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Taiwan Semiconductor Corporation SMDJ13AH
- Part No.:
- SMDJ13AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMDJ13AH.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,493
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Product details
Overview
SMDJ13AH from Taiwan Semiconductor is a unidirectional 3000W surface-mount transient voltage suppressor (TVS) diode with a 13V working stand-off voltage, 14.4–15.9V breakdown voltage at 1mA, and 21.5V maximum clamping voltage at 139.5A peak pulse current. It is AEC-Q101 qualified and designed for automotive and industrial ESD/EMI protection in power supply rails and I/O lines.
For engineers reviewing the SMDJ13AH datasheet, SMDJ13AH pinout, SMDJ13AH application, or SMDJ13AH equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, thermal resistance (RθJA = 75°C/W), DO-214AB (SMC) package compatibility, and unidirectional surge handling up to 300A IFSM.
Technical Context
The SMDJ13AH operates as a single-die, unidirectional avalanche diode optimized for fast transient suppression in automotive and industrial environments. Its glass-passivated junction enables sub-1ps response time and stable clamping across -55°C to +175°C junction temperature range.
It meets ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnection & coupling), and Pulse 3a/3b (capacitive switching transients), with a 3000W peak pulse power rating at TA = 25°C and derated per Fig.2 above ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR @ IT=1mA | 14.4–15.9 V - Verified avalanche breakdown threshold ensuring predictable turn-on during transients |
| VC @ IPPM=139.5A | 21.5 V - Clamped voltage during 10/1000µs surge, limiting downstream IC stress |
| PPK | 3000 W - Peak pulse power handling capability per single 1ms waveform per Fig.5 |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance defining PCB heatsinking requirements |
| IFSM | 300 A - 8.3ms half-sine surge current rating for load-switching events |
| Junction temp. range | -55°C to +175°C - Validated operation across automotive under-hood and industrial control environments |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode band marking. Matte tin-plated leads, J-STD-002 solderable, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to protected line (e.g., 12V rail); conducts during reverse-biased transient |
| Cathode | Clamping reference / Ground reference | Connected to system ground or low-impedance return; defines polarity and clamping reference point |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive electronics including engine control units and body modules |
| ISO 7637-2 compliance | Guaranteed immunity to standardized vehicle electrical transients (Pulse 1/2a/2b/3a/3b) |
| Sub-1ps response time | Enables suppression of nanosecond-scale ESD and fast-rising load dump edges |
| UL 94V-0 molding compound | Ensures flame-retardant PCB assembly safety in enclosed industrial enclosures |
| Single-die construction | Eliminates inter-die mismatch, delivering consistent VBR and clamping across production lots |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges below 21.5V. Use Value: Prevents damage to MCU power supplies and CAN transceivers during ISO 7637-2 Pulse 1 events up to 3000W. | Use Scenario: Shielding 24V digital input modules from field-wiring induced transients. IC Role / Device Role / Timing Role: Standoff protector on dry-contact inputs, absorbing inductive kickback from solenoid drivers. Use Value: Maintains signal integrity by limiting voltage excursions to ≤21.5V during 139.5A 10/1000µs surges. |
| Telecom DC Power Interface | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered switch ports and base station DC feeds. IC Role / Device Role / Timing Role: Primary surge clamp on 48V DC input, coordinated with upstream fuse and filter. Use Value: Withstands repetitive 3000W pulses without degradation, supporting telecom equipment MTBF targets. | Use Scenario: Suppressing back-EMF from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Reverse-polarity TVS across motor terminals to absorb commutation spikes. Use Value: Limits voltage reversal to 21.5V, protecting H-bridge MOSFETs rated for 30V VDS. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC13 | Lower PPK (1500W), higher VC (24.4V), same DO-214AB package | Not AEC-Q101 qualified; limited to consumer-grade 12V systems | Select when cost sensitivity outweighs automotive qualification and 3000W headroom |
| SMLJ13A | Same VWM/VBR, identical PPK and VC, but RθJA = 85°C/W (less efficient thermal dissipation) | Compatible with same PCB layout but requires enhanced heatsinking for sustained surge duty | Choose only if SMDJ13AH is unavailable and thermal margin can be increased via copper area |
Compared with SAC13 and SMLJ13A, the SMDJ13AH delivers superior automotive qualification, lower clamping voltage, and better thermal performance-making it the preferred choice for AEC-Q101-compliant designs requiring robust 3000W transient immunity in compact SMC packages.
