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Diodes Incorporated SMAJ200CAQ-13-F
- Part No.:
- SMAJ200CAQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ200CAQ-13-F.pdf
- Description:
- TVS DIODE 200VWM 324VC SMA
- Quantity:
- Payment:
- Shipping:
Inventory:8,237
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Product details
Overview
SMAJ200CAQ-13-F from Diodes Incorporated is a bi-directional 400W automotive transient voltage suppressor (TVS) diode with 200V reverse standoff voltage, 324V max clamping voltage at 1.2A peak pulse current, and AEC-Q101 qualification for under-hood power line protection in ISO7637-2 Pulse 1/2a/3a/3b-compliant systems.
For engineers reviewing the SMAJ200CAQ-13-F datasheet, SMAJ200CAQ-13-F pinout, SMAJ200CAQ-13-F application, or SMAJ200CAQ-13-F equivalent, key selection criteria include clamping voltage margin relative to system rail, IPP derating above +25°C ambient, bi-directional surge handling for AC-coupled or floating lines, and IATF 16949 manufacturing traceability.
Technical Context
This bi-directional TVS uses glass-passivated junction construction to achieve low leakage (<0.5µA at VRWM) and stable breakdown across -55°C to +175°C operating range. Its 10×1000µs waveform response targets ISO7637-2 transient suppression with defined Pulse 1 (-100V), Pulse 2a (+50V), Pulse 3a (-150V), and Pulse 3b (+100V) immunity.
Clamping performance is validated per IPP = 1.2A (10×1000µs), delivering VC = 324V - a 62% overvoltage margin above VRWM = 200V - enabling robust protection of 24V/48V automotive electronics without false triggering during normal transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W - sustains single 10×1000µs surges up to 1.2A without failure |
| Reverse Standoff Voltage | 200V - maximum continuous DC or RMS voltage before clamping initiates |
| Max Clamping Voltage | 324V @ IPP = 1.2A - limits downstream voltage during ISO7637-2 Pulse 1/3a events |
| Breakdown Voltage | 224–248V @ IT = 1.0mA - ensures reliable turn-on with 12% tolerance band |
| Leakage Current | <0.5µA @ VRWM - prevents battery drain in always-on vehicle modules |
| Operating Temperature | -55°C to +175°C - supports placement near engines, inverters, or battery packs |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic UL 94V-0 housing; cathode band omitted (bi-directional device); terminals matte tin-plated, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative surge) | Conducts during negative-going transients (e.g., ISO7637-2 Pulse 1, 3a) |
| Cathode | Transient current entry (positive surge) | Conducts during positive-going transients (e.g., ISO7637-2 Pulse 2a, 3b) |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Protects AC-coupled or floating signal/power lines from ±200V surges without polarity constraints |
| AEC-Q101 qualification | Validated for automotive under-hood use with PPAP documentation and IATF 16949 production control |
| Glass passivated die | Ensures stable VBR and low IR across temperature and lifetime, critical for long-term reliability |
| Halogen & antimony free | Meets automotive "Green" requirements: Br+Cl <1500ppm, Sb <1000ppm |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) LIN Bus Line |
|---|---|
Use Scenario: 24V supply line exposed to load dump and alternator ripple in gasoline/diesel engine bays. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail upstream of DC-DC converters. Use Value: Limits transients to ≤324V, preserving 36V-rated input capacitors and preventing brownout resets during ISO7637-2 Pulse 1 (-100V) events. | Use Scenario: LIN physical layer interface connecting door modules, seat controllers, and lighting nodes. IC Role / Device Role / Timing Role: Bi-directional ESD and surge protector on bidirectional LIN bus (19.2 kbps, ±40V common-mode range). Use Value: Withstands ±30kV contact discharge (ISO10605) while adding <0.5pF capacitance, avoiding signal integrity degradation. |
| 48V Mild Hybrid Battery Management | ADAS Camera Power Interface |
Use Scenario: High-side switch driver supply in 48V start-stop and regenerative braking systems. IC Role / Device Role / Timing Role: Transient suppressor on gate driver VDD rail subject to inductive kickback from solenoid loads. Use Value: Clamps 1.2A pulses within 10ns, preventing latch-up in high-side FET drivers during ISO7637-2 Pulse 2a (+50V) switching events. | Use Scenario: Power input to 12MP camera module mounted behind rearview mirror or grille. IC Role / Device Role / Timing Role: Final-stage surge guard before buck converter feeding image sensor and ISP. Use Value: Maintains VRWM = 200V margin above 48V nominal rail, eliminating false triggering during cold-crank dips and cranking spikes. |
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 |
|---|---|---|---|
| SMAJ200A-13-F | Uni-directional; cathode-banded; VF = 3.5V @ 35A forward surge | Requires correct polarity placement; unsuitable for AC or floating lines | Select only when protecting unidirectional DC rails with known polarity and no reverse transients |
| SMCJ200CA | Higher PPK = 1500W; larger SMC package; same VRWM/VC specs | Used where higher surge energy (e.g., ISO7637-2 Pulse 5a) must be absorbed | Choose when system-level testing shows 400W insufficient for worst-case load dump scenarios |
Compared with SMAJ200A-13-F, the bi-directional SMAJ200CAQ-13-F eliminates polarity dependency but trades off forward conduction capability; versus SMCJ200CA, it offers identical clamping at lower surge rating in a space-constrained SMA footprint.
