My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMA6J24A-M3/5A
- Part No.:
- SMA6J24A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J24A-M3/5A.pdf
- Description:
- TVS DIODE 24VWM 37.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,370
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA6J24A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, with 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR at IT = 1 mA), and 37.8 V maximum clamping voltage (VC) at 15.9 A IPP (10/1000 μs). It delivers 600 W peak pulse power (10/1000 μs), operates from –55 °C to +150 °C, and protects MOSFETs and ICs against inductive switching transients in industrial power supplies.
For engineers reviewing the SMA6J24A-M3/5A datasheet, SMA6J24A-M3/5A pinout, SMA6J24A-M3/5A application, or SMA6J24A-M3/5A equivalent, key selection criteria include clamping voltage margin vs. protected device's absolute maximum rating, unidirectional polarity compatibility with DC-biased lines, thermal resistance (RθJA = 120 °C/W), and halogen-free RoHS-compliant M3 suffix for industrial-grade reliability.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias (≤24 V), it presents <0.2 μA leakage; during transient overvoltage exceeding 26.7 V, it avalanches to clamp the line at ≤37.8 V within nanoseconds. Its dynamic resistance (RD = 0.523 Ω) ensures predictable clamping behavior across surge currents.
Designed for PCB-level protection of DC power rails and signal paths, SMA6J24A-M3/5A uses a planar junction structure in an SMA package with matte tin-plated leads, rated MSL Level 1 (260 °C reflow), and meets UL 94 V-0 flammability. It is not intended for bidirectional AC-line protection or repetitive surge duty beyond its 4 W steady-state dissipation limit at TA = 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected circuit's nominal DC rail. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Confirmed avalanche onset range; defines minimum overvoltage threshold for clamping activation. |
| VC @ IPP | 37.8 V at 15.9 A (10/1000 μs) - Measured clamping voltage under standard surge; must be below protected device's absolute max rating. |
| PPPM (10/1000 μs) | 600 W - Peak transient energy handling capability; determines survivability against common inductive load-switching events. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard 5.0 mm × 5.0 mm copper pads; used to calculate ΔT rise under sustained power. |
| Polarity | Unidirectional - Cathode-band marked; suitable only for DC or single-polarity signal lines, not AC or bidirectional buses. |
| IFSM | 50 A - Non-repetitive forward surge current rating; relevant for accidental reverse-connection fault scenarios. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with UL 94 V-0 rating, matte tin-plated leads, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient current sink path | Connected to protected line's lower-potential side (e.g., GND or return); completes clamping path during overvoltage. |
| Cathode | Reverse-biased terminal / clamping reference node | Marked with band; connected to protected line's higher-potential side (e.g., 24 V rail); avalanche conduction occurs here during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | M3 suffix confirms compliance with JEDEC JESD201 Class 2 whisker resistance and environmental regulations for industrial deployment. |
| MSL Level 1 moisture sensitivity | Rated for floor life unlimited at ≤30 °C/85 % RH; supports standard SMT reflow without baking preconditioning. |
| Low dynamic resistance (RD) | 0.523 Ω enables tight clamping voltage control across varying surge currents-critical for protecting low-voltage tolerant ICs. |
| High-temperature operation | 150 °C max junction temperature allows use in enclosed power supplies or motor drive environments with elevated ambient. |
| Standardized SMA footprint | DO-214AC outline ensures compatibility with automated pick-and-place equipment and widely adopted PCB land patterns. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 24 V DC input rail in programmable logic controller (PLC) power stage exposed to relay coil flyback and contact arcing. IC Role / Device Role / Timing Role: Unidirectional shunt TVS diode clamping transient spikes to protect downstream DC-DC converters and microcontrollers. Use Value: 37.8 V clamping voltage stays safely below 40 V absolute max rating of typical 24 V-input buck controllers, preventing latch-up or gate oxide damage. | Use Scenario: LIN bus transceiver power line in BCM subjected to load dump and jump-start surges per ISO 7637-2 Pulse 1/2. IC Role / Device Role / Timing Role: Primary overvoltage suppressor on VCC rail, placed upstream of linear regulators feeding LIN PHY and MCU. Use Value: 600 W (10/1000 μs) rating handles standardized test pulses; M3 halogen-free construction meets automotive material compliance requirements. |
| Telecom Remote Radio Unit (RRU) | Consumer Appliance Motor Drive Board |
Use Scenario: 24 V auxiliary supply in outdoor RRU enclosure subject to lightning-induced surges on power feed lines. IC Role / Device Role / Timing Role: First-stage clamping device on DC input, coordinated with upstream MOVs and downstream π-filters. Use Value: 150 °C TJ max and 120 °C/W RθJA allow reliable operation in sealed, high-ambient enclosures without forced cooling. | Use Scenario: H-bridge gate driver supply rail in washing machine main board, exposed to back-EMF from brushed motor commutation. IC Role / Device Role / Timing Role: Localized rail protection adjacent to half-bridge drivers, minimizing trace inductance in clamping path. Use Value: SMA package enables compact placement near driver ICs; 50 A IFSM withstands accidental short-circuit fault currents during startup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J24A-E3/5A | Same electrical specs; RoHS-compliant but not halogen-free; E3 suffix indicates standard tin plating without JESD201 Class 2 whisker testing. | Approved for commercial/industrial use where halogen-free requirement is not mandated; lower cost alternative. | Select when halogen-free compliance is not required and whisker resistance is not critical for long-term field reliability. |
| SMCJ24A-M3 | Higher 1500 W PPPM (10/1000 μs); larger SMC (DO-214AB) package; same VWM/VBR/VC ratings; identical M3 halogen-free spec. | Suitable for higher-energy surge environments (e.g., factory automation mains inputs); requires larger PCB area and different land pattern. | Choose when system-level surge testing exceeds 600 W and layout allows SMC footprint; retains same material compliance and thermal profile per watt. |
Compared with SMA6J24A-E3/5A, the M3 version adds halogen-free assurance and whisker resistance for harsh environments; compared with SMCJ24A-M3, SMA6J24A-M3/5A offers space-constrained designs with adequate 600 W protection for point-of-load DC rails.
