My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6T24AHM3_B/H
- Part No.:
- SM6T24AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T24AHM3_B/H.pdf
- Description:
- 600W,24V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,733
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6T24AHM3_B/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, rated for 24 V standoff voltage (VWM = 20.5 V), 33.2 V clamping voltage at 18 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform. It features glass passivated junction, AEC-Q101 qualification, and halogen-free RoHS compliance - used to protect automotive sensor signal lines from inductive switching transients.
For engineers reviewing the SM6T24AHM3_B/H datasheet, SM6T24AHM3_B/H pinout, SM6T24AHM3_B/H application, or SM6T24AHM3_B/H equivalent, key selection criteria include clamping performance under 10/1000 μs surge, unidirectional polarity marking, SMB thermal resistance (RθJA = 100 °C/W), and AEC-Q101 qualification for automotive-grade reliability validation.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity identification. Its breakdown voltage (VBR) is specified at 22.8–25.2 V with 1 mA test current, and it achieves 33.2 V maximum clamping voltage (VC) at 18 A IPPM under standardized 10/1000 μs waveform.
Designed for surface-mount placement on PCBs with 0.2" × 0.2" copper pads per terminal, it delivers low-inductance transient suppression while meeting J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - maximum reverse stand-off voltage before clamping begins; defines operating margin below breakdown |
| VBR min/max | 22.8 V / 25.2 V - breakdown occurs within this range at 1 mA; ensures consistent turn-on threshold |
| VC @ IPPM | 33.2 V at 18 A - clamping voltage limits downstream IC stress during 10/1000 μs surge events |
| PPPM | 600 W - peak pulse power handling capability determines survivability against defined transient energy |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance informs derating above 25 °C ambient |
| TJ max | +150 °C - maximum junction temperature sets upper limit for thermal design margin |
| ID @ VWM | 1.0 μA - ultra-low leakage preserves signal integrity in high-impedance sensing paths |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads solderable per J-STD-002. Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground reference | Provides low-impedance path to ground during transient overvoltage on cathode side |
| Cathode | Protected line connection; marked with band | Connected to signal/power line requiring clamping; reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surges without failure |
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment interfaces |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes voltage overshoot across protected ICs, reducing risk of latch-up or gate oxide damage |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without moisture-related popcorning or delamination |
| Glass passivated junction | Enhances long-term reliability and stability of breakdown characteristics under thermal cycling |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive kickback in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and chassis ground to shunt transient energy before reaching interface IC. Use Value: Limits voltage excursion to ≤33.2 V during 18 A surge, preserving signal integrity and preventing damage to 3.3 V/5 V microcontrollers and analog front-ends. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and ESD in factory automation environments. IC Role / Device Role / Timing Role: Standoff-clamp TVS installed at field-side connector to absorb repetitive 600 W transients without degradation. Use Value: Maintains <1 μA leakage at 20.5 V, ensuring accurate logic-level detection while surviving >1000 surges per MIL-STD-883H Method 3015.7. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
Use Scenario: Secondary-side DC output protection in wall adapters subjected to accidental short-circuit recovery spikes and capacitor discharge transients. IC Role / Device Role / Timing Role: Fast-response unidirectional suppressor placed between +VOUT and GND to clamp overshoot during regulation loop instability. Use Value: Clamps within nanoseconds to 33.2 V, preventing overvoltage damage to USB-PD controllers and load switches rated for ≤36 V absolute maximum. | Use Scenario: Protection of Ethernet PHY interface pins (e.g., MDI-X) against lightning-induced surges and hot-swap ESD in enterprise switches. IC Role / Device Role / Timing Role: Primary-stage TVS on differential pair lines, coordinated with common-mode chokes to meet IEC 61000-4-5 Level 4 (4 kV) Use Value: Withstands 600 W pulses while maintaining <0.5 pF junction capacitance at zero bias, minimizing signal distortion on 100BASE-TX links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Same VWM (20.5 V), identical SMB package, but lower PPPM (400 W) and higher VC (38.9 V at 15.4 A) | Limited to less severe surge environments (e.g., IEC 61000-4-2 ESD only); not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 600 W surge margin |
| SMCJ24A | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VWM and VBR range, RθJA = 25 °C/W | Requires larger PCB footprint and supports higher sustained power dissipation; suited for industrial motor drives | Choose when system-level surge testing exceeds 600 W or thermal management allows larger package |
Compared with SMAJ24A and SMCJ24A, SM6T24AHM3_B/H provides optimal balance of AEC-Q101 qualification, 600 W surge rating, and SMB footprint - making it preferred for space-constrained automotive and industrial edge nodes where qualification and reliability are non-negotiable.
