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Diodes Incorporated SMAJ150AQ-13-F
- Part No.:
- SMAJ150AQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ150AQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:5,824
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Product details
Overview
SMAJ150AQ-13-F from Diodes Incorporated is a unidirectional 400W surface-mount automotive transient voltage suppressor (TVS) diode with 150V reverse standoff voltage, 243V max clamping voltage at 1.6A peak pulse current, and AEC-Q101 qualification for under-hood engine control units, infotainment power rails, and CAN/LIN bus protection against ISO7637-2 Pulse 1/2a/3a/3b transients.
For engineers reviewing the SMAJ150AQ-13-F datasheet, SMAJ150AQ-13-F pinout, SMAJ150AQ-13-F application, or SMAJ150AQ-13-F equivalent, key selection criteria include clamping voltage margin vs. system rail, IPP derating above +25°C ambient, unidirectional polarity handling for DC-biased lines, and compliance with ISO10605 ESD (30kV air/contact) and IATF 16949 manufacturing traceability.
Technical Context
This TVS operates as a voltage-clamped shunt protector: when transient voltage exceeds 150V (VRWM), it avalanches at 167–185V (VBR), limiting downstream circuit voltage to ≤243V (VC) during 10×1000μs pulses. Its glass-passivated die ensures stable breakdown and low leakage (<0.5μA at VRWM).
Designed for automotive-grade reliability, it sustains 40A non-repetitive forward surge (IFSM, 8.3ms half-sine) and delivers 400W peak pulse power (PPK) at TA = +25°C, derating linearly to ~240W at +100°C per Figure 1. Thermal operation spans -55°C to +175°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - Sustains single 10×1000μs transients without failure in automotive load-dump or inductive switching events. |
| Reverse Standoff Voltage | 150V - Maximum continuous DC or RMS voltage before clamping initiates; sets minimum operating margin above 13.5V nominal battery. |
| Clamping Voltage | 243V @ IPP = 1.6A - Peak voltage seen by protected IC during standardized transient; defines overvoltage stress on downstream components. |
| Breakdown Voltage | 167–185V @ IT = 1.0mA - Confirmed avalanche onset range; ensures reliable triggering before VC is exceeded. |
| Leakage Current | <0.5μA @ VRWM - Negligible standby power loss and signal integrity impact on high-impedance sensor or communication lines. |
| AEC-Q101 Qualified | Validated for automotive use - Passes stress tests including HTOL, TC, UHAST, and ESD per AEC specification; supports PPAP documentation. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic UL 94V-0 housing, cathode band marking for unidirectional polarity, 0.064g weight, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path; completes clamping path during positive transients on cathode side. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 12V rail); conducts avalanche current to anode when voltage exceeds VRWM. |
Key Features
| Feature | Design Value |
|---|---|
| 400W peak pulse power | Enables robust protection against severe ISO7637-2 Pulse 1 (-100V) and Pulse 3a (-150V) without thermal runaway. |
| Glass-passivated die | Ensures stable VBR and low leakage across -55°C to +175°C; eliminates passivation-related drift in under-hood environments. |
| AEC-Q101 qualification | Confirms suitability for safety-critical automotive modules requiring change-controlled manufacturing in IATF 16949 facilities. |
| Lead-free, halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive ELV Directive; <900ppm Br, <900ppm Cl, <1000ppm Sb for eco-compliant assembly. |
Applications
| Engine Control Unit (ECU) Power Input | Infotainment System 12V Rail |
|---|---|
Use Scenario: Protection of microcontroller power supply against load dump transients up to -100V (ISO7637-2 Pulse 1) during alternator field decay. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between 12V input and chassis ground; clamps within 1ns to limit voltage to ≤243V. Use Value: Prevents latch-up or permanent damage to 5V/3.3V LDOs and MCU VDD pins during cold-crank or battery-disconnect events. |
Use Scenario: Guarding USB-C PD and HDMI power delivery lines against coupled surges from adjacent motor drivers or antenna systems. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12V auxiliary rail; responds to 10×1000μs transients per ISO7637-2 Pulse 3b (+100V). Use Value: Maintains uninterrupted audio/video output by suppressing transients before they propagate to PMICs and display controllers. |
| CAN FD Transceiver Interface | Body Control Module (BCM) LIN Bus |
Use Scenario: Bidirectional protection (using SMAJ150CAQ variant) on CAN_H/CAN_L differential pair exposed to ESD and inductive kickback. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 100pF typical) placed across differential lines; clamps common-mode surges while preserving signal integrity. Use Value: Enables >5Mbps CAN FD operation without bit errors by limiting voltage excursion to <±250V during ISO10605 30kV contact discharge. |
