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Vishay General Semiconductor - Diodes Division VTVS36ASMF-HM3-18
- Part No.:
- VTVS36ASMF-HM3-18
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS36ASMF-HM3-18.pdf
- Description:
- TVS DIODE 36VWM 61VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,222
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Product details
Overview
VTVS36ASMF-HM3-18 from Vishay Semiconductors is a unidirectional 400 W TransZorb® transient voltage suppressor diode in SMF (DO-219AB) package, designed for ESD and surge protection of low-voltage DC lines. It features 36.0 V stand-off voltage (VRWM), 40.9–45.2 V reverse breakdown voltage (VBR at IT = 1 mA), and clamps to ≤61 V at 6.24 A peak pulse current (10/1000 μs), with ±5 % VBR tolerance and 342 pF capacitance at 0 V.
For engineers reviewing the VTVS36ASMF-HM3-18 datasheet, VTVS36ASMF-HM3-18 pinout, VTVS36ASMF-HM3-18 application, or VTVS36ASMF-HM3-18 equivalent, key selection criteria include its 175 °C max junction temperature, IEC 61000-4-2 ±30 kV ESD rating, halogen-free construction, and compatibility with SOD-123W footprint - critical for automotive infotainment, industrial sensor interfaces, and USB power rail protection.
Technical Context
This TVS diode operates as a unidirectional clamping device, triggered when reverse voltage exceeds its 36.0 V working threshold. Its low-clamping behavior (VC ≤ 61 V at IPPM = 6.24 A) ensures downstream ICs remain within safe operating limits during transients.
Constructed using "Low-Noise" avalanche technology, it achieves sub-nanosecond response time and supports wave/reflow soldering per J-STD-020 MSL level 1. The SMF package delivers 20 K/W thermal resistance to leads on infinite heat sink, enabling robust power dissipation in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform; defines maximum transient energy absorption capability) |
| Stand-off Voltage (VRWM) | 36.0 V (maximum continuous reverse voltage before significant leakage; sets protection threshold) |
| Breakdown Voltage (VBR) | 40.9–45.2 V at IT = 1 mA (±5 % tolerance; defines precise avalanche onset for reliable triggering) |
| Clamping Voltage (VC) | ≤61 V at IPPM = 6.24 A (voltage seen by protected circuit during worst-case surge; determines IC survivability) |
| Capacitance (CD) | 342 pF at VR = 0 V, f = 1 MHz (affects high-speed signal integrity; suitable for <10 Mbps data lines) |
| ESD Rating | ±30 kV contact & air discharge (IEC 61000-4-2; qualifies for harsh ESD environments without external shielding) |
| Junction Temperature Range | −55 °C to +175 °C (supports under-hood automotive and industrial ambient conditions) |
| Package | SMF (DO-219AB); compatible with SOD-123W footprint (enables drop-in replacement in existing PCB layouts) |
Pinout & Package
SMF (DO-219AB) package: low-profile surface-mount outline measuring 3.9 mm × 1.9 mm × 1.08 mm, with cathode marked by bar on top surface. Compatible with standard SOD-123W land pattern and reflow profiles up to 260 °C peak.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for clamping | Connected to system ground or lower-potential rail; establishes reference for unidirectional suppression |
| Cathode | Protected line connection | Connected to I/O line or power rail requiring protection; conducts avalanche current to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 3 surges (1 A, 2 Ω source) on 36 V rails |
| ±5 % VBR tolerance | Ensures tight clamping window across production lots, reducing design margin uncertainty |
| Halogen-free & RoHS-compliant | Meets automotive and industrial environmental compliance requirements without compromising performance |
| MSL level 1 rating | Allows unlimited floor life and standard reflow processing without baking or special handling |
| Low-profile SMF package | Reduces board space vs. SMA/SMB while maintaining thermal performance via optimized leadframe design |
Applications
| Automotive Infotainment Display Interface | Industrial RS-485 Sensor Node |
|---|---|
Use Scenario: Protecting LVDS or FPD-Link III video data lines between head unit and display against ESD events during assembly and field use. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed at connector side to shunt transients before reaching serializer/deserializer ICs. Use Value: 342 pF capacitance avoids signal degradation at 1–3 Gbps rates; ±30 kV ESD rating eliminates need for secondary protection layers. |
Use Scenario: Safeguarding RS-485 transceivers in factory-floor temperature sensors exposed to cable-borne surges and operator ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS on differential bus lines (A/B) to clamp common-mode transients without affecting DC bias or fail-safe operation. Use Value: 36.0 V VRWM matches typical 3.3 V or 5 V supply-referenced RS-485 designs; 175 °C TJ max enables operation near hot enclosures. |
| USB-C Power Delivery Input Stage | Smart Meter AC/DC Auxiliary Supply Rail |
Use Scenario: Secondary overvoltage protection on VBUS line after primary buck converter, guarding against adapter fault conditions. IC Role / Device Role / Timing Role: Fast-response TVS parallel to input capacitor to clamp fast-rising faults before controller shutdown activates. Use Value: 61 V clamping voltage provides >20 % margin above 48 V PD 3.0 max, ensuring MOSFET and controller survival during 10/1000 μs surges. |
Use Scenario: Protecting 36 V auxiliary rail derived from rectified AC in utility smart meters subject to lightning-induced surges on mains wiring. IC Role / Device Role / Timing Role: Primary surge limiter on DC output of bridge rectifier and filter stage, upstream of LDO regulator. Use Value: 400 W rating handles 10/1000 μs surges up to 6.24 A; halogen-free molding compound meets UL 94 V-0 and utility-grade flame-retardancy mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/57T | Same VRWM (36 V), but SMA package (DO-214AC); higher RthJA (50 K/W vs. 20 K/W); 600 W Pppm | Larger footprint; less suitable for ultra-thin modules; better for higher-energy surges where board space allows | Select when higher peak power (600 W) is required and PCB area permits SMA outline |
| TPSMD36CA | Bi-directional; same VRWM (36 V); 400 W; DO-214AB package; 500 pF capacitance | Supports AC-coupled or bidirectional signal lines; higher capacitance limits use to <1 Mbps interfaces | Select only if bidirectional protection is mandatory (e.g., antenna lines); avoid for high-speed digital I/O |
Compared with SMAJ36A-E3/57T and TPSMD36CA, VTVS36ASMF-HM3-18 offers superior thermal performance in minimal area, tighter VBR tolerance than most SMA alternatives, and optimal capacitance for medium-speed data lines - making it preferred for space-constrained, high-reliability 36 V rail protection.
