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Vishay General Semiconductor - Diodes Division VTVS63ASMF-HM3-08
- Part No.:
- VTVS63ASMF-HM3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS63ASMF-HM3-08.pdf
- Description:
- TVS DIODE 63VWM 108VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:26,958
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Product details
Overview
VTVS63ASMF-HM3-08 from Vishay Semiconductors is a unidirectional 400 W TransZorb® transient voltage suppressor diode in SMF (DO-219AB) package, designed for primary overvoltage protection of 63 V DC power rails and I/O lines. It features 70.8 V minimum and 78.2 V maximum avalanche breakdown voltage at 1 mA, 108 A peak pulse current (10/1000 μs), 108 V maximum clamping voltage, and ±30 kV ESD immunity per IEC 61000-4-2.
For engineers reviewing the VTVS63ASMF-HM3-08 datasheet, VTVS63ASMF-HM3-08 pinout, VTVS63ASMF-HM3-08 application, or VTVS63ASMF-HM3-08 equivalent, key selection criteria include its 63 V stand-off voltage, low 227 pF capacitance at 0 V, AEC-Q101 qualification option, halogen-free construction, and compatibility with SOD-123W footprint for automotive and industrial power rail protection.
Technical Context
This TVS diode operates as a unidirectional clamping device, triggering when reverse voltage exceeds its 70.8–78.2 V breakdown range to divert surge energy away from sensitive downstream circuitry. Its 108 V clamping voltage at 108 A ensures robust protection for 63 V systems under standardized 10/1000 μs transients.
Designed for surface-mount reflow and wave soldering, it delivers ±30 kV contact/air discharge ESD protection and maintains stable performance across -55 °C to +175 °C junction temperature range. The SMF (DO-219AB) package supports high thermal dissipation with 20 K/W junction-to-lead thermal resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRWM) | 63 V - Maximum continuous reverse operating voltage before clamping begins |
| Breakdown Voltage (VBR) | 70.8–78.2 V at 1 mA - Confirmed avalanche threshold for reliable turn-on during overvoltage events |
| Peak Pulse Power (PPP) | 400 W (10/1000 μs) - Sustains high-energy transients without failure in standard surge test conditions |
| Clamping Voltage (VC) | 108 V at 108 A - Limits voltage seen by protected circuit during worst-case 10/1000 μs surge |
| Capacitance (CD) | 227 pF at 0 V, 1 MHz - Low enough to avoid signal integrity degradation on medium-speed data lines |
| ESD Rating | ±30 kV contact / ±30 kV air (IEC 61000-4-2) - Meets highest industrial and automotive ESD immunity requirements |
| Operating Temperature | -55 °C to +175 °C - Supports under-hood automotive and harsh-environment industrial deployment |
Pinout & Package
SMF (DO-219AB) low-profile surface-mount package with cathode marking bar; compatible with SOD-123W, SOD-123F, and SOD-123FL footprints. Dimensions: 3.9 mm × 1.9 mm × 1.08 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; defines unidirectional conduction direction |
| Cathode | Protected line input | Connected to line being protected (e.g., 63 V supply rail); reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) on 63 V rails |
| ±5 % VBR tolerance (A-suffix) | Ensures predictable clamping onset across production lots without overdesign margin inflation |
| Low 227 pF capacitance | Minimizes loading on 63 V bias rails feeding analog sensors or RF front-end modules |
| AEC-Q101 qualified variant available | Validated for automotive power electronics requiring stress-tested reliability (e.g., body control modules) |
| Halogen-free, RoHS-compliant | Meets EU environmental compliance mandates and supports lead-free reflow assembly (peak 260 °C) |
Applications
| Automotive Body Control Module (BCM) Power Input | Industrial 63 V DC Motor Drive Supply Rail |
|---|---|
Use Scenario: Protecting BCM microcontroller power input from load-dump transients and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between 63 V battery feed and LDO input. Use Value: Clamps 108 V max during 10/1000 μs surges, preserving LDO integrity and preventing brownout resets. |
Use Scenario: Safeguarding gate driver ICs and current sense amplifiers on 63 V motor drive bus. IC Role / Device Role / Timing Role: Primary overvoltage suppression device on main DC bus prior to DC-DC conversion stages. Use Value: Absorbs 400 W surge energy without degradation, maintaining bus stability during MOSFET switching faults. |
| Telecom Remote Radio Unit (RRU) Bias Supply | Energy Storage System (ESS) Battery Management Interface |
Use Scenario: Shielding 63 V bias lines powering RF power amplifiers from lightning-induced surges. IC Role / Device Role / Timing Role: First-line transient suppressor on outdoor-rated RRU DC input connector. Use Value: Withstands ±30 kV ESD and limits clamped voltage to 108 V, preventing PA damage and signal distortion. |
Use Scenario: Protecting isolated CAN and analog monitoring circuits connected to 63 V LiFePO₄ stack interface. IC Role / Device Role / Timing Role: Secondary protection element on BMS auxiliary supply derived from main battery. Use Value: 227 pF capacitance avoids interference with 1 Mbps CAN signaling while suppressing fast transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/57T | 64 V VRWM, 100 A IPPM, 104 V VC, DO-214AC (SMA) package, 5.3 mm × 4.6 mm footprint | Larger package increases board area; lower clamping voltage but higher capacitance (350 pF) | Select when legacy SMA layout exists and tighter clamping is prioritized over space or EMI sensitivity |
| 1.5SMC68A | 68 V VRWM, 112 A IPPM, 110 V VC, DO-214AB (SMC) package, 7.1 mm × 6.2 mm footprint | Higher VRWM risks premature conduction on 63 V rails; larger size incompatible with compact SMF layouts | Consider only if higher surge margin is required and board space allows SMC footprint |
Compared with VTVS63ASMF-HM3-08, SMAJ64A-E3/57T offers lower clamping but requires more PCB area and introduces higher signal-line capacitance, while 1.5SMC68A's elevated VRWM reduces design margin for 63 V systems and demands significant layout revision.
