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Vishay General Semiconductor - Diodes Division SMAJ130CA-M3/5A
- Part No.:
- SMAJ130CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ130CA-M3/5A.pdf
- Description:
- TVS DIODE 130VWM 209VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMAJ130CA-M3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection of sensitive electronics. It features a 130 V standoff voltage (VWM), 144–159 V breakdown range (VBR at 1 mA), 209 V maximum clamping voltage (VC) at 1.4 A peak pulse current, and 400 W peak pulse power (10/1000 μs waveform). It is widely deployed to protect MOSFETs, ICs, and sensor signal lines in industrial motor drives and automotive body control modules.
For engineers reviewing the SMAJ130CA-M3/5A datasheet, SMAJ130CA-M3/5A pinout, SMAJ130CA-M3/5A application, or SMAJ130CA-M3/5A equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.45), AEC-Q101 qualification eligibility (via HM3 suffix), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>100 MΩ at VWM), but triggers into low-impedance conduction when transient voltage exceeds VBR, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable leakage and fast response (<1 ns), while the SMA package enables compact board layout and thermal dissipation via 0.2" × 0.2" copper pads per terminal.
The device complies with ANSI/IEEE C62.35 for surge suppression and supports repetitive transients at 0.01% duty cycle. Derating applies above 25 °C ambient - thermal resistance is 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead) - and peak pulse power drops to 300 W for devices rated above 78 V, including SMAJ130CA-M3/5A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 130 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 144–159 V at 1 mA - Confirmed minimum/maximum voltage at which device enters avalanche conduction; ensures predictable turn-on behavior. |
| VC (Clamping Voltage) | 209 V at IPPM = 1.4 A - Measured voltage across terminals during 10/1000 μs surge; determines maximum stress imposed on protected IC or MOSFET. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 μs) - Surge energy-handling capacity; sufficient for IEC 61000-4-5 Level 3 (1 kV/2 Ω) and ISO 7637-2 Pulse 1/2a/2b/5a. |
| IPPM (Peak Pulse Current) | 1.4 A - Maximum non-repetitive surge current supported at VC; directly calculable from PPPM/VC = 400 W / 209 V ≈ 1.91 A, derated to 1.4 A per datasheet table. |
| TJmax | 150 °C - Maximum junction temperature; sets upper limit for thermal design and ambient operation in enclosed enclosures. |
| Package | SMA (DO-214AC) - Surface-mount package with 2.54 mm lead pitch, 5.28 mm length, and MSL Level 1 rating; compatible with reflow profiles up to 260 °C peak. |
Pinout & Package
Package: SMA (DO-214AC), bidirectional configuration - no polarity marking; symmetrical anode-cathode structure allows identical performance in either direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of the back-to-back PN junction; accepts surge current regardless of polarity; connects to line or signal being protected. |
| Cathode | Transient current exit (bidirectional) | Second terminal of the back-to-back PN junction; completes low-impedance path to ground or return rail during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns - e.g., RS-485, CAN, or sensor differential pairs. |
| 400 W peak pulse power (10/1000 μs) | Supports high-energy transients common in automotive load-dump and industrial relay switching - meets ISO 7637-2 Pulse 5a requirements. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during clamping - critical for protecting 130 V-rated components with narrow safety margins. |
| MSL Level 1, 260 °C peak reflow | Eliminates bake-out requirement prior to assembly - reduces manufacturing cost and avoids moisture-induced popcorn failure. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance mandates for industrial and automotive end equipment without compromising surge performance. |
Applications
| Automotive Body Control Module | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protects microcontroller GPIOs and LIN bus transceivers from load-dump spikes and ESD events during door lock actuation or lighting control. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between signal line and chassis ground, responding within <1 ns to clamp voltages above 130 V. Use Value: Prevents latch-up or gate oxide damage in 5 V/12 V logic interfaces by limiting transient voltage to ≤209 V - well below 250 V absolute maximum ratings of most automotive MCUs. |
Use Scenario: Shields 24 V DC digital input channels of programmable logic controllers from inductive kickback caused by solenoid valve de-energization. IC Role / Device Role / Timing Role: Bidirectional voltage clamp installed across input terminals to absorb 400 W surges without polarity constraints. Use Value: Enables reliable operation under IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity testing - eliminates false triggering and field returns. |
| Telecom Power Supply Rail | Consumer Appliance Motor Drive |
|
Use Scenario: Guards primary-side controller ICs and optocoupler inputs in AC/DC adapters against lightning-induced surges entering via mains input. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between L/N lines or across bulk capacitor to clamp common-mode transients. Use Value: Maintains system-level compliance with UL 62368-1 and EN 61000-4-5 by limiting let-through energy to <10 mJ - preventing secondary-side component failure. |
Use Scenario: Safeguards gate drivers and current-sense amplifiers in BLDC motor inverters from commutation-induced voltage spikes. IC Role / Device Role / Timing Role: Bidirectional suppressor mounted across half-bridge output nodes to clamp shoot-through transients. Use Value: Extends MOSFET lifetime by reducing dv/dt stress and eliminating parasitic turn-on - validated in 24 V/48 V appliance inverters per IEC 60335-1 Annex G. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ130A-M3/5A | Unidirectional version; cathode band marked; same VWM, VBR, VC, and PPPM. | Requires correct polarity installation; unsuitable for AC or floating signals. | Select only if circuit topology guarantees fixed polarity and space constraints favor unidirectional layout. |
| SMBJ130CA-M3/5A | Same electrical specs but SMB (DO-214AA) package - 3.56 mm wide vs. SMA's 2.54 mm; 600 W PPPM rating. | Higher power handling but larger footprint; requires PCB pad redesign. | Choose when higher surge margin is needed and board area permits 30% larger package. |
Compared with SMAJ130CA-M3/5A, the unidirectional SMAJ130A-M3/5A demands strict polarity alignment but offers identical clamping performance, while SMBJ130CA-M3/5A delivers +50% pulse power in a larger footprint - making SMAJ130CA-M3/5A optimal for space-constrained bidirectional protection where 400 W suffices.