Availability
SM6T24AHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SM6T24AHM3_B/H 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 General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SM6T Series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, precise clamping, and robust surge endurance are critical.
FAQ
What is the clamping voltage of SM6T24AHM3_B/H at its rated peak pulse current?
The SM6T24AHM3_B/H has a maximum clamping voltage (VC) of 33.2 V at 18 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured with the device mounted on 0.2" × 0.2" copper pads per terminal and reflects worst-case voltage seen by protected circuitry during surge events. The SM6T24AHM3_B/H maintains this clamping performance across its qualified operating temperature range.
Is SM6T24AHM3_B/H suitable for automotive applications?
Yes, SM6T24AHM3_B/H is AEC-Q101 qualified and designated with the HM3 suffix, indicating halogen-free, RoHS-compliant construction and automotive-grade reliability validation. It is explicitly intended for use in automotive subsystems such as body control modules, ADAS sensor interfaces, and powertrain ECUs where transient immunity and long-term stability under thermal cycling are required. The SM6T24AHM3_B/H meets all stress test requirements defined in AEC-Q101 Rev D.
What does the "B/H" suffix mean in SM6T24AHM3_B/H?
The "B/H" suffix in SM6T24AHM3_B/H indicates packaging configuration: "B" denotes tape-and-reel delivery per EIA-481 standards, and "H" specifies a 7-inch diameter reel containing 750 units. This ordering code also confirms halogen-free (HM3) material content and AEC-Q101 qualification. The SM6T24AHM3_B/H is distinct from commercial-grade E3/M3 variants and must be selected when automotive compliance and traceable lot control are mandatory.
How does SM6T24AHM3_B/H compare to bidirectional TVS diodes like SM6T24CA?
SM6T24AHM3_B/H is unidirectional and features a cathode band for polarity identification, whereas SM6T24CA is bidirectional with no polarity marking and symmetric clamping in both directions. The SM6T24AHM3_B/H offers lower leakage (<1 μA at 20.5 V) and is optimized for DC-biased lines like power rails or single-ended signals. Bidirectional types are reserved for AC-coupled or floating lines such as data buses - the SM6T24AHM3_B/H is not interchangeable with SM6T24CA without circuit redesign.
What is the thermal resistance of SM6T24AHM3_B/H, and how does it affect layout?
The SM6T24AHM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This value assumes minimal PCB copper area; increasing pad size or adding internal ground planes reduces RθJA significantly. For reliable operation at elevated ambient temperatures, designers must apply derating per Figure 2 in the datasheet - e.g., at 85 °C ambient, the SM6T24AHM3_B/H supports only ~65% of its 600 W peak rating. Proper thermal layout directly impacts surge survivability.
SM6T24AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 18A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SM6T24AHM3_B/H FAQ
1.How can I place an order for SM6T24AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T24AHM3_B/H 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 SM6T24AHM3_B/H reliable?
The price and inventory of SM6T24AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T24AHM3_B/H is usually 5 days.
3.What payment methods are accepted for SM6T24AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T24AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T24AHM3_B/H?
SM6T24AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T24AHM3_B/H 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 SM6T24AHM3_B/H?
For technical support, including SM6T24AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T24AHM3_B/H requirements.
6.How does Aetrix verify that SM6T24AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SM6T24AHM3_B/H 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 SM6T24AHM3_B/H meets industry standards.
7.What is the process for return or replacement of SM6T24AHM3_B/H?
All SM6T24AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T24AHM3_B/H, 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 SM6T24AHM3_B/H part is unused and in its original packaging.
Return procedure for SM6T24AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T24AHM3_B/H 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
