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Vishay General Semiconductor - Diodes Division SMAJ130CAHM3/H
- Part No.:
- SMAJ130CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ130CAHM3/H.pdf
- Description:
- TVS DIODE 130VWM 209VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,351
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Product details
Overview
SMAJ130CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal or power lines. It features a 130 V standoff voltage (VWM), 144–159 V breakdown voltage (VBR) at 1 mA, 209 V maximum clamping voltage (VC) at 1.4 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 μs waveform), commonly deployed to protect MOSFETs and sensor interfaces in automotive ECUs.
For engineers reviewing the SMAJ130CAHM3/H datasheet, SMAJ130CAHM3/H pinout, SMAJ130CAHM3/H application, or SMAJ130CAHM3/H equivalent, key selection criteria include bidirectional surge clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: during transient overvoltage events exceeding VWM (130 V), it avalanches into low-impedance conduction to divert surge current away from downstream circuitry. Its bidirectional symmetry ensures identical clamping behavior for positive and negative polarity surges.
It delivers 400 W peak pulse power (10/1000 μs) up to 78 V and 300 W above that threshold, with a maximum clamping voltage of 209 V at 1.4 A IPPM - enabling robust protection of 130 V-rated systems against ISO 7637-2 pulse 1/2a/5a and IEC 61000-4-5 surges. The glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ps).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 130 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 144 V / 159 V at 1 mA - guaranteed avalanche onset range defining turn-on consistency |
| VC @ IPPM | 209 V at 1.4 A - clamped voltage seen by protected circuit during worst-case 10/1000 μs surge |
| PPPM | 400 W (≤78 V), 300 W (>78 V) - peak transient energy handling per JEDEC standard waveform |
| ID @ VWM | ≤1.0 μA - ultra-low leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +150 °C - enables operation in under-hood automotive environments and industrial enclosures |
| RθJA | 120 °C/W - thermal performance baseline for PCB pad layout design (0.2" × 0.2" copper) |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C reflow peak), matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (bidirectional) | One terminal of symmetrical PN junction; no polarity marking required for CA devices |
| Cathode | Transient current sink (bidirectional) | Second terminal of symmetrical PN junction; functionally identical to Anode in bidirectional mode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 400 W peak pulse power | Withstands high-energy transients typical of load dump and inductive switching in 12 V/24 V systems |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot across protected ICs, reducing risk of gate oxide damage in MOSFETs |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns or baking requirements |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets automotive environmental compliance mandates and end-of-life recycling requirements |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 130 V-rated DC-DC converter inputs in vehicle body control modules against ISO 7637-2 load dump pulses. IC Role / Device Role / Timing Role: Shunt TVS diode placed directly across input terminals to clamp transients before they reach primary switching FETs. Use Value: Limits peak voltage to ≤209 V during 100 V/100 ms load dump, preventing overvoltage failure of 150 V-rated MOSFETs. |
Use Scenario: Safeguarding analog output lines of pressure sensors in factory automation PLC I/O modules exposed to relay coil kickback. IC Role / Device Role / Timing Role: Bidirectional clamping element on 4–20 mA current loop outputs to suppress ±1 kV/50 Ω transients. Use Value: Maintains signal fidelity with <1.0 μA leakage at 130 V, avoiding offset errors in precision current-sense circuits. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Inputs |
Use Scenario: Front-end protection for PoE-powered Ethernet switch line cards subjected to lightning-induced surges on data pairs. IC Role / Device Role / Timing Role: Secondary-level TVS placed after gas discharge tube (GDT) to handle residual fast-rising transients. Use Value: Sub-nanosecond response time ensures clamping before GDT arc-over completes, limiting let-through voltage to safe levels. |
Use Scenario: Input rail protection in smart washing machine motor inverters where brushless DC drivers face back-EMF spikes during commutation. IC Role / Device Role / Timing Role: Parallel-connected TVS on 130 V DC bus to absorb repetitive 300 W inductive energy spikes. Use Value: 300 W rating above 78 V supports sustained surge handling during frequent motor start-stop cycles without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ130CAHE3/H | Same electrical specs; RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification | Suitable for commercial/industrial use only; not approved for automotive under-hood deployment | Select when halogen-free content is not mandated and automotive qualification is unnecessary |
| SMBJ130CAHM3 | Same VWM/VBR/VC ratings; SMB (DO-214AA) package - 2.5 mm wider, higher RθJA (140 °C/W) | Requires larger PCB footprint; lower thermal efficiency limits sustained surge duty cycle | Choose only if existing layout uses SMB package and thermal derating is acceptable |
Compared with SMAJ130CAHM3/H, the HE3/H variant trades halogen-free construction and AEC-Q101 validation for cost reduction in non-automotive settings, while SMBJ130CAHM3 sacrifices board space efficiency and thermal performance for marginally higher surge current tolerance due to larger junction area.
