My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6T24A-E3/52
;;2.jpg)
- Part No.:
- SM6T24A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T24A-E3/52.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,221
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6T24A-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 24 V standoff voltage (VWM = 20.5 V), 22.8–25.2 V breakdown voltage at 1 mA, 33.2 V max clamping voltage at 18 A (10/1000 μs), 600 W peak pulse power, and 150 °C max junction temperature. It protects MOSFETs and ICs in automotive and industrial power supply rails.
For engineers reviewing the SM6T24A-E3/52 datasheet, SM6T24A-E3/52 pinout, SM6T24A-E3/52 application, or SM6T24A-E3/52 equivalent, key selection criteria include clamping voltage margin relative to protected device's absolute maximum rating, IPPM derating above 25 °C, thermal resistance (RθJA = 100 °C/W), and AEC-Q101 qualification status of alternate variants.
Technical Context
The SM6T24A-E3/52 operates as a unidirectional avalanche diode with cathode-band polarity marking, optimized for fast response to ESD and inductive switching transients. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at 20.5 V), while low-inductance SMB packaging supports high-frequency surge suppression up to 10/1000 μs waveforms.
It is rated for 100 A non-repetitive forward surge current (10 ms half-sine), dissipates 5.0 W continuously at 50 °C on infinite heatsink, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak. Thermal resistance from junction-to-lead is 20 °C/W, enabling effective heat transfer to PCB copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - Maximum reverse working voltage before clamping begins; must exceed normal circuit operating voltage. |
| VBR min/max | 22.8 V / 25.2 V at 1 mA - Confirmed avalanche breakdown range; defines minimum overvoltage threshold for protection activation. |
| VC @ IPPM | 33.2 V at 18 A (10/1000 μs) - Clamped voltage seen by protected device during worst-case surge; determines safe margin vs. device abs max rating. |
| PPPM | 600 W - Peak pulse power handling capability; validates robustness against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; requires ≥5.0 mm × 5.0 mm copper pad per terminal for full-rated power dissipation. |
| TJ max | +150 °C - Maximum allowable junction temperature; enables operation in under-hood automotive environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant, MSL Level 1, UL 94 V-0 molding compound. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential side of protected line | Provides low-impedance path to ground during transient when cathode is held at higher potential. |
| Cathode | Current exit point in forward bias; marked with band; connected to higher-potential side | Defines polarity-sensitive clamping direction; must be tied to rail being protected (e.g., +12 V bus). |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Validates immunity to severe automotive load dump and inductive kick events without degradation. |
| Glass passivated chip junction | Ensures long-term stability of VBR and low leakage (<1 μA) across temperature and lifetime. |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >1 kV/ns), improving clamping fidelity. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking or special handling. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Suppressing load dump transients (ISO 7637-2 Pulse 5a) on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery rail and input filter capacitor. Use Value: Limits voltage excursion to ≤33.2 V during 18 A surge, protecting downstream 36 V-rated DC-DC converters and microcontrollers. | Use Scenario: Guarding analog outputs (e.g., 4–20 mA loops) of pressure/temperature sensors against field wiring ESD and cable coupling. IC Role / Device Role / Timing Role: Low-capacitance transient clamp on sensor output node, referenced to system ground. Use Value: Clamps 8/20 μs surges to ≤42.8 V while adding <1 pF parasitic capacitance, preserving signal bandwidth and accuracy. |
| Consumer Power Adapter Input Stage | MOSFET Gate Driver Transient Suppression |
Use Scenario: Protecting primary-side controller ICs in offline AC-DC adapters from line-side surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Secondary-side TVS across bulk capacitor terminals to absorb reflected transients. Use Value: Absorbs 600 W pulses without failure, maintaining VWM margin above 20.5 V while surviving repeated 10/1000 μs events. | Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs due to Miller-induced voltage spikes during switching. IC Role / Device Role / Timing Role: Clamp diode from gate to source, oriented to conduct only during negative-going spikes. Use Value: Activates within nanoseconds at ~22.8 V, limiting gate-source voltage to safe levels below ±20 V abs max rating. |
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 SMB package, 24 V VWM, but lower PPPM = 400 W and higher VC = 38.9 V at 10.3 A | Less robust for automotive load dump; suitable for consumer-grade 100–200 W surge environments | Select SMAJ24A only if system-level testing confirms 38.9 V clamping is acceptable and surge energy is ≤400 W. |
| SMCJ24A | Larger SMC (DO-214AB) package, same VWM/VBR, higher PPPM = 1500 W, lower VC = 38.9 V at 38.8 A | Requires larger PCB footprint; preferred for high-energy industrial motor drives and telecom power systems | Choose SMCJ24A when surge current exceeds 18 A or when extended thermal margin is required beyond SMB limits. |
Compared with SMAJ24A and SMCJ24A, the SM6T24A-E3/52 delivers optimal balance of compact SMB footprint, 600 W capability, and 33.2 V clamping-making it ideal for space-constrained automotive and industrial modules where both size and mid-tier surge robustness are critical.
