My Inquiry
My Account
Vishay General Semiconductor - Diodes Division VTVS21GSMF-HM3-08
- Part No.:
- VTVS21GSMF-HM3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS21GSMF-HM3-08.pdf
- Description:
- TVS DIODE 20.5VWM 34VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,782
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
VTVS21GSMF-HM3-08 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 23.72 V minimum and 24.69 V maximum reverse breakdown voltage at 1 mA, 20.5 V maximum stand-off voltage, 11.67 A peak pulse current (10/1000 μs), and clamps to 34 V at rated current - deployed in automotive infotainment power rails and USB-C port protection.
For engineers reviewing the VTVS21GSMF-HM3-08 datasheet, VTVS21GSMF-HM3-08 pinout, VTVS21GSMF-HM3-08 application, or VTVS21GSMF-HM3-08 equivalent, key selection criteria include ±2 % VBR tolerance, halogen-free SOD-123W-compatible SMF package, IEC 61000-4-2 ±30 kV contact/air discharge compliance, 513 pF junction capacitance at 0 V, and AEC-Q101 qualification status.
Technical Context
This TVS diode operates as a unidirectional clamping device with avalanche breakdown behavior, triggered when reverse voltage exceeds 23.72–24.69 V. Its low-noise fast-response architecture achieves sub-nanosecond turn-on, enabling effective suppression of ESD transients and repetitive surges on 20.5 V-rated signal or power lines.
The device sustains 400 W peak pulse power under 10/1000 μs waveform, exhibits 20 K/W thermal resistance to lead, and maintains stable operation from −55 °C to +175 °C junction temperature - supporting under-hood automotive environments and industrial control I/O protection where thermal margin and reliability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 23.72 V / 24.69 V at IT = 1 mA - defines precise clamping threshold for 20.5 V nominal line protection |
| VRWM | 20.5 V max - ensures no leakage conduction during normal 20.5 V DC operation |
| IPPM | 11.67 A (10/1000 μs) - supports robust surge immunity per ISO 16750-2 Level III |
| VC | 34 V at IPPM - limits downstream IC stress to safe levels during transient events |
| CD | 513 pF at VR = 0 V, f = 1 MHz - compatible with <50 Mbps data lines (e.g., CAN FD, LIN) |
| ESD Rating | ±30 kV contact & air discharge (IEC 61000-4-2) - meets automotive ESD immunity requirements |
| Package | SMF (DO-219AB), footprint-compatible with SOD-123W - enables drop-in replacement in space-constrained PCBs |
Pinout & Package
SMF (DO-219AB) package: low-profile surface-mount outline measuring 3.9 mm × 1.9 mm × 1.08 mm, cathode-marked with bar, compatible with wave and reflow soldering (peak 260 °C), MSL level 1, halogen-free molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for unidirectional clamping | Connected to protected line; conducts only during reverse overvoltage |
| Cathode | Clamping output terminal | Connected to ground or lower-potential rail; sinks surge current to earth |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % VBR tolerance | Enables tighter system-level voltage margin control vs. ±5 % variants (e.g., VTVS21ASMF) |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress |
| Low-profile SMF package | 1.08 mm height allows placement beneath connectors or in dense layout zones |
| Halogen-free & RoHS-compliant | Meets automotive ELV Directive and IPC-1752A material declaration requirements |
| "Low-Noise" fast response | Sub-1 ns turn-on time prevents overshoot propagation into sensitive analog or RF circuitry |
Applications
| Automotive Infotainment Power Rail | USB-C Port ESD Protection |
|---|---|
Use Scenario: Protecting 20 V supply lines feeding display controllers and audio codecs in head units. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between input capacitor and LDO regulator input. Use Value: Limits transient voltage to ≤34 V during load dump or jump-start events, preserving downstream LDO integrity. |
Use Scenario: Safeguarding USB-C CC and VBUS pins against hot-plug ESD and cable-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS line with 20.5 V working voltage matching USB PD 3.0 20 V profile. Use Value: Clamps ±30 kV ESD pulses within 1 ns while adding only 513 pF loading - no data rate degradation. |
| Industrial Sensor Interface | Telematics LTE Antenna Bias Line |
Use Scenario: Shielding 24 V two-wire loop-powered sensors from field wiring transients. IC Role / Device Role / Timing Role: Primary surge protector on sensor supply input, upstream of TVS array and filter network. Use Value: Absorbs 400 W surges without thermal runaway, maintaining <1 μA leakage at 20.5 V for precision current-loop accuracy. |
Use Scenario: Protecting DC bias injection path feeding active LTE antennas in vehicle telematics modules. IC Role / Device Role / Timing Role: High-reliability unidirectional TVS on 12–24 V bias rail, co-located with ferrite bead. Use Value: Withstands repeated 10/1000 μs surges up to 11.67 A while operating continuously at +175 °C junction temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VTVS21ASMF-HM3-08 | ±5 % VBR (23.0–25.4 V), same package and power rating | Looser voltage tolerance acceptable in non-critical 20 V systems with wider design margins | Select when cost sensitivity outweighs tight clamping threshold requirements |
| SMAJ22A-E3/5AT | 22 V VBR min (±5 %), SMA package (DO-214AC), 400 W rating, no AEC-Q101 | Larger footprint (4.5 × 2.7 mm), higher thermal resistance (35 K/W), not automotive-qualified | Use in industrial or consumer designs where AEC-Q101 and space constraints are not mandatory |
Compared with VTVS21ASMF-HM3-08 and SMAJ22A-E3/5AT, VTVS21GSMF-HM3-08 delivers tighter ±2 % breakdown tolerance and AEC-Q101 validation in a smaller SMF package - making it optimal for automotive ECU power rail protection where voltage margin, reliability, and board area are simultaneously constrained.
