My Inquiry
My Account
Diodes Incorporated SMAJ150CAQ-13-F
- Part No.:
- SMAJ150CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ150CAQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:5,823
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ150CAQ-13-F from Diodes Incorporated is a bi-directional automotive transient voltage suppressor (TVS) diode in SMA package, rated for 400W peak pulse power, 150V reverse standoff voltage (VRWM), and 243V max clamping voltage (VC) at 1.6A IPP. It provides robust protection against ISO7637-2 pulses (Pulse 1: −100V; Pulse 2a: +50V; Pulse 3a: −150V; Pulse 3b: +100V) and ISO10605 ESD events (±30kV contact/air) in vehicle infotainment power rails.
For engineers reviewing the SMAJ150CAQ-13-F datasheet, SMAJ150CAQ-13-F pinout, SMAJ150CAQ-13-F application, or SMAJ150CAQ-13-F equivalent, key selection criteria include clamping voltage margin relative to system rail, IEC 61000-4-5 surge current capability, AEC-Q101 qualification status, and bi-directional symmetry for AC-coupled or floating signal lines.
Technical Context
This bi-directional TVS operates symmetrically across both polarities with identical breakdown (VBR min = 167V, max = 185V @ IT = 1.0mA) and clamping behavior (VC = 243V @ IPP = 1.6A, 10×1000μs waveform). Its glass-passivated junction ensures stable leakage (<0.5µA @ VRWM) and low capacitance suitable for high-speed data lines near power domains.
Designed for automotive-grade reliability, it features IATF 16949 manufacturing, PPAP capability, and thermal operation from −55°C to +175°C junction temperature. The device derates linearly above +25°C ambient, maintaining 400W pulse capability only at TA ≤ +25°C per Figure 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains single 10×1000μs transients without failure under defined test conditions |
| Reverse Standoff Voltage (VRWM) | 150V - maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 167–185V @ 1.0mA - guaranteed conduction onset range defining overvoltage trip threshold |
| Clamping Voltage (VC) | 243V @ IPP = 1.6A - maximum voltage seen by protected circuit during worst-case surge |
| Peak Pulse Current (IPP) | 1.6A - surge current level at which clamping voltage is specified; correlates to ISO7637-2 Pulse 3a severity |
| Leakage Current (IR) | <0.5µA @ VRWM - negligible standby power loss and minimal impact on high-impedance sensing nodes |
| Operating Temperature | −55°C to +175°C TJ - supports under-hood placement and extended thermal cycling in engine control modules |
Pinout & Package
Package: SMA (Surface-Mount Axial), molded plastic UL 94V-0, 0.064g weight, moisture sensitivity level 1. Cathode band absent - bi-directional symmetry confirmed per marking note and electrical table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional surge path | No polarity dependency - either terminal serves as input/output for transient energy diversion |
| Case / Body | Thermal conduction path | Exposed copper pad required per Diodes' recommended footprint for 1.0W steady-state dissipation at TL = +75°C |
Key Features
| Feature | Design Value |
|---|---|
| 400W peak pulse rating | Enables compliance with ISO7637-2 Pulse 3a (−150V) on 12V systems without cascaded protection stages |
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per stress test plan |
| Glass-passivated die | Eliminates wire bond corrosion risk and ensures long-term parameter stability in humid under-hood environments |
| Lead-free, halogen-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive OEM substance restrictions without compromising surge robustness |
| Bi-directional symmetry | Supports protection of differential buses (e.g., LIN, CAN FD stubs) and AC-coupled analog sensor interfaces |
Applications
| Infotainment Power Rail Protection | Body Control Module (BCM) Input Protection |
|---|---|
Use Scenario: 12V supply line feeding USB-C PD controller and display backlight driver in center console. IC Role / Device Role: Primary overvoltage clamp against load dump and jump-start transients. Use Value: Limits voltage to ≤243V during ISO7637-2 Pulse 1 (−100V), preventing latch-up or gate oxide rupture in downstream PMICs. |
Use Scenario: Wake-up input (WAKE#) from door handle sensor connected to BCM microcontroller GPIO. IC Role / Device Role: ESD and fast transient suppressor on low-current digital input. Use Value: Clamps ±30kV ISO10605 discharges to safe levels while adding <1pF parasitic capacitance to preserve signal edge integrity. |
| Electric Power Steering (EPS) Sensor Interface | ADAS Camera Power Conditioning |
