My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMC5K24A-M3/H
- Part No.:
- SMC5K24A-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K24A-M3/H.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,742
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMC5K24A-M3/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 38.9 V clamping voltage (VC) at 129 A (10/1000 μs), and 5000 W peak pulse power rating - deployed in automotive power modules and industrial sensor interfaces.
For engineers reviewing the SMC5K24A-M3/H datasheet, SMC5K24A-M3/H pinout, SMC5K24A-M3/H application, or SMC5K24A-M3/H equivalent, key selection criteria include clamping performance under 129 A surge, unidirectional polarity with cathode band marking, AEC-Q101 qualification eligibility (though not applied to this variant), and compatibility with reflow profiles up to 260 °C per J-STD-020 MSL Level 1.
Technical Context
This TVS operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert transient energy away from downstream ICs or MOSFETs. Its low incremental surge resistance and fast response time (<1 ns) ensure minimal overvoltage exposure during 8/20 μs or 10/1000 μs transients.
Thermal design relies on RthJA = 90 °C/W (JEDEC 51-2A, FR4, 2 oz copper) and RthJM = 4.0 °C/W (JEDEC 51-14 TDIM), enabling robust operation up to TJ = 150 °C. Junction capacitance is <100 pF at VWM, supporting protection of moderate-speed data lines without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin for 24 V systems. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - guaranteed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 38.9 V at 129 A (10/1000 μs) - clamped voltage seen by protected circuit during worst-case surge; limits stress on 30 V-rated components. |
| PPPM | 5000 W - peak pulse power handling capability with 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 compliance when properly laid out. |
| TJ max. | +150 °C - maximum junction temperature; enables use in under-hood automotive or high-ambient industrial environments. |
| ESD Rating | ±30 kV HBM (contact & air) - exceeds IEC 61000-4-2 requirements; protects against handling and system-level electrostatic events. |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.11 mm x 6.22 mm footprint and 2.90 mm height; compatible with automated assembly. |
Pinout & Package
SMC5K24A-M3/H uses the standard SMC (DO-214AB) package: molded epoxy case with matte tin-plated leads, cathode indicated by a color band. The device has two terminals: anode and cathode - no internal circuitry or additional pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when voltage exceeds VBR - polarity must match system grounding scheme. |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes current path during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power (10/1000 μs) | Enables protection against severe load dump and inductive switching surges in 24 V automotive and industrial power systems. |
| Clamping voltage ≤38.9 V at 129 A | Keeps downstream 30 V logic or gate drivers within safe operating area during 10/1000 μs transients. |
| MSL Level 1, 260 °C peak reflow | Supports lead-free reflow soldering without moisture-induced damage; eliminates pre-bake requirement for production. |
| UL 497B recognized (E136766) | Validates safety compliance for use in telecom and industrial equipment requiring certified surge protection components. |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills environmental compliance mandates for global electronics manufacturing and end-of-life recycling. |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs of body control modules (BCM) against ISO 7637-2 load dump pulses and alternator ripple. IC Role / Device Role / Timing Role: Shunt-type transient voltage suppressor placed at board-level input filter stage, upstream of DC/DC converters and microcontrollers. Use Value: Limits clamped voltage to ≤38.9 V, preventing latch-up or oxide breakdown in 30 V-rated power management ICs during 129 A surges. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) of pressure/temperature transmitters exposed to field wiring transients. IC Role / Device Role / Timing Role: Unidirectional TVS mounted directly at connector entry point to clamp induced surges before reaching precision amplifier or ADC front-end. Use Value: Low clamping voltage and sub-nanosecond response prevent signal corruption and maintain measurement accuracy under repetitive 8/20 μs lightning-induced surges. |
| Telecom DC Power Feeds | Computer Peripheral Port Protection |
Use Scenario: Securing -48 V DC power inputs of remote radio units (RRUs) and optical line terminals (OLTs) against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Reverse-polarity TVS (cathode to -48 V rail) providing primary overvoltage defense in multi-stage protection schemes. Use Value: 5000 W rating and 38.9 V clamping enable compliance with ITU-T K.20/21 immunity requirements for Class B equipment. | Use Scenario: Adding robustness to USB-C or PCIe auxiliary power lines (VCONN/VDD) in docking stations and expansion chassis. IC Role / Device Role / Timing Role: Secondary surge clamp after primary GDT or polymer PTC, absorbing residual energy that bypasses coarse protection. Use Value: Low leakage (<1 μA at 24 V) avoids loading sensitive bias networks; SMC package allows placement near high-density connectors. |
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-E3/5A | Lower PPPM (400 W), smaller SMA package, same VWM/VBR range, higher VC (43.5 V @ 58.1 A) | Targeted at lower-energy surges (IEC 61000-4-2/4-4); unsuitable for load dump or high-current 10/1000 μs events | Select when space-constrained and surge threat level is limited to ESD/EFT only. |
| 1.5KE24A | Higher PPPM (1500 W), axial DO-201 package, same VWM/VBR, VC = 38.9 V @ 38.8 A - lower surge current capacity | Used in legacy through-hole designs; lacks MSL Level 1 reflow compatibility and halogen-free compliance | Choose for cost-sensitive industrial replacements where SMT assembly is not required. |
Compared with SMAJ24A-E3/5A and 1.5KE24A, the SMC5K24A-M3/H delivers 12.5× higher peak pulse power and 3.3× higher clamping current while maintaining identical VWM and competitive VC - making it the preferred choice for high-reliability 24 V DC systems requiring automotive-grade surge resilience without through-hole assembly.
