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Taiwan Semiconductor Corporation SMBJ13CAH
- Part No.:
- SMBJ13CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ13CAH.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,642
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Product details
Overview
SMBJ13CAH from Taiwan Semiconductor is a bidirectional transient voltage suppressor diode in DO-214AA (SMB) package, designed for automotive-grade ESD and surge protection of sensitive electronics. It features a 13 V working stand-off voltage (VWM), 14.4–15.9 V breakdown voltage (VBR), 29.0 A peak pulse current (IPP), 21.5 V maximum clamping voltage (VC), and 600 W peak pulse power (PPK) with <1.0 ps response time - deployed in CAN bus interfaces, automotive lighting control modules, and infotainment power rails.
For engineers reviewing the SMBJ13CAH datasheet, SMBJ13CAH pinout, SMBJ13CAH application, or SMBJ13CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low leakage (<1 µA at VWM), and thermal performance (RθJA = 55 °C/W) in space-constrained PCB layouts.
Technical Context
The SMBJ13CAH is a unidie, bidirectional TVS diode optimized for fast transient suppression in automotive and industrial environments. Its glass-passivated junction ensures stable breakdown behavior under repetitive surge stress, while its DO-214AA package supports automated placement and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements.
It operates across -55 °C to +150 °C junction temperature range and delivers consistent clamping performance with <1.0 ps response time and typical IR <1 µA above 10 V. The device meets ISO 7637-2 for load dump and switching transients, making it suitable for 12 V and 24 V vehicle electrical systems where polarity-agnostic protection is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 14.4 V / 15.9 V - Breakdown occurs within this range at 1 mA test current, ensuring predictable turn-on |
| VC @ IPP | 21.5 V - Clamps transients to ≤21.5 V at 29.0 A peak pulse, protecting downstream ICs rated for ≤24 V |
| PPK | 600 W - Sustains 10/1000 µs surge pulses up to 600 W without failure |
| ID @ VWM | <1 µA - Negligible leakage at rated stand-off, minimizing standby power loss in battery-critical systems |
| TJ max | +150 °C - Enables operation in under-hood automotive locations with high ambient temperatures |
| RθJA | 55 °C/W - Allows thermal design margin on standard FR-4 PCBs with minimal copper area |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; bidirectional configuration means both terminals are symmetrical and polarity-insensitive in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | No polarity assignment - either terminal connects to protected line, other to ground or reference rail |
| Cathode band (marking) | Manufacturing orientation indicator | Visible band denotes terminal 1 per DO-214AA mechanical drawing; irrelevant for electrical function in CAH variant |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock per stress test requirements |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage under high-humidity or high-temperature aging conditions |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) waveforms |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow - compatible with standard SMT assembly without dry-pack handling |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally restricted substances |
Applications
| Automotive CAN Bus Protection | LED Headlamp Driver Protection |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L lines in body control modules against ESD and load-dump-induced transients. IC Role / Device Role: Bidirectional clamping element placed between differential pair and ground, absorbing ±25 kV contact ESD and ISO 7637-2 Pulse 2b. Use Value: Maintains signal integrity by clamping transients to ≤21.5 V while adding <0.5 pF capacitance - no data rate degradation on 500 kbps CAN FD links. | Use Scenario: Safeguarding buck controller ICs and MOSFET gate drivers in adaptive LED headlamps subjected to 12 V battery line surges. IC Role / Device Role: Parallel-connected TVS across input rail to clamp 10/1000 µs load dump spikes up to 600 W without latch-up or thermal runaway. Use Value: Enables robust 12 V system operation with ≤1 µA leakage at 13 V, preserving microamp-level sleep-mode current budgets. |
| Infotainment Power Rail Protection | Industrial Sensor Interface Protection |
Use Scenario: Securing 5 V/3.3 V power inputs to audio processors and display controllers in dashboard units exposed to ignition noise. IC Role / Device Role: Standoff-rated TVS placed upstream of LDO regulators to prevent overvoltage damage during cranking transients. Use Value: Clamps 100 V transients to 21.5 V within <1 ps, limiting regulator input stress and eliminating need for oversized input capacitors. | Use Scenario: Shielding RS-485 transceivers and analog sensor front-ends in factory automation PLC I/O modules from EFT and surge events. IC Role / Device Role: Bidirectional protection on signal lines referenced to local ground, suppressing common-mode transients up to ±4 kV EFT. Use Value: Delivers repeatable clamping performance across -40 °C to +125 °C ambient, supporting extended industrial temperature certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13CA | Same VWM/VBR/VC specs but not AEC-Q101 qualified; RθJA = 60 °C/W vs. 55 °C/W | Lacks automotive qualification; limited to commercial/industrial grade systems without temperature or reliability validation | Select SMBJ13CA only if AEC-Q101 and ISO 7637-2 compliance are not required and thermal margin allows higher RθJA |
| SAC13CA | Same DO-214AA package and 13 V rating, but lower PPK = 400 W and higher VC = 23.0 V at same IPP | Reduced surge handling capacity; less effective for high-energy load dump events in 12 V automotive systems | Choose SAC13CA only when cost is prioritized over peak energy absorption and clamping tightness is relaxed |
Compared with SMBJ13CA and SAC13CA, SMBJ13CAH provides superior automotive readiness via AEC-Q101 qualification, tighter clamping (21.5 V vs. ≥23.0 V), and better thermal dissipation (55 °C/W), making it the preferred choice for safety-critical 12 V vehicle subsystems requiring validated surge resilience.
