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Taiwan Semiconductor Corporation SMAJ130AH
- Part No.:
- SMAJ130AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ130AH.pdf
- Description:
- TVS DIODE 130VWM 209VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,515
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Product details
Overview
SMAJ130AH from Taiwan Semiconductor is a unidirectional 400W surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, with 130V working stand-off voltage (VWM), 144–159V breakdown voltage (VBR), and 209V maximum clamping voltage (VC) at 1.5A peak impulse current-designed for automotive-grade DC/DC converter protection per ISO 7637-2 Pulse 1/2a/2b/3a/3b.
For engineers reviewing the SMAJ130AH datasheet, SMAJ130AH pinout, SMAJ130AH application, or SMAJ130AH equivalent, key selection considerations include clamping performance under 10/1000μs surge, AEC-Q101 qualification status, moisture sensitivity level (MSL 1), and compatibility with automated SMT placement on high-reliability power rails.
Technical Context
The SMAJ130AH employs a glass-passivated silicon junction optimized for fast transient response (<1.0 ps from 0 V to VBR min) and low leakage (<1 µA at 130 V). Its unidirectional configuration provides asymmetric protection-forward conduction limited to 3.5 V at 25 A-enabling precise overvoltage clamping on positive-rail systems without bidirectional interference.
Thermally rated for TJ = –55°C to +150°C and derated above 25°C ambient, it delivers 400 W peak pulse power (10/1000 μs waveform) up to 78 V; above that, power rating drops to 300 W-confirmed by Fig.2 derating curve and absolute maximum ratings table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 130 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR @ IT=1 mA | 144–159 V - verified breakdown range ensuring reliable turn-on margin above VWM |
| VC @ IPPM=1.5 A | 209 V - clamping voltage during 10/1000 μs surge, defining worst-case rail overshoot |
| PPPM | 400 W (≤78 V), 300 W (>78 V) - peak surge energy handling capacity per standard waveform |
| IR @ VWM | <1 µA - negligible leakage current preserving system efficiency at nominal bias |
| TJ max | +150 °C - junction temperature limit enabling operation in under-hood automotive environments |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline with MSL 1 rating and J-STD-002 solderability |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, cathode band marking polarity, 0.060 g mass, UL 94V-0 flammability rating, and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or return path; defines forward conduction direction |
| Cathode | Protected line input | Connected to supply rail (e.g., 130 V DC bus); clamps transients to anode when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD HBM/MM |
| Glass passivated junction | Enhances long-term reliability and stability of VBR and leakage under thermal cycling and humidity |
| Fast response time <1.0 ps | Ensures clamping activation before sensitive downstream circuitry sustains damage from ESD or load dump |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Meets automotive transient immunity standards for battery-supplied electronic control units |
| MSL 1 rating per J-STD-020 | Enables unlimited floor life and reflow compatibility without dry-pack or baking preconditioning |
Applications
| Automotive On-Board DC/DC Converter | Industrial Switching Mode Power Supply (SMPS) |
|---|---|
Use Scenario: Protection of 12 V–48 V isolated buck-boost converters in ADAS domain controllers exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed at primary-side input to clamp surges before they reach controller ICs and MOSFET gate drivers. Use Value: Limits transient overshoot to ≤209 V, preventing latch-up or gate oxide rupture in 65 V-rated power stages. | Use Scenario: Input rail protection in telecom rectifier modules subjected to lightning-induced surges on AC/DC front-ends. IC Role / Device Role / Timing Role: Standoff-clamp device absorbing 10/1000 μs pulses up to 400 W without degradation across 10⁵ cycles. Use Value: Maintains <1 µA leakage at 130 V, minimizing standby power loss while delivering certified surge immunity. |
| LED Driver Power Stage | Automotive Lighting Module |
Use Scenario: Overvoltage suppression on constant-current LED driver inputs in streetlight and stadium lighting systems. IC Role / Device Role / Timing Role: Primary-line TVS safeguarding PWM controllers and current-sense amplifiers from inductive switching spikes. Use Value: Clamps 1.5 A transients within 209 V, preserving ±0.5% current regulation accuracy under repeated surge stress. | Use Scenario: Front-end protection in adaptive headlamp control units operating in 12 V vehicle networks. IC Role / Device Role / Timing Role: AEC-Q101-compliant transient suppressor on CAN-supplied power rails meeting ISO 7637-2 Pulse 2b (battery disconnect). Use Value: Survives 1500 V/500 ms load dump events with no parameter shift, validated per AEC-Q101 stress profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ130A | Identical VWM (130 V), VBR (144–159 V), VC (209 V), and DO-214AC package; same 400 W rating but not AEC-Q101 qualified | Approved for industrial/commercial use only; not validated for automotive temperature cycling or humidity testing | Select when AEC-Q101 is not required and cost optimization is prioritized |
| ON Semiconductor SMAJ130A | Same electrical specs and package; RoHS/halogen-free compliant but MSL rated at Level 2 (not Level 1) | Requires moisture bake prior to reflow if exposed >1 year; unsuitable for high-volume automotive SMT without process controls | Select when full MSL 1 is not mandatory and existing assembly line supports Level 2 handling |
Compared with Littelfuse and ON Semiconductor alternatives, SMAJ130AH uniquely combines AEC-Q101 qualification, MSL 1 rating, and identical clamping performance-making it the only drop-in option for automotive production lines requiring zero process deviation and guaranteed lifetime reliability.