Use Scenario: 5V reference line shared between torque sensor and steering angle resolver in EPS ECU. IC Role / Device Role: Bi-directional rail clamp protecting precision analog references from coupled noise. Use Value: Symmetric clamping ensures equal suppression of positive/negative spikes induced by motor commutation noise. |
Use Scenario: 12V input to FPD-Link III serializer powering rear-view camera module. IC Role / Device Role: First-stage surge limiter upstream of DC/DC converter and EMI filter. Use Value: Absorbs 400W pulse energy from battery line transients, reducing stress on downstream ceramic capacitors and inductors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A-13-F | Uni-directional; cathode-banded; VF = 3.5V @ 35A forward surge | Requires correct polarity orientation; unsuitable for AC or floating nodes | Select only when protecting unidirectional DC rails with known polarity and no reverse-voltage risk |
| SMCJ150CA | Same VRWM/VC specs but SMC package (higher thermal mass); PPK = 1500W | Larger footprint (7.11 × 6.22 mm vs SMA's 4.6 × 2.92 mm); better for high-volume surge duty | Choose when board space allows and system requires >400W pulse handling without derating |
Compared with SMAJ150CAQ-13-F, the uni-directional SMAJ150A-13-F demands strict layout polarity control, while the SMCJ150CA trades compactness for higher surge capacity-making the SMAJ150CAQ optimal for space-constrained, bi-directional automotive signal/power protection where AEC-Q101 and PPAP support are mandatory.
Availability
SMAJ150CAQ-13-F is available at Aetrix Electronics and suitable for automotive infotainment systems, body control modules, electric power steering ECUs, and ADAS camera power conditioning requiring stable component supply with full AEC-Q101 traceability.
Supply support for SMAJ150CAQ-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.
The SMAJ series targets AEC-Q101-compliant transient suppression in harsh automotive environments, with design focus on ISO7637-2 and ISO10605 compliance, thermal robustness, and lead-free manufacturability.
FAQ
What is the maximum clamping voltage of SMAJ150CAQ-13-F under standard test conditions?
The maximum clamping voltage (VC) is 243V, measured at a peak pulse current (IPP) of 1.6A using the 10×1000μs waveform per Figure 4 in DS40739 Rev. 17-2. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during surge events.
Is SMAJ150CAQ-13-F suitable for protecting CAN bus lines?
No - its 243V clamping voltage far exceeds typical CAN transceiver absolute maximum ratings (usually ±40V). It is intended for 12V/24V power rail protection, not data line ESD suppression. For CAN, use dedicated low-capacitance, low-clamp TVS arrays such as DZ23C24 or SP1001.
Does SMAJ150CAQ-13-F require a heatsink for continuous operation?
No external heatsink is required. Its 1.0W steady-state power dissipation rating at TL = +75°C is managed via PCB copper area per Diodes' recommended SMA pad layout. Thermal performance relies on proper land pattern and internal thermal resistance (θJA ≈ 150°C/W), not added heatsinking.
How does the "AQ" suffix affect qualification and packaging?
The "AQ" suffix denotes AEC-Q101 qualification, PPAP capability, and manufacturing in IATF 16949-certified facilities. The "-13-F" indicates 5,000-piece tape-and-reel packaging with lead-free matte tin plating, compliant with J-STD-020 Level 1 moisture sensitivity.
SMAJ150CAQ-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:
- -
- Bidirectional Channels:
- 1
- 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
SMAJ150CAQ-13-F FAQ
1.How can I place an order for SMAJ150CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ150CAQ-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 SMAJ150CAQ-13-F reliable?
The price and inventory of SMAJ150CAQ-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 SMAJ150CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ150CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ150CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ150CAQ-13-F?
SMAJ150CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ150CAQ-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 SMAJ150CAQ-13-F?
For technical support, including SMAJ150CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ150CAQ-13-F requirements.
6.How does Aetrix verify that SMAJ150CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ150CAQ-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 SMAJ150CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ150CAQ-13-F?
All SMAJ150CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ150CAQ-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 SMAJ150CAQ-13-F part is unused and in its original packaging.
Return procedure for SMAJ150CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ150CAQ-13-F Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
