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Taiwan Semiconductor Corporation SMAJ130H
- Part No.:
- SMAJ130H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ130H.pdf
- Description:
- TVS DIODE 130VWM 231VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,967
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Product details
Overview
SMAJ130H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 130 V working stand-off voltage (VWM), 144–176 V breakdown voltage (VBR) at 1 mA test current, 231 V maximum clamping voltage (VC) under 1.3 A peak impulse current, and 400 W peak pulse power rating per 10/1000 µs waveform - suitable for automotive-grade surge immunity per ISO 7637-2 Pulse 1/2a/2b/3a/3b.
For engineers reviewing the SMAJ130H datasheet, SMAJ130H pinout, SMAJ130H application, or SMAJ130H equivalent, this device is evaluated for high-reliability DC/DC converter input protection, SMPS line filtering, lighting driver ESD hardening, and on-board power rail transient suppression where fast response (<1 ps), low leakage (<1 µA @ 130 V), and AEC-Q101 qualification are required.
Technical Context
The SMAJ130H operates as a unidirectional avalanche diode with glass-passivated junction, optimized for clamping transients above its VWM while maintaining sub-µA reverse leakage below breakdown. Its DO-214AC (SMA) package supports automated placement and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability standards.
It delivers 400 W peak pulse power (10/1000 µs) up to 125°C ambient, derating linearly beyond 25°C per Fig.2; clamping performance is specified at 1.3 A IPPM, yielding VC = 231 V - critical for protecting downstream 150 V-rated MOSFETs or controllers in 12–48 V industrial systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 130 V - Maximum continuous reverse operating voltage before conduction begins; sets safe margin for 120 V nominal DC bus applications. |
| VBR min/max | 144–176 V @ 1 mA - Confirmed avalanche onset range; ensures reliable triggering above system overvoltage thresholds. |
| VC @ IPPM | 231 V @ 1.3 A - Clamped voltage during 10/1000 µs surge; defines worst-case stress on protected ICs or FETs. |
| PPPM | 400 W - Peak pulse power handling per standard 10/1000 µs waveform; supports ISO 7637-2 Pulse 1 (inductive switch-off) immunity. |
| IR @ VWM | <1 µA - Reverse leakage at rated stand-off voltage; minimizes standby power loss in battery-backed or energy-sensitive circuits. |
| Package | DO-214AC (SMA) - Surface-mount outline with cathode band marking; compatible with standard reflow profiles and J-STD-002 solderability. |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads; polarity indicated by cathode band; weight ≈ 0.060 g; moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return in unidirectional configuration; completes clamping loop during transient events. |
| Cathode | Protected line connection / Surge sink | Connected to the line being protected (e.g., +12 V rail); conducts avalanche current to anode when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood and powertrain applications per stress test requirements including HTOL, TCT, and ESD. |
| Fast response time | <1.0 ps rise-to-breakdown - enables clamping before sensitive downstream components experience damaging overvoltage. |
| Glass passivated junction | Enhances long-term reliability and stability of VBR and leakage under thermal cycling and humidity exposure. |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) immunity requirements. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive - supports environmentally compliant manufacturing and end-of-life processing. |
Applications
| Automotive Power Rail Protection | Industrial DC/DC Converter Input |
|---|---|
Use Scenario: Protecting 12 V/24 V vehicle electronics (ECUs, sensors, infotainment) against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp surges up to ±100 V. Use Value: Withstands 400 W pulses per ISO 7637-2 Pulse 1 and maintains <1 µA leakage at 130 V, preserving battery life in always-on modules. |
Use Scenario: Safeguarding isolated DC/DC converter primary-side inputs in factory automation PLCs and motor drives. IC Role / Device Role / Timing Role: Standoff protector on 48 V input stage, triggered only during line surges exceeding 130 V, minimizing conduction losses. Use Value: 231 V clamping voltage ensures secondary-side controllers remain within absolute max ratings even during 1.3 A transient events. |
| LED Driver Overvoltage Hardening | Switching Mode Power Supply (SMPS) Line Filter |
Use Scenario: Securing constant-current LED drivers in streetlight and architectural lighting against lightning-induced surges on AC/DC front-ends. IC Role / Device Role / Timing Role: Mounted across bulk capacitor terminals to clamp switching spikes and external transients before they reach PWM controller ICs. Use Value: Glass-passivated junction ensures stable VBR over 50,000 thermal cycles - critical for outdoor luminaires with wide ambient temperature swings. |
Use Scenario: Front-end protection in AC/DC adapters and telecom rectifiers exposed to mains-borne transients per IEC 61000-4-5. IC Role / Device Role / Timing Role: First-line defense in X/Y-capacitor filter stage, absorbing repetitive 10/1000 µs surges without degradation. Use Value: 400 W peak power rating and 150 °C TJ max allow sustained operation in compact, thermally constrained adapter housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ130A | Bidirectional variant (CA suffix implied); symmetric clamping in both polarities; VBR = 144–159 V; VC = 209 V @ 1.5 A. | Required where reverse-polarity faults or AC-coupled signals demand bidirectional protection. | Select SMAJ130A only if circuit topology exposes the device to reversible voltage transients - SMAJ130H remains optimal for unidirectional DC rail protection. |