Availability
SMBJ13CAH is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and LED lighting systems requiring stable component supply with full traceability and lifecycle management.
Supply support for SMBJ13CAH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power devices since 1979.
The SMBJH series was developed specifically for AEC-Q101-compliant automotive transient suppression, emphasizing robustness in harsh environments, high-reliability packaging, and precise clamping performance across wide temperature ranges.
FAQ
What does the "CAH" suffix indicate in SMBJ13CAH?
The "CAH" suffix in SMBJ13CAH denotes a bidirectional TVS diode (C), AEC-Q101 qualified (A), and part of the high-reliability SMBJH series (H). Unlike unidirectional variants (e.g., SMBJ13H), SMBJ13CAH provides symmetrical clamping for both polarities - essential for protecting differential buses like CAN or RS-485 without polarity concerns.
Is SMBJ13CAH suitable for 24 V automotive systems?
Yes, SMBJ13CAH is suitable for 24 V automotive systems when used on sub-circuits with lower voltage rails (e.g., 12 V or 5 V domains), but not directly across the main 24 V battery line. Its 13 V VWM aligns with 12 V nominal systems; for 24 V primary rails, higher-VWM variants like SMBJ26CAH or SMBJ33CAH are recommended to avoid leakage or premature conduction.
How does SMBJ13CAH meet ISO 7637-2 compliance?
SMBJ13CAH meets ISO 7637-2 Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnection and relay bounce), and Pulse 3a/3b (capacitive coupling) through verified clamping performance at 21.5 V under 29.0 A 10/1000 µs surges. Its 600 W PPK rating and <1.0 ps response ensure energy diversion before downstream ICs experience overstress.
What is the maximum operating temperature for SMBJ13CAH?
The maximum junction temperature (TJ max) for SMBJ13CAH is +150 °C, with storage temperature ranging from -55 °C to +150 °C. This enables deployment in under-hood automotive locations such as engine control units and lighting modules where ambient temperatures exceed 105 °C, provided PCB thermal design maintains junction temperature within limit.
Does SMBJ13CAH require special PCB layout considerations?
Yes - minimize trace inductance by placing SMBJ13CAH as close as possible to the protected node (e.g., connector or IC pin), use short, wide traces to ground, and avoid vias in the surge path. Its DO-214AA package supports standard SMT reflow profiles, and moisture sensitivity level 1 eliminates pre-bake requirements, simplifying manufacturing flow.
SMBJ13CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 29A
- Power - Peak Pulse:
- 600W
- 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:
- DO-214AA (SMB)
SMBJ13CAH FAQ
1.How can I place an order for SMBJ13CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ13CAH 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 SMBJ13CAH reliable?
The price and inventory of SMBJ13CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ13CAH is usually 5 days.
3.What payment methods are accepted for SMBJ13CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ13CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ13CAH?
SMBJ13CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ13CAH 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 SMBJ13CAH?
For technical support, including SMBJ13CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ13CAH requirements.
6.How does Aetrix verify that SMBJ13CAH is sourced from the original manufacturer or authorized distributors?
All SMBJ13CAH 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 SMBJ13CAH meets industry standards.
7.What is the process for return or replacement of SMBJ13CAH?
All SMBJ13CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ13CAH, 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 SMBJ13CAH part is unused and in its original packaging.
Return procedure for SMBJ13CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ13CAH Tags
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