My Inquiry
My Account
Diodes Incorporated SMBJ170CAQ-13-F
- Part No.:
- SMBJ170CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ170CAQ-13-F.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:8,110
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ170CAQ-13-F from Diodes Incorporated is a bi-directional automotive-grade transient voltage suppressor (TVS) diode in SMB package, rated for 600W peak pulse power, 170V reverse standoff voltage (VRWM), and 275V clamping voltage (VC) at 2.2A peak pulse current. It protects CAN, LIN, and sensor interfaces in 12V/24V vehicle subsystems against ISO7637-2 Pulse 1/2a/3a/3b surges and ISO10605 ESD events.
For engineers reviewing the SMBJ170CAQ-13-F datasheet, SMBJ170CAQ-13-F pinout, SMBJ170CAQ-13-F application, or SMBJ170CAQ-13-F equivalent, this device is selected for AEC-Q101-compliant surge protection where precise clamping voltage, low leakage (<0.5µA @ VRWM), and IATF 16949-manufactured traceability are required in body control modules, ADAS camera links, and infotainment power rails.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling robust protection of differential or AC-coupled automotive signal lines without polarity constraints. Its 170V VRWM ensures compatibility with 24V battery systems while maintaining margin above nominal rail voltage during transients.
The device uses silicon avalanche junction technology to achieve sub-nanosecond response time and stable clamping under 10/1000µs waveform stress. Thermal derating follows a linear 4.8W/°C slope above +25°C ambient, with PM(AV) = 5.0W at TL = +75°C and full operation from –55°C to +175°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - Sustains single 10×1000µs surge without failure; defines maximum energy absorption capability. |
| Reverse Standoff Voltage (VRWM) | 170V - Maximum continuous DC or RMS voltage before significant leakage; sets operating voltage ceiling for 24V systems. |
| Clamping Voltage (VC) | 275V @ IPP = 2.2A - Voltage seen by protected circuit during worst-case surge; determines downstream component voltage rating. |
| Breakdown Voltage (VBR) | 189–209V @ IT = 1mA - Avalanche onset range; ensures reliable triggering before VC is reached. |
| Reverse Leakage (IR) | <0.5µA @ VRWM - Negligible standby current; avoids battery drain in always-on automotive modules. |
| Operating Temperature | –55°C to +175°C - Full specification over extended automotive thermal range; supports under-hood deployment. |
| AEC-Q101 Qualified | Yes - Validated for automotive use per stress test requirements including HTGB, HTRB, TCT, and ESD. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic (UL 94V-0), 0.1g weight, moisture sensitivity level 1. Cathode band omitted - bi-directional symmetry eliminates polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional surge path | Either terminal accepts positive or negative transients; no orientation required during placement. |
| Case / Body | Thermal conduction path | Exposed copper pad on PCB bottom enables heat dissipation; requires ≥10mm² 2-oz copper pour for PM(AV) derating compliance. |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse rating | Enables protection against ISO7637-2 Pulse 3b (+150V) and Pulse 1 (–150V) without degradation in 24V architectures. |
| Bi-directional architecture | Eliminates need for dual uni-directional devices on differential buses like CAN FD or FlexRay, reducing BOM count and layout area. |
| AEC-Q101 qualification & IATF 16949 manufacturing | Guarantees production consistency, change control, and PPAP documentation support for Tier 1 automotive programs. |
| RoHS 3 & Halogen-free "Green" construction | Meets EU ELV Directive and OEM sustainability mandates; <900ppm Br, <900ppm Cl, <1000ppm Sb. |
Applications
| Body Control Module (BCM) | ADAS Camera Power Input |
|---|---|
|
Use Scenario: Protects 12V supply input of BCM microcontroller and relay drivers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of LDO regulators and CAN transceivers. Use Value: Limits transient voltage to ≤275V, preventing latch-up or gate oxide damage in 3.3V/5V logic ICs powered from the same rail. |
Use Scenario: Shields 12V camera module power line against ISO7637-2 Pulse 2a (+112V) induced by ignition switching noise. IC Role / Device Role / Timing Role: First-line defense before DC-DC converter input, absorbing energy before it reaches sensitive image sensor ICs. Use Value: Maintains <0.5µA leakage to avoid dark current drift in CMOS image sensors during sleep mode. |
| Infotainment Head Unit USB-C PD Port | Electric Power Steering (EPS) Sensor Interface |
|
Use Scenario: Guards VBUS line of USB-C port against ESD and hot-plug surges in center console applications. IC Role / Device Role / Timing Role: Bi-directional clamp between VBUS and GND, compliant with IEC 61000-4-2 Level 4 (±15kV contact). Use Value: Achieves 30kV air/contact discharge per ISO10605, eliminating need for external ESD arrays on high-speed data lines. |
