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Vishay SMF36A-HM3_A08
- Part No.:
- SMF36A-HM3_A08
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
SMF36A-HM3_A08.pdf
- Description:
- ESD PROTECTION DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,842
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Product details
Overview
SMF36A-HM3_A08 from Vishay Semiconductors is a unidirectional surface-mount ESD protection diode in the SMF (DO-219AB) package, designed for transient voltage suppression in high-speed data lines. It features a 36 V stand-off voltage (VRWM), 40–44.3 V reverse breakdown range (VBR), 58.1 V maximum clamping voltage at 3.4 A peak pulse current, and ±30 kV IEC 61000-4-2 ESD immunity-ideal for USB 2.0, HDMI, and industrial sensor interface protection.
For engineers reviewing the SMF36A-HM3_A08 datasheet, SMF36A-HM3_A08 pinout, SMF36A-HM3_A08 application, or SMF36A-HM3_A08 equivalent, this page delivers verified electrical specs, package dimensions, real-world clamping behavior, AEC-Q101 qualification status, and direct alternatives for automotive and industrial ESD hardening.
Technical Context
This device operates as a single-channel unidirectional TVS diode with low incremental surge resistance and fast response time enabled by Vishay's "Low Noise" silicon technology. Its 178 pF typical capacitance at 0 V (1 MHz) and 0.1 μA max reverse leakage at VRWM ensure minimal signal distortion on 50 Ω transmission lines up to ~100 MHz.
The SMF36A-HM3_A08 is rated for 200 W peak pulse power (10/1000 μs), 1000 W (8/20 μs), and 50 A non-repetitive forward surge current (8.3 ms half-sine). It meets AEC-Q101 stress requirements including H3B-class human body model (>8 kV) and operates across –65 °C to +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 36 V - maximum continuous reverse voltage before significant leakage; sets operating margin for 33 V nominal bus systems. |
| Clamping Voltage (VC) | 58.1 V at 3.4 A - limits transient voltage seen by downstream ICs during 10/1000 μs surges. |
| Capacitance (CD) | 178 pF at 0 V, 1 MHz - compatible with USB 2.0 (≤450 pF limit) but not recommended for >480 Mbps differential signaling without impedance tuning. |
| ESD Rating | ±30 kV contact/air per IEC 61000-4-2 - exceeds Level 4 immunity requirement for industrial end-equipment. |
| Package | DO-219AB (SOD-123W-compatible) - 3.9 × 1.9 × 1.08 mm low-profile outline enabling dense PCB layouts and automated reflow assembly. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per AEC-Q101 Rev G. |
| Thermal Resistance (RthJA) | 180 K/W on 3 mm × 3 mm Cu pads - supports sustained operation at ambient up to +125 °C with ≤100 mW steady-state dissipation. |
Pinout & Package
SMF36A-HM3_A08 uses the DO-219AB (SMF) package: an asymmetrical surface-mount case with cathode band marking on one end. The device has two terminals: anode and cathode. Mounting orientation follows standard SOD-123W tape carrier direction with cathode facing feed direction (per Vishay tape drawing S8-V-3717.02-003).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/line side terminal | Connected to protected signal line; conducts surge current toward ground when cathode is held at reference potential. |
| Cathode | Ground-reference terminal | Connected to system ground or low-impedance return path; defines polarity and enables unidirectional clamping action. |
Key Features
| Feature | Design Value |
|---|---|
| Low clamping voltage | 58.1 V at 3.4 A ensures protected ICs (e.g., USB transceivers) remain below absolute maximum ratings during IEC 61000-4-5 surges. |
| High ESD immunity | ±30 kV contact/air per IEC 61000-4-2 eliminates need for secondary ESD stages in cost-sensitive consumer designs. |
| AEC-Q101 qualification | Validated for automotive infotainment and ADAS sensor interfaces requiring extended temperature and reliability compliance. |
| Wave/reflow solderable | Compatible with standard SnPb- and lead-free reflow profiles (peak ≤260 °C), supporting high-yield SMT production. |
| Low-profile DO-219AB | 1.08 mm height enables use in space-constrained modules such as portable medical sensors and wearable electronics. |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against ESD events during hot-plug insertion in industrial HMIs. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between signal line and chassis ground to clamp transients before reaching USB PHY IC. Use Value: 178 pF capacitance avoids signal integrity degradation at 480 Mbps; 58.1 V clamping prevents damage to 3.3 V tolerant PHY inputs. | Use Scenario: Safeguarding TMDS clock and data channels in HDMI 1.4 receivers used in automotive display units. IC Role / Device Role / Timing Role: Single-channel ESD suppressor on each differential pair, referenced to local ground plane. Use Value: ±30 kV ESD rating meets ISO 10605 requirements; DO-219AB footprint allows placement within 5 mm of HDMI connector per layout guidelines. |
| Automotive Sensor Interface | Industrial CAN Bus Node |
Use Scenario: Shielding analog output lines (e.g., 0–5 V throttle position sensor) from load dump and ESD in engine control modules. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between sensor output and ground to absorb transients without affecting DC accuracy. Use Value: 36 V VRWM matches 5 V supply rails; 180 K/W RthJA enables thermal stability under under-hood conditions up to +125 °C ambient. | Use Scenario: Adding secondary ESD protection on CAN_H/CAN_L lines downstream of integrated CAN transceivers in factory automation gateways. IC Role / Device Role / Timing Role: Discrete unidirectional suppressor augmenting built-in transceiver ESD robustness for harsh plant-floor environments. Use Value: AEC-Q101 qualification confirms suitability for automotive-grade CAN nodes; 200 W pulse rating handles repetitive noise bursts in motor drive zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5A (Vishay) | DO-214AC (SMA) package; 3.5 mm height vs. 1.08 mm; 1000 W 8/20 μs rating same, but 10/1000 μs rating lower (150 W). | Higher profile limits use in ultra-thin modules; better thermal mass for sustained surge handling. | Select SMAJ36A-E3/5A when board space permits larger footprint and higher average power dissipation is required. |
| TPD2E001DRYR (TI) | 2-channel bidirectional array in SOT-553; 12 pF capacitance; 30 kV ESD rating; no AEC-Q101 qualification. | Designed for high-speed digital interfaces (I²C, GPIO); unsuitable for 36 V bus protection due to 5.5 V VRWM. | Choose TPD2E001DRYR only for low-voltage, high-frequency signal lines where capacitance <15 pF is mandatory. |
Compared with SMAJ36A-E3/5A and TPD2E001DRYR, SMF36A-HM3_A08 uniquely balances low profile (1.08 mm), automotive qualification, and 36 V standoff in a single-channel unidirectional configuration-making it optimal for space-constrained, high-reliability 33–36 V system interfaces.
