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Vishay General Semiconductor - Diodes Division VTVS28ASMF-M3-08
- Part No.:
- VTVS28ASMF-M3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS28ASMF-M3-08.pdf
- Description:
- TVS DIODE 27.9VWM 47VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,531
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Product details
Overview
VTVS28ASMF-M3-08 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 a 27.9 V maximum stand-off voltage (VRWM), 31.4–34.7 V reverse breakdown voltage (VBR at IT = 1 mA), 47 A peak pulse current (IPPM, 10/1000 μs), 47 V maximum clamping voltage (VC), and 412 pF typical junction capacitance at 0 V - deployed in automotive infotainment power rails and USB-C port protection.
For engineers reviewing the VTVS28ASMF-M3-08 datasheet, VTVS28ASMF-M3-08 pinout, VTVS28ASMF-M3-08 application, or VTVS28ASMF-M3-08 equivalent, this page delivers verified electrical specs, SMF package dimensions, IEC 61000-4-2 ±30 kV ESD immunity, AEC-Q101 qualification status, and real-world clamping behavior under 10/1000 μs transients - critical for robust front-end protection design in harsh environments.
Technical Context
This device operates as a unidirectional avalanche diode with fast response time enabled by Vishay's "Low-Noise" technology. Its 20 K/W thermal resistance (RthJL) and 175 °C maximum junction temperature support high-reliability operation in thermally constrained PCB layouts.
The SMF (DO-219AB) package provides compatibility with SOD-123W/SOD-123F footprints while delivering 400 W peak pulse power handling. Its halogen-free molding compound, MSL level 1 rating, and reflow-solderable construction meet automotive and industrial assembly requirements.
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) | 27.9 V (maximum continuous reverse voltage before significant leakage; sets operating margin for 24 V systems) |
| Breakdown Voltage (VBR) | 31.4–34.7 V at IT = 1 mA (avalanche onset range; ensures reliable triggering above normal operating voltage) |
| Clamping Voltage (VC) | 47 V at IPPM = 8.21 A (voltage seen by protected circuit during worst-case 10/1000 μs surge) |
| Junction Capacitance | 412 pF at VR = 0 V, f = 1 MHz (impacts signal integrity on high-speed lines like USB 2.0) |
| ESD Immunity | ±30 kV contact & air discharge per IEC 61000-4-2 (meets automotive and industrial ESD robustness standards) |
| Operating Temperature | −55 °C to +175 °C (supports under-hood and industrial ambient conditions without derating) |
Pinout & Package
SMF (DO-219AB) package: low-profile surface-mount case with cathode marking bar; compatible with SOD-123W footprint; 3.9 mm × 1.9 mm × 1.08 mm body; halogen-free, MSL level 1, reflow-compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to protected line (e.g., VBUS); enables low VF (1.8 V @ 50 A) clamping during positive surges |
| Cathode | Current exit terminal during reverse avalanche | Connected to ground; carries full IPPM during transient suppression; marked with bar on top surface |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Enables robust protection against ISO 7637-2 pulse 1/2a/5a surges in 24 V automotive systems |
| ±5 % VBR tolerance (A-grade) | Ensures tight clamping threshold control across production lots for consistent system-level protection margins |
| IEC 61000-4-2 ±30 kV ESD rating | Eliminates need for external ESD staging in USB, HDMI, and sensor interface designs |
| AEC-Q101 qualified | Validated for automotive electronics use including infotainment, ADAS camera modules, and body control units |
| Low-profile SMF package | Reduces board space vs. SMA/SMB; supports automated placement and high-density routing near connectors |
Applications
| Automotive Infotainment Power Rail | USB-C Port Protection |
|---|---|
|
Use Scenario: Protecting 24 V supply lines feeding head unit processors and display drivers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between VBAT+ and chassis ground to clamp transients exceeding 27.9 V. Use Value: Limits peak voltage to ≤47 V during 10/1000 μs surges, preventing damage to downstream PMICs and SoCs rated for 30 V absolute max. |
Use Scenario: Safeguarding USB-C CC and VBUS pins against ESD events and hot-plug induced overshoot. IC Role / Device Role / Timing Role: Standoff-rated TVS connected from CC/VBUS to GND to absorb ±30 kV contact discharges without latch-up. Use Value: Maintains signal integrity with 412 pF capacitance while meeting USB-IF ESD compliance without degrading data rate. |
| Industrial Sensor Interface | DC Motor Control Feedback Line |
|
Use Scenario: Shielding 4–20 mA analog input circuits in PLC I/O modules from field-induced surges and wiring faults. IC Role / Device Role / Timing Role: Low-leakage (≤0.05 μA at VRWM) unidirectional suppressor on signal path to ground. Use Value: Prevents measurement drift and ADC saturation during 1 kV ring wave transients while adding negligible offset error. |
Use Scenario: Clamping inductive kickback on Hall-effect sensor feedback lines in BLDC motor drives. IC Role / Device Role / Timing Role: Fast-response TVS placed across sensor output to suppress >100 V spikes generated during MOSFET switching. Use Value: Responds within nanoseconds to limit voltage excursion to 47 V, preserving sensor IC reliability over 10⁵+ cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28A-E3/57T | Same VRWM (28 V), but lower PPPM (400 W same), higher VC (49.1 V), larger SMA package (4.5 × 2.7 mm) | Less suitable for space-constrained USB-C or automotive camera modules due to 2.5× larger footprint | Select VTVS28ASMF-M3-08 when board area is limited and AEC-Q101 qualification is required. |
| TPSMD28A | Same VRWM (28 V), identical DO-219AB package, but only ±30 kV ESD (no AEC-Q101 listing in public docs) | Lacks automotive qualification evidence; not recommended for OEM vehicle programs requiring audit-ready compliance | Choose VTVS28ASMF-M3-08 where automotive-grade traceability and full AEC-Q101 test reports are mandatory. |
Compared with SMAJ28A-E3/57T and TPSMD28A, the VTVS28ASMF-M3-08 delivers identical surge rating in a smaller footprint and includes documented AEC-Q101 qualification - making it the preferred choice for next-gen automotive and compact industrial designs demanding both size efficiency and compliance assurance.