Use Scenario: Protects analog output of steering angle sensor (SAS) from coupled transients on 5V reference and signal lines. IC Role / Device Role / Timing Role: Dual placement on REF and OUT pins to maintain common-mode rejection during ISO7637-2 Pulse 3a (–220V). Use Value: Symmetric clamping ensures <10mV offset shift in ratiometric sensor output, preserving ASIL-B functional safety integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA | No "Q" suffix → not AEC-Q101 qualified; RoHS-compliant but lacks PPAP documentation and IATF 16949 traceability. | Acceptable for industrial or consumer designs; unsuitable for automotive production release. | Select only if automotive qualification is not required and cost sensitivity outweighs long-term supply assurance. |
| SMCJ170CAQ-13-F | SMC package (larger footprint); 1500W peak power; identical VRWM/VC but higher IFSM (200A vs. 100A). | Better suited for high-energy load dump scenarios; requires larger PCB area and different thermal layout. | Choose when system-level surge testing exceeds 600W or when legacy SMC footprint is fixed in design. |
Compared with SMBJ170CA (non-automotive) and SMCJ170CAQ-13-F (higher-power SMC), the SMBJ170CAQ-13-F uniquely balances AEC-Q101 compliance, SMB space efficiency, and 600W capability-making it optimal for volume automotive ECUs where footprint, qualification, and surge margin are jointly constrained.
Availability
SMBJ170CAQ-13-F is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera systems, and infotainment power management requiring stable component supply across multi-year vehicle program lifecycles.
Supply support for SMBJ170CAQ-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, with design centers across Asia, Europe, and the US.
The SMBJ(AQ) series is part of Diodes' Automotive Protection portfolio, engineered specifically for ISO7637-2 and ISO10605 compliance in harsh-temperature vehicle environments.
FAQ
What does the "Q" suffix signify in SMBJ170CAQ-13-F?
The "Q" denotes AEC-Q101 qualification, confirming the device has passed stress tests including high-temperature reverse bias, temperature cycling, and ESD per automotive reliability standards. It also indicates production in an IATF 16949-certified facility with full PPAP documentation support-mandatory for Tier 1 automotive sourcing.
Can SMBJ170CAQ-13-F be used in unidirectional configurations?
No-it is strictly bi-directional, with symmetrical avalanche characteristics across both terminals. For unidirectional protection (e.g., DC power rail clamping), select the non-"C" variant such as SMBJ170AQ-13-F, which includes a cathode band and asymmetric forward/reverse behavior.
How does the 275V clamping voltage impact system-level protection design?
The 275V VC at 2.2A defines the maximum voltage imposed on downstream components during a 10×1000µs surge. Designers must ensure all ICs and passives on the protected net have minimum breakdown or absolute maximum ratings exceeding 275V, with margin for tolerance and temperature drift-especially critical for 24V-rated MOSFETs and capacitors.
Is thermal derating required for continuous operation at +105°C ambient?
Yes. At TA = +105°C, the 600W peak rating remains valid for single pulses, but steady-state power must be derated to ~1.0W (per Figure 6). For sustained surge duty cycles, PCB copper area, solder mask opening, and adjacent component spacing must be optimized to maintain TL ≤ +75°C to sustain the full 5.0W PM(AV).
SMBJ170CAQ-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 170V
- Voltage - Breakdown (Min):
- 189V
- Voltage - Clamping (Max) @ Ipp:
- 275V
- Current - Peak Pulse (10/1000µs):
- 2.2A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
SMBJ170CAQ-13-F FAQ
1.How can I place an order for SMBJ170CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ170CAQ-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 SMBJ170CAQ-13-F reliable?
The price and inventory of SMBJ170CAQ-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 SMBJ170CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ170CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ170CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ170CAQ-13-F?
SMBJ170CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ170CAQ-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 SMBJ170CAQ-13-F?
For technical support, including SMBJ170CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ170CAQ-13-F requirements.
6.How does Aetrix verify that SMBJ170CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ170CAQ-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 SMBJ170CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ170CAQ-13-F?
All SMBJ170CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ170CAQ-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 SMBJ170CAQ-13-F part is unused and in its original packaging.
Return procedure for SMBJ170CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ170CAQ-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…