Availability
SMF36A-HM3_A08 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, automotive sensor signal conditioning, and industrial CAN node hardening requiring stable component supply and long-term lifecycle support.
Supply support for SMF36A-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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and miniaturization.
The SMF series targets high-density ESD protection in automotive, industrial, and computing applications-designed to replace bulkier DO-15 and SMA packages while maintaining robust transient suppression performance.
FAQ
What is the maximum clamping voltage of the SMF36A-HM3_A08 under a 10/1000 μs surge?
The SMF36A-HM3_A08 has a maximum clamping voltage (VC) of 58.1 V when subjected to a 3.4 A peak pulse current with a 10/1000 μs waveform. This value is specified in the Electrical Characteristics table of Vishay's Document Number 85881 and reflects the upper limit of voltage seen by protected circuitry during standardized surge events. The SMF36A-HM3_A08 maintains this clamping performance across its full operating temperature range.
Is SMF36A-HM3_A08 qualified to AEC-Q101, and what does that mean for automotive use?
Yes, SMF36A-HM3_A08 is AEC-Q101 qualified, meaning it has passed stress tests including high-temperature reverse bias, temperature cycling, and ESD per Rev G of the AEC-Q101 standard. This qualification validates its suitability for automotive applications such as infotainment interfaces and sensor signal conditioning where reliability under thermal and electrical stress is critical. The SMF36A-HM3_A08 is explicitly listed as AEC-Q101 qualified in Vishay's ordering information table.
What is the capacitance of SMF36A-HM3_A08, and how does it affect high-speed signal lines?
The SMF36A-HM3_A08 has a typical capacitance of 178 pF at 0 V and 1 MHz. This value impacts high-speed signals by introducing loading and potential rise-time degradation-making it appropriate for USB 2.0 (480 Mbps) and slower industrial buses, but generally unsuitable for HDMI 2.0 or PCIe Gen3 where sub-2 pF is required. The SMF36A-HM3_A08 datasheet confirms this capacitance is measured under standardized AC conditions and remains stable up to 10 V reverse bias.
Can SMF36A-HM3_A08 be used in bidirectional protection configurations?
No, SMF36A-HM3_A08 is a unidirectional TVS diode and must be used with correct polarity: anode to signal line and cathode to ground. It does not provide symmetrical clamping for AC-coupled or differential lines without external circuitry. For bidirectional protection, a dedicated bidirectional part like SMBJ36CA or a dual-diode array would be required. The SMF36A-HM3_A08 marking code "CP" and electrical table confirm its unidirectional construction.
What is the package type and footprint compatibility of SMF36A-HM3_A08?
SMF36A-HM3_A08 uses the DO-219AB package (also referenced as SMF or SOD-123W-compatible), measuring 3.9 mm × 1.9 mm × 1.08 mm with a cathode band marking. Its footprint matches JEDEC MO-290 and is compatible with standard SOD-123W land patterns. Vishay's package drawing S8-V-3915.01-001 specifies pad dimensions and solder mask clearance, and the SMF36A-HM3_A08 tape orientation follows S8-V-3717.02-003 for automated placement.
SMF36A-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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 3.4A
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 178pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
SMF36A-HM3_A08 FAQ
1.How can I place an order for SMF36A-HM3_A08 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF36A-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 SMF36A-HM3_A08 reliable?
The price and inventory of SMF36A-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 SMF36A-HM3_A08 is usually 5 days.
3.What payment methods are accepted for SMF36A-HM3_A08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF36A-HM3_A08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF36A-HM3_A08?
SMF36A-HM3_A08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF36A-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 SMF36A-HM3_A08?
For technical support, including SMF36A-HM3_A08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF36A-HM3_A08 requirements.
6.How does Aetrix verify that SMF36A-HM3_A08 is sourced from the original manufacturer or authorized distributors?
All SMF36A-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 SMF36A-HM3_A08 meets industry standards.
7.What is the process for return or replacement of SMF36A-HM3_A08?
All SMF36A-HM3_A08 units undergo pre-shipment inspection (PSI). If there is an issue with SMF36A-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 SMF36A-HM3_A08 part is unused and in its original packaging.
Return procedure for SMF36A-HM3_A08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF36A-HM3_A08 Tags
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