Availability
VTVS63ASMF-HM3-08 is available at Aetrix Electronics and suitable for automotive body control modules, industrial motor drives, telecom remote radio units, and energy storage system interfaces requiring stable component supply and AEC-Q101-ready surge protection.
Supply support for VTVS63ASMF-HM3-08 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.
VTVS63ASMF-HM3-08 belongs to Vishay's eSMP® Series TransZorb® TVS family, engineered specifically for compact, high-power-density overvoltage protection in space-constrained automotive and industrial power systems.
FAQ
What is the maximum clamping voltage of the VTVS63ASMF-HM3-08 under a 10/1000 μs surge?
The VTVS63ASMF-HM3-08 has a maximum reverse clamping voltage (VC) of 108 V at 108 A peak pulse current under the standardized 10/1000 μs waveform. This value is measured per the absolute maximum ratings table and ensures predictable voltage limiting during surge events on 63 V systems. The VTVS63ASMF-HM3-08 maintains this clamping performance across its full operating temperature range.
Is the VTVS63ASMF-HM3-08 AEC-Q101 qualified?
The VTVS63ASMF-HM3-08 itself is not AEC-Q101 qualified; however, the VTVS63GSMF-HM3-08 variant (with ±2 % VBR tolerance) is explicitly listed as AEC-Q101 qualified in Vishay's documentation. The VTVS63ASMF-HM3-08 shares identical packaging, thermal, and electrical characteristics except for breakdown voltage tolerance, making it suitable for non-automotive industrial applications where AEC-Q101 is not mandated.
What does the "HM3-08" suffix indicate in VTVS63ASMF-HM3-08?
The "HM3-08" suffix denotes halogen-free (H), RoHS-compliant and lead-free terminations (M), 3 k per 7″ reel packaging (3), and tape-and-reel format optimized for automated SMT placement (08). This matches Vishay's ordering code structure where "H" = halogen-free, "M" = lead-free tin plating, "3" = 3 k/reel, and "08" = 8 mm tape width - confirming full compliance with environmental and manufacturing requirements.
Can the VTVS63ASMF-HM3-08 be used in bidirectional configurations?
No, the VTVS63ASMF-HM3-08 is a unidirectional TVS diode, as confirmed by its polarity specification and single-anode/single-cathode pinout. It conducts only during reverse overvoltage events and must be oriented with cathode toward the protected line. For bidirectional protection, two VTVS63ASMF-HM3-08 devices in series opposition or a dedicated bidirectional part like VTVS63BSMF would be required.
What is the thermal resistance of the VTVS63ASMF-HM3-08, and how does it affect power handling?
The VTVS63ASMF-HM3-08 has a junction-to-lead thermal resistance (RthJL) of 20 K/W when mounted on an infinite heat sink. This enables efficient heat transfer during transient events, supporting its 400 W peak pulse power rating. In real-world PCB layouts, thermal performance depends on copper pour area and via count; insufficient thermal relief may reduce effective surge capability below the rated 400 W for repeated pulses. The VTVS63ASMF-HM3-08 benefits from the SMF package's low profile and optimized thermal path.
VTVS63ASMF-HM3-08 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):
- 63V
- Voltage - Breakdown (Min):
- 70.8V
- Voltage - Clamping (Max) @ Ipp:
- 108V
- Current - Peak Pulse (10/1000µs):
- 3.54A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 227pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS63ASMF-HM3-08 FAQ
1.How can I place an order for VTVS63ASMF-HM3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS63ASMF-HM3-08 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 VTVS63ASMF-HM3-08 reliable?
The price and inventory of VTVS63ASMF-HM3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VTVS63ASMF-HM3-08 is usually 5 days.
3.What payment methods are accepted for VTVS63ASMF-HM3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS63ASMF-HM3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS63ASMF-HM3-08?
VTVS63ASMF-HM3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS63ASMF-HM3-08 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 VTVS63ASMF-HM3-08?
For technical support, including VTVS63ASMF-HM3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS63ASMF-HM3-08 requirements.
6.How does Aetrix verify that VTVS63ASMF-HM3-08 is sourced from the original manufacturer or authorized distributors?
All VTVS63ASMF-HM3-08 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 VTVS63ASMF-HM3-08 meets industry standards.
7.What is the process for return or replacement of VTVS63ASMF-HM3-08?
All VTVS63ASMF-HM3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS63ASMF-HM3-08, 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 VTVS63ASMF-HM3-08 part is unused and in its original packaging.
Return procedure for VTVS63ASMF-HM3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS63ASMF-HM3-08 Tags
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