discharge (IEC 61000-4-2) - Exceeds industrial and automotive ESD test requirements. |
| AEC-Q101 Qualified | Yes - Validated for automotive under-hood and infotainment applications per stress test conditions. |
Pinout & Package
SMF54A-HM3_A08 uses the DO-219AB (SMF) package: 3.9 mm × 1.9 mm × 1.08 mm, low-profile, cathode-bar marked, SOD-123W-compatible outline. Mold compound rated UL 94 V-0; MSL level 1; peak reflow temperature 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side | Connected to protected signal or power line; conducts during forward surge or bidirectional variants (not applicable here). |
| Cathode | Ground reference | Connected to system ground plane; provides low-impedance path for ESD current; marked by bar on top surface. |
Key Features
| Feature | Design Value |
|---|---|
| 200 W peak pulse power (10/1000 μs) | Enables robust protection against repetitive ESD and lightning-induced surges in industrial control I/O modules. |
| ±30 kV IEC 61000-4-2 ESD immunity | Meets highest-tier system-level ESD compliance without external shielding or layout reinforcement. |
| AEC-Q101 qualified | Validates reliability for automotive applications including CAN FD gateways and ADAS sensor interfaces. |
| 148 pF capacitance at 1 MHz | Minimizes signal distortion on USB 2.0 and RS-485 links while maintaining effective clamping. |
| DO-219AB low-profile package | Reduces board space and height constraints in slim consumer electronics and telematics modules. |
Applications
| USB 2.0 Data Lines | HDMI Source Ports |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 host controllers against ESD events during cable insertion. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between data line and chassis ground, clamping transients within 1 ns. Use Value: Prevents latch-up or permanent damage to USB PHY ICs by limiting voltage to ≤88 V during ±30 kV contact discharge. | Use Scenario: Safeguarding HDMI TMDS channels in set-top boxes and AV receivers exposed to user-handling ESD. IC Role / Device Role / Timing Role: Signal-line protector with 148 pF capacitance ensuring <1% signal attenuation at 480 MHz pixel clock. Use Value: Maintains HDMI 1.4 compliance while enabling direct connection to unshielded front-panel connectors. |
| Automotive Infotainment | Industrial RS-485 Nodes |
Use Scenario: ESD hardening of touch-screen controller I²C lines in vehicle head units operating across -40 °C to +125 °C. IC Role / Device Role / Timing Role: AEC-Q101-qualified unidirectional TVS providing clamping at 88 V with 175 °C max junction temperature. Use Value: Eliminates field failures due to ESD-induced reset or communication loss in ISO 10605-compliant systems. | Use Scenario: Transient suppression on RS-485 differential pairs in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Low-capacitance (148 pF), high-power (200 W) protector preserving signal edge integrity over 1200 m cable runs. Use Value: Enables >25 kV ESD robustness without compromising rise time or common-mode noise rejection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ54A-E3/5A | DO-214AC (SMA) package; 1.5 mm taller; 200 W rating same; 150 pF capacitance. | Less suitable for ultra-thin designs; higher thermal resistance (220 K/W) limits power dissipation density. | Choose when legacy SMA footprint exists and board height is unconstrained. |
| TPD4E05U06DQAR | Quad-channel, 0.5 pF/channel, 5.5 V VRWM; integrated ESD array; QFN-10 package. | Designed for high-speed digital buses (USB 3.1, MIPI); not rated for 54 V standoff or AEC-Q101. | Prefer for multi-line, low-capacitance protection where voltage rating and automotive qualification are secondary. |
Compared with SMAJ54A-E3/5A and TPD4E05U06DQAR, the SMF54A-HM3_A08 uniquely balances 54 V standoff, AEC-Q101 qualification, low profile, and proven 200 W surge handling-making it optimal for space-constrained automotive and industrial interfaces where voltage margin and reliability are non-negotiable.
Availability
SMF54A-HM3_A08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial RS-485 networks, and consumer USB 2.0 peripherals requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant ESD protection.
Supply support for SMF54A-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 board-level ESD protection in space-sensitive applications, with design emphasis on low capacitance, high surge power, and automotive-grade qualification-enabling robust interface hardening without sacrificing signal fidelity.
FAQ
What is the standoff voltage rating of the SMF54A-HM3_A08?
The SMF54A-HM3_A08 has a maximum standoff voltage (VRWM) of 54 V, meaning it remains non-conductive up to this reverse voltage under normal operation. This rating ensures compatibility with 48 V power distribution systems and high-voltage data interfaces while maintaining sufficient margin before clamping initiates at 60 V minimum breakdown.
Is SMF54A-HM3_A08 qualified to AEC-Q101 standards?
Yes, the SMF54A-HM3_A08 is AEC-Q101 qualified, having passed stress tests including high-temperature operating life, temperature cycling, and ESD human body model (H3B >8 kV). This qualification confirms its suitability for automotive applications such as infotainment, body control modules, and ADAS sensor interfaces where reliability under thermal and electrical stress is mandatory.
What is the clamping voltage of SMF54A-HM3_A08 under a 2.25 A transient?
The SMF54A-HM3_A08 exhibits a maximum clamping voltage (VC) of 88 V when subjected to a 2.25 A peak pulse current with a 10/1000 μs waveform. This value represents the upper limit of voltage seen by downstream circuitry during an ESD event, directly informing system-level protection margin calculations for connected ICs rated up to 75 V absolute maximum.
Does SMF54A-HM3_A08 support reflow soldering?
Yes, the SMF54A-HM3_A08 is fully compatible with standard lead-free reflow soldering processes, with a peak temperature rating of 260 °C per J-STD-020. Its DO-219AB package is qualified for both wave and reflow assembly, and its MSL level 1 classification means it can be stored indefinitely at ambient conditions without baking prior to assembly.
What is the typical capacitance of SMF54A-HM3_A08 at 1 MHz?
The SMF54A-HM3_A08 has a typical capacitance of 148 pF measured at 0 V reverse bias and 1 MHz frequency. This value reflects signal-line loading under DC-biased conditions and is critical for evaluating bandwidth impact on interfaces like USB 2.0 or RS-485; it is not representative of dynamic capacitance during fast transients.
SMF54A-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):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 88V
- Current - Peak Pulse (10/1000µs):
- 2.25A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 148pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF54A-HM3_A08 FAQ
1.How can I place an order for SMF54A-HM3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF54A-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 SMF54A-HM3_A08 reliable?
The price and inventory of SMF54A-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 SMF54A-HM3_A08 is usually 5 days.
3.What payment methods are accepted for SMF54A-HM3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF54A-HM3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF54A-HM3_A08?
SMF54A-HM3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF54A-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 SMF54A-HM3_A08?
For technical support, including SMF54A-HM3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF54A-HM3_A08 requirements.
6.How does Aetrix verify that SMF54A-HM3_A08 is sourced from the original manufacturer or authorized distributors?
All SMF54A-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 SMF54A-HM3_A08 meets industry standards.
7.What is the process for return or replacement of SMF54A-HM3_A08?
All SMF54A-HM3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF54A-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 SMF54A-HM3_A08 part is unused and in its original packaging.
Return procedure for SMF54A-HM3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF54A-HM3_A08 Tags
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