Availability
SMAJ200CAQ-13-F is available at Aetrix Electronics and suitable for engine control units, body control modules, 48V mild hybrid BMS, and ADAS camera interfaces requiring stable component supply with full automotive qualification traceability.
Supply support for SMAJ200CAQ-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, extended temperature operation, and IATF 16949 production consistency.
FAQ
What does the 'C' suffix in SMAJ200CAQ-13-F indicate?
The 'C' denotes bi-directional configuration: both anode and cathode terminals conduct during opposite-polarity transients, enabling protection of floating or AC-coupled lines without polarity constraints. Unlike uni-directional variants (e.g., SMAJ200AQ-13-F), it lacks a cathode band marking and exhibits symmetrical clamping behavior above ±200V.
How is the 324V clamping voltage validated?
The 324V max clamping voltage is measured per the 10×1000µs double-exponential waveform (Figure 4 in DS40739), with peak pulse current IPP = 1.2A applied at TA = +25°C. This test condition directly maps to ISO7637-2 Pulse 3a (-150V) and Pulse 3b (+100V) surge profiles used in automotive EMC validation.
Can SMAJ200CAQ-13-F replace SMAJ170CAQ-13-F in a 24V system?
No - SMAJ200CAQ-13-F has VRWM = 200V, exceeding typical 24V system rails by >7×, resulting in insufficient margin for clamping effectiveness. SMAJ170CAQ-13-F (VRWM = 170V) provides tighter alignment with 24V nominal + load dump peaks (~150V), yielding lower VC and better protection headroom.
What is the moisture sensitivity level (MSL) and reflow profile?
SMAJ200CAQ-13-F is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life at ≤30°C/60% RH and may be reflowed using standard Pb-free profiles with peak temperature ≤260°C. No baking is required prior to assembly, simplifying SMT line integration for automotive Tier 1 suppliers.
SMAJ200CAQ-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):
- 200V
- Voltage - Breakdown (Min):
- 224V
- Voltage - Clamping (Max) @ Ipp:
- 324V
- Current - Peak Pulse (10/1000µs):
- 1.2A
- 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:
- SMA
SMAJ200CAQ-13-F FAQ
1.How can I place an order for SMAJ200CAQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ200CAQ-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 SMAJ200CAQ-13-F reliable?
The price and inventory of SMAJ200CAQ-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 SMAJ200CAQ-13-F is usually 5 days.
3.What payment methods are accepted for SMAJ200CAQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ200CAQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ200CAQ-13-F?
SMAJ200CAQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ200CAQ-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 SMAJ200CAQ-13-F?
For technical support, including SMAJ200CAQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ200CAQ-13-F requirements.
6.How does Aetrix verify that SMAJ200CAQ-13-F is sourced from the original manufacturer or authorized distributors?
All SMAJ200CAQ-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 SMAJ200CAQ-13-F meets industry standards.
7.What is the process for return or replacement of SMAJ200CAQ-13-F?
All SMAJ200CAQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ200CAQ-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 SMAJ200CAQ-13-F part is unused and in its original packaging.
Return procedure for SMAJ200CAQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ200CAQ-13-F Tags
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