Availability
SMDJ13AH is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC I/O hardening, and telecom DC power interface applications requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMDJ13AH 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, serving global automotive, industrial, and consumer markets since 1979.
The SMDJ series is part of TSC's high-power TVS portfolio, engineered specifically for ISO 7637-2-compliant automotive transient suppression and ruggedized industrial surge immunity in surface-mount form factors.
FAQ
What is the maximum clamping voltage of the SMDJ13AH under standard test conditions?
The SMDJ13AH has a maximum clamping voltage (VC) of 21.5 V when subjected to a 10/1000 µs waveform with a peak pulse current (IPPM) of 139.5 A. This value is measured per JEDEC standards and ensures downstream circuitry remains within safe voltage limits during transient events. The SMDJ13AH maintains this clamping performance across its full operating temperature range.
Is the SMDJ13AH suitable for bidirectional transient protection?
No, the SMDJ13AH is a unidirectional TVS diode intended for DC line protection where polarity is fixed. For bidirectional applications, the SMDJ13CAH variant must be used instead. The SMDJ13AH features a cathode band marking and conducts only in reverse bias-using it in AC or polarity-agnostic circuits will result in forward conduction and failure.
Does the SMDJ13AH meet automotive qualification standards?
Yes, the SMDJ13AH is AEC-Q101 qualified and tested per the full stress test schedule for discrete semiconductors, including temperature cycling, humidity bias, and mechanical shock. It also complies with ISO 7637-2 Pulse 1/2a/2b/3a/3b, making it suitable for use in automotive powertrain, body, and infotainment modules.
What is the thermal resistance specification for the SMDJ13AH?
The SMDJ13AH has a junction-to-ambient thermal resistance (RθJA) of 75°C/W when mounted on a standard 1-inch² FR-4 PCB with 2 oz copper. Its junction-to-lead resistance (RθJL) is 15°C/W, indicating efficient heat transfer to the PCB pads. These values are critical for calculating safe operating area during repetitive surge events.
Can the SMDJ13AH replace the SMDJ12AH or SMDJ14AH in an existing design?
The SMDJ13AH is not a direct replacement for SMDJ12AH or SMDJ14AH due to differences in VWM (13 V vs. 12 V or 14 V) and corresponding VBR/VC values. Substituting requires verifying that the 13V stand-off aligns with system overvoltage margins and that clamping at 21.5V remains compatible with downstream IC absolute maximum ratings. Always validate with actual surge testing.
SMDJ13AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMDJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 139.5A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMDJ13AH FAQ
1.How can I place an order for SMDJ13AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDJ13AH 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 SMDJ13AH reliable?
The price and inventory of SMDJ13AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDJ13AH is usually 5 days.
3.What payment methods are accepted for SMDJ13AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDJ13AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDJ13AH?
SMDJ13AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDJ13AH 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 SMDJ13AH?
For technical support, including SMDJ13AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDJ13AH requirements.
6.How does Aetrix verify that SMDJ13AH is sourced from the original manufacturer or authorized distributors?
All SMDJ13AH 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 SMDJ13AH meets industry standards.
7.What is the process for return or replacement of SMDJ13AH?
All SMDJ13AH units undergo pre-shipment inspection (PSI). If there is an issue with SMDJ13AH, 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 SMDJ13AH part is unused and in its original packaging.
Return procedure for SMDJ13AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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