Use Scenario: Single-point protection of LIN slave node VBAT input against battery reversal and jump-start spikes. IC Role / Device Role / Timing Role: Unidirectional TVS referenced to ground; blocks negative transients (ISO7637-2 Pulse 3a: -150V) while passing normal 12V operation. Use Value: Eliminates need for series fuse or resettable PTC by absorbing 1.6A peak pulses without degradation over 100,000 cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A-13-F | No AEC-Q101 qualification; standard industrial grade; identical electrical specs and package. | Not approved for PPAP or automotive production; suitable only for prototyping or non-safety-critical aftermarket designs. | Select when cost sensitivity outweighs automotive certification requirements and long-term supply continuity is not mandated. |
| TPSMD150A | Same 150V VRWM, but 600W PPK rating and higher IFSM (100A); larger SMC package (DO-214AB). | Requires PCB real estate increase (~30% larger footprint); better suited for high-energy transients where 400W margin is insufficient. | Choose when protecting 24V commercial vehicle systems subject to ISO7637-2 Pulse 1 (-200V) or sustained load dump conditions. |
Compared with SMAJ150A-13-F, the AQ version adds AEC-Q101 validation and IATF 16949 traceability-critical for Tier 1 OEM programs-while TPSMD150A trades package size for higher energy handling, making it viable only where board space permits and clamping voltage tolerance allows.
Availability
SMAJ150AQ-13-F is available at Aetrix Electronics and suitable for engine control units, infotainment power rails, and body control module LIN bus protection requiring stable component supply, full automotive qualification, and tape-and-reel delivery for SMT production.
Supply support for SMAJ150AQ-13-F 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
Diodes Incorporated is a global semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions, with design centers in Asia, Europe, and the US, and wafer fabrication in Taiwan and China.
The SMAJ(AQ) series targets automotive electronics requiring high-reliability transient suppression, delivering AEC-Q101-qualified TVS diodes optimized for ISO7637-2 and ISO10605 compliance in compact SMA packages.
FAQ
What is the maximum clamping voltage of SMAJ150AQ-13-F at its rated peak pulse current?
The maximum clamping voltage (VC) is 243V at a peak pulse current (IPP) of 1.6A, measured using the standardized 10×1000μs waveform per Figure 4 in DS40739 Rev. 17-2. This value defines the upper voltage limit imposed on protected circuits during transient events and must be compared against downstream component absolute maximum ratings.
Is SMAJ150AQ-13-F suitable for bidirectional signal line protection?
No-SMAJ150AQ-13-F is unidirectional and features a cathode band marking. For bidirectional protection (e.g., CAN or USB data lines), the bi-directional variant SMAJ150CAQ-13-F must be used, which has symmetric clamping for both polarities and no polarity indicator.
How does the AEC-Q101 qualification impact supply chain assurance for this part?
AEC-Q101 qualification confirms that SMAJ150AQ-13-F undergoes accelerated stress testing (HTOL, TC, UHAST) and is manufactured in IATF 16949-certified facilities with full PPAP documentation support. This enables guaranteed long-term supply, change control notifications, and audit-ready traceability required by automotive OEMs.
What is the steady-state power dissipation rating and thermal derating behavior?
Steady-state power dissipation (PM(AV)) is 1.0W at TL = +75°C. Derating follows Figure 6: power drops linearly to zero at +175°C lead temperature. At +100°C ambient, pulse power is reduced to ~240W per Figure 1, requiring layout attention to thermal vias and copper area for heat dissipation.
SMAJ150AQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AC, SMA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 1.6A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
SMAJ150AQ-13-F FAQ
1.How can I place an order for SMAJ150AQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ150AQ-13-F 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 SMAJ150AQ-13-F reliable?
The price and inventory of SMAJ150AQ-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ150AQ-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ150AQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ150AQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ150AQ-13-F?
SMAJ150AQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ150AQ-13-F 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 SMAJ150AQ-13-F?
For technical support, including SMAJ150AQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ150AQ-13-F requirements.
6.How does Aetrix verify that SMAJ150AQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ150AQ-13-F 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 SMAJ150AQ-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ150AQ-13-F?
All SMAJ150AQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ150AQ-13-F, 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 SMAJ150AQ-13-F part is unused and in its original packaging.
Return procedure for SMAJ150AQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ150AQ-13-F Tags
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