Availability
VTVS21GSMF-HM3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, USB-C interface protection, and industrial sensor power conditioning requiring stable component supply across extended production lifecycles.
Supply support for VTVS21GSMF-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.
The TransZorb® TVS family targets robust ESD and surge protection in harsh environments, with VTVS21GSMF-HM3-08 engineered specifically for AEC-Q101-compliant 20–24 V DC power line hardening.
FAQ
What is the exact reverse breakdown voltage range for VTVS21GSMF-HM3-08?
VTVS21GSMF-HM3-08 has a guaranteed reverse breakdown voltage range of 23.72 V to 24.69 V at IT = 1 mA and TJ = 25 °C, reflecting its ±2 % VBR tolerance grade. This tight specification ensures predictable clamping behavior on 20.5 V nominal lines and distinguishes it from ±5 % variants like VTVS21ASMF-HM3-08.
Is VTVS21GSMF-HM3-08 qualified for automotive use?
Yes, VTVS21GSMF-HM3-08 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias, temperature cycling, and ESD robustness per automotive reliability standards. Its 175 °C maximum junction temperature and halogen-free construction further align with automotive electronics requirements.
What is the clamping voltage of VTVS21GSMF-HM3-08 at its rated peak pulse current?
VTVS21GSMF-HM3-08 clamps to a maximum of 34 V at its rated peak pulse current of 11.67 A (10/1000 μs waveform). This value is measured under standardized surge conditions and defines the upper voltage limit imposed on protected circuits during transient events.
Does VTVS21GSMF-HM3-08 meet IEC 61000-4-2 ESD immunity standards?
Yes, VTVS21GSMF-HM3-08 provides ±30 kV contact discharge and ±30 kV air discharge protection per IEC 61000-4-2, verified across 10 consecutive pulses. This performance is intrinsic to its "Low-Noise" fast-response silicon structure and makes it suitable for front-end ESD protection in automotive and industrial interfaces.
What package type does VTVS21GSMF-HM3-08 use, and is it compatible with standard SOD-123 footprints?
VTVS21GSMF-HM3-08 uses the SMF (DO-219AB) package - a low-profile variant compatible with SOD-123W, SOD-123F, and SOD-123FL outlines. Its 3.9 mm × 1.9 mm × 1.08 mm dimensions and cathode-bar marking allow direct integration into existing SOD-123-based layouts without footprint redesign.
VTVS21GSMF-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):
- 20.5V
- Voltage - Breakdown (Min):
- 23.72V
- Voltage - Clamping (Max) @ Ipp:
- 34V
- Current - Peak Pulse (10/1000µs):
- 11.67A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 513pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS21GSMF-HM3-08 FAQ
1.How can I place an order for VTVS21GSMF-HM3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS21GSMF-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 VTVS21GSMF-HM3-08 reliable?
The price and inventory of VTVS21GSMF-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 VTVS21GSMF-HM3-08 is usually 5 days.
3.What payment methods are accepted for VTVS21GSMF-HM3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS21GSMF-HM3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS21GSMF-HM3-08?
VTVS21GSMF-HM3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS21GSMF-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 VTVS21GSMF-HM3-08?
For technical support, including VTVS21GSMF-HM3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS21GSMF-HM3-08 requirements.
6.How does Aetrix verify that VTVS21GSMF-HM3-08 is sourced from the original manufacturer or authorized distributors?
All VTVS21GSMF-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 VTVS21GSMF-HM3-08 meets industry standards.
7.What is the process for return or replacement of VTVS21GSMF-HM3-08?
All VTVS21GSMF-HM3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS21GSMF-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 VTVS21GSMF-HM3-08 part is unused and in its original packaging.
Return procedure for VTVS21GSMF-HM3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS21GSMF-HM3-08 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
