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Taiwan Semiconductor Corporation SMBJ13H
- Part No.:
- SMBJ13H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ13H.pdf
- Description:
- 600W, 16V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:3,051
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Product details
Overview
SMBJ13H from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust ESD and surge protection in automotive and industrial power rails. It features a 13 V working stand-off voltage (VWM), 14.4–17.6 V breakdown voltage (VBR), 23.8 V maximum clamping voltage (VC) at 26 A peak pulse current, and 600 W peak pulse power rating with <1.0 ps response time - deployed in engine control units, CAN bus interfaces, and 12 V DC power inputs.
For engineers reviewing the SMBJ13H datasheet, SMBJ13H pinout, SMBJ13H application, or SMBJ13H equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, AEC-Q101 qualification status, DO-214AA (SMB) package thermal resistance (RθJA = 55 °C/W), and unidirectional leakage behavior (<1 µA @ 13 V).
Technical Context
The SMBJ13H operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified breakdown range (14.4–17.6 V @ 1 mA). Its glass-passivated junction ensures stable VBR tolerance and low leakage, while the DO-214AA package enables automated placement and meets JESD201 Class 2 whisker resistance.
It delivers 600 W non-repetitive peak pulse power (10/1000 µs waveform), clamps transients to ≤23.8 V at 26 A, and sustains steady-state power dissipation of 3 W at 25 °C ambient. Junction temperature is rated from –55 °C to +150 °C, supporting under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V systems. |
| VBR min/max | 14.4 V / 17.6 V @ 1 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal supply with margin. |
| VC @ IPP | 23.8 V @ 26 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to sub-24 V level. |
| PPK | 600 W - Peak pulse power handling per single transient; compliant with ISO 7637-2 Pulse 1 & 2b severity levels. |
| ID @ VWM | <1 µA - Reverse leakage at rated stand-off; negligible power loss and signal integrity impact in always-on circuits. |
| RθJA | 55 °C/W - Junction-to-ambient thermal resistance; enables thermal design for PCB copper area and airflow in enclosed modules. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode-banded unidirectional configuration. Matte tin-plated leads, RoHS and halogen-free compliant, moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; forms clamping loop with cathode on protected line. |
| Cathode | Protected line connection | Connected to the 12 V rail or signal line requiring transient suppression; conducts avalanche current to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for ECUs and body control modules. |
| Glass passivated junction | Stable VBR tolerance and low leakage across temperature; eliminates risk of parameter drift in high-humidity under-hood conditions. |
| Fast response time <1.0 ps | Clamps ESD events before sensitive logic or analog circuitry experiences overstress - critical for CAN transceivers and microcontroller I/O. |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Validated against standardized automotive load dump and inductive switching transients - no additional external filtering required for compliance. |
Applications
| Automotive Engine Control Unit (ECU) | CAN Bus Physical Layer Protection |
|---|---|
Use Scenario: Protecting 12 V power input and sensor supply lines in engine control modules exposed to alternator load dump and starter motor kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery rail and LDO/regulator input. Use Value: Limits transient voltage to ≤23.8 V during 600 W surges, preventing latch-up or permanent damage to MCU power domains. |
Use Scenario: Safeguarding CANH/CANL differential pair against ESD and coupled transients in vehicle networking nodes. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on each CAN line referenced to ground. Use Value: Sub-1 µA leakage avoids bus bias shift; fast clamping preserves signal integrity up to 1 Mbps CAN FD timing margins. |
| Industrial 12 V DC Power Input | LED Driver Supply Rail Protection |
Use Scenario: Securing 12 V input stage of programmable logic controllers (PLCs) and motor drives against field-wiring induced surges. IC Role / Device Role / Timing Role: Primary surge suppression element upstream of input filter and DC-DC converter. Use Value: 600 W rating handles repetitive 10/1000 µs transients per IEC 61000-4-5 Level 3; RθJA = 55 °C/W supports convection-cooled enclosures. |
Use Scenario: Shielding constant-current LED driver ICs from inductive turn-off spikes generated by high-side MOSFET switching. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output or supply rail to absorb flyback energy. Use Value: 23.8 V clamping prevents overvoltage stress on driver output FETs and current-sense amplifiers during rapid load disconnection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ13A | Same DO-214AC (SMA) package; slightly higher VC (25.1 V @ 25.5 A); lower PPK (400 W). | Lower power handling limits suitability for ISO 7637-2 Pulse 2b; acceptable for consumer-grade 12 V supplies. | Select SMAJ13A only if board space allows SMA footprint and system surge severity is below automotive Grade B. |
| Vishay SMF13A | DO-219AB (SOD-123FL) package; 23.2 V VC @ 25.5 A; 200 W PPK; tighter VBR tolerance (14.4–15.9 V). | Not AEC-Q101 qualified; insufficient for automotive ECU use; suited for space-constrained consumer electronics. | Choose SMF13A for cost-sensitive, non-automotive designs where 200 W surge capacity suffices and SOD-123FL layout is preferred. |
Compared with SMAJ13A and SMF13A, the SMBJ13H offers higher surge robustness (600 W vs. 400 W/200 W), AEC-Q101 qualification, and DO-214AA thermal performance - making it the only option validated for under-hood automotive deployment with full ISO 7637-2 compliance.