Availability
SMAJ130CAHM3/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMAJ130CAHM3/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 protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMAJ series is engineered specifically for high-reliability transient suppression in harsh environments - targeting automotive powertrain, ADAS, and industrial control applications where consistent clamping and AEC-Q101 validation are mandatory.
FAQ
What does the 'HM3' suffix indicate in SMAJ130CAHM3/H?
The HM3 suffix in SMAJ130CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms compliance with automotive environmental standards and reliability testing including temperature cycling, highly accelerated life testing (HALT), and electrostatic discharge (ESD) immunity per AEC-Q101 Rev D. This makes SMAJ130CAHM3/H suitable for under-hood and safety-critical vehicle subsystems.
Is SMAJ130CAHM3/H unidirectional or bidirectional?
SMAJ130CAHM3/H is a bidirectional Transient Voltage Suppressor, as indicated by the 'CA' suffix. It provides symmetrical clamping for both positive and negative voltage transients without polarity dependence. Unlike unidirectional variants (e.g., SMAJ130A), SMAJ130CAHM3/H has no cathode band marking and functions identically in either orientation on the PCB.
What is the maximum clamping voltage of SMAJ130CAHM3/H and at what current is it specified?
The maximum clamping voltage (VC) of SMAJ130CAHM3/H is 209 V, measured at a peak pulse current (IPPM) of 1.4 A using a 10/1000 μs waveform. This value represents the upper limit of voltage imposed on protected circuitry during standardized surge events and is critical for ensuring downstream components - such as 150 V-rated MOSFETs - remain within safe operating limits when SMAJ130CAHM3/H is active.
Can SMAJ130CAHM3/H be used in place of SMAJ130A in an existing design?
No - SMAJ130CAHM3/H is bidirectional while SMAJ130A is unidirectional, so direct substitution requires verification of circuit polarity and transient directionality. SMAJ130A has a cathode band and conducts only in reverse bias; replacing it with SMAJ130CAHM3/H may cause unintended conduction paths or fail to suppress certain transient polarities. Layout review and functional validation are essential before interchange.
What PCB pad layout is recommended for optimal thermal performance of SMAJ130CAHM3/H?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad for each terminal of SMAJ130CAHM3/H to achieve the rated RθJA of 120 °C/W. Using smaller pads increases thermal resistance, reducing surge current handling and accelerating junction temperature rise during repetitive transients. For automotive applications, internal ground/power planes connected via multiple vias beneath the pads further improve heat dissipation and reliability of SMAJ130CAHM3/H.
SMAJ130CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ130CAHM3/H FAQ
1.How can I place an order for SMAJ130CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ130CAHM3/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 SMAJ130CAHM3/H reliable?
The price and inventory of SMAJ130CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ130CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMAJ130CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ130CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ130CAHM3/H?
SMAJ130CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ130CAHM3/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 SMAJ130CAHM3/H?
For technical support, including SMAJ130CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ130CAHM3/H requirements.
6.How does Aetrix verify that SMAJ130CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMAJ130CAHM3/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 SMAJ130CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMAJ130CAHM3/H?
All SMAJ130CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ130CAHM3/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 SMAJ130CAHM3/H part is unused and in its original packaging.
Return procedure for SMAJ130CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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