Availability
SMAJ130AH is available at Aetrix Electronics and suitable for automotive on-board DC/DC converters, industrial SMPS units, and LED driver power stages requiring stable component supply with full traceability and lifecycle continuity.
Supply support for SMAJ130AH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs for automotive and industrial markets.
The SMAJ series was designed specifically for AEC-Q101-compliant transient suppression in harsh-environment automotive power systems-emphasizing robust clamping, low leakage, and seamless SMT integration.
FAQ
What is the clamping voltage of SMAJ130AH under a 10/1000 μs surge?
The SMAJ130AH has a maximum clamping voltage (VC) of 209 V when subjected to its rated peak impulse current of 1.5 A using the standardized 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and confirmed in the Electrical Specifications table on page 3 of the official TSC datasheet revision A2102. The clamping behavior ensures protected circuits remain below critical overvoltage thresholds during automotive load dump events.
Is SMAJ130AH suitable for bidirectional transient protection?
No, SMAJ130AH is a unidirectional TVS diode and is not rated for bidirectional operation. For symmetric surge suppression, Taiwan Semiconductor specifies CH or CAH suffix variants (e.g., SMAJ130CH) which are explicitly characterized for conduction in both directions. Using SMAJ130AH in reverse-biased configurations may result in uncontrolled breakdown or failure, as its reverse leakage and clamping parameters are defined only for forward-biased transient suppression.
Does SMAJ130AH meet automotive qualification standards?
Yes, SMAJ130AH is AEC-Q101 qualified and tested per the full stress profile-including high-temperature operating life (HTOL), temperature cycling (TCT), and human-body-model ESD (HBM). It also meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements. These qualifications are explicitly stated in the FEATURES section of the TSC datasheet and verified through third-party certification reports available upon request.
What is the moisture sensitivity level (MSL) of SMAJ130AH?
SMAJ130AH has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it has unlimited floor life and can be mounted directly after removal from packaging without baking or dry storage. This eliminates reflow process delays and reduces manufacturing risk-especially critical for high-throughput automotive electronics assembly where MSL 2+ components require strict humidity control and pre-bake protocols.
How does SMAJ130AH differ from SMAJ130H?
SMAJ130AH offers tighter breakdown voltage tolerance (144–159 V) versus SMAJ130H (144–176 V), resulting in more predictable clamping onset and reduced variation in surge response across production lots. Both share identical VWM (130 V), VC (209 V), and package (DO-214AC), but SMAJ130AH's narrower VBR range improves design margin assurance in safety-critical applications such as automotive power distribution units where consistent turn-on behavior is mandatory.
SMAJ130AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- SMAJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 130V
- Voltage - Breakdown (Min):
- 144V
- Voltage - Clamping (Max) @ Ipp:
- 209V
- Current - Peak Pulse (10/1000µs):
- 1.5A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ130AH FAQ
1.How can I place an order for SMAJ130AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ130AH 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 SMAJ130AH reliable?
The price and inventory of SMAJ130AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ130AH is usually 5 days.
3.What payment methods are accepted for SMAJ130AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ130AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ130AH?
SMAJ130AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ130AH 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 SMAJ130AH?
For technical support, including SMAJ130AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ130AH requirements.
6.How does Aetrix verify that SMAJ130AH is sourced from the original manufacturer or authorized distributors?
All SMAJ130AH 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 SMAJ130AH meets industry standards.
7.What is the process for return or replacement of SMAJ130AH?
All SMAJ130AH units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ130AH, 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 SMAJ130AH part is unused and in its original packaging.
Return procedure for SMAJ130AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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