Availability
VTVS36ASMF-HM3-18 is available at Aetrix Electronics and suitable for automotive infotainment, industrial RS-485 networks, and USB-C power delivery systems requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified reliability.
Supply support for VTVS36ASMF-HM3-18 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 VTVS eSMP® Series targets high-density ESD/surge protection in automotive and industrial electronics, emphasizing low profile, high power density, and AEC-Q101 qualification for under-hood and harsh-environment deployment.
FAQ
What is the maximum clamping voltage of the VTVS36ASMF-HM3-18 at its rated peak pulse current?
The VTVS36ASMF-HM3-18 clamps to a maximum of 61 V at its rated peak pulse current of 6.24 A (10/1000 μs waveform). This value is specified in the Electrical Characteristics table and defines the upper voltage limit imposed on protected circuits during surge events. The clamping performance is guaranteed across the full operating temperature range and ensures downstream ICs remain within absolute maximum ratings.
Is the VTVS36ASMF-HM3-18 AEC-Q101 qualified?
No - the VTVS36ASMF-HM3-18 is not AEC-Q101 qualified. The "H" in the part number denotes halogen-free construction, and "M3" indicates 3 k per 7″ reel packaging; AEC-Q101 qualification requires an additional suffix (e.g., "-HM3-AEC" or "-HM3Q"). For automotive applications requiring qualification, engineers should select the VTVS36ASMF-HM3Q variant, which shares identical electrical specs but includes full AEC-Q101 stress testing documentation.
What does the "-HM3-18" suffix indicate in VTVS36ASMF-HM3-18?
The "-HM3-18" suffix breaks down as follows: "H" = halogen-free molding compound; "M3" = 3 k units per 7″ reel (8 mm tape); "-18" = date code indicating week 18 of year 2021. This packaging format is standard for high-volume automated assembly and aligns with Vishay's tape-and-reel specifications for SMF devices. The part remains fully compatible with standard SOD-123W footprints and reflow profiles.
Can the VTVS36ASMF-HM3-18 be used in bidirectional signal lines like CAN or RS-485?
No - the VTVS36ASMF-HM3-18 is unidirectional and must be oriented with cathode toward the protected line and anode to ground. For bidirectional lines such as CAN or RS-485, a bi-directional TVS (e.g., VTVS36B... or TPSMD36CA) is required. Using this unidirectional device on AC-coupled or differential lines risks forward conduction during negative transients, potentially damaging the diode or failing to protect.
What is the thermal resistance junction-to-lead (RthJL) for the VTVS36ASMF-HM3-18?
The thermal resistance junction-to-lead (RthJL) for the VTVS36ASMF-HM3-18 is 20 K/W when mounted on an infinite heat sink. This value is measured per JEDEC standards and reflects the device's ability to transfer heat from the silicon junction to the PCB copper via the leads. It enables accurate thermal modeling for sustained surge duty cycles and confirms suitability for high-temperature environments up to 175 °C junction temperature.
VTVS36ASMF-HM3-18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-219AB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 61V
- Current - Peak Pulse (10/1000µs):
- 6.24A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 342pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS36ASMF-HM3-18 FAQ
1.How can I place an order for VTVS36ASMF-HM3-18 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS36ASMF-HM3-18 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 VTVS36ASMF-HM3-18 reliable?
The price and inventory of VTVS36ASMF-HM3-18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VTVS36ASMF-HM3-18 is usually 5 days.
3.What payment methods are accepted for VTVS36ASMF-HM3-18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS36ASMF-HM3-18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS36ASMF-HM3-18?
VTVS36ASMF-HM3-18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS36ASMF-HM3-18 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 VTVS36ASMF-HM3-18?
For technical support, including VTVS36ASMF-HM3-18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS36ASMF-HM3-18 requirements.
6.How does Aetrix verify that VTVS36ASMF-HM3-18 is sourced from the original manufacturer or authorized distributors?
All VTVS36ASMF-HM3-18 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 VTVS36ASMF-HM3-18 meets industry standards.
7.What is the process for return or replacement of VTVS36ASMF-HM3-18?
All VTVS36ASMF-HM3-18 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS36ASMF-HM3-18, 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 VTVS36ASMF-HM3-18 part is unused and in its original packaging.
Return procedure for VTVS36ASMF-HM3-18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS36ASMF-HM3-18 Tags
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