Availability
SM6T24A-E3/52 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface design, and consumer power adapter development requiring stable component supply and RoHS-compliant sourcing.
Supply support for SM6T24A-E3/52 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 protection devices with emphasis on reliability, precision, and automotive qualification.
The SM6T Series is engineered specifically for surface-mount transient voltage suppression in harsh environments, targeting AEC-Q101 compliance, high surge robustness, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of the SM6T24A-E3/52 under a 10/1000 μs surge?
The SM6T24A-E3/52 has a maximum clamping voltage (VC) of 33.2 V at 18 A for a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88385 and represents the peak voltage seen by protected circuitry during standardized surge testing. The SM6T24A-E3/52 maintains this clamping performance across its specified operating temperature range and is validated for repetitive surge events when thermally managed per recommended pad layout.
Is the SM6T24A-E3/52 AEC-Q101 qualified?
No, the SM6T24A-E3/52 is not AEC-Q101 qualified. It carries the "E3" suffix indicating RoHS-compliant commercial grade. For AEC-Q101 qualification, select the automotive variant SM6T24AHE3_X (e.g., SM6T24AHE3_A), which uses the "HE3" suffix and is explicitly tested to AEC-Q101 stress requirements. The SM6T24A-E3/52 remains suitable for non-automotive industrial and consumer applications where qualification is not mandated.
What is the thermal resistance of the SM6T24A-E3/52, and how does it affect PCB layout?
The SM6T24A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To achieve rated 600 W pulse power and avoid thermal runaway, PCB layout must provide at least this pad area for each terminal, with internal ground/power planes connected via multiple vias. Reducing pad size increases RθJA, derating both continuous and pulse power capability of the SM6T24A-E3/52.
How does the SM6T24A-E3/52 differ from bidirectional TVS diodes like SM6T24CA?
The SM6T24A-E3/52 is unidirectional and features a cathode band for polarity-sensitive placement, clamping only reverse-voltage transients. In contrast, SM6T24CA is bidirectional (no polarity marking) and clamps transients of either polarity, making it suitable for AC lines or differential signal pairs. The SM6T24A-E3/52 offers lower leakage (<1 μA at VWM) than bidirectional variants and is preferred for DC rail protection where polarity is fixed and leakage sensitivity is critical.
What is the maximum reverse leakage current of the SM6T24A-E3/52 at its standoff voltage?
The SM6T24A-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated standoff voltage (VWM = 20.5 V), measured at 25 °C per Vishay document 88385. This low leakage ensures minimal power loss in standby mode and avoids false triggering in high-impedance sensing circuits. Leakage increases with temperature but remains below 10 μA up to 125 °C, supporting reliable operation in demanding thermal environments.
SM6T24A-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T24A-E3/52 FAQ
1.How can I place an order for SM6T24A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T24A-E3/52 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 SM6T24A-E3/52 reliable?
The price and inventory of SM6T24A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T24A-E3/52 is usually 5 days.
3.What payment methods are accepted for SM6T24A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T24A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T24A-E3/52?
SM6T24A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T24A-E3/52 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 SM6T24A-E3/52?
For technical support, including SM6T24A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T24A-E3/52 requirements.
6.How does Aetrix verify that SM6T24A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SM6T24A-E3/52 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 SM6T24A-E3/52 meets industry standards.
7.What is the process for return or replacement of SM6T24A-E3/52?
All SM6T24A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SM6T24A-E3/52, 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 SM6T24A-E3/52 part is unused and in its original packaging.
Return procedure for SM6T24A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T24A-E3/52 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 …
