My Inquiry
My Account
Diodes Incorporated SMCJ120CAQ-13-F
- Part No.:
- SMCJ120CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ120CAQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:4,104
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCJ120CAQ-13-F from Diodes Incorporated is a bi-directional 120V standoff, 1500W peak pulse power automotive transient voltage suppressor (TVS) in SMC package. It clamps transients to ≤193V at 7.9A peak pulse current, meets ISO7637-2 Pulse 1/2a/3a/3b and ISO10605 ESD requirements, and is AEC-Q101 qualified for engine control units and infotainment power rails.
For engineers reviewing the SMCJ120CAQ-13-F datasheet, SMCJ120CAQ-13-F pinout, SMCJ120CAQ-13-F application, or SMCJ120CAQ-13-F equivalent, this page delivers verified electrical specs, automotive compliance details, SMC package mechanical data, and direct substitution guidance for surge protection design in 12V/24V vehicle subsystems.
Technical Context
This bi-directional TVS diode operates symmetrically across both polarities, with 120V reverse standoff voltage (VRWM), 133–147V breakdown range (VBR), and 193V maximum clamping voltage (VC) at 7.9A IPP under 10×1000μs waveform. Its <1ns response time ensures protection against fast-rising ESD and load dump events.
Rated for -55°C to +175°C junction temperature, it sustains 5W steady-state power at TL = +75°C and handles 200A non-repetitive forward surge (8.3ms half-sine). Compliance with ISO7637-2 Pulse 1 (-100V), Pulse 2a (+50V), Pulse 3a (-150V), and Pulse 3b (+100V) confirms suitability for automotive power line hardening.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W - withstands ISO7637-2 load dump surges without failure |
| Reverse Standoff Voltage | 120V - blocks normal 24V system operation while triggering above overvoltage threshold |
| Clamping Voltage @ 7.9A | 193V - limits downstream IC voltage during 10×1000μs transient to safe level |
| Breakdown Voltage Range | 133–147V - ensures reliable turn-on before damage to protected circuitry |
| Leakage Current @ VRWM | ≤0.5µA - negligible standby power loss in always-on automotive modules |
| Operating Temperature | -55°C to +175°C - supports under-hood placement in engine control units |
| AEC-Q101 Qualified | Yes - certified for automotive use with PPAP documentation and IATF 16949 manufacturing |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic body with UL 94V-0 flammability rating, 0.21g weight, cathode band omitted (bi-directional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Conducts during negative-going surges (e.g., ISO7637-2 Pulse 1, Pulse 3a) |
| Cathode | Transient current entry (positive polarity) | Conducts during positive-going surges (e.g., ISO7637-2 Pulse 2a, Pulse 3b) |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Protects AC-coupled or dual-polarity lines (e.g., CAN bus, sensor differential pairs) without polarity concerns |
| 1500W peak pulse rating | Handles high-energy load dump events common in 24V commercial vehicle systems |
| Fast <1ns response | Activates before sensitive microcontrollers or transceivers experience overvoltage stress |
| AEC-Q101 qualification | Validated reliability for automotive safety-critical functions including ADAS power domains |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) LIN Bus |
|---|---|
Use Scenario: Protects 12V/24V supply rail from alternator load dump and battery disconnect transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and MCU power regulators. Use Value: Limits rail voltage to ≤193V during -100V Pulse 1 and +100V Pulse 3b, preventing regulator latch-up or MOSFET avalanche failure. |
Use Scenario: Shields LIN transceiver PHY layer from ESD and coupled noise on vehicle harnesses. IC Role / Device Role / Timing Role: Bi-directional shunt device across LIN signal pair (LIN-H/L) referenced to ground. Use Value: Clamps ±30kV contact discharge (ISO10605) within <1ns, preserving signal integrity and avoiding transceiver reset. |
| Infotainment Head Unit USB Power | ADAS Camera Power Interface |
Use Scenario: Guards 5V USB VBUS line against hot-plug surges and conducted transients from shared vehicle power. IC Role / Device Role / Timing Role: Secondary protection stage after primary fuse and upstream TVS, placed adjacent to USB controller. Use Value: Delivers 1500W pulse handling with ≤0.5µA leakage, minimizing standby current drain in always-on infotainment systems. |
Use Scenario: Secures 12V camera module input against ignition noise and ESD from lens actuator cables. IC Role / Device Role / Timing Role: Front-end transient suppressor mounted at connector interface before DC-DC and image sensor. Use Value: Withstands -150V Pulse 3a and +50V Pulse 2a per ISO7637-2, ensuring continuous video stream during engine cranking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional automotive TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC120CA | Same 120V VRWM, 1500W rating, but TO-263 (D2PAK) package; higher thermal mass, larger footprint | Better for high-temperature under-hood locations requiring enhanced steady-state dissipation | Select when board space permits larger package and thermal performance outweighs SMT density constraints |
| TPSMD120C | 120V VRWM, 1500W, but lower clamping voltage (180V @ 7.9A); RoHS-compliant, not AEC-Q101 qualified | Limited to non-safety-critical consumer or industrial applications lacking automotive certification | Choose only for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with SAC120CA and TPSMD120C, SMCJ120CAQ-13-F uniquely combines AEC-Q101 qualification, SMC package compactness, and validated ISO7637-2/Pulse 3a compliance-making it the only drop-in solution for space-constrained, safety-certified automotive power rail protection.
