SM36-02HTG Alternative / Equivalent / Replacement - YINT ESD36VAPB Cross Reference

YINT Electronics | Product Knowledge Draft | 36V two-line protection for industrial and serial interfaces

Searches for a SM36-02HTG alternative usually begin when a design team needs supply continuity, a second source or a lifecycle replacement without changing the protected interface. YINT official Cross-reference Search records ESD36VAPB against the Littelfuse part, giving engineering and purchasing teams a documented candidate for a controlled review.

1. Replacement Overview

Littelfuse SM36-02HTG belongs to the SM general-purpose ESD array family and uses a three-lead SOT-23 package. The family is intended for 36V-class lines and can protect one bidirectional line or two unidirectional lines, making it relevant to industrial controls, serial interfaces and exposed monitoring circuits. At this voltage level, working-voltage margin and clamping coordination with the transceiver are central to the replacement decision.

2. YINT Candidate Profile

YINT ESD36VAPB is the official candidate listed for SM36-02HTG. YINT's public data identifies ESD36VAPB as a 36V SOT-23 TVS array for RS-232, RS-422, RS-485, control and monitoring systems. The published application class is aligned, but pin use, polarity, surge waveform and clamping must be compared directly before the part is accepted.

3. How to Compare SM36-02HTG and YINT ESD36VAPB

A cross-reference result should narrow the engineering search, not replace it. Start with function, protected-line count, directionality, internal topology and every pin assignment. Then compare the package drawing, recommended land pattern, component height, marking and tape orientation. Electrical comparison should cover working voltage, breakdown or trigger behavior, leakage, capacitance, peak current, clamping, pulse waveform and temperature range under equivalent conditions. Confirm whether the board uses the device as one bidirectional protector or two unidirectional paths; the same three-pin outline can support different circuit assumptions. Compare reverse stand-off voltage, breakdown range, leakage and clamping at the same current. For long industrial cables, coordinate the array with upstream series impedance, common-mode filtering and chassis grounding, then test EFT and surge as well as ESD.

The approval record should identify the exact PCB revision, connector, cable, enclosure, firmware state and test level. Where the device is part of a high-speed or long-cable interface, repeat signal-quality and EMC testing after assembly. This prevents a result from one board or interface mode from being reused in another product without evidence.

4. Application Scenarios

The following equipment categories are practical starting points for evaluating this cross-reference. Final suitability depends on the voltage range, interface topology, signal speed and immunity requirement of the actual product.

• RS-232, RS-422 and RS-485 ports on industrial equipment.
• Control and monitoring lines in PLC, HMI and remote-I/O systems.
• Server, notebook and desktop service or communication connectors.
• Long-cable alarm, access-control and building-automation interfaces.

5. Replacement Qualification Checklist

Use a controlled checklist so engineering, quality and purchasing reach the same traceable conclusion:

• Confirm one-bidirectional-line or two-unidirectional-line use.
• Compare the complete SOT-23-3 pinout, pad layout and polarity marking.
• Review 36V working margin, leakage and clamping at equal currents.
• Coordinate the array with filtering, series impedance and chassis return.
• Run ESD, EFT, surge and communication-recovery tests on the final cable set.

6. Why Evaluate YINT Electronics

The principal reason to evaluate YINT ESD36VAPB for a SM36-02HTG replacement is that the relationship is recorded in YINT's public cross-reference database. This gives the project one traceable candidate instead of an informal similarity claim. YINT can help confirm current inventory, reel packing, samples, quotation and application conditions when the complete part number and project information are provided.

• Public mapping: the model relationship can be checked on the YINT website.
• Product scope: YINT supplies ESD, TVS, surge-protection and EMI-filtering devices for coordinated interface protection.
• Sample and supply support: contact YINT to verify available quantity, lead time, packing and samples.
• Controlled engineering review: final selection remains tied to current data sheets and target-system tests.

7. Frequently Asked Questions

Q: What is the YINT alternative to SM36-02HTG?
A: YINT official Cross-reference Search maps the Littelfuse SM36-02HTG to ESD36VAPB, so ESD36VAPB is the candidate recommended for engineering review in this article.

Q: Can ESD36VAPB replace SM36-02HTG without qualification?
A: No. The cross-reference narrows the candidate search. Production substitution still depends on controlled data sheets, package drawings, quality requirements and application testing.

Q: Which items should be compared first?
A: Begin with device function, protected-line count, topology, complete ordering code, package and pinout. Then compare voltage, leakage, capacitance, current and clamping under equivalent test conditions. For this pair, the key package review is: SOT-23-3 class; verify pin function and polarity.

Q: Is board-level or system-level testing required?
A: Yes. Complete the applicable ESD, EFT or surge tests and any required signal-integrity, communication or functional-recovery tests on the target PCB and assembled product.

Q: How can buyers confirm stock, samples and pricing?
A: Contact Shanghai Yint Electronic Co., Ltd. with the source model, YINT candidate, estimated quantity, application and required delivery date so current stock, samples, packing and quotation can be checked.

8. Conclusion and Contact

YINT ESD36VAPB is the official cross-reference candidate identified for Littelfuse SM36-02HTG. It provides a practical starting point for supply continuity, second-source qualification or a new design review, while final release must remain tied to verified documents and target-system testing. Before purchasing release, record the approved application, comparison evidence, sample-test result and complete ordering code in the bill-of-materials change record.

Need help reviewing the alternative?For current stock, samples, quotation, reel packing or a controlled model comparison, contact Shanghai Yint Electronic Co., Ltd. at global@yint.com.cn. You can also use the YINT Cross-reference Search.