Availability
SMA6J24A-M3/5A is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, telecom remote radio units, and consumer appliance motor drives requiring stable component supply and halogen-free compliance.
Supply support for SMA6J24A-M3/5A 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 performance.
SMA6J24A-M3/5A belongs to Vishay's TRANSZORB® family of transient voltage suppressors, engineered specifically for robust, low-inductance PCB-level protection of DC power and signal lines in industrial, automotive, and telecom infrastructure.
FAQ
What is the maximum clamping voltage of SMA6J24A-M3/5A under a 10/1000 μs surge?
The maximum clamping voltage (VC) of SMA6J24A-M3/5A is 37.8 V at 15.9 A peak pulse current (IPP) under a 10/1000 μs waveform. This value is measured and guaranteed per Vishay's datasheet (Document Number: 89460, Rev. 09-Jan-2024), and represents the upper voltage limit imposed on the protected line during such a transient event. Designers must verify that this clamping level remains below the absolute maximum rating of downstream components in the SMA6J24A-M3/5A-protected circuit.
Does SMA6J24A-M3/5A support bidirectional transient suppression?
No, SMA6J24A-M3/5A is a unidirectional TVS diode and does not provide symmetrical clamping for AC or bipolar transients. Its design supports only reverse-biased avalanche conduction-clamping occurs when voltage at the cathode exceeds the breakdown threshold relative to the anode. For bidirectional protection (e.g., data lines or AC rails), a separate bidirectional part such as SMBJ24CA or a dual-diode configuration is required. The SMA6J24A-M3/5A datasheet explicitly states "Available in unidirectional polarity only."
What does the "M3" suffix indicate in SMA6J24A-M3/5A?
"M3" denotes halogen-free, RoHS-compliant construction with matte tin-plated leads qualified to JESD201 Class 2 whisker resistance. It also signifies industrial-grade qualification and compliance with Vishay's material categorization standard (www.vishay.com/doc?99912). Unlike the E3 variant, M3 ensures long-term reliability in high-humidity or thermally cycled environments where tin whisker growth could cause latent shorts. This specification is confirmed in the Mechanical Data section of the SMA6J24A-M3/5A datasheet.
Can SMA6J24A-M3/5A be used in place of SMA6J24A-E3/5A without layout changes?
Yes-SMA6J24A-M3/5A and SMA6J24A-E3/5A share identical SMA (DO-214AC) package dimensions, pinout, and solder pad requirements. Both use the same 5A tape-and-reel packaging format and are drop-in replacements electrically. However, the M3 version adds halogen-free content and JESD201 Class 2 whisker resistance, making it suitable for stricter environmental compliance mandates. No PCB redesign is needed when upgrading from E3 to M3.
What is the thermal resistance and power derating behavior of SMA6J24A-M3/5A?
SMA6J24A-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. Its steady-state power dissipation (PD) is rated at 4.0 W at TA = 50 °C and derates linearly above that temperature, reaching zero at 150 °C junction temperature. This derating curve is defined in Figure 2 of the SMA6J24A-M3/5A datasheet and must be applied when estimating safe continuous power handling in thermally constrained layouts.
SMA6J24A-M3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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:
- 37.8V
- Current - Peak Pulse (10/1000µs):
- 15.9A
- Power - Peak Pulse:
- 600W
- 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-214AC (SMA)
SMA6J24A-M3/5A FAQ
1.How can I place an order for SMA6J24A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J24A-M3/5A 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 SMA6J24A-M3/5A reliable?
The price and inventory of SMA6J24A-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J24A-M3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J24A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J24A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J24A-M3/5A?
SMA6J24A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J24A-M3/5A 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 SMA6J24A-M3/5A?
For technical support, including SMA6J24A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J24A-M3/5A requirements.
6.How does Aetrix verify that SMA6J24A-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J24A-M3/5A 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 SMA6J24A-M3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J24A-M3/5A?
All SMA6J24A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J24A-M3/5A, 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 SMA6J24A-M3/5A part is unused and in its original packaging.
Return procedure for SMA6J24A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA6J24A-M3/5A 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 …