Availability
SMCJ120CAQ-13-F is available at Aetrix Electronics and suitable for engine control units, body control modules, infotainment head units, and ADAS camera interfaces requiring stable component supply across automotive production lifecycles.
Supply support for SMCJ120CAQ-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 company specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and computing markets.
This device belongs to the SMCJ(AQ) automotive TVS family, engineered specifically to meet stringent ISO7637-2 and ISO10605 requirements for 12V/24V vehicle electrical systems.
FAQ
What does the "C" suffix in SMCJ120CAQ-13-F indicate?
The "C" denotes bi-directional configuration, meaning the device provides symmetrical clamping for both positive and negative transients-critical for protecting differential buses like LIN or ungrounded sensor lines. Unlike uni-directional variants (e.g., SMCJ120AQ), it has no cathode band marking and conducts in either polarity once VBR is exceeded.
How does SMCJ120CAQ-13-F differ from industrial-grade SMCJ120C?
SMCJ120CAQ-13-F includes the "AQ" suffix indicating AEC-Q101 qualification, PPAP capability, and manufacturing in IATF 16949-certified facilities-requirements absent in standard SMCJ120C. It also undergoes additional automotive-specific testing for temperature cycling, humidity bias, and mechanical shock, ensuring reliability in vehicular environments.
Can this TVS be used on a 48V mild-hybrid vehicle power rail?
No-its 120V VRWM and 193V clamping voltage are designed for 12V/24V systems. For 48V architectures, Diodes recommends SMCJ200CAQ-13-F (200V VRWM, 324V clamping), which maintains 1500W rating while accommodating higher nominal bus voltages and associated transients per ISO7637-2 extended pulse definitions.
What is the maximum allowable PCB pad temperature during reflow soldering?
The SMC package supports lead-free reflow per J-STD-020, with peak temperature up to 260°C for ≤30 seconds. Diodes specifies that terminal plating (matte tin) remains solderable under these conditions, and moisture sensitivity level is rated at Level 1-no baking required prior to assembly.
SMCJ120CAQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AB, SMC
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 120V
- Voltage - Breakdown (Min):
- 133V
- Voltage - Clamping (Max) @ Ipp:
- 193V
- Current - Peak Pulse (10/1000µs):
- 7.9A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- SMC
SMCJ120CAQ-13-F FAQ
1.How can I place an order for SMCJ120CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ120CAQ-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 SMCJ120CAQ-13-F reliable?
The price and inventory of SMCJ120CAQ-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 SMCJ120CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMCJ120CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ120CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ120CAQ-13-F?
SMCJ120CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ120CAQ-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 SMCJ120CAQ-13-F?
For technical support, including SMCJ120CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ120CAQ-13-F requirements.
6.How does Aetrix verify that SMCJ120CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMCJ120CAQ-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 SMCJ120CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMCJ120CAQ-13-F?
All SMCJ120CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ120CAQ-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 SMCJ120CAQ-13-F part is unused and in its original packaging.
Return procedure for SMCJ120CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ120CAQ-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…