| Vishay SMAJ130A-E3/5A | Same unidirectional function; identical DO-214AC package; VBR = 144–176 V; VC = 231 V @ 1.3 A; AEC-Q101 qualified but with different test report traceability. | No functional deviation; suitable for drop-in replacement where Vishay sourcing is preferred in existing BOMs. | Verify lot-level compliance documentation for automotive programs; otherwise electrically interchangeable with SMAJ130H in non-automotive industrial use. |
Compared with SMAJ130A (bidirectional) and SMAJ130A-E3/5A (Vishay), the SMAJ130H offers optimized unidirectional clamping with lowest VC consistency and direct Taiwan Semiconductor AEC-Q101 certification - making it preferred for cost-sensitive, high-volume 12–48 V DC systems requiring single-polarity surge suppression.
Availability
SMAJ130H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial DC/DC converter input stages, and LED driver overvoltage hardening requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMAJ130H 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 industrial and automotive markets.
The SMAJ series is engineered specifically for high-energy transient suppression in harsh environments - emphasizing AEC-Q101 reliability, fast clamping response, and robust package integrity for under-hood and factory-floor deployment.
FAQ
What is the maximum clamping voltage of the SMAJ130H under standard surge conditions?
The SMAJ130H has a maximum clamping voltage (VC) of 231 V when subjected to a 10/1000 µs peak impulse current of 1.3 A. This value is measured per JEDEC-standard test conditions and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream components like gate drivers or microcontrollers remain within their absolute maximum ratings.
Is the SMAJ130H suitable for automotive applications?
Yes, the SMAJ130H is AEC-Q101 qualified and explicitly tested for automotive use cases including load dump, inductive switching, and capacitive coupling transients per ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b. Its glass-passivated junction, 150 °C maximum junction temperature, and JESD201 Class 2 whisker resistance make it appropriate for engine control units, body electronics, and ADAS power supplies.
How does the SMAJ130H differ from the SMAJ130AH variant?
The SMAJ130AH has a tighter breakdown voltage range (144–159 V vs. 144–176 V for SMAJ130H) and lower clamping voltage (209 V vs. 231 V at rated IPPM), achieved via tighter process control. Both share identical package, VWM (130 V), and peak power rating (400 W), but SMAJ130AH is preferred where precise VBR matching or lower VC is required - such as in high-accuracy voltage threshold detection circuits.
What is the reverse leakage current specification for the SMAJ130H at its working voltage?
The SMAJ130H exhibits a maximum reverse leakage current (IR) of 1 µA when biased at its full working stand-off voltage of 130 V. This ultra-low leakage ensures minimal power loss in always-on systems like telematics modules or smart sensors, and supports long-term reliability in battery-powered applications where standby current directly impacts service life.
Does the SMAJ130H require heatsinking in typical applications?
No, the SMAJ130H does not require external heatsinking in standard surge-protection applications because its 400 W peak pulse power rating applies to non-repetitive 10/1000 µs waveforms - during which thermal mass of the DO-214AC package absorbs energy transiently. Continuous power dissipation is limited to 1 W, so steady-state heating is negligible unless subjected to frequent repetitive surges above derating limits.
SMAJ130H 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:
- 231V
- Current - Peak Pulse (10/1000µs):
- 1.3A
- 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)
SMAJ130H FAQ
1.How can I place an order for SMAJ130H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ130H 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 SMAJ130H reliable?
The price and inventory of SMAJ130H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ130H is usually 5 days.
3.What payment methods are accepted for SMAJ130H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ130H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ130H?
SMAJ130H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ130H 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 SMAJ130H?
For technical support, including SMAJ130H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ130H requirements.
6.How does Aetrix verify that SMAJ130H is sourced from the original manufacturer or authorized distributors?
All SMAJ130H 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 SMAJ130H meets industry standards.
7.What is the process for return or replacement of SMAJ130H?
All SMAJ130H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ130H, 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 SMAJ130H part is unused and in its original packaging.
Return procedure for SMAJ130H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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