Availability
SMBJ13H is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial 12 V DC input conditioning, and CAN bus interface hardening requiring stable component supply across multi-year production cycles.
Supply support for SMBJ13H 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers with global automotive and industrial certifications.
The SMBJH series was engineered specifically for AEC-Q101-compliant transient suppression in harsh automotive environments - emphasizing clamping consistency, thermal resilience, and ISO 7637-2 immunity without derating.
FAQ
What is the maximum clamping voltage of SMBJ13H under standard test conditions?
The SMBJ13H has a maximum clamping voltage (VC) of 23.8 V when subjected to a 10/1000 µs surge current of 26 A. This value is measured per ANSI/IEEE C62.35 and confirmed in Taiwan Semiconductor's official datasheet revision A2102. The SMBJ13H maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C), ensuring predictable protection in automotive under-hood applications.
Is SMBJ13H unidirectional or bidirectional, and how is polarity identified?
The SMBJ13H is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix in its part number. Polarity is marked by a cathode band on the DO-214AA (SMB) package body - the banded end connects to the protected line (e.g., 12 V rail), while the anode connects to ground. This configuration provides low-leakage reverse blocking and precise forward conduction only during avalanche clamping events.
Does SMBJ13H meet automotive qualification standards?
Yes, SMBJ13H is AEC-Q101 qualified and explicitly tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements. Its construction - including glass-passivated junction, JESD201 Class 2 whisker resistance, and moisture sensitivity level 1 - satisfies automotive manufacturing and reliability benchmarks. Taiwan Semiconductor documents this qualification in the SMBJH Series datasheet Version A2102.
What is the thermal resistance profile of SMBJ13H, and how does it affect PCB layout?
The SMBJ13H has a junction-to-ambient thermal resistance (RθJA) of 55 °C/W and junction-to-case (RθJC) of 10 °C/W, both measured on standard FR-4 with 1-inch² copper pad. These values require minimum 10 mm² exposed copper pour connected to both terminals for sustained 3 W steady-state dissipation. Layout must avoid thermal isolation - especially in sealed automotive modules - to prevent junction temperature exceeding 150 °C during repeated surge events.
Can SMBJ13H be used in bidirectional signal protection applications?
No - SMBJ13H is strictly unidirectional and not rated for symmetrical bipolar operation. For bidirectional protection (e.g., RS-485, USB D+/D–), Taiwan Semiconductor specifies variants with "CH" or "CAH" suffixes (e.g., SMBJ13CH). Using SMBJ13H in reverse-biased signal paths risks premature breakdown, excessive leakage, or failure to clamp negative transients. Always match device polarity to circuit topology.
SMBJ13H 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 23.8V
- Current - Peak Pulse (10/1000µs):
- 26A
- 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)
SMBJ13H FAQ
1.How can I place an order for SMBJ13H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ13H 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 SMBJ13H reliable?
The price and inventory of SMBJ13H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ13H is usually 5 days.
3.What payment methods are accepted for SMBJ13H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ13H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ13H?
SMBJ13H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ13H 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 SMBJ13H?
For technical support, including SMBJ13H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ13H requirements.
6.How does Aetrix verify that SMBJ13H is sourced from the original manufacturer or authorized distributors?
All SMBJ13H 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 SMBJ13H meets industry standards.
7.What is the process for return or replacement of SMBJ13H?
All SMBJ13H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ13H, 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 SMBJ13H part is unused and in its original packaging.
Return procedure for SMBJ13H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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