Availability
VTVS28ASMF-M3-08 is available at Aetrix Electronics and suitable for automotive infotainment power rail protection, USB-C port hardening, and industrial sensor interface surge suppression requiring stable component supply and long-term lifecycle support.
Supply support for VTVS28ASMF-M3-08 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, and optoelectronics for automotive, industrial, and computing markets.
The VTVS eSMP® Series targets high-density, high-surge applications where low profile, AEC-Q101 compliance, and precise clamping are essential - especially in modern vehicle ECUs and portable electronics interfaces.
FAQ
What is the maximum clamping voltage of the VTVS28ASMF-M3-08 under a 10/1000 μs surge?
The VTVS28ASMF-M3-08 has a maximum reverse clamping voltage (VC) of 47 V at its rated peak pulse current of 8.21 A (10/1000 μs waveform). This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transient events. The VTVS28ASMF-M3-08 maintains this clamping performance across its full operating temperature range of −55 °C to +175 °C.
Is the VTVS28ASMF-M3-08 qualified to AEC-Q101?
Yes, the VTVS28ASMF-M3-08 is explicitly AEC-Q101 qualified, as confirmed in Vishay's official documentation (Rev. 2.2, 19-Nov-2021, Doc. #85891). This qualification covers stress tests including HTGB, HTRB, AC/DC life test, and ESD, validating its suitability for automotive electronic control units. The VTVS28ASMF-M3-08 carries the "M3" environmental and quality code denoting AEC-Q101 compliance and RoHS/lead-free termination.
What is the junction capacitance of the VTVS28ASMF-M3-08 and how does it affect high-speed signal lines?
The VTVS28ASMF-M3-08 exhibits 412 pF typical junction capacitance at VR = 0 V and f = 1 MHz. While acceptable for DC power rails and low-speed analog signals (e.g., 4–20 mA loops), this capacitance may attenuate edge rates on high-speed digital lines such as USB 2.0 or HDMI. For those applications, designers should verify signal integrity via simulation or prototype testing - the VTVS28ASMF-M3-08 remains appropriate for VBUS and CC line protection where bandwidth constraints permit.
Does the VTVS28ASMF-M3-08 support reflow soldering, and what are the peak temperature limits?
Yes, the VTVS28ASMF-M3-08 is fully compatible with lead-free reflow soldering processes. Its SMF (DO-219AB) package is rated for peak temperatures up to 260 °C, conforming to J-STD-020 MSL level 1 requirements. The device uses tin-plated terminations and halogen-free molding compound, ensuring compatibility with standard PCB assembly lines without special handling or baking.
How does the ±5 % VBR tolerance of the VTVS28ASMF-M3-08 impact system-level protection design?
The ±5 % VBR tolerance (denoted by the "A" suffix in VTVS28ASMF-M3-08) ensures tight control over the avalanche initiation point - ranging from 31.4 V to 34.7 V at IT = 1 mA. This allows designers to set precise guardband margins above the 27.9 V VRWM, minimizing false triggering while guaranteeing activation before downstream components exceed their absolute maximum ratings. The VTVS28ASMF-M3-08 thus enables repeatable, production-ready protection architecture in safety-critical systems.
VTVS28ASMF-M3-08 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):
- 27.9V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 47V
- Current - Peak Pulse (10/1000µs):
- 8.21A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 412pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS28ASMF-M3-08 FAQ
1.How can I place an order for VTVS28ASMF-M3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS28ASMF-M3-08 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 VTVS28ASMF-M3-08 reliable?
The price and inventory of VTVS28ASMF-M3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VTVS28ASMF-M3-08 is usually 5 days.
3.What payment methods are accepted for VTVS28ASMF-M3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS28ASMF-M3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS28ASMF-M3-08?
VTVS28ASMF-M3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS28ASMF-M3-08 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 VTVS28ASMF-M3-08?
For technical support, including VTVS28ASMF-M3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS28ASMF-M3-08 requirements.
6.How does Aetrix verify that VTVS28ASMF-M3-08 is sourced from the original manufacturer or authorized distributors?
All VTVS28ASMF-M3-08 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 VTVS28ASMF-M3-08 meets industry standards.
7.What is the process for return or replacement of VTVS28ASMF-M3-08?
All VTVS28ASMF-M3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS28ASMF-M3-08, 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 VTVS28ASMF-M3-08 part is unused and in its original packaging.
Return procedure for VTVS28ASMF-M3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS28ASMF-M3-08 Tags
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