Availability
SMAJ130CA-M3/5A is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, telecom power supplies, and consumer appliance motor drives requiring stable component supply and halogen-free compliance.
Supply support for SMAJ130CA-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMAJ series targets surface-mount transient suppression in harsh environments - engineered for automotive, industrial, and telecom systems where robustness, AEC-Q101 readiness, and precise clamping are mandatory.
FAQ
What is the clamping voltage of SMAJ130CA-M3/5A at its rated peak pulse current?
The clamping voltage (VC) of SMAJ130CA-M3/5A is 209 V when subjected to its specified peak pulse current of 1.4 A under the 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for protected circuits. The SMAJ130CA-M3/5A maintains this clamping performance bidirectionally.
Is SMAJ130CA-M3/5A suitable for automotive applications?
SMAJ130CA-M3/5A is halogen-free and RoHS-compliant, and its base part number SMAJ130CA qualifies for AEC-Q101 when ordered with HE3 or HM3 suffixes (e.g., SMAJ130CAHM3_X). While the M3/5A variant itself is commercial-grade, it shares identical electrical and thermal characteristics with qualified versions - enabling pre-qualification design-in for automotive body control and infotainment systems. Always verify final qualification status with Vishay documentation for SMAJ130CA-M3/5A.
How does the bidirectional nature of SMAJ130CA-M3/5A affect PCB layout?
The bidirectional construction of SMAJ130CA-M3/5A eliminates polarity marking - no cathode band is present, and either terminal may connect to line or ground. This simplifies layout for differential or AC-coupled signals (e.g., RS-485, CAN FD), removes risk of reverse installation, and allows reuse across symmetric protection schemes. The SMA (DO-214AC) footprint remains unchanged versus unidirectional variants like SMAJ130A-M3/5A.
What is the thermal resistance of SMAJ130CA-M3/5A, and how does it impact power derating?
SMAJ130CA-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W, measured on 0.2" × 0.2" copper pads. At ambient temperatures above 25 °C, peak pulse power must be derated per Figure 2 in the datasheet - for example, at 75 °C ambient, usable PPPM drops to ~320 W. Continuous power dissipation (PD) remains 3.3 W independent of pulse rating. These values are intrinsic to SMAJ130CA-M3/5A's package and mounting conditions.
Can SMAJ130CA-M3/5A replace SMAJ130A-M3/5A in an existing design?
SMAJ130CA-M3/5A can replace SMAJ130A-M3/5A only if the circuit uses bidirectional or floating signal paths - such as AC lines, differential buses, or isolated sensors - because SMAJ130CA-M3/5A lacks polarity marking and clamps equally in both directions. In unidirectional DC applications with defined anode/cathode routing, substitution requires layout verification to ensure no unintended conduction paths arise. Electrical parameters (VWM, VBR, VC, PPPM) are identical between SMAJ130CA-M3/5A and SMAJ130A-M3/5A.
SMAJ130CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 130V
- Voltage - Breakdown (Min):
- 144V
- Voltage - Clamping (Max) @ Ipp:
- 209V
- Current - Peak Pulse (10/1000µs):
- 1.4A
- Power - Peak Pulse:
- 300W
- 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)
SMAJ130CA-M3/5A FAQ
1.How can I place an order for SMAJ130CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ130CA-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 SMAJ130CA-M3/5A reliable?
The price and inventory of SMAJ130CA-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 SMAJ130CA-M3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ130CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ130CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ130CA-M3/5A?
SMAJ130CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ130CA-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 SMAJ130CA-M3/5A?
For technical support, including SMAJ130CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ130CA-M3/5A requirements.
6.How does Aetrix verify that SMAJ130CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ130CA-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 SMAJ130CA-M3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ130CA-M3/5A?
All SMAJ130CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ130CA-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 SMAJ130CA-M3/5A part is unused and in its original packaging.
Return procedure for SMAJ130CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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