Availability
SMC5K24A-M3/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom DC power feeds, and computer peripheral port protection requiring stable component supply and full traceability.
Supply support for SMC5K24A-M3/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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMC5KxxA series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-power transient suppression in harsh electrical environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the maximum clamping voltage of the SMC5K24A-M3/H under a 10/1000 μs surge?
The SMC5K24A-M3/H has a maximum clamping voltage (VC) of 38.9 V when subjected to a 129 A peak pulse current with a 10/1000 μs waveform. This value is measured per Figure 3 in the official Vishay datasheet (Document Number: 87742, Rev. 09-Jan-2024) and represents the upper bound of voltage imposed on protected circuitry during standardized surge testing. The SMC5K24A-M3/H maintains this clamping performance across its specified operating temperature range.
Is the SMC5K24A-M3/H AEC-Q101 qualified?
No, the SMC5K24A-M3/H is not AEC-Q101 qualified. Per Vishay's documentation, AEC-Q101 qualification applies only to the HM3-suffixed variants (e.g., SMC5K24AHM3_A/H) and is limited to the SMC5K10A–SMC5K20A range. The SMC5K24A-M3/H carries the M3 suffix indicating halogen-free and RoHS compliance but lacks automotive qualification. For automotive applications requiring AEC-Q101, engineers must select the HM3 variant or verify alternate qualified parts.
What does the "-M3/H" suffix indicate in SMC5K24A-M3/H?
The "-M3/H" suffix in SMC5K24A-M3/H specifies two packaging attributes: "M3" denotes halogen-free, RoHS-compliant construction meeting JEDEC JESD201 Class 2 whisker resistance, and "H" indicates packaging in 7-inch plastic tape-and-reel format with a base quantity of 850 units. This ordering code aligns with Vishay's standard delivery mode for SMC-packaged devices and confirms compliance with environmental and assembly process requirements for modern SMT lines.
Can the SMC5K24A-M3/H be used in bidirectional configurations?
No, the SMC5K24A-M3/H is strictly unidirectional. Its electrical characteristics - including breakdown voltage specification, clamping behavior, and polarity marking (cathode band) - are defined only for reverse-biased operation. Bidirectional protection requires either two SMC5K24A-M3/H devices in series opposition or a dedicated bidirectional TVS such as the SMBJ24CA. Using a single SMC5K24A-M3/H in bidirectional mode risks failure during positive-going transients on the anode side.
What is the thermal resistance from junction to ambient (RthJA) for the SMC5K24A-M3/H?
The thermal resistance from junction to ambient (RthJA) for the SMC5K24A-M3/H is 90 °C/W, measured per JEDEC 51-2A on a standard FR4 PCB with 2 oz copper. This value assumes the recommended mounting pad layout shown in the Vishay datasheet and is critical for calculating steady-state junction temperature rise under leakage current or repeated low-energy surges. The SMC5K24A-M3/H also has RthJM = 4.0 °C/W (junction-to-mount), supporting thermal modeling in thermally constrained layouts.
SMC5K24A-M3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 129A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMC5K24A-M3/H FAQ
1.How can I place an order for SMC5K24A-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K24A-M3/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 SMC5K24A-M3/H reliable?
The price and inventory of SMC5K24A-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC5K24A-M3/H is usually 5 days.
3.What payment methods are accepted for SMC5K24A-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K24A-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K24A-M3/H?
SMC5K24A-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K24A-M3/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 SMC5K24A-M3/H?
For technical support, including SMC5K24A-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K24A-M3/H requirements.
6.How does Aetrix verify that SMC5K24A-M3/H is sourced from the original manufacturer or authorized distributors?
All SMC5K24A-M3/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 SMC5K24A-M3/H meets industry standards.
7.What is the process for return or replacement of SMC5K24A-M3/H?
All SMC5K24A-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K24A-M3/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 SMC5K24A-M3/H part is unused and in its original packaging.
Return procedure for SMC5K24A-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